A tool for rolling a conical tube by a three-roll plate rolling machine
Patent Information
- Application Number
- CN202522615988.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-10
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-10
AI Technical Summary
[0005]本实用新型所要解决的技术问题：目前，锥形板件主要采用三辊卷板机通过画等分线、人工调整板位逐条压制的方式成型，但该方式存在明显缺陷：精度难以保证，成形质量依赖人工经验，错边量与间隙难以控制，影响产品几何精度；加工效率低且工期不易控制，需反复画线调整，卷制周期长且不稳定；操作烦琐且存在安全隐患，自动化程度低，劳动强度大，大尺寸板件移位存在安全风险；无法采用专用模具，不同规格板件尺寸差异大、批量小，专用模具成本高、周期长
1.本实用新型通过底部支撑座、挡辊装置及连接销轴构成可转换工位的辅助工装，将挡辊装置布置于卷板机进料与出料两侧，使滚筒与锥管毛坯侧边线滚动接触并垂直于进出料方向，实现了板材卷制过程的连续引导与正交限位，有效避免偏移和扭转，显著提升了锥形板件的成形精度与锥度一致性；挡辊装置可绕连接销轴在工作位置与非工作位置间快速转换，既保证了卷制时的精准定位，又避免了对其他作业造成干扰，提高了设备通用性和利用率；该设计将传统依赖人工经验反复画线、逐点调整的方式转变为工装自动导向，大幅降低了劳动强度和安全风险，使操作人员无需进入危险区域即可完成卷制。
Smart Images
Figure CN224913417U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel boring machine technology, specifically to a tooling for rolling tapered tubes using a three-roll plate rolling machine. Background Technology
[0002] Tunnel boring machines (TBMs) are the core equipment for tunnel excavation in subways, railways, and water conservancy and hydropower projects. Their shield body components are mostly conical cylindrical structures formed by welding thick plates. The manufacturing precision of the conical plates directly affects the alignment of the axis, the welding quality, and the overall performance.
[0003] Currently, tapered plates are mainly formed by three-roll plate rolling machines, which involve drawing dividing lines and manually adjusting the plate positions to press each piece individually. However, this method has significant drawbacks: precision is difficult to guarantee, forming quality depends on manual experience, and the amount of misalignment and gaps is difficult to control, affecting the geometric accuracy of the product; processing efficiency is low and the production period is difficult to control, requiring repeated line drawing and adjustment, resulting in a long and unstable rolling cycle; operation is cumbersome and poses safety hazards, with low automation, high labor intensity, and safety risks associated with the displacement of large-sized plates; and dedicated molds cannot be used, as different specifications of plates have large size differences, small batches, and dedicated molds are costly and time-consuming.
[0004] Therefore, this utility model provides a tooling for rolling tapered tubes using a three-roll plate rolling machine to solve the above-mentioned problems. Utility Model Content
[0005] The technical problem this utility model aims to solve is as follows: Currently, tapered plates are mainly formed by three-roll plate rolling machines through drawing equidistant lines and manually adjusting the plate positions one by one. However, this method has obvious defects: the accuracy is difficult to guarantee, the forming quality depends on manual experience, the misalignment and gap are difficult to control, affecting the geometric accuracy of the product; the processing efficiency is low and the production period is difficult to control, requiring repeated drawing and adjustment, resulting in a long and unstable rolling cycle; the operation is cumbersome and poses safety hazards, with low automation, high labor intensity, and safety risks associated with the displacement of large-sized plates; and it is impossible to use special molds, as different specifications of plates have large size differences and small batches, while special molds are costly and have long cycles.
[0006] This utility model provides the following technical solution: a tooling for rolling tapered tubes using a three-roll plate rolling machine, comprising a bottom support, a roller blocking device, and a connecting pin; the roller blocking device is mounted on the bottom support via the connecting pin, and the roller blocking device includes a roller blocking base, a roller blocking shaft, a roller, a bushing, an end cap, and a lubricating nozzle; the roller blocking base is welded to the roller blocking shaft, the roller is fitted onto the roller blocking shaft via the bushing, the end cap is located at the end of the roller blocking shaft, and the lubricating nozzle is located on the roller blocking shaft.
[0007] Preferably, one set each of the support base, the guide roller device, and the connecting pin is arranged at the feeding and discharging points on the tilting frame side of the three-roll plate rolling machine.
[0008] Preferably, the rollers in the retaining roller device are used to contact the side edge of the tapered tube blank and guide it into or out of the plate rolling machine.
[0009] Preferably, the bottom support is connected to the guide roller device via a connecting pin, so that the guide roller device can switch between a working position and a non-working position.
[0010] Preferably, in the working state, the axis of the roller of the retaining roller device is arranged perpendicular to the feeding direction or the discharging direction of the three-roll plate bending machine.
[0011] The beneficial effects of this utility model are as follows: 1. This utility model uses a bottom support base, a roller stop device, and a connecting pin to form an auxiliary tooling with a convertible workstation. The roller stop device is arranged on both sides of the plate rolling machine's feed and discharge sides, so that the roller makes rolling contact with the side line of the tapered tube blank and is perpendicular to the feed and discharge directions. This achieves continuous guidance and orthogonal limiting during the plate rolling process, effectively avoiding deviation and torsion, and significantly improving the forming accuracy and taper consistency of the tapered plate. The roller stop device can quickly switch between working and non-working positions around the connecting pin, which not only ensures accurate positioning during rolling but also avoids interference with other operations, improving the equipment's versatility and utilization rate. This design transforms the traditional method of relying on manual experience to repeatedly draw lines and adjust point by point into automatic tooling guidance, greatly reducing labor intensity and safety risks, allowing operators to complete the rolling without entering dangerous areas. Attached Figure Description
[0012] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a schematic diagram of the non-working state of the tapered tube rolling auxiliary tooling of this utility model; Figure 3 This is a schematic diagram of the structure of the roller retaining device of this utility model; Figure 4 This is a schematic diagram of the cone plate rolling process of this utility model.
[0014] In the diagram: 1. Bottom support seat; 2. Baffle roller device; 21. Baffle roller base; 22. Baffle roller shaft; 23. Roller; 24. Bushing; 25. End cover; 26. Lubricating nozzle; 3. Connecting pin. Detailed Implementation
[0015] like Figures 1 to 4 As shown, a tooling for rolling tapered tubes using a three-roll plate rolling machine includes a bottom support 1, a roller blocking device 2, and a connecting pin 3. The roller blocking device 2 is mounted on the bottom support 1 via the connecting pin 3. The roller blocking device 2 includes a roller blocking base 21, a roller blocking shaft 22, a roller 23, a bushing 24, an end cap 25, and a lubricating nozzle 26. The roller blocking base 21 is welded to the roller blocking shaft 22. The roller 23 is fitted onto the roller blocking shaft 22 via the bushing 24. The end cap 25 is located at the end of the roller blocking shaft 22, and the lubricating nozzle 26 is located on the roller blocking shaft 22. The above design achieves stable installation and station switching of the roller device 2 through the bottom support 1 and connecting pin 3, significantly improving the accuracy and controllability of the rolling process; the mating structure of the roller 23 and the bushing 24 allows the side edge line of the tapered tube blank to be continuously guided and limited, transforming the traditional rolling method that relies on manual experience into tooling positioning guarantee, effectively avoiding plate offset, greatly improving forming accuracy and processing efficiency, while reducing manual intervention, lowering labor intensity and safety risks; the design of the lubricating nozzle 26 and end cap 25 ensures the rotation flexibility and structural reliability of the roller 23, extending the service life of the tooling; the overall structure is simple and the manufacturing cost is low, and it can be used for rolling tapered plates of different specifications, avoiding the high investment of special molds, and is particularly suitable for the efficient, safe and precise processing of large, multi-variety, small-batch tapered plates in the manufacture of tunnel boring machines. like Figures 1 to 4 As shown, the bottom support 1, the stop roller device 2, and the connecting pin 3 need to be arranged in one set each at the feeding and discharging points on the side of the three-roll plate rolling machine's tilting frame. A complete set of tooling is configured at the feeding and discharging positions on the side of the three-roll plate rolling machine's tilting frame. This realizes synchronous limiting and guidance at both ends during the rolling process of the tapered tube blank, effectively avoiding problems such as plate offset, torsion, and taper inaccuracy that are easily caused by single-sided guidance. It significantly improves the overall forming accuracy and taper consistency of the tapered plate. At the same time, the symmetrical arrangement of the two workstations makes the plate feeding and discharging more stable and smooth, reduces the frequency of repeated manual adjustments, reduces labor intensity, and greatly improves rolling efficiency and operational safety. like Figures 1 to 4 As shown, the roller 23 in the roller device 2 is used to contact the side edge of the tapered tube blank and guide it into or out of the rolling machine. Through the rolling contact between the roller 23 and the side edge of the tapered tube blank, continuous guidance and precise positioning of the plate feeding and discharging process are realized. The traditional manual push-pull adjustment is replaced by automatic tooling guidance, which not only significantly reduces frictional resistance and reduces labor intensity, making the plate conveying more stable and smooth, but also effectively avoids problems such as plate offset and taper inaccuracy caused by manual intervention during the rolling process, greatly improving forming accuracy and processing efficiency. like Figures 1 to 4As shown, the bottom support 1 is connected to the guide roller device 2 via a connecting pin 3, allowing the guide roller device 2 to switch between working and non-working positions. By hinged to the bottom support 1 and the guide roller device 2 via the connecting pin 3, the guide roller device 2 can be quickly switched between working and non-working positions, significantly improving the adaptability and flexibility of the tooling. When rolling conical plates, the guide roller device 2 can quickly switch to the working position to provide precise guidance, and when not in use, it can be easily folded back to the non-working position, effectively avoiding interference with other operations of the plate rolling machine (such as rolling cylindrical plates), improving the equipment's versatility and utilization rate. At the same time, this conversion structure eliminates the need for repeated disassembly and assembly, reducing debugging time, lowering labor intensity, and simplifying the operation process. like Figures 1 to 4 As shown, in the working state, the axis of the roller 23 of the guide roller device 2 is arranged perpendicular to the feeding or discharging direction of the three-roll plate rolling machine. By arranging the axis of the roller 23 perpendicular to the feeding and discharging direction of the plate rolling machine, the optimal contact angle between the roller 23 and the side edge of the tapered tube blank is ensured. This achieves precise orthogonal limiting and rolling guidance of the plate movement path, effectively avoiding lateral force, plate offset or torsional deformation caused by angle deviation, and significantly improving the stability of the rolling process and the forming accuracy of the tapered plate. At the same time, this vertical layout allows the roller 23 to fully utilize the advantages of rolling friction, minimizing the feeding and discharging resistance, making the plate conveying smoother and more efficient, and reducing the risk of jamming and surface scratches. The overall working process is as follows: The operator sends the cut conical tube blank to the feed port of the three-roll plate rolling machine and adjusts the position of the blank so that its small opening side line contacts the roller 23 of the tooling at the feed point. The rolling of the roller 23 guides the blank to enter the plate rolling machine smoothly. At the same time, the stop roller device 2 continuously limits the side line of the plate, thereby ensuring the taper accuracy during the rolling process and preventing the plate from deviating. After the conical tube blank enters the predetermined position, the upper roller of the plate rolling machine presses down and rolls according to the conventional plate rolling process, keeping the small opening side line of the conical tube on the discharge side in constant contact with the roller 23 of the tooling at the discharge point. The stop roller device 2, which is symmetrically arranged at both ends, achieves synchronous guidance and orthogonal limiting, effectively avoiding plate twisting and taper inaccuracy. Then, the plate is rolled repeatedly according to the thickness and taper requirements until the large and small opening diameters of the conical tube meet the design requirements, and the rolling is completed.
[0016] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A tooling for rolling tapered tubes using a three-roll plate rolling machine, characterized in that: It includes a bottom support base (1), a roller retainer device (2), and a connecting pin (3); the roller retainer device (2) is mounted on the bottom support base (1) via the connecting pin (3), and the roller retainer device (2) includes a roller retainer base (21), a roller retainer shaft (22), a roller (23), a bushing (24), an end cap (25), and a lubricating nozzle (26); the roller retainer base (21) is welded to the roller retainer shaft (22), the roller (23) is fitted onto the roller retainer shaft (22) via the bushing (24), the end cap (25) is located at the end of the roller retainer shaft (22), and the lubricating nozzle (26) is located on the roller retainer shaft (22).
2. The tooling according to claim 1, characterized in that: The bottom support (1), the roller stop device (2), and the connecting pin (3) need to be arranged in one set each at the feed and discharge points on the side of the three-roll plate rolling machine's tilting frame.
3. The tooling for rolling tapered tubes on a three-roll plate rolling machine according to claim 1, characterized in that: The roller (23) in the roller device (2) is used to contact the side edge of the tapered tube blank and guide it into or out of the rolling mill.
4. The tooling for rolling tapered tubes on a three-roll plate rolling machine according to claim 1, characterized in that: The bottom support (1) is connected to the roller device (2) via a connecting pin (3), so that the roller device (2) can switch between the working position and the non-working position.
5. The tooling for rolling tapered tubes on a three-roll plate rolling machine according to claim 1, characterized in that: In the working state, the axis of the roller (23) of the roller device (2) is arranged perpendicular to the feeding direction or the discharging direction of the three-roll plate bending machine.