A thimble roller for tire tread punching

Abstract

The utility model provides a kind of ejector roller for tread punching, including roller body and multiple ejector pins.The roller body is discoid structure, with central mounting hole, can be set on rotating drive shaft to realize rotation around axis.Multiple ejector pins are arranged at the outer circumferential part of roller body, and are regularly spaced along circumferential direction;Threaded mounting hole is set on the position corresponding to each ejector pin on the roller body, and the ejector pin is detachably installed in threaded mounting hole through threaded structure, and extends outward along radial direction or approximately radial direction direction.Each ejector pin includes a punching part with a tapered or pointed conical front end, which can pierce the tire tread material during the rotation of the roller, thereby forming a through hole on the tread.The structure realizes the detachability, replacement and flexibility of the ejector pin, improves the adaptability and service life of the punching roller, and is suitable for automatic punching operation in tire manufacturing process.

Description

Technical Field

[0001] This utility model relates to the field of tire processing equipment technology, and in particular to a pin roller for tread drilling. Background Technology

[0002] In tire manufacturing, to improve the tire's heat dissipation, water drainage, and flexibility, it is often necessary to create several evenly distributed small holes on the tire tread. Currently, commonly used tread perforation methods include stamping dies, single-ejector punching, and roller punching. While stamping dies can punch out multiple holes at once, their complex structure leads to high manufacturing and maintenance costs, and they are prone to uneven hole diameters or hole wall damage when applied to tires of varying thicknesses. Single-ejector punching, although flexible, is inefficient, struggles to ensure consistent hole spacing, and is unsuitable for mass production.

[0003] Existing roller-type treading devices typically have multiple ejector pins fixed to the outer circumference of the roller. As the roller rotates, the ejector pins contact the tire tread to create holes. While these devices are highly efficient, their ejector pins are mostly welded or cast as a single piece, lacking detachability. When the ejector pins wear out or are damaged, the entire roller often needs to be replaced, increasing maintenance costs and shortening the equipment's lifespan. Furthermore, because the ejector pin positions are fixed, the tread spacing cannot be flexibly adjusted to different tire sizes or patterns, resulting in poor applicability.

[0004] In summary, existing tread perforation rollers generally have the following shortcomings: 1. The ejector pin is a fixed structure, which cannot be disassembled or replaced, resulting in high maintenance costs; 2. The hole spacing is fixed and lacks adjustability, making it difficult to adapt to different tire tread processing requirements; 3. If a local ejector pin fails during use, the overall function of the device will be limited, reducing production efficiency.

[0005] Therefore, there is an urgent need for a tread drilling roller with a detachable and easily replaceable ejector pin and an adjustable hole spacing to solve the problems existing in the current technology. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a throttle roller for tread drilling. The throttle roller features detachable and easily replaceable throttle pins, and the hole spacing is adjustable.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A tread perforation roller includes: a roller body and a plurality of tread pins; the roller body has a disc-shaped structure and a central mounting hole for mounting on a rotary drive shaft, so that the roller body rotates around the axis under drive; the plurality of tread pins are disposed on the outer periphery of the roller body and are arranged at regular intervals along the circumferential direction of the roller body; a threaded mounting hole is provided on the roller body corresponding to the position of each tread pin, and each tread pin is detachably mounted in the threaded mounting hole of the roller body through a threaded structure, and the tread pins extend outward in a radial or approximately radial direction; the tread pins include a perforation portion having a conical or pointed conical front end, which can puncture the tire tread material in contact with the roller during rotation to form a through hole on the tire tread.

[0008] Furthermore, the roller body has an annular groove structure on the inner surface of the central mounting hole to reduce the weight of the roller and to provide a limiting function during assembly.

[0009] Furthermore, the roller body is made of wear-resistant metal material and its surface is hardened.

[0010] Furthermore, the ejector pin is made of high-strength alloy steel, and its surface is nitrided or hard chrome plated to enhance the hardness and wear resistance of the ejector pin.

[0011] Furthermore, the inner wall of the central mounting hole of the roller body is provided with a keyway for engaging with the key on the drive shaft to achieve reliable torque transmission.

[0012] The aforementioned ejector roller for tire tread drilling features threaded mounting holes on its body, allowing for detachable threaded installation of the ejector pins. This enables individual replacement of worn or damaged pins without replacing the entire roller, reducing maintenance costs and extending service life. Furthermore, the ejector pin position can be adjusted as needed, allowing for flexible control of the drilling spacing and adapting to different tire tread specifications and patterns, significantly improving the applicability and practical value of the device. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the ejector pin roller provided by this utility model; Figure 2 This is a cross-sectional view of the ejector roller provided by this utility model. Detailed Implementation

[0014] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] like Figure 1 and Figure 2 As shown, this application provides a pin roller for tread drilling, comprising: a roller body 1 and a plurality of pins 2. Specifically, the roller body 1 has a disc-shaped structure and a central mounting hole 11 for mounting on a rotary drive shaft, so that the roller body 1 rotates around the axis under drive. Multiple ejector pins 2 are disposed on the outer periphery of the roller body 1 and are arranged at regular intervals along the circumference of the roller body 1. A threaded mounting hole 12 is provided on the roller body 1 corresponding to the position of each ejector pin 2. Each ejector pin 2 is detachably installed in the threaded mounting hole 12 of the roller body 1 through a threaded structure, and the ejector pin 2 extends outward in a radial or approximately radial direction. The ejector pin 2 includes a perforated part with a conical or pointed front end, which can puncture the tire tread material it contacts during the rotation of the roller to form a through hole on the tire tread.

[0016] The ejector roller of this application adopts a threaded structure with a detachable ejector pin 2 design, which solves the problem of traditional rollers where the ejector pins are welded or integrally cast and cannot be replaced. This significantly reduces the maintenance cost of replacing the entire roller set due to local wear and extends the service life of the equipment. Secondly, the ejector pins 2 are arranged at regular intervals along the circumference of the roller body 1, and their positions can be adjusted through the threaded mounting holes 12, thus making the drilling spacing flexible and adaptable to the tread drilling needs of different specifications or tread designs, improving the applicability of the device. In addition, the threaded connection structure allows the installation depth of the ejector pin 2 to be flexibly adjusted as needed, thereby controlling the length of the ejector pin tip extending beyond the surface of the roller body 1, achieving precise control of the drilling depth, and further improving the drilling quality and consistency. The overall structural design is reasonable and effectively overcomes the technical defects of existing roller-type drilling devices, such as fixed hole spacing, high maintenance costs, and poor adaptability, improving the flexibility and precision processing capabilities of the roller in the tire manufacturing process.

[0017] The roller body 1 has an annular groove structure 13 on the inner surface of the central mounting hole 11. This structure is used to reduce the weight of the roller and to limit the position during assembly. It optimizes the overall mass distribution of the roller structure, reduces the load and wear during equipment operation, and enhances the positioning accuracy through the cooperation between the groove and the assembly parts. It also improves the stability and safety of the connection between the roller and the drive shaft.

[0018] Furthermore, the roller body 1 is made of wear-resistant metal material and its surface is hardened to maintain a good surface morphology during long-term drilling operations, avoiding problems such as pin loosening or roller imbalance caused by wear.

[0019] The ejector pin 2 is made of high-strength alloy steel, and its surface is nitrided or hard chrome plated to enhance the hardness and wear resistance of the ejector pin 2, reduce the replacement frequency and maintenance cost, and improve the continuity and economy of the overall production line.

[0020] The inner wall of the central mounting hole 11 of the roller body 1 is provided with a keyway for engaging with the key on the drive shaft to achieve reliable torque transmission. This structure can withstand large rotational impact loads, ensuring that the roller maintains axial and radial stability during long-term, high-intensity operation, and effectively avoiding problems such as hole misalignment or poor machining caused by loose connections.

[0021] The above description of embodiments of the present invention, through which those skilled in the art are able to implement or use the present invention, will be readily apparent to those skilled in the art. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A pin roller for tread drilling, characterized in that, include: The roller body (1) has a disc-shaped structure and a central mounting hole (11) for mounting on the rotary drive shaft so that the roller body (1) rotates around the axis under the drive. Multiple ejector pins (2) are disposed on the outer periphery of the roller body (1) and arranged at regular intervals along the circumferential direction of the roller body (1); The roller body (1) is provided with threaded mounting holes (12) corresponding to the position of each ejector pin (2). Each ejector pin (2) is detachably installed in the threaded mounting hole (12) of the roller body (1) through a threaded structure, and the ejector pin (2) extends outward in a radial or approximately radial direction. The ejector pin (2) includes a punch with a conical or pointed front end, which is capable of piercing the tire tread material it contacts during the rotation of the roller to form a through hole on the tire tread.

2. The ejector roller for tread drilling according to claim 1, characterized in that, The roller body (1) has an annular groove structure (13) on the inner surface of the central mounting hole (11) to reduce the weight of the roller and to limit its position during assembly.

3. The ejector roller for tread drilling according to claim 1, characterized in that, The roller body (1) is made of wear-resistant metal material and its surface is hardened.

4. The ejector roller for tread drilling according to claim 1, characterized in that, The ejector pin (2) is made of high-strength alloy steel and its surface is nitrided or hard chrome plated to enhance the hardness and wear resistance of the ejector pin (2).

5. The ejector roller for tread drilling according to claim 1, characterized in that, The inner wall of the central mounting hole (11) of the roller body (1) is provided with a keyway for engaging with the key on the drive shaft to achieve reliable torque transmission.

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