Straight welded pipe cutting device

Abstract

The utility model discloses a longitudinal welded pipe cutting device, and relates to the field of welded pipe machining equipment. A cutting device for a longitudinal welded pipe comprises a support and further comprises two rows of conveying rollers which are symmetrically and rotationally connected to the support and distributed in a splayed shape. The driving roller is arranged at the upper position between the two rows of conveying rollers and is positioned at the feeding end of the support; the motor driving mechanism is used for driving the driving roller to rotate and is mounted on the support; the bracket is fixedly mounted on the support; when the cutting machine is controlled to fall down to cut the longitudinal welded pipe, the two sides of the position to be cut of the longitudinal welded pipe can be synchronously clamped and positioned, the stability of the longitudinal welded pipe in the cutting process is effectively guaranteed, the situation that the welded pipe shakes due to high-speed rotation of a cutting blade is avoided, the cutting face is smooth, subsequent processing procedures are reduced, and the production efficiency is improved. The production cost is reduced, and the cutting quality and the production efficiency are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of welded pipe processing equipment, specifically, it relates to a straight seam welded pipe cutting device. Background Technology

[0002] In modern industrial production, straight seam welded pipe is an important type of pipe widely used in many fields such as construction, machinery manufacturing, and petrochemicals. Cutting is an essential and crucial step in the production process of straight seam welded pipe.

[0003] Currently, there are various types of straight seam welded pipe cutting devices on the market. However, these existing cutting devices generally have certain technical defects. One of the more prominent problems is that when cutting straight seam welded pipes, the high-speed rotation of the cutting disc of the cutting machine generates a large force, which makes the straight seam welded pipes prone to shaking. This shaking directly leads to an uneven cutting surface, making it difficult to effectively guarantee cutting accuracy.

[0004] In order to ensure that the cut straight seam welded pipes meet the requirements of subsequent production and use, it is often necessary to perform corresponding processing procedures such as grinding and trimming on the uneven cut surface. These additional processing procedures not only increase production time and labor costs, but also reduce production efficiency, which to some extent affects the economic benefits and market competitiveness of enterprises. Therefore, this utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a straight seam welded pipe cutting device that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: a straight seam welded pipe cutting device, including a support, and further including: two rows of conveying rollers, symmetrically rotatably connected to the support and arranged in a figure-eight pattern; a drive roller, located above the two rows of conveying rollers and at the feeding end of the support; a motor drive mechanism for driving the drive roller to rotate, mounted on the support; a bracket, fixedly mounted on the support; an electric telescopic rod, vertically fixedly connected to the bracket; a mounting frame plate, fixedly connected to the telescopic end of the electric telescopic rod; a cutting machine, fixedly mounted on the mounting frame plate; a mounting bracket, symmetrically arranged on both sides below the cutting machine; a positioning plate, symmetrically fixedly connected to the mounting bracket; and a pneumatic drive mechanism for controlling the movement of the mounting bracket, mounted on the bracket.

[0007] Furthermore, the motor drive mechanism includes a support frame, a mounting block, a drive motor, and a drive shaft. The support frame is symmetrically and fixedly connected to the support. The mounting block is connected to the support frame. The drive shaft is rotatably connected between the two mounting blocks. The drive roller is fixedly connected to the drive shaft. The drive motor is fixedly connected to one of the mounting blocks, and its output end is fixedly connected to the end of the drive shaft.

[0008] To ensure a tight fit between the drive roller and the straight seam welded pipe, and to accommodate straight seam welded pipes of different sizes, the mounting block is slidably connected to the support frame, and a tension spring is fixedly connected to the lower side of the support frame, with the upper end of the tension spring fixedly connected to the bottom of the mounting block.

[0009] To ensure relative balance on both sides of the drive roller and prevent tilting, a counterweight is fixedly connected to the mounting block away from the drive motor. The mass of the counterweight is the same as that of the drive motor.

[0010] Furthermore, the pneumatic drive mechanism includes a first air cylinder, a first piston rod with a piston, an air pipe, a second air cylinder, a second piston rod with a piston, and an elastic pull rope. The first air cylinder is symmetrically fixedly connected to both sides of the bracket via support plates. The first piston rod is slidably connected inside the first air cylinder. One end of the first piston rod extending out of the first air cylinder is fixedly connected to the mounting frame plate. The second air cylinder is symmetrically fixedly connected to the lower ends of both sides of the bracket. The second piston rod is slidably connected inside the second air cylinder. One end of the second piston rod extending out of the second air cylinder is fixedly connected to an adjacent mounting bracket. The elastic pull rope is disposed inside the second air cylinder, and its two ends are fixedly connected to the second air cylinder and the second piston rod, respectively. The first air cylinder and the second air cylinder are connected through an air pipe.

[0011] To facilitate increasing the contact area between the positioning plate and the straight seam welded pipe and further improve the positioning stability of the straight seam welded pipe, the positioning plate is further defined as an arc-shaped plate, with an elastic rubber block fixedly connected to one side of the positioning plate located on the concave surface.

[0012] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention, through the combined use of pneumatic drive mechanism, mounting frame and positioning plate and other components, can simultaneously clamp and position both sides of the straight seam welded pipe to be cut when controlling the cutting machine to fall to cut the straight seam welded pipe, effectively ensuring the stability of the straight seam welded pipe during the cutting process, avoiding the pipe shaking caused by the high-speed rotation of the cutting blade, making the cut surface flat, reducing subsequent processing steps, reducing production costs, and improving cutting quality and production efficiency.

[0013] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the internal structure of the second air cylinder of this utility model.

[0018] In the diagram: 1. Support; 101. Conveying roller; 102. Drive roller; 2. Support frame; 201. Mounting block; 202. Drive shaft; 203. Drive motor; 204. Tension spring; 205. Counterweight; 3. Bracket; 301. Electric telescopic rod; 302. Mounting frame plate; 303. Cutting machine; 304. First air cylinder; 305. First piston rod; 306. Air pipe; 307. Second air cylinder; 308. Second piston rod; 309. Elastic rope; 3010. Mounting bracket; 3011. Positioning plate; 3012. Elastic rubber block. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0020] Example 1:

[0021] Reference Figures 1-3 A straight seam welded pipe cutting device includes a support 1, and further includes: two rows of conveying rollers 101, symmetrically rotatably connected to the support 1 and arranged in a figure-eight pattern; a drive roller 102, positioned above the two rows of conveying rollers 101 and located at the feeding end of the support 1; a motor drive mechanism for driving the drive roller 102 to rotate, mounted on the support 1; a bracket 3, fixedly mounted on the support 1; an electric telescopic rod 301, vertically fixedly connected to the bracket 3; a mounting frame plate 302, fixedly connected to the telescopic end of the electric telescopic rod 301; a cutting machine 303, fixedly mounted on the mounting frame plate 302; a mounting frame 3010, symmetrically arranged on both sides below the cutting machine 303; a positioning plate 3011, symmetrically fixedly connected to the mounting frame 3010; and a pneumatic drive mechanism for controlling the movement of the mounting frame 3010, mounted on the bracket 3.

[0022] The motor drive mechanism includes a support frame 2, a mounting block 201, a drive motor 203, and a drive shaft 202. The support frame 2 is symmetrically fixedly connected to the support 1. The mounting block 201 is connected to the support frame 2. The drive shaft 202 is rotatably connected between the two mounting blocks 201. The drive roller 102 is fixedly connected to the drive shaft 202. The drive motor 203 is fixedly connected to one of the mounting blocks 201, and its output end is fixedly connected to the end of the drive shaft 202.

[0023] The pneumatic drive mechanism includes a first air cylinder 304, a first piston rod 305 with a piston, an air pipe 306, a second air cylinder 307, a second piston rod 308 with a piston, and an elastic pull rope 309. The first air cylinder 304 is symmetrically fixedly connected to both sides of the bracket 3 via support plates. The first piston rod 305 is slidably connected inside the first air cylinder 304. One end of the first piston rod 305 extending out of the first air cylinder 304 is fixedly connected to the mounting frame plate 302. The second air cylinder 307 is symmetrically fixedly connected to the lower ends of both sides of the bracket 3. The second piston rod 308 is slidably connected inside the second air cylinder 307. One end of the second piston rod 308 extending out of the second air cylinder 307 is fixedly connected to the adjacent mounting bracket 3010. The elastic pull rope 309 is disposed inside the second air cylinder 307, and its two ends are fixedly connected to the second air cylinder 307 and the second piston rod 308, respectively. The first air cylinder 304 and the second air cylinder 307 are connected by the air pipe 306.

[0024] When it is necessary to cut a long straight seam welded pipe into several sections, the worker can place the straight seam welded pipe on two rows of conveying rollers 101 arranged in a figure-eight pattern, and then start the drive motor 203 in the motor drive mechanism. The drive motor 203 drives the drive shaft 202 to rotate, which in turn drives the drive rollers 102 to rotate. Under the combined action of the drive rollers 102 and the conveying rollers 101, the straight seam welded pipe will be conveyed forward.

[0025] When the straight seam welded pipe is transported to the position to be cut directly below the cutting blade of the cutting machine 303, the electric telescopic rod 301 can be activated. The telescopic end of the electric telescopic rod 301 drives the mounting frame plate 302 and the cutting machine 303 on it to fall. During the process of the mounting frame plate 302 moving down, it will drive the first piston rod 305 to slide down in the first air cylinder 304, and transport the gas in the first air cylinder 304 into the second air cylinder 307 through the air pipe 306.

[0026] As gas enters the second gas cylinder 307, the second piston rod 308 is subjected to gas pressure to overcome the tension of the elastic rope 309, and drives the positioning plate 3011 to move closer to the straight seam welded pipe through the mounting bracket 3010, thereby clamping and positioning both sides of the straight seam welded pipe at the position to be cut.

[0027] After the positioning plate 3011 securely clamps the straight seam welded pipe, the cutting machine 303 is controlled to move downward and then started. The cutting blade of the cutting machine 303 will cut the straight seam welded pipe at high speed.

[0028] After cutting, the electric telescopic rod 301 retracts, causing the mounting frame plate 302 to rise and reset. The first piston rod 305 moves upward inside the first air cylinder 304, and the gas in the second air cylinder 307 flows back to the first air cylinder 304 through the air pipe 306. Under the action of the elastic pull rope 309, the second piston rod 308 drives the mounting frame 3010 and the positioning plate 3011 to reset. The straight seam welded pipe continues to be transported, ready for the next cutting operation.

[0029] This straight seam welded pipe cutting device, through a unique pneumatic drive mechanism, can simultaneously clamp and position both sides of the straight seam welded pipe at the cutting position while controlling the cutting machine 303 to fall and cut the pipe. This effectively ensures the stability of the straight seam welded pipe during the cutting process, avoids the pipe shaking caused by the high-speed rotation of the cutting blade, makes the cut surface flat, reduces subsequent processing steps, lowers production costs, and improves cutting quality and production efficiency.

[0030] Example 2:

[0031] Reference Figures 1-3 A straight seam welded pipe cutting device is basically the same as that in Embodiment 1, but with a further improvement: the mounting block 201 is slidably connected to the support frame 2, and a tension spring 204 is fixedly connected to the lower side of the support frame 2. The upper end of the tension spring 204 is fixedly connected to the bottom of the mounting block 201. By setting the tension spring 204, the height of the drive roller 102 can be flexibly adjusted according to the diameter of the straight seam welded pipe. This not only ensures that the drive roller 102 is in close contact with the straight seam welded pipe, but also makes it suitable for straight seam welded pipes of different sizes, effectively improving the applicability of the device.

[0032] A counterweight 205 is fixedly connected to the mounting block 201 away from the drive motor 203. The mass of the counterweight 205 is the same as that of the drive motor 203. By setting the counterweight 205, the two mounting blocks 201 can be made to have the same mass, so that the two sides of the drive roller 102 are relatively balanced and the tilting problem is avoided, so that the drive roller 102 can smoothly drive the straight seam welded pipe to move.

[0033] Example 3:

[0034] Reference Figures 1-3 A straight seam welded pipe cutting device is basically the same as that in Embodiment 2, but further: the positioning plate 3011 is an arc-shaped plate, and an elastic rubber block 3012 is fixedly connected to one side of the concave surface of the positioning plate 3011.

[0035] By designing the positioning plate 3011 in an arc shape and setting an elastic rubber block 3012 on the concave surface of the positioning plate 3011, when the positioning plate 3011 approaches the straight seam welded pipe to clamp and fix it, the elastic rubber block 3012 can deform according to the curvature of the straight seam welded pipe when it is in contact with the pipe, thereby increasing the contact area with the pipe and further improving the positioning stability of the pipe.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model.

Claims

1. A straight seam welded pipe cutting device, characterized in that, Including the support (1), it also includes: Two rows of conveyor rollers (101) are symmetrically rotated and connected to the support (1), and are distributed in a figure-eight shape; The drive roller (102) is positioned above the two rows of conveying rollers (101) and is located at the feeding end of the support (1); A motor drive mechanism for driving the drive roller (102) to rotate is mounted on the support (1); The bracket (3) is fixedly installed on the support (1); An electric telescopic rod (301) is vertically fixed to the bracket (3); Mounting frame plate (302) is fixedly connected to the telescopic end of the electric telescopic rod (301); A cutting machine (303) is fixedly installed on the mounting frame plate (302); Mounting brackets (3010) are symmetrically arranged on both sides below the cutting machine (303); Positioning plates (3011) are symmetrically fixedly connected to the mounting bracket (3010); A pneumatic drive mechanism for controlling the movement of the mounting bracket (3010) is mounted on the bracket (3).

2. The straight seam welded pipe cutting device according to claim 1, characterized in that, The motor drive mechanism includes a support frame (2), a mounting block (201), a drive motor (203), and a drive shaft (202). The support frame (2) is symmetrically fixedly connected to the support (1). The mounting block (201) is connected to the support frame (2). The drive shaft (202) is rotatably connected between two mounting blocks (201). The drive roller (102) is fixedly connected to the drive shaft (202). The drive motor (203) is fixedly connected to one of the mounting blocks (201), and its output end is fixedly connected to the end of the drive shaft (202).

3. The straight seam welded pipe cutting device according to claim 2, characterized in that, The mounting block (201) is slidably connected to the support frame (2), and a tension spring (204) is fixedly connected to the lower side of the support frame (2). The upper end of the tension spring (204) is fixedly connected to the bottom of the mounting block (201).

4. The straight seam welded pipe cutting device according to claim 3, characterized in that, A counterweight (205) is fixedly connected to a mounting block (201) away from the drive motor (203), and the mass of the counterweight (205) is the same as the mass of the drive motor (203).

5. A straight seam welded pipe cutting device according to claim 1, characterized in that, The pneumatic drive mechanism includes a first air cylinder (304), a first piston rod (305) with a piston, an air pipe (306), a second air cylinder (307), a second piston rod (308) with a piston, and an elastic pull rope (309). The first air cylinder (304) is symmetrically fixed to both sides of the bracket (3) via support plates. The first piston rod (305) is slidably connected inside the first air cylinder (304). One end of the first piston rod (305) extending out of the first air cylinder (304) is fixedly connected to the mounting frame plate (302). The second air cylinder (307) 307) Symmetrically fixedly connected to the lower ends of both sides of the bracket (3), the second piston rod (308) is slidably connected inside the second air cylinder (307), one end of the second piston rod (308) extending out of the second air cylinder (307) is fixedly connected to the adjacent mounting bracket (3010), the elastic pull rope (309) is set inside the second air cylinder (307), and both ends are fixedly connected to the second air cylinder (307) and the second piston rod (308) respectively, and the first air cylinder (304) and the second air cylinder (307) are connected through an air pipe (306).

6. The straight seam welded pipe cutting device according to claim 1, characterized in that, The positioning plate (3011) is an arc-shaped plate, and an elastic rubber block (3012) is fixedly connected to one side of the concave surface of the positioning plate (3011).

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