Semi-automatic stainless steel pipe cold cutting device

Abstract

This utility model discloses a semi-automatic stainless steel pipe cold cutting device, including a frame and a circular blade. Two rotatable support rollers for supporting the steel pipe are embedded in the upper surface of the frame. A fixed frame is fixed to the top of the frame behind the support rollers, and a movable frame is vertically and movably connected to the fixed frame. A blade holder for mounting the circular blade is fixed to the bottom of the movable frame. The circular blade and blade holder are located directly above the position between the two support rollers. This utility model uses a manually operated rocker arm to drive the circular blade downwards, and a drive motor drives the stainless steel pipe supported by the support rollers to rotate. Cutting is completed under the pressure of the circular blade and the frictional rolling action. An adjustable baffle can limit the cutting length of the steel pipe, facilitating fixed-length cutting. The entire device has a simple structure, low cost, is portable, and easy to use and maintain. It allows for convenient movement on construction sites to cut pipes at different locations. The cold cutting process improves the cutting effect and enhances the cutting quality.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel pipe cutting technology, specifically a semi-automatic stainless steel pipe cold cutting device. Background Technology

[0002] Cold cutting of stainless steel pipes is a cutting method that achieves spark-free and heat-deformation-free cutting using mechanical or power tools. It avoids the risk of pipe deformation or corrosion caused by the high temperature generated by traditional cutting. At the same time, it has the characteristics of high cut perpendicularity, low burrs, and no flying chips, making it suitable for scenarios with high requirements for precision and safety.

[0003] During the installation of stainless steel pipes, there are often situations where pipe fittings need to be cut on-site for connection. Many construction teams are accustomed to using ordinary saw-type cutting machines for cutting. Although this can achieve the installation purpose, it does not use a cold cutting method, and the cutting and installation effect is difficult to meet the standard requirements. Therefore, it is necessary to design a small stainless steel pipe cold cutting device that is simple in structure, affordable, and easy to carry to cope with the changing installation environment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a semi-automatic stainless steel pipe cold cutting device, which is designed to facilitate the cold cutting of stainless steel pipes with its simple structure, affordable price, and portability.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A semi-automatic stainless steel pipe cold cutting device includes a frame and a circular blade. Two rotatable support rollers for supporting steel pipes are embedded and installed on the upper surface of the frame. A fixed frame is fixed at the top of the frame on the back of the support rollers. A movable frame is vertically and movably inserted into the fixed frame. A blade holder for mounting the circular blade is fixed at the bottom of the movable frame. The circular blade and blade holder are located directly above the position between the two support rollers.

[0007] The fixed frame is rotatably connected to a toothed roller supported on the back of the movable frame and two positioning rollers supported on the front of the movable frame. The movable frame is driven by meshing with the toothed roller through a toothed groove on the back. A connecting frame is fixed on the front of the movable frame. A return spring supported on the fixed frame is installed below the connecting frame. A rocker arm fixedly connected to the roller shaft of the toothed roller is provided on the right side of the fixed frame.

[0008] The frame is equipped with a drive motor, and the output shaft of the drive motor is connected to one of the support rollers via a synchronous pulley and a synchronous belt.

[0009] Preferably, a positioning frame is movably sleeved on the movable frame, and positioning wheels are rotatably connected to both sides of the positioning frame. A fixing plate and a fixing block are respectively fixed on the movable frame above and below the positioning frame, and a pressure spring is installed between the fixing plate and the positioning frame.

[0010] Preferably, the positioning wheel is a rolling bearing, and the positioning wheel is symmetrically arranged on both sides of the circular cutter.

[0011] Preferably, a positioning rod is provided on the right side of the frame, and a baffle supporting the right end of the steel pipe is installed on the positioning rod.

[0012] Preferably, the positioning rod is a screw rod, and the positioning rod is threadedly installed in a threaded connection seat fixed on the right side of the frame.

[0013] Preferably, the positioning rod is equipped with positioning nuts located on both sides of the baffle, and a spring washer is provided between the positioning nut and the baffle.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention uses a manually operated rocker arm to drive a circular cutter downwards. A drive motor then rotates a stainless steel pipe supported by a support roller. Cutting is completed under the pressure of the circular cutter and the action of frictional rolling. An adjustable baffle can limit the cutting length of the steel pipe, facilitating fixed-length cutting. The entire device has a simple structure, low cost, is easy to carry, use, and maintain. It allows for convenient movement around the construction site to cut pipes at different locations. The cold-cutting process improves the cutting effect and quality, bringing convenience to pipe installation. Attached Figure Description

[0016] Figure 1 This is a front view of the present utility model;

[0017] Figure 2 This is the left view of the present invention;

[0018] Figure 3 This is a left view of the internal structure of this utility model.

[0019] In the diagram: 1. Frame; 2. Circular knife; 3. Steel pipe; 4. Support roller; 5. Fixed frame; 6. Movable frame; 7. Knife holder; 8. Toothed roller; 9. Positioning roller; 10. Connecting frame; 11. Return spring; 12. Rocker arm; 13. Drive motor; 14. Synchronous pulley; 15. Synchronous belt; 16. Positioning frame; 17. Positioning wheel; 18. Fixed plate; 19. Fixed block; 20. Pressure spring; 21. Positioning rod; 22. Baffle; 23. Threaded connection seat; 24. Positioning nut; 25. Spring washer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1-3 As shown, this utility model provides a technical solution: a semi-automatic stainless steel pipe cold cutting device, including a frame 1 and a circular knife 2. Two rotatable support rollers 4 for supporting steel pipes 3 are embedded and installed on the upper surface of the frame 1. A drive motor 13 is installed inside the frame 1. The output shaft of the drive motor 13 is connected to one of the support rollers 4 through a synchronous pulley 14 and a synchronous belt 15.

[0022] A fixed frame 5 is fixed at the top of the frame 1 on the back of the support roller 4. A movable frame 6 is vertically and movably inserted into the fixed frame 5. A blade holder 7 for mounting the circular blade 2 is fixed at the bottom of the movable frame 6. The circular blade 2 and the blade holder 7 are located directly above the position between the two support rollers 4.

[0023] A positioning frame 16 is movably sleeved on the movable frame 6. Positioning wheels 17 are rotatably connected to both sides of the positioning frame 16. The positioning wheels 17 are rolling bearings. The positioning wheels 17 are symmetrically arranged on both sides of the circular knife 2. A fixing plate 18 and a fixing block 19 located above and below the positioning frame 16 are fixed on the movable frame 6 respectively. A pressure spring 20 is installed between the fixing plate 18 and the positioning frame 16.

[0024] The fixed frame 5 is rotatably connected to a toothed roller 8 supported on the back of the movable frame 6 and two positioning rollers 9 supported on the front of the movable frame 6. The movable frame 6 is driven by meshing with the toothed roller 8 through the toothed groove on the back. A connecting frame 10 is fixed on the front of the movable frame 6. A return spring 11 supported on the fixed frame 5 is installed below the connecting frame 10. A rocker arm 12 is fixedly connected to the roller shaft of the toothed roller 8 on the right side of the fixed frame 5.

[0025] A positioning rod 21 is provided on the right side of the frame 1. A baffle 22 supporting the right end of the steel pipe 3 is installed on the positioning rod 21. The positioning rod 21 is a screw rod. The positioning rod 21 is threadedly installed in the threaded connection seat 23 fixed on the right side of the frame 1. Positioning nuts 24 located on both sides of the baffle 22 are installed on the positioning rod 21, and spring washers 25 are provided between the positioning nuts 24 and the baffle 22.

[0026] Working principle:

[0027] Loosen the positioning nut 24, measure the required cutting length of the steel pipe 3, adjust the position of the baffle 22 left and right to ensure that the distance between it and the circular blade 2 meets the cutting length, fix the position with the positioning nut 24, place the steel pipe 3 to be cut on the two support rollers 4, press down the rocker arm 12, the toothed roller 8 drives the movable frame 6 to descend, thereby driving the blade holder 7 and the positioning frame 16 to descend, the circular blade 2 and the positioning wheel 17 are both pressed on the top of the steel pipe 3, start the drive motor 13, drive the steel pipe 3 to rotate through the synchronous wheel 14, the synchronous belt 15 and the support rollers 4, the circular blade 2 also rotates due to friction, under the pressure applied by the circular blade 2 and the rotation of the circular blade 2 and the steel pipe 3, the fixed-length cold cut is completed, release the rocker arm 12, the return spring 11 and the pressure spring 20 automatically push the movable frame 6 and the positioning frame 16 upward, the circular blade 2 and the positioning wheel 17 move upward and separate from the steel pipe 3, with a semi-automatic cutting effect, simple and convenient operation.

[0028] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A semi-automatic stainless steel pipe cold cutting device, comprising a rack (1) and a circular knife (2), characterized in that: Two rotatable support rollers (4) for supporting steel pipes (3) are inlaid on the upper surface of the frame (1). A fixed frame (5) is fixed on the top of the frame (1) on the back of the support rollers (4). A movable frame (6) is vertically inserted into the fixed frame (5). A knife holder (7) for installing a circular knife (2) is fixed at the bottom of the movable frame (6). The circular knife (2) and the knife holder (7) are located directly above the position between the two support rollers (4). The fixed frame (5) is rotatably connected to a toothed roller (8) supported on the back of the movable frame (6) and two positioning rollers (9) supported on the front of the movable frame (6). The movable frame (6) is driven by meshing with the toothed roller (8) through the toothed groove on the back. A connecting frame (10) is fixed on the front of the movable frame (6). A return spring (11) supported on the fixed frame (5) is installed below the connecting frame (10). A rocker arm (12) is fixedly connected to the roller shaft of the toothed roller (8) on the right side of the fixed frame (5). The frame (1) is equipped with a drive motor (13), and the output shaft of the drive motor (13) is connected to one of the support rollers (4) by a synchronous pulley (14) and a synchronous belt (15).

2. The semi-automatic stainless steel pipe cold cutting device according to claim 1, characterized in that: A positioning frame (16) is movably sleeved on the movable frame (6). Positioning wheels (17) are rotatably connected to both sides of the positioning frame (16). A fixing plate (18) and a fixing block (19) are respectively fixed on the movable frame (6) above and below the positioning frame (16). A pressure spring (20) is installed between the fixing plate (18) and the positioning frame (16).

3. The semi-automatic stainless steel pipe cold cutting device according to claim 2, characterized in that: The positioning wheel (17) is a rolling bearing, and the positioning wheel (17) is symmetrically arranged on both sides of the circular cutter (2).

4. The semi-automatic stainless steel pipe cold cutting device according to claim 1, characterized in that: A positioning rod (21) is provided on the right side of the frame (1), and a baffle (22) supporting the right end of the steel pipe (3) is installed on the positioning rod (21).

5. The semi-automatic stainless steel pipe cold cutting device according to claim 4, characterized in that: The positioning rod (21) is a screw rod, and the positioning rod (21) is threadedly installed in the threaded connection seat (23) fixed on the right side of the frame (1).

6. The semi-automatic stainless steel pipe cold cutting device according to claim 5, characterized in that: The positioning rod (21) is equipped with positioning nuts (24) located on both sides of the baffle (22), and a spring washer (25) is provided between the positioning nut (24) and the baffle (22).

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