Fixed-length cutting device for small-diameter steel pipe

Abstract

The utility model discloses a small-diameter steel pipe fixed-length cutting device which comprises a supporting platform, a discharging groove is formed in the table top of the supporting platform, a saw cutting support and a steel pipe clamping mechanism are installed on one side of the discharging groove, and a steel pipe limiting mechanism is installed on the other side of the discharging groove. A saw cutting platform is hinged to the saw cutting support, a saw cutting motor and a saw blade mounting seat are mounted at the top of the saw cutting platform and are in transmission connection through a belt, and a saw blade is further mounted on the saw blade mounting seat; a lifting air cylinder is hinged to the bottom of the sawing platform and connected with the supporting platform through a hinge seat fixed to the bottom of the supporting platform. The device is simple in structure, low in cost and convenient to use, the machining efficiency of the small-diameter steel pipe is improved, meanwhile, manual operation steps are reduced, the equipment operation stability is improved, and practicability is high.

Description

Technical Field

[0001] The utility model relates to a fixed-length cutting device for a small-diameter steel pipe, belonging to the technical field of cutting devices. Background Art

[0002] A cutting machine is a device that uses an electric motor as a power source to drive a cutting blade through a transmission device to run at high speed to cut various types of materials (such as steel, aluminum, plastic, wood, stone, etc.). According to the different cutting materials, cutting machines are divided into many types. Steel pipe cutting machine is one of them. It mainly cuts steel pipes to process them into different specifications. Common steel pipe cutting machines have a simple structure, and people cut steel pipes by controlling the cutting blade.

[0003] To this end, Chinese utility model patent CN202021218027.5 discloses a steel pipe cutting device, including several groups of clamping discs for clamping steel pipes and several cutting mechanisms for cutting steel pipes, and also includes a mounting plate for installing the clamping discs and cutting mechanisms, each group of clamping discs includes two clamping discs arranged opposite to each other, the cutting mechanism is arranged between the two clamping discs, and the mounting plate is also provided with a clamping motor for driving the clamping disc to rotate, a rotating shaft connected to the clamping motor, and a support for supporting the rotating shaft, the rotating shaft is rotatably connected to the support, and the rotating shaft is keyed to each group of clamping discs in turn. Although the problem of low processing efficiency caused by cutting in sections in the prior art is solved, due to the complexity of its feeding and clamping mechanism, manual auxiliary feeding is still required, and the automation level is low. In addition, the clamping mechanism relies on the deadweight of the clamping claw for clamping. When clamping a small diameter steel pipe, the cutting shaking amount is large, which is easy to cause quality accidents such as curling, collapse, and beveling, affecting the cutting yield of the steel pipe. Utility Model Content

[0004] The utility model aims to disclose a fixed-length cutting device for small-diameter steel pipes, so as to improve the automation level of the current fixed-length cutting device for steel pipes and ensure the yield rate of steel pipe cutting.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fixed-length cutting device for small-diameter steel pipes comprises a supporting platform, a material discharge trough is provided on the table top of the supporting platform, a sawing support and a steel pipe clamping mechanism are installed on one side of the material discharge trough, and a steel pipe limiting mechanism is installed on the other side; a sawing platform is hinged on the sawing support, a sawing motor and a saw blade mounting seat are installed on the top of the sawing platform, the sawing motor and the saw blade mounting seat are connected by belt drive, and a saw blade is also installed on the saw blade mounting seat; a lifting cylinder is hinged on the bottom of the sawing platform, and the lifting cylinder is connected to the supporting platform through a hinge seat fixed at the bottom of the supporting platform.

[0007] The steel pipe clamping mechanism includes a fixed clamping block and a movable clamping block symmetrically arranged along the center line of the support platform tabletop, and V-shaped clamping grooves are arranged on the opposite surfaces of the fixed clamping block and the movable clamping block; the bottom surface of the movable clamping block is slidably connected to the tabletop of the support platform, and the back surface is fixedly connected to a clamping cylinder installed on the tabletop of the support platform.

[0008] The steel pipe limiting mechanism includes a limiting baffle and a position sensor fixed on the tabletop of the support platform. The limiting baffle is located in the middle of the tabletop of the support platform, and the position sensors are located on the left and right sides of the limiting baffle.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] 1. The setting of the cylinder drive, combined with the PLC, realizes the automatic cutting function of the cutting machine, avoiding the unsafe factors existing in manual cutting;

[0011] 2. The setting of the clamping mechanism can clamp steel pipes of different sizes, preventing the steel pipe from moving when the cutting machine cuts the steel pipe, thereby improving the stability of the steel pipe on the machine frame when the cutting machine cuts the steel pipe. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the utility model.

[0013] Figure 2 is a schematic position diagram of the steel pipe clamping mechanism and the limiting mechanism of the utility model.

[0014] In the figure, 1 - support platform, 2 - blanking groove, 3 - sawing support, 4 - sawing platform, 5 - sawing motor, 6 - saw blade mounting seat, 7 - saw blade, 8 - lifting cylinder, 9 - hinge seat, 10 - fixed clamping block, 11 - movable clamping block, 12 - clamping cylinder, 13 - limiting baffle, 14 - position sensor, 15 - sliding groove, 16 - threaded sliding rod. Detailed Embodiments

[0015] The following further explains the utility model in conjunction with the drawings and specific embodiments.

[0016] As Figure 1-2 shown, the small-diameter steel pipe fixed-length cutting device of the utility model includes a support platform 1. A blanking groove 2 is opened on the tabletop of the support platform 1. A sawing support 3 and a steel pipe clamping mechanism are installed on one side of the blanking groove 2, and a steel pipe limiting mechanism is installed on the other side; a sawing platform 4 is hinged on the sawing support 3. A sawing motor 5 and a saw blade mounting seat 6 are installed on the top of the sawing platform 4. The sawing motor 5 and the saw blade mounting seat 6 are connected by a belt drive. A saw blade 7 is also installed on the saw blade mounting seat 6; a lifting cylinder 8 is hinged at the bottom of the sawing platform 4, and the lifting cylinder 8 is connected to the support platform 1 through a hinge seat 9 fixed at the bottom of the support platform 1.

[0017] The steel pipe clamping mechanism includes a fixed clamping block 10 and a movable clamping block 11 symmetrically arranged along the center line of the tabletop of the support platform 1, and V-shaped clamping grooves are arranged on the opposite surfaces of the fixed clamping block 10 and the movable clamping block 11; the bottom surface of the movable clamping block 11 is slidably connected to the tabletop of the support platform 1, and the back surface is fixedly connected to a clamping cylinder 12 installed on the tabletop of the support platform 1.

[0018] The steel pipe limiting mechanism includes a limiting baffle 13 and a position sensor 14 fixed on the tabletop of the support platform 1, and the limiting baffle 13 is located in the middle of the tabletop of the support platform 1, and the position sensors 14 are located on the left and right sides of the limiting baffle 13. The detection surface of the position sensor 14 coincides with the contact surface of the limiting baffle 13.

[0019] In addition, the small-diameter steel pipe fixed-length cutting device of the present utility model further includes a field PLC controller and a steel pipe conveying pipeline, and the field PLC controller is respectively signal-connected to the sawing motor 5, the lifting cylinder 8, the clamping cylinder 12, the position sensor 14 and the transmission motor of the steel pipe conveying pipeline.

[0020] The working process of the present utility model is as follows:

[0021] When the steel pipe conveying pipeline conveys the steel pipe to the support platform 1, the steel pipe passes through the middle of the fixed clamping block 10 and the movable clamping block 11 and continues to move forward along the center line of the tabletop of the support platform 1 until it abuts against the limiting baffle 13. At this time, the position sensor 14 senses the steel pipe and sends a steel pipe in-place signal to the field PLC controller. After receiving the signal, the field PLC controller promptly shuts down the steel pipe conveying pipeline, stops the steel pipe conveying, starts the clamping cylinder 12 to firmly clamp the steel pipe, and then starts the sawing motor 5 and the lifting cylinder 8. The lifting cylinder 8 drives the saw blade 7 to move downward to cut the steel pipe. After the steel pipe is completely cut, the cut steel pipe falls out from the blanking groove 2 and enters the next process; after the steel pipe falls out, the position sensor 14 does not detect the steel pipe, and feeds back a signal to the field PLC controller. The lifting cylinder 8 resets to drive the saw blade 7 to move upward away from the steel pipe, the clamping cylinder 12 resets to loosen the steel pipe, and the steel pipe conveying pipeline is started to continue conveying the steel pipe forward until the steel pipe abuts against the limiting baffle 13 again, and the above steps are repeated to complete the steel pipe cutting. It should be noted that the strokes of the lifting cylinder 8 and the clamping cylinder 12 can be determined through multiple on-site experimental adjustments according to the pipe diameter of the steel pipe to be clamped / cut. After the sawing motor 5 is started for the first time, it is shut down after the last cutting process is completed to avoid overheating of the motor due to frequent starting.

[0022] As a further improvement of the present utility model, in order to make the fixed-length cutting length of the steel pipe adjustable, a sliding groove 15 is also provided on the tabletop of the support platform 1. The sliding grooves 15 are respectively arranged on the left and right sides of the blanking groove 2. Threaded sliding rods 16 are fixedly connected to the left and right sides of the limit baffle 13. The threaded sliding rods 16 are slidably connected to the sliding grooves 15, and a set screw nut (not shown in the figure) is also screwed on the end of the threaded sliding rod 16 passing through the sliding groove 15. The limit baffle 13 can be fixed and moved through the set screw nut.

[0023] During use, first loosen the set screw nut. Taking the saw blade cutting position as the zero point and the position of the limit baffle 13 as the end point, move the limit baffle along the length direction of the sliding groove 15 to determine the fixed-length cutting size of the steel pipe. After determining, tighten the set screw nut to fix the limit baffle 13; then reinstall the position sensor 14 to ensure that the detection surface of the position sensor 14 coincides with the steel pipe contact surface of the limit baffle 13.

[0024] In summary, the fixed-length cutting device for small-diameter steel pipes of the present utility model not only solves the problem of unstable clamping of small-diameter steel pipes, but also improves the cutting efficiency of small-diameter steel pipes, reduces the manual operation steps, improves the operation stability of the equipment, and has strong practicability.

Claims

1. A fixed-length cutting device for small-diameter steel pipes, characterized in that: It includes a support platform (1). A blanking groove (2) is formed on the tabletop of the support platform (1). A sawing support (3) and a steel pipe clamping mechanism are installed on one side of the blanking groove (2), and a steel pipe limiting mechanism is installed on the other side. A sawing platform (4) is hinged on the sawing support (3). A sawing motor (5) and a saw blade mounting seat (6) are installed on the top of the sawing platform (4). The sawing motor (5) and the saw blade mounting seat (6) are connected by belt drive. A saw blade (7) is also installed on the saw blade mounting seat (6). A lifting cylinder (8) is hinged at the bottom of the sawing platform (4). The lifting cylinder (8) is connected to the support platform (1) through a hinge seat (9) fixed at the bottom of the support platform (1).

2. The fixed-length cutting device for small-diameter steel pipes according to claim 1, characterized in that: The steel pipe clamping mechanism includes a fixed clamping block (10) and a movable clamping block (11) symmetrically arranged along the center line of the tabletop of the support platform (1). V-shaped clamping grooves are arranged on the opposite surfaces of the fixed clamping block (10) and the movable clamping block (11). The bottom surface of the movable clamping block (11) is slidably connected to the tabletop of the support platform (1), and the back surface is fixedly connected to a clamping cylinder (12) installed on the tabletop of the support platform (1).

3. The fixed-length cutting device for small-diameter steel pipes according to claim 1, characterized in that: The steel pipe limiting mechanism includes a limiting baffle (13) and a position sensor (14) fixed on the tabletop of the support platform (1). The limiting baffle (13) is located in the middle of the tabletop of the support platform (1), and the position sensor (14) is located on the left and right sides of the limiting baffle (13).

4. The fixed-length cutting device for small-diameter steel pipes according to claim 3, characterized in that: The detection surface of the position sensor (14) coincides with the contact surface of the limiting baffle (13).

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