A pre-setting claw for a bead pre-setter and a bead pre-setter

Abstract

The utility model relates to a kind of pre-setting claw and bead pre-set ware for bead pre-set ware, pre-setting claw includes main frame body, support shaft and ball frame body, ball frame body is sleeved in the periphery of main frame body, and both are set on support shaft, several balls that can roll relative to it are uniformly distributed on ball frame body, the utility model can solve the technical problem that the existing technology uses fixed pre-setting claw, increases the difficulty of bead assembly, cannot guarantee the true roundness of bead.

Description

Technical Field

[0001] This utility model belongs to the field of tire manufacturing technology, specifically relating to a pre-setting claw for a bead pre-setting device and a bead pre-setting device. Background Technology

[0002] The bead is a crucial component of an all-steel radial tire. Its function is to ensure the tire's stable fixation on the rim and to bear critical functions such as load transfer and maintaining tire air tightness. An all-steel radial tire typically consists of two symmetrically arranged bead units. During the tire manufacturing process, the bead units need to be accurately positioned and installed onto their respective bead pre-installers.

[0003] Currently, operators typically place the tire bead onto the expander claws of the bead preamplifier. However, most existing bead preamplifiers use a fixed expander claw structure, where the position and spacing of the claws are not adjustable. In practice, due to dimensional deviations or elastic deformations in tire bead manufacturing, and the fact that different tire sizes use different bead sizes, the fixed expander claws struggle to achieve a good match with the inner ring of the tire bead. Therefore, during the process of fitting the tire bead onto the expander claws, operators often need to manually adjust the bead's placement, and may even need to pull the bead forcefully to ensure it fits perfectly against the six expander claws. This process is not only labor-intensive and inefficient, but it also easily causes deformation of the inner ring of the tire bead, affecting its roundness and consequently the overall tire forming quality. Utility Model Content

[0004] In view of the shortcomings of the existing technology, a pre-setting claw for a bead pre-setting device and a bead pre-setting device are proposed to solve the technical problems of the existing technology using a fixed pre-setting claw, which increases the difficulty of bead assembly and cannot guarantee the roundness of the bead.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] In a first aspect, the present invention provides a pre-setting claw for a tire bead pre-setting device, comprising a main frame, a support shaft, and a ball bearing frame. The ball bearing frame is sleeved around the main frame, and both are mounted on the support shaft. The ball bearing frame is provided with a plurality of balls that can roll relative to it.

[0007] The technical solution is further configured such that both the main frame and the ball bearing frame are frustum-shaped structures, and the small-diameter end of the frustum-shaped structure is connected to the support shaft.

[0008] The technical solution is further configured such that the surface of the ball bearing frame is provided with a plurality of mounting holes, a gap is left between the ball bearing frame and the main frame for accommodating the balls, and a portion of the balls passes through the mounting holes and is exposed on the outside of the mounting holes.

[0009] The technical solution is further configured such that a mounting boss is provided on the main frame, and the ball bearing frame is connected to the mounting boss.

[0010] The technical solution is further configured such that a limiting boss is provided on the main frame, the limiting boss is located on the side of the mounting boss away from the support shaft, and the ball bearing frame abuts against the limiting boss.

[0011] The technical solution is further configured such that a support boss is provided on the support shaft, and the support boss abuts against the small diameter end of the ball bearing frame, and the two have the same diameter.

[0012] Secondly, this utility model provides a tire bead pre-placer, including a pre-placement disc, on which a guide claw and the pre-placement claw are provided. Several pre-placement claws are arranged around the circumference of the pre-placement disc, and the pre-placement claws can move radially along the pre-placement disc, so that the circumference formed by the several pre-placement claws expands or contracts. The guide claw is located between the expanded circumference and the contracted circumference.

[0013] The technical solution is further configured such that the support shaft is connected to the synchronous pulley via a rocker arm, a synchronous belt is connected between several synchronous pulleys, and one of the synchronous pulleys is connected to the drive cylinder via a connecting rod.

[0014] The technical solution is further configured such that the guide claws are arranged in a plurality of positions around the pre-set disk.

[0015] The beneficial effects of this utility model are:

[0016] 1. By setting rolling balls on the ball bearing frame, the tire bead is pushed onto the support shaft by the rolling of the balls during the assembly of the tire bead to the tire bead pre-positioner. Assembly can be achieved without the operator having to pull it forcefully, which helps to reduce labor intensity and improve work efficiency.

[0017] 2. When the tire bead is not placed on the guide claw, several pre-positioned claws are in a retracted state; after the operator places the tire bead on the guide claw, several pre-positioned claws are in an expanded state, thereby automatically supporting the tire bead. Several pre-positioned claws are in the same circumference, which can realize automatic centering of the tire bead, which helps to improve the roundness of the tire bead, and thus improve the overall forming quality of the tire. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the pre-setting claw used in the tire bead pre-setting device in an embodiment of this utility model;

[0019] Figure 2 This is an exploded view of the pre-setting claw used in the tire bead pre-setting device in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the tire bead pre-positioner in an embodiment of this utility model;

[0021] Figure 4 This is a side view of the tire bead pre-positioner in an embodiment of this utility model;

[0022] Figure 5 This is an assembly diagram of the support shaft, rocker arm, timing pulley, and timing belt in an embodiment of this utility model;

[0023] Figure 6 This is an assembly diagram of the drive cylinder, rocker arm, and connecting rod in an embodiment of this utility model;

[0024] Figure 7 yes Figure 3 A partial schematic diagram of point A in the middle.

[0025] In the attached diagram: 1. Main frame; 2. Ball bearing frame; 3. Support shaft; 4. Support boss; 5. Mounting boss; 6. Limiting boss;

[0026] 100, Preset plate; 200, Guide claw; 300, Preset claw; 400, Swing arm; 500, Synchronous pulley; 600, Synchronous belt; 700, Drive cylinder; 800, Connecting rod. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0028] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0029] Example 1:

[0030] This embodiment provides a pre-setting claw for a bead pre-setting device. Please refer to [link / reference]. Figures 1 to 2 It includes a main frame 1, a support shaft 3 and a ball bearing frame 2. The ball bearing frame 2 is sleeved on the periphery of the main frame 1 and both are set on the support shaft 3. The ball bearing frame 2 has a number of balls that can roll relative to it.

[0031] Furthermore, after the ball bearing frame 2 is fitted around the main frame 1, the two are assembled at one end of the support shaft 3, and the other end of the support shaft 3 is connected to the pre-setting plate of the tire bead pre-setting device.

[0032] Specifically, the ball bearings are made of bearing steel to ensure that they are not easily damaged during long-term use and can maintain a low coefficient of friction; the main frame 1 and the ball bearing frame 2 are both made of 45# steel to ensure the stability and durability of the overall structure and to effectively resist external impacts and deformation.

[0033] It should be noted that by setting rolling balls on the ball bearing frame 2, during the process of assembling the tire bead to the tire bead pre-positioner, the rolling of the balls pushes the tire bead above it onto the support shaft 3, reducing frictional resistance. Assembly can be achieved without the operator having to pull it forcefully, which helps to reduce labor intensity and improve work efficiency.

[0034] In one embodiment of this invention, for a pre-setting claw used in a tire bead pre-setting device, please refer to... Figures 1 to 2 Both the main frame 1 and the ball bearing frame 2 are configured as frustum-shaped structures, with the smaller diameter end of the frustum-shaped structure connected to the support shaft 3. The frustum-shaped structure has an inclined surface, which effectively guides the tire bead downwards along the inclined surface, ensuring that the tire bead slides accurately towards the support shaft 3 along a predetermined path when pushed by the balls. Simultaneously, the frustum-shaped structure provides a longer guide path within a limited space, which is beneficial for the design and layout optimization of compact equipment. It provides sufficient sliding distance for the tire bead without increasing the overall size, ensuring smooth operation.

[0035] In one embodiment of this invention, for a pre-setting claw used in a tire bead pre-setting device, please refer to... Figures 1 to 2 The surface of the ball bearing carrier 2 is provided with several mounting holes. A gap is left between the ball bearing carrier 2 and the main frame 1 to accommodate the balls, and a portion of the balls passes through the mounting holes and is exposed on the outside of the mounting holes. In this structural design, the balls are partially exposed on the outside of the mounting holes, allowing the balls to directly contact the corresponding surface of the tire bead, thereby forming rolling friction, reducing frictional resistance, improving efficiency, and reducing energy consumption.

[0036] Furthermore, the main frame 1 is provided with a mounting boss 5, and the ball bearing 2 is connected to the mounting boss 5. By providing the mounting boss 5, a stable mounting base is provided for the ball bearing 2, enabling it to be accurately positioned on the main frame 1. A gap is formed between the ball bearing 2 and the main frame 1, which provides space for the balls to move, ensuring that the balls can rotate freely within it and helping to distribute the load.

[0037] Specifically, the mounting boss 5 is configured as a continuous ring or an intermittent arc along the circumference of the main frame 1.

[0038] In one embodiment of this invention, for a pre-setting claw used in a tire bead pre-setting device, please refer to... Figures 1 to 2 The main frame 1 is also provided with a limiting boss 6, which is located on the side of the mounting boss 5 away from the support shaft 3, and the ball bearing 2 abuts against the limiting boss 6. By providing the limiting boss 6, the ball bearing 2 is limited, preventing it from shifting or shaking during use.

[0039] In one embodiment of this invention, for a pre-setting claw used in a tire bead pre-setting device, please refer to... Figures 1 to 2 The support shaft 3 is provided with a support boss 4, which abuts against the small-diameter end of the ball bearing cage 2, and the diameters of the two are equal. This structural design can achieve coaxial alignment between the ball bearing cage 2 and the support shaft 3. The support boss 4 provides a support surface for the tire bead. At the same time, the support boss 4 forms a stop structure in the axial direction, which can effectively prevent the ball bearing cage 2 from sliding axially during operation.

[0040] Example 2:

[0041] This embodiment provides a tire bead pre-positioner; please refer to [link / reference]. Figures 1 to 5 ,as well as Figure 7 The device includes a preset disk 100, on which a guide claw 200 and a preset claw 300 are provided. Several preset claws 300 are arranged around the circumference of the preset disk 100, and the preset claws 300 can move radially along the preset disk 100, so that the circumference formed by the several preset claws 300 expands or contracts. The guide claw 200 is located between the expanded circumference and the contracted circumference.

[0042] Furthermore, an all-steel radial tire includes two beaded wheels, one on the left and one on the right. Correspondingly, there are two symmetrically arranged pre-set discs 100, and the two pre-set discs 100 have the same structure.

[0043] Furthermore, the guide claw 200 adopts a common roller structure with a frustum-shaped wheel surface, which is rotatably connected to the pre-positioned disc 100. The guide claw 200 provides temporary support for the tire bead.

[0044] Furthermore, the preset disk 100 is provided with a slot extending along the moving path of the preset claw 300, providing moving space for the preset claw 300.

[0045] It should be noted that when the tire bead is not placed on the guide claw 200, several pre-positioned claws 300 are in a retracted state; after the operator places the tire bead on the guide claw 200, several pre-positioned claws 300 are in an expanded state, thereby automatically supporting the tire bead. Several pre-positioned claws 300 are in the same circumference, which can realize automatic centering of the tire bead, which helps to improve the roundness of the tire bead, and thus improve the overall forming quality of the tire.

[0046] In one embodiment of the tire bead pre-positioner, please refer to... Figures 1 to 6 The support shaft 3 is connected to the synchronous pulley 500 via the rocker arm 400. A synchronous belt 600 connects several synchronous pulleys 500. One of the synchronous pulleys 500 is connected to the drive cylinder 700 via the connecting rod 800.

[0047] Furthermore, six pre-set claws 300 are arranged around the circumference of the pre-set disk 100. Correspondingly, six swing rods 400 and six synchronous pulleys 500 are arranged. Tensioning pulleys are arranged between adjacent synchronous pulleys 500. The six synchronous pulleys 500 are located on the same circumference, and the six tensioning pulleys are located on the same circumference. The synchronous belt 600 sequentially connects the synchronous pulleys 500 and the tensioning pulleys to form a closed loop structure.

[0048] Furthermore, an angle is formed between the connecting rod 800 and the rocker arm 400. The synchronous pulley 500 is located at the junction of the second end of the connecting rod 800 and the second end of the rocker arm 400. The first end of the connecting rod 800 is connected to the drive cylinder 700, and the first end of the rocker arm 400 is connected to the support shaft 3. When the movable end of the drive cylinder 700 moves linearly, it pushes the first end of the connecting rod 800 to move in an arc around its second end. The rocker arm 400, the synchronous pulley 500, and the connecting rod 800 are coaxially connected by a key. Therefore, when the synchronous pulley 500 rotates, the first end of the rocker arm 400 moves in an arc around its second end, thereby enabling the pre-positioned claw 300 to move radially along the pre-positioned disc 100. At the same time, the synchronous belt 600 drives all the synchronous pulleys 500 to rotate, thereby driving all the rocker arms 400 to swing. The tire bead on the guide claw 200 is tightened and fixed by the expanded pre-positioned claw 300, realizing the pre-positioning of the tire bead.

[0049] In one embodiment of the tire bead pre-positioner, please refer to... Figures 1 to 5 The guide claw 200 is located on the top of the preset disk 100, and several guide claws 200 are arranged around the circumference of the preset disk 100. Several guide claws 200 are located on the same circumference to improve tire bead stability.

[0050] Specifically, there are two guide claws 200. The two guide claws 200 provide temporary support for the tire bead. After the expanded pre-positioned claws 300 tighten and fix the tire bead, the tire bead separates from the guide claws 200.

[0051] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0052] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0053] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0054] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0055] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A pre-setting claw for a tire bead pre-setting device, characterized in that, It includes a main frame, a support shaft, and a ball bearing frame. The ball bearing frame is sleeved around the main frame, and both are mounted on the support shaft. The ball bearing frame has a number of balls that can roll relative to it.

2. The pre-setting claw for a bead pre-setting device according to claim 1, characterized in that, Both the main frame and the ball bearing frame are configured as frustum-shaped structures, and the small-diameter end of the frustum-shaped structure is connected to the support shaft.

3. The pre-setting claw for a bead pre-setting device according to claim 1, characterized in that, The surface of the ball bearing frame is provided with a plurality of mounting holes, and a gap is left between the ball bearing frame and the main frame to accommodate the balls, and a portion of the balls passes through the mounting holes and is exposed on the outside of the mounting holes.

4. The pre-setting claw for a bead pre-setting device according to claim 3, characterized in that, The main frame is provided with a mounting boss, and the ball bearing frame is connected to the mounting boss.

5. The pre-setting claw for a bead pre-setting device according to claim 4, characterized in that, The main frame is also provided with a limiting boss, which is located on the side of the mounting boss away from the support shaft, and the ball bearing frame abuts against the limiting boss.

6. The pre-setting claw for a bead pre-setting device according to claim 2, characterized in that, The support shaft is provided with a support boss, which abuts against the small-diameter end of the ball bearing frame, and the two have the same diameter.

7. A tire bead pre-positioner, characterized in that, The device includes a preset disk, on which a guide claw and a preset claw as described in any one of claims 1-6 are provided. Several preset claws are arranged around the circumference of the preset disk, and the preset claws can move radially along the preset disk, causing the circumference formed by the several preset claws to expand or contract. The guide claw is located between the expanded circumference and the contracted circumference.

8. The bead pre-positioner according to claim 7, characterized in that, The support shaft is connected to the synchronous pulley via a rocker arm, and a synchronous belt connects several synchronous pulleys. One of the synchronous pulleys is connected to the drive cylinder via a connecting rod.

9. The bead pre-positioner according to claim 7, characterized in that, The guide claws are arranged in a plurality of positions around the circumference of the preset disk.

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