Stainless steel pipe cutting and blanking method

Abstract

In the stainless steel pipe moving process, a moving trolley and a stainless steel pipe move in the same direction and at the same speed, a stainless steel pipe clamping mechanism clamps the front side and the rear side of the to-be-cut part of the stainless steel pipe, and a saw disc structure cuts the stainless steel pipe; the feeding end of the moving trolley limits the stainless steel pipe through a stainless steel pipe limiting structure and prevents the front end of the stainless steel pipe from drooping; when the front section of the stainless steel pipe is cut off by the saw disc structure to form a stainless steel pipe section, and the front middle section of the stainless steel pipe section is moved to the position above the conveying mechanism of the stainless steel pipe discharging mechanism, the stainless steel pipe clamping mechanism loosens the rear end of the stainless steel pipe section to enable the stainless steel pipe section to be located on the conveying mechanism, and the moving trolley moves reversely and resets. According to the stainless steel pipe cutting and discharging method, in the cutting and discharging process, it can be guaranteed that a notch of a stainless steel rod is flat and perpendicular, and the cut stainless steel pipe section can stably fall on a conveying mechanism of a stainless steel pipe discharging mechanism.

Description

Technical Field

[0001] This invention relates to the field of stainless steel pipe cutting, and more particularly to a method for cutting and blanking stainless steel pipes. Background Technology

[0002] In the production process of stainless steel square tubes, the stainless steel tubes need to be cut. On the production line, multiple sets of vertically arranged active conveyor rollers located in front of the cutting device provide the power for the stainless steel tubes to move forward. Currently, during the cutting process of stainless steel square tubes, although two sets of clamping structures can clamp the front and rear sides of the stainless steel tube to be cut, the clamping method is to use two sets of clamping cylinders to clamp the stainless steel tube from the left and right sides towards the middle. However, when the length of the stainless steel tube to be cut is long, the front end of the stainless steel tube is suspended in the air, and there is no limit at the rear of the stainless steel tube to be cut. This causes the front end of the stainless steel tube to droop and the rear end to tilt. The stainless steel tube tilts, which not only causes the stainless steel tube cut to be tilted, but also prevents the cut stainless steel tube segment from falling properly onto the conveyor rollers of the stainless steel tube unloading mechanism, or even falling off the conveyor line. Moreover, the tilted stainless steel tube cut may damage the saw blade, posing a safety hazard. Summary of the Invention

[0003] The purpose of this invention is to provide a method for cutting and blanking stainless steel pipes. During the cutting and blanking process, it can not only ensure that the cut of the stainless steel rod is flat and vertical, but also allow the cut stainless steel pipe segment to fall smoothly onto the conveying mechanism of the stainless steel pipe blanking mechanism.

[0004] To achieve the above objectives, the present invention provides a method for cutting stainless steel pipes. During the movement of the stainless steel pipe along its length toward the stainless steel pipe cutting mechanism, a moving trolley moves in the same direction and at the same speed as the stainless steel pipe. A stainless steel pipe clamping mechanism on the moving trolley clamps the front and rear sides of the section to be cut. A saw disc structure on the moving trolley cuts the stainless steel pipe. The feeding end of the moving trolley is limited by a stainless steel pipe limiting structure to prevent the front end from sagging. When the saw disc structure cuts off the front section of the stainless steel pipe to form a stainless steel pipe segment, and the front and middle sections of the stainless steel pipe segment have moved above the conveying mechanism of the stainless steel pipe cutting mechanism, the stainless steel pipe clamping mechanism releases the rear end of the stainless steel pipe segment, allowing the segment to rest on the conveying mechanism. Meanwhile, the moving trolley moves in the opposite direction and resets, preparing the saw disc structure for the next cut.

[0005] As a further improvement of the present invention, the conveying mechanism conveys the stainless steel pipe section at a speed greater than the moving speed of the stainless steel pipe.

[0006] As a further improvement of the present invention, when the front end of the stainless steel pipe droops during the movement, the front end of the stainless steel pipe is guided and supported by an anti-droop support structure behind the discharge end of the moving trolley, so as to ensure that the front end of the stainless steel pipe can move to the top of the conveying mechanism of the unloading mechanism.

[0007] As a further improvement of the present invention, the stainless steel tube limiting structure clamps the stainless steel tube in the middle by means of an upper roller and a lower roller.

[0008] Beneficial effects Compared with the prior art, the advantages of the stainless steel pipe cutting and blanking method of the present invention are as follows: 1. As the stainless steel pipe moves along its length toward the stainless steel pipe unloading mechanism, the moving trolley clamps the front and rear sides of the section to be cut using a stainless steel pipe clamping mechanism, while simultaneously cutting the stainless steel pipe using a saw disc structure. The feeding end of the moving trolley is limited by a stainless steel pipe limiting structure to prevent the front end from sagging. Upon completion of the cutting, the front section of the cut stainless steel pipe segment has already landed on the conveying mechanism of the unloading mechanism. At this point, the clamping mechanism simply releases the rear end of the pipe segment, and the middle section also lands on the conveying mechanism, which then transports the pipe segment forward. This method ensures that the cut of the stainless steel pipe is not only flat and vertical during the cutting process, but also allows the cut stainless steel pipe segment to land smoothly on the conveying mechanism of the unloading mechanism.

[0009] 2. The conveying speed of the stainless steel pipe segment is greater than the moving speed of the stainless steel pipe. After the stainless steel pipe segment is cut off, it is quickly conveyed forward by the conveying mechanism to avoid the front end of the stainless steel pipe and the rear end of the stainless steel pipe segment from touching each other.

[0010] 3. The stainless steel pipe limiting structure guides and limits the stainless steel pipe through the joint action of the upper and lower rollers. The structure is simple and has low production and maintenance costs.

[0011] 4. When the length of the stainless steel pipe to be cut is long, if the front end of the stainless steel pipe droops, the guide grooves in the anti-droop support structure can guide the front end of the stainless steel pipe when it passes through the anti-droop support structure, so that it returns to a horizontal state and falls on the support roller. This ensures that the front end of the stainless steel pipe can move above the conveying mechanism of the stainless steel pipe unloading mechanism, and avoids the stainless steel pipe segment from accidentally falling off the conveyor line when it is cut.

[0012] The invention will become clearer from the following description, taken in conjunction with the accompanying drawings, which are used to explain embodiments of the invention. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is one of the schematic diagrams showing the working state of a stainless steel pipe cutting and blanking device. Figure 2 This is the second schematic diagram showing the working state of the stainless steel pipe cutting and blanking device. Figure 3 This is the third schematic diagram showing the working state of the stainless steel pipe cutting and blanking device. Figure 4 This is the fourth schematic diagram showing the working state of the stainless steel pipe cutting and blanking device. Detailed Implementation

[0015] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0016] Example Specific embodiments of the present invention are as follows: Figures 1 to 4 As shown, a stainless steel pipe cutting and unloading device includes a lifting cutting mechanism 3 and a stainless steel pipe unloading mechanism 9 arranged sequentially along the feeding direction. The lifting cutting mechanism 3 includes a lifting mechanism and a saw disc structure 31 connected together. The lifting mechanism of the lifting cutting mechanism 3 is mounted on a moving trolley 2. A stainless steel pipe clamping mechanism 5 is installed on the moving trolley 2. The moving trolley 2 is movably mounted on a base 1 and is connected to a trolley drive mechanism 6. A stainless steel pipe limiting structure 4 is connected to the feeding end of the moving trolley 2. An anti-sagging support structure 7 corresponding to the front end of the stainless steel pipe 8 is provided between the rear of the discharge end of the moving trolley 2 and the conveying mechanism 91 of the stainless steel pipe unloading mechanism 9.

[0017] In this embodiment, two parallel guide rails 11 are installed on the top of the base 1, and several rollers 21 are rotatably connected to the bottom of the moving trolley 2, with the rollers 21 rolling in contact with the guide rails 11.

[0018] The stainless steel pipe limiting structure 4 includes a base 41 connected to the feed end of the moving trolley 2. The base 41 is equipped with an upper roller 43 and a lower roller 42 located on the upper and lower sides of the stainless steel pipe 8, respectively. The stainless steel pipe limiting structure 4 also includes a lifting seat 44 that slides vertically with the base 41. The upper roller 43 is rotatably connected to the lifting seat 44, and the lower roller 42 is rotatably connected to the base 41. The stainless steel pipe limiting structure 4 clamps the stainless steel pipe 8 in the middle via the upper roller 43 and the lower roller 42. The rotation axes of the upper roller 43 and the lower roller 42 are parallel and horizontally arranged, and their rotation axes are perpendicular to the forward direction of the stainless steel pipe 8. The lifting seat 44 is connected to the base 41 via a lifting adjustment structure.

[0019] In this embodiment, the lifting and adjusting structure includes a vertically arranged screw 45, with a handle connected to the top of the screw 45, a threaded connection between the middle of the screw 45 and the base 41, and a rotatable connection between the lower end of the screw 45 and the lifting seat 44. By rotating the handle of the screw 45, the upper roller 43 can be raised or lowered, thereby adjusting the distance between the upper roller 43 and the lower roller 42.

[0020] The anti-sagging support structure 7 includes an inclined guide groove 71, which is fixed relative to the base 1. The height of the guide groove 71 gradually increases along the conveying direction of the stainless steel pipe 8. The vertical cross-section of the guide groove 71 is V-shaped, and the opening faces upward.

[0021] The anti-sagging support structure 7 also includes a support roller 72, which is located between the guide groove 71 and the conveying mechanism 91 of the stainless steel tube unloading mechanism 9. The highest point of the guide groove 71 is not higher than the support roller 72, and the support roller 72 is not higher than the conveying mechanism 91 of the stainless steel tube unloading mechanism 9. In this embodiment, both the guide groove 71 and the support roller 72 are mounted on the base 1.

[0022] The conveying mechanism 91 of the stainless steel pipe feeding mechanism 9 includes at least two parallel active conveying rollers. Each active conveying roller is arranged sequentially along the forward direction of the stainless steel pipe 8.

[0023] The stainless steel pipe clamping mechanism 5 includes a first clamping mechanism 51 and a second clamping mechanism 52. The second clamping mechanism 52, the saw disc structure 31, and the first clamping mechanism 51 are arranged sequentially along the conveying direction of the stainless steel pipe 8.

[0024] The cutting and blanking method for stainless steel pipes is as follows: Phase 1: As the stainless steel pipe 8 moves along its length toward the stainless steel pipe feeding mechanism 9, the moving trolley 2 moves in the same direction and at the same speed as the stainless steel pipe 8, such as... Figure 1 As shown, in Figure 1In the process, the stainless steel pipe 8 moves from right to left. The first clamping mechanism 51 and the second clamping mechanism 52 on the moving trolley 2 clamp the front and rear sides of the part of the stainless steel pipe 8 to be cut, respectively. The saw disc structure 31 on the moving trolley 2 cuts the stainless steel pipe 8 from top to bottom under the drive of the lifting mechanism. During this process, the feeding end of the moving trolley 2 limits the stainless steel pipe 8 and prevents its front end from sagging through the upper roller 43 and lower roller 42 of the stainless steel pipe limiting structure 4.

[0025] Phase Two: The saw disc structure 31 cuts the front section of the stainless steel pipe 8 to form a stainless steel pipe segment 80. The stainless steel pipe segment 80 and the stainless steel pipe 8 continue to move synchronously until the front and middle sections of the stainless steel pipe segment 80 move above the conveying mechanism 91 (i.e., the active conveying roller) of the stainless steel pipe unloading mechanism 9. Figure 2 As shown.

[0026] In stage three, the first clamping mechanism 51 of the stainless steel pipe clamping mechanism 5 releases the rear end of the stainless steel pipe segment 80, allowing the stainless steel pipe segment 80 to fall onto the conveying mechanism 91, as shown below. Figure 3 As shown. The conveying speed of the conveying mechanism 91 for the stainless steel pipe segment 80 is greater than the moving speed of the stainless steel pipe 8. The conveying mechanism 91 moves the stainless steel pipe segment 80 forward at a faster speed, so that the rear end of the stainless steel pipe segment 80 is separated from the front end of the stainless steel pipe 8.

[0027] Phase Four: The second clamping mechanism 52 also releases the stainless steel pipe 8, and the saw disc structure 31 is lifted upwards by the lifting mechanism, while the moving trolley 2 moves in the opposite direction (to the right) and resets, preparing the saw disc structure 31 for the next cut, as shown below. Figure 4 As shown. Throughout the entire production process, the stainless steel pipe 8 is conveyed forward at a fixed speed.

[0028] When the stainless steel pipe segment 80 to be cut is long, if the suspended front end of the stainless steel pipe 8 droops, as it passes the anti-droop support structure 7, the front end of the stainless steel pipe 8 is guided and supported by the anti-droop support structure 7 behind the discharge end of the moving trolley 2, ensuring that the front end of the stainless steel pipe 8 can move above the conveying mechanism 91 of the unloading mechanism 9. Specifically, the inclined guide groove 71 in the anti-droop support structure 7 can guide the front end of the stainless steel pipe 8, causing it to return to a horizontal state and fall onto the support roller 72, ensuring that the front end of the stainless steel pipe 8 can move above the conveying mechanism 91 of the stainless steel pipe unloading mechanism 9, and preventing the stainless steel pipe segment 80 from accidentally falling off the conveyor line when it is cut.

[0029] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A method for cutting and blanking stainless steel pipes, characterized in that, As the stainless steel pipe (8) moves along its own length toward the stainless steel pipe feeding mechanism (9), the moving trolley (2) moves in the same direction and at the same speed as the stainless steel pipe (8). The stainless steel pipe clamping mechanism (5) on the moving trolley (2) clamps the front and rear sides of the part to be cut on the stainless steel pipe (8). The saw disc structure (31) on the moving trolley (2) cuts the stainless steel pipe (8). The feeding end of the moving trolley (2) limits the stainless steel pipe (8) through the stainless steel pipe limiting structure (4) and prevents its front end from drooping. When the saw blade structure (31) cuts the front section of the stainless steel pipe (8) to form a stainless steel pipe segment (80), and the front and middle sections of the stainless steel pipe segment (80) have moved to the top of the conveying mechanism (91) of the stainless steel pipe unloading mechanism (9), the stainless steel pipe clamping mechanism (5) releases the rear end of the stainless steel pipe segment (80) so that the stainless steel pipe segment (80) falls on the conveying mechanism (91), while the moving trolley (2) moves in the opposite direction and resets, so that the saw blade structure (31) is ready for the next cut.

2. The method for cutting and blanking stainless steel pipes according to claim 1, characterized in that, The conveying speed of the conveying mechanism (91) to the stainless steel pipe section (80) is greater than the moving speed of the stainless steel pipe (8).

3. A method for cutting and blanking stainless steel pipes according to claim 1 or 2, characterized in that, When the front end of the stainless steel pipe (8) droops during the movement, the front end of the stainless steel pipe (8) is guided and supported by the anti-droop support structure (7) behind the discharge end of the moving trolley (2), so as to ensure that the front end of the stainless steel pipe (8) can move to the top of the conveying mechanism (91) of the feeding mechanism (9).

4. The method for cutting and blanking stainless steel pipes according to claim 1, characterized in that, The stainless steel tube limiting structure (4) clamps the stainless steel tube (8) in the middle through the upper roller (43) and the lower roller (42).

Images