An auxiliary feeding device applied to a long-stroke pipe cutting machine
By designing a simple and compact auxiliary feeding device, the problems of excessive load and wear when the long-stroke pipe cutter is handling long pipes have been solved, thereby improving stability and versatility, extending equipment life and reducing operating noise.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WORLD PRECISE MACHINERY CO LTD CHINA
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-16
AI Technical Summary
Existing long-stroke pipe cutting machines suffer from problems such as excessive load, motor overload, pipe bending, and severe wear of the profile rollers when processing long pipes. Furthermore, the existing support devices are complex in structure and cumbersome to install, making them difficult to adapt to different pipe specifications.
Design an auxiliary feeding device including a mounting base, rollers, and a rotating shaft. The rollers are covered with wear-resistant rubber material and adopt a double bearing structure, connected by a nut thread. The bent edge of the mounting base is rounded, which is suitable for pipes of different specifications. The height of the rollers can be adjusted to fit the bottom of the pipe, reducing frictional resistance and lowering the motor load.
It improves the stability and continuity of the feeding process, extends the service life of the equipment, reduces operating noise and vibration, enhances the versatility and compatibility of the device, and improves the overall reliability and economy of the machine.
Smart Images

Figure CN224359433U_ABST
Abstract
Description
Technical Field
[0001] This utility model is an auxiliary feeding device applied to a long-stroke pipe cutting machine. Background Technology
[0002] In long-stroke metal processing equipment such as laser tube cutting machines, the tube is typically pushed and fed by a rear clamping motor. However, existing feeding systems often face problems such as excessive load and motor overload when handling tubes longer than 8 meters, as they rely solely on the thrust of the rear clamping motor. Especially in the absence of auxiliary support structures, the weight of the long tube can cause bending or uneven movement, further exacerbating feeding resistance. In addition, the profile rollers used to support the tube are prone to severe wear under high-frequency operation, resulting in high replacement frequency and short service life, which in turn affects the stability of equipment operation and overall processing efficiency.
[0003] While some existing equipment attempts to add rollers or guide rail support devices, most are complex in structure, cumbersome to install, occupy a large space, are not conducive to equipment integration and operation, and have poor adjustment flexibility, making it difficult to adapt to changes in different pipe specifications. Therefore, there is an urgent need for an auxiliary feeding device that is compact in structure, easy to install, stable in operation, can effectively share the weight of the pipe and reduce the load on the rear clamping motor, in order to improve the working efficiency and component durability of long-stroke pipe cutters. Utility Model Content:
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an auxiliary feeding device for long-stroke pipe cutting machines.
[0005] An auxiliary feeding device for a long-stroke pipe cutting machine includes a mounting base, rollers, and a rotating shaft. The mounting base is a plate-shaped structure with downward bent edges on both sides. Corresponding through holes are provided on the surfaces of the bent edges on both sides. The rotating shaft is detachably fixed inside the through holes on both sides. The rollers are rotatably sleeved on the rotating shaft. The surface of the mounting base is provided with straight waist holes for connection and installation.
[0006] Furthermore, bearings are directly installed between the shaft and the roller.
[0007] Furthermore, the outer walls at both ends of the shaft are threaded, and the two ends of the shaft pass through through holes and are locked by nuts.
[0008] Furthermore, the outer surface of the roller is made of wear-resistant rubber.
[0009] Furthermore, the bends of the mounting base have rounded corners.
[0010] Beneficial effects: Compared with the prior art, the present invention has the following advantages:
[0011] First, the structure is simple and compact, occupying little space, and the installation method is flexible and convenient. It can be directly fixed to the side of existing pipe support components, and is suitable for pipe cutting machines of different specifications and types, with good versatility and compatibility. Second, by setting an adjustable height elongated hole, the support position of the roller can be adjusted according to the pipe diameter to achieve a close fit with the bottom of the pipe, improving the stability and continuity of the feeding process.
[0012] Secondly, the device employs a dual-bearing, non-powered roller structure, supplemented by a shaft and nut threaded connection. This not only improves the smoothness of roller rotation but also enhances the overall structural robustness and ease of maintenance, facilitating quick replacement or maintenance after long-term operation. The roller is coated with a wear-resistant rubber layer, effectively protecting the pipe surface, increasing friction, improving guiding performance, and reducing operating noise and vibration.
[0013] Furthermore, the rounded corners of the mounting base's bent edges prevent stress concentration, improve fatigue resistance, effectively extend equipment lifespan, and enhance operational safety. The overall device significantly improves the efficiency of the feeding system, reduces the load on the rear clamping motor, and minimizes wear on the copying wheel, thus helping to extend the lifespan of key machine tool components and enhance overall machine reliability and economy. In summary, this invention achieves effective optimization in structure, performance, and applicability, possessing high engineering practical value and promising prospects for widespread application. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of an auxiliary feeding device used in a long-stroke pipe cutting machine;
[0015] Figure 2 This is a schematic diagram of the mounting base;
[0016] In the diagram, 1 is the mounting base, 2 is the roller, 3 is the through hole, and 4 is the straight waist hole. Detailed Implementation
[0017] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.
[0018] An auxiliary feeding device for a long-stroke pipe cutting machine includes a mounting base 1, a roller 2, and a rotating shaft. The mounting base 1 is a plate-shaped structure with downward bent edges on both sides. The surfaces of the bent edges on both sides are provided with corresponding through holes 3. The rotating shaft is detachably fixed inside the through holes 3 on both sides. The roller 2 is rotatably sleeved on the rotating shaft. The surface of the mounting base 1 is provided with straight waist holes 4 for connection and installation.
[0019] By installing this auxiliary feeding device next to the existing support structure of the laser tube cutting machine, the roller 2 contacts the bottom surface of the tube and supports part of its weight. This allows the roller 2 to rotate freely on the shaft as the rear clamping motor pushes the tube forward, thus reducing frictional resistance during pushing. The shaft passes through the through hole 3 of the mounting base 1 and has a detachable structure for easy maintenance or replacement. The straight waist hole 4 on the mounting base 1 allows for fine-tuning of the entire device in the vertical direction to accommodate tubes of different specifications and diameters, ensuring that the roller 2 always maintains proper contact and support with the tube.
[0020] This auxiliary feeding device effectively reduces the load on the rear clamping motor when pushing pipes 8 meters or longer, extending the motor's service life. Simultaneously, because roller 2 replaces part of the original guide roller's contact support function, wear on the guide roller is reduced, improving the overall durability of the machine. Furthermore, the simple structural design and space-saving installation location, along with the waist-hole structure of the mounting base 1, enhances adjustment flexibility and facilitates adaptation to pipes of different sizes, thereby increasing the device's applicability and convenience.
[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An auxiliary feeding device for a long-stroke pipe cutting machine, characterized in that, The device includes a mounting base, rollers, and a rotating shaft. The mounting base is a plate-shaped structure with downward-bent edges on both sides. Corresponding through holes are provided on the surfaces of the bent edges on both sides. The rotating shaft is detachably fixed inside the through holes on both sides. The rollers are rotatably sleeved on the rotating shaft. The surface of the mounting base is provided with straight waist holes for connection and installation.
2. The auxiliary feeding device according to claim 1, characterized in that, The shaft and roller are directly connected by bearings.
3. The auxiliary feeding device according to claim 1, characterized in that, The outer walls at both ends of the shaft are threaded, and the two ends of the shaft pass through through holes and are locked with nuts.
4. The auxiliary feeding device according to claim 1, characterized in that, The outer surface of the roller is made of wear-resistant rubber.
5. The auxiliary feeding device according to claim 1, characterized in that, The bends of the mounting base have rounded corners.