A device for fixing the eyeletting of the inner liner to the tire building machine

Abstract

The present application relates to the technical field of tire production accessories, and discloses a device for fixing the inner lining eyeletting of a tire building machine, which comprises a wheel drum, a detection part and an execution part; the detection part is used for determining the bubble position and size of the surface of a tire blank, the execution part is used for performing the eyeletting operation on the tire blank, and the wheel drum is used for fixing the tire blank; the detection part and the execution part are sequentially arranged in the movement direction of the wheel drum and are connected with the wheel drum respectively; the execution part comprises a taper head, a cross beam, a shell and support columns; the taper head is slidably connected with the cross beam, the cross beam is connected with the support columns, the support columns are correspondingly arranged on the two sides of the wheel drum, the shell has a hollow structure, the cross beam is arranged in the interior of the shell, and the shell is fixedly connected with the support columns; through the detection part and the execution part, the bubble position and size of the surface of the tire blank can be automatically determined, and the eyeletting operation can be performed on the tire blank without manual intervention; the automatic processing process improves the operation accuracy and consistency and reduces human errors.

Description

Technical Field

[0001] This invention relates to the technical field of tire manufacturing components, and in particular to a device for punching holes in the inner liner of a tire forming machine. Background Technology

[0002] A tire forming machine is a piece of equipment used in the tire production process to assemble semi-finished components, including the tread, sidewall, carcass, and liner, into a tire blank. The liner is the first semi-finished component, and it is joined together with or without sealing adhesive before being combined with the carcass and other components.

[0003] The following problems exist during the semi-finished component molding process: While each component has dimensional and weight standards, there are instances where the dimensions and weight deviate from the upper or lower limits; each component must be placed in the designed position, but the positioning indicator lights used in actual production have errors and cannot be strictly followed according to the standards; each component needs appropriate adhesion, but fluctuations in raw materials, equipment, processes, and dwell time can sometimes lead to reduced adhesion; during component lamination, pressure rollers are needed to release air, and the pressure, shape, and position of the pressure rollers also affect the lamination quality. The aforementioned fluctuations in component dimensions and weight, component positioning, component adhesion, and pressure roller pressure, shape, and position can all lead to air bubbles during component lamination. To avoid air bubbles after tire vulcanization, the inner liner of the tire blank needs to be perforated.

[0004] Faced with the problem of puncturing tires to remove air bubbles, most factories currently choose manual operation. However, manual operation is highly subjective and random, requiring experienced operators to accurately control the location, depth, and number of punctures to ensure the effectiveness of the puncture treatment. Moreover, manual operation has low production efficiency. Some factories choose to use machines to puncture tire blanks to remove air bubbles. Generally, the working parameters of the puncturing machine are preset so that the machine punctures tire blanks on the production line indiscriminately at regular intervals or distances. Although replacing manual labor with equipment increases work efficiency and saves costs to some extent, it also punctures areas of the tire blank that do not have air bubbles. At the same time, the location and depth of the punctures can only be operated according to the preset parameters. Summary of the Invention

[0005] In view of this, the present invention provides a device for punching holes in the inner liner of a tire forming machine, so as to solve the problems of low efficiency of manual operation and inability to achieve fine processing through equipment.

[0006] This invention proposes a device for puncturing the inner liner of a tire forming machine, comprising: a wheel drum, a detection unit, and an execution unit; the detection unit is used to determine the position and size of air bubbles on the surface of the tire blank, the execution unit is used to perform a puncturing operation on the tire blank, and the wheel drum is used to fix the tire blank; the detection unit and the execution unit are sequentially arranged in the movement direction of the wheel drum and are respectively connected to the wheel drum;

[0007] The actuator includes: a cone head, a crossbeam, a housing, and a support column. The cone head is slidably connected to the crossbeam, the crossbeam is connected to the support column, and the support columns are respectively disposed on both sides of the wheel drum. The housing has a hollow structure inside, the crossbeam is disposed inside the housing, and the housing is fixedly connected to the support column.

[0008] In some embodiments, the detection unit includes an infrared emitter, an infrared receiver, and an image acquisition component. The infrared emitter and the infrared receiver are respectively disposed on both sides of the wheel drum. The image acquisition component is fixed to the top of the infrared emitter and the infrared receiver. The image acquisition component is used to observe the upper surface of the tire blank.

[0009] In some embodiments, the cone head includes: a telescopic assembly and a cone needle, the telescopic assembly being provided with a telescopic rod; the telescopic assembly is connected to the cone needle.

[0010] In some embodiments, the sidewall of the conical needle is provided with a plurality of annular grooves, and the planes in which each annular groove is located are parallel to each other.

[0011] In some embodiments, the cone further includes a limiting piece, which is mounted on the end of the telescopic assembly and is used to fix the extended length of the cone.

[0012] In some embodiments, a limiting ring is provided on the outer surface of the limiting piece, and the limiting ring is threadedly connected to the limiting piece.

[0013] In some embodiments, the telescopic assembly has a connection hole for fixing the crossbeam.

[0014] In some embodiments, a gear is installed inside the telescopic assembly, with the top of the gear located within the connection hole.

[0015] In some embodiments, the crossbeam is a π-shaped structure with a groove at the bottom, the top surface of the groove is toothed, and the groove meshes with the gear.

[0016] In some embodiments, the drum is a cylindrical structure, and a rotating shaft is provided at the central axis of the drum.

[0017] Compared with the prior art, the beneficial effects of the device for punching holes in the inner liner of the tire forming machine provided by this invention are as follows:

[0018] The automated puncture operation of this invention, through the infrared emitter, infrared receiver, and image acquisition component of the detection unit, can accurately determine the location and size of air bubbles on the surface of the tire carcass. The combination of infrared technology and image observation provides comprehensive and accurate air bubble detection capabilities. Furthermore, the telescopic component of the cone head and the cone needle enable precise puncture operations on the tire carcass without manual intervention, improving operational accuracy and consistency and reducing human error. The limiting plate and annular groove design of the cone head allow for controllable extension length and stability of the cone needle. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a side view of a device for fixing an inner liner eyelet to a tire forming machine according to an embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional schematic diagram of the wheel drum according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of a device for punching holes in the inner liner of a tire forming machine, according to an embodiment of the present invention.

[0023] Figure 4 This is a three-dimensional schematic diagram of the connection between the cone head and the crossbeam according to an embodiment of the present invention;

[0024] Figure 5 This is a planar schematic diagram of the cone head and the crossbeam at a certain angle according to an embodiment of the present invention.

[0025] In the diagram, 100 is the drum; 110 is the rotating shaft; 200 is the detection unit; 210 is the infrared transmitter; 220 is the infrared receiver; 230 is the image acquisition component; 300 is the actuator; 310 is the cone head; 311 is the telescopic component; 312 is the cone needle; 313 is the annular groove; 314 is the limiting piece; 315 is the limiting ring; 316 is the connecting hole; 317 is the gear; 318 is the telescopic rod; 320 is the crossbeam; 321 is the groove; 330 is the outer shell; and 340 is the support column. Detailed Implementation

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] like Figure 1-5 As shown, the preferred embodiment of the present invention includes a device for puncturing the inner liner of a tire forming machine, comprising: a wheel drum 100, a detection unit 200, and an execution unit 300; the detection unit 200 is used to determine the position and size of air bubbles on the surface of the tire blank, the execution unit 300 is used to perform a puncturing operation on the tire blank, and the wheel drum 100 is used to fix the tire blank; the detection unit 200 and the execution unit 300 are sequentially arranged in the movement direction of the wheel drum 100 and are respectively connected to the wheel drum 100;

[0031] The actuator 300 includes a cone head 310, a crossbeam 320, a housing 330, and a support column 340. The cone head 310 is slidably connected to the crossbeam 320, and the crossbeam 320 is connected to the support column 340. The support columns 340 are respectively arranged on both sides of the wheel drum 100. The housing 330 has a hollow structure inside, and the crossbeam 320 is arranged inside the housing 330. The housing 330 is fixedly connected to the support column 340.

[0032] It should be noted that the detection unit 200 is electrically connected to the execution unit 300. The detection unit 200 transmits the detected bubble position and size parameters to the execution unit 300. The execution unit 300 adjusts the length and position of the adjusting cone 310 to accurately perform the puncture operation on the tire blank. In addition, the wheel drum 100 serves as a fixing device in this apparatus to fix the tire blank and maintain its stability. The fixation of the tire blank is also an important aspect of the puncture operation. The execution unit 300 consists of the cone 310, the crossbeam 320, the outer shell 330, and the support column 340. The sliding connection of the cone 310 on the crossbeam 320 provides operational flexibility and control. The setting of the support column 340 provides stable support to ensure the stability of the puncture operation. The outer shell 330 protects the crossbeam 320 and the cone needle 312 to prevent impurities and tire blank powder from affecting the operation of the apparatus.

[0033] Furthermore, the detection unit 200 includes an infrared emitter 210, an infrared receiver 220, and an image acquisition component 230. The infrared emitter 210 and the infrared receiver 220 are respectively disposed on both sides of the wheel drum 100. The image acquisition component 230 is fixed to the top of the infrared emitter 210 and the infrared receiver 220. The image acquisition component 230 is used to observe the upper surface of the tire blank.

[0034] It should be noted that, as Figure 3 As shown, the infrared emitter 210 has multiple emission ports in the same vertical direction to emit infrared signals, and each infrared signal is parallel to the surface of the wheel drum 100. The infrared receiver 220 receives the infrared signals emitted from the corresponding position. When there is an air bubble in the tire blank, it will protrude a part of the tire blank surface, and the infrared signals that are closer to the tire blank will be blocked. At this time, it is determined that an air bubble has appeared and the lateral coordinate is determined. The image acquisition component 230 converts the captured tire blank into an image signal, and after processing, it is converted into a digital signal. The image acquisition component 230 performs various calculations on these signals to extract the features of the target, and then controls the on-site equipment action according to the judgment result. Specifically, the image acquisition component 230 is fixed directly above the surface of the tire blank and multiple are set in the vertical direction to observe and detect the tire blank. If an air bubble is observed, the size of the air bubble and its vertical coordinate are obtained.

[0035] Furthermore, the cone head 310 includes: a telescopic assembly 311 and a cone needle 312, the telescopic assembly 311 being provided with a telescopic rod 318; the telescopic assembly 311 is connected to the cone needle 312.

[0036] Specifically, in this embodiment, the telescopic component 311 is a three-section telescopic rod 318. Each section of the telescopic rod 318 is a cylindrical structure with a gradually decreasing radius. The sections with the largest to smallest radii are connected end to end. The telescopic rod 318 with the smaller radius can extend or retract from the telescopic component 311 with the larger radius. The telescopic rod 318 with the smallest radius is connected to a conical needle 312, which is inserted into the telescopic component 311 for fixation. It should be noted that the number of sections in the telescopic component can be increased or decreased, and the specific number can be selected according to the actual production situation.

[0037] Furthermore, the sidewall of the conical needle 312 is provided with a plurality of annular grooves 313, and the planes in which each annular groove 313 is located are parallel to each other.

[0038] Furthermore, the cone head 310 also includes a limiting piece 314, which is installed at the end of the telescopic assembly 311 and is used to fix the extension length of the cone head 310.

[0039] Furthermore, a limiting ring 315 is provided on the outer surface of the limiting piece 314, and the limiting ring 315 is threadedly connected to the limiting piece 314.

[0040] It should be noted that the adjustment method for the extension length of the conical needle 312 is as follows: Figure 4 As shown, the limiting piece 314 is an inverted frustum-shaped structure formed by multiple spaced metal pieces surrounding it. When the length of the conical needle 312 needs to be adjusted, the limiting ring 315 is first loosened by rotating it in the reverse direction along the thread. At this time, the engagement between the limiting piece 314 and the ring groove 313 is loosened, and the conical needle 312 can be pulled out downwards or further inserted into the retraction component. When the appropriate extension length is adjusted, the limiting ring 315 is rotated in the thread direction to lock it. In addition, the number of ring grooves 313 only affects the precision of the extension length of the conical needle 312. The more ring grooves 313 there are, the more precise the adjustment of the extension length of the conical needle 312 will be.

[0041] Furthermore, the telescopic component 311 has a connecting hole 316 for fixing the crossbeam 320.

[0042] Furthermore, a gear 317 is installed inside the telescopic assembly 311, with the top of the gear 317 located inside the connection hole 316.

[0043] Furthermore, the crossbeam 320 has a π-shaped structure with a groove 321 at the bottom. The top surface of the groove 321 is toothed, and the groove 321 meshes with the gear 317.

[0044] It should be noted that the crossbeam 320 meshes with the gear 317 in the connecting hole 316 via a groove 321 with a toothed top, when the cone 310 needs to... Figure 3 When moving in the longitudinal direction, the cone 310 moves back and forth on the crossbeam 320 through the rotating gear 317 in a meshing transmission manner. However, it should be noted that in this embodiment, the gear 317 in the cone 310 has a maximum rotation range. The crossbeam 320 is divided into four regions. The maximum rotation range of the gear 317 ensures that the movement range of the cone 310 connected in each region will not exceed the range of the region. When the cone 310 reaches the two ends of the region, it reaches the maximum rotation range of the gear 317.

[0045] Furthermore, the wheel drum 100 has a cylindrical structure, and a rotating shaft 110 is provided at the central axis of the wheel drum 100.

[0046] It should be noted that, as Figure 2 The wheel drum 100 shown has a seal on one side and the other side is used to insert the tire blank around the rotating shaft 110, which drives the tire blank to rotate.

[0047] The working process of this invention is as follows:

[0048] First, the tire blank is placed in the wheel drum and fixed. The rotating shaft drives the tire blank to rotate, and the angular velocity or linear velocity of the rotation is recorded. By using the rotational speed of the rotating shaft and the distance between the detection unit and the execution unit, the time t when the detection unit travels to the execution unit is obtained. Then, the upper surface of the tire blank emits infrared signals through multiple vertically arranged infrared emitters, and multiple corresponding infrared receivers receive the infrared signals. If any infrared receiver does not receive a signal, the horizontal coordinate x0 is determined and recorded based on the movement time and the speed of the rotating shaft. The height of the bubble relative to the surface of the tire blank, i.e., the bubble height h, is determined based on the number of infrared receivers that cannot receive infrared signals, and the bubble height h is recorded. An image acquisition component set above the infrared receivers and infrared emitters converts the image signal of the tire blank into a digital signal. If a bubble is present, the size of the bubble, i.e., the bubble diameter d, is obtained. The image acquisition component that detects the presence of a bubble obtains its own vertical coordinate y0. At this time, the complete data of the bubble is obtained: the position of the bubble in the detection unit is (x0, y0), and the size of the bubble is (d, h).

[0049] The data of the bubble is transmitted to the execution unit. The execution unit transmits the obtained bubble position to the corresponding cone in the four regions according to the longitudinal coordinate. The cone adjusts its position by rotating the gear according to the bubble position data within time t. The telescopic component is adjusted according to the bubble size. The bubble size is proportional to the extension length of the telescopic component. When time t is reached, the telescopic component quickly extends by a length of h to puncture the bubble.

[0050] It should be noted that if the image acquisition component detects that the bubble diameter d is greater than the preset value or that two or more bubbles appear in the same area divided by the same beam, this can be solved by adding a cone. The same excessively large bubble can be punctured multiple times, or a large number of bubbles can be punctured by adding a cone.

[0051] In summary, this invention provides a device for puncturing inner liner linings fixed to a tire forming machine. Through accurate detection of bubble location and size and stable puncturing operation, it effectively solves the problem of inner liner bubbles during tire forming, improving tire production quality and efficiency. Furthermore, the optimized structural design and efficient operating mechanism ensure the device's stability, reliability, and convenience, meeting the requirements for inner liner puncture treatment in tire production.

[0052] The above description is merely one embodiment of the present invention, but it cannot be used to limit the scope of the present invention. Any structural changes made based on the present invention, as long as they do not lose the essence of the present invention, should be considered to fall within the protection scope of the present invention and be subject to its restrictions.

[0053] It should be noted that the system provided in the above embodiments is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be further decomposed or combined. For example, the modules in the above embodiments can be merged into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the various modules or steps and are not considered as an improper limitation of the present invention.

[0054] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0055] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A device for punching holes in the inner liner of a tire forming machine, characterized in that, include: Wheel drum, testing department and execution department; The detection unit is used to determine the position and size of air bubbles on the surface of the tire blank, the execution unit is used to perform a puncture operation on the tire blank, and the wheel drum is used to fix the tire blank. The detection unit and the execution unit are sequentially arranged in the direction of movement of the wheel drum, and are respectively connected to the wheel drum; The actuator includes: a cone head, a crossbeam, a housing, and a support column. The cone head is slidably connected to the crossbeam, the crossbeam is connected to the support column, and the support columns are respectively disposed on both sides of the wheel drum. The housing has a hollow structure inside, the crossbeam is disposed inside the housing, and the housing is fixedly connected to the support column. The detection unit includes an infrared emitter, an infrared receiver, and an image acquisition component. The infrared emitter and the infrared receiver are respectively disposed on both sides of the wheel drum. The image acquisition component is fixed on the top of the infrared emitter and the infrared receiver. The image acquisition component is used to observe the upper surface of the tire blank. The cone head includes: a telescopic assembly and a cone needle; the telescopic assembly is provided with multiple telescopic rods; the telescopic assembly is connected to the cone needle; The sidewall of the conical needle is provided with multiple annular grooves, and the planes in which each annular groove is located are parallel to each other; The cone head further includes a limiting piece, which is installed at the end of the telescopic assembly and is used to fix the extension length of the cone head; A limiting ring is provided on the outer surface of the limiting piece, and the limiting ring is threadedly connected to the limiting piece; The telescopic component has a connecting hole for fixing the crossbeam.

2. The device for punching holes in the inner liner of a tire forming machine according to claim 1, characterized in that, The telescopic assembly has a gear installed inside, with the top of the gear located inside the connecting hole.

3. The device for punching holes in the inner liner of a tire forming machine according to claim 2, characterized in that, The crossbeam has a π-shaped structure with a groove at the bottom. The top surface of the groove is toothed, and the groove meshes with the gear.

4. The device for punching holes in the inner liner of a tire forming machine according to claim 1, characterized in that, The wheel drum has a cylindrical structure, and a rotating shaft is provided at the central axis of the wheel drum.

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