Stainless steel pipe cutting equipment with automatic feeding function

Abstract

The utility model discloses stainless steel pipe cutting equipment with an automatic feeding function, which belongs to the field of stainless steel pipe production and comprises a rotating device, a clamping device and a driving device. The rotating device can freely rotate around an axis in a space; the clamping device can be matched with and clamp a pipe fitting to be cut; the clamping device is fixedly connected with the rotating device and can drive the clamped pipe fitting to rotate along with the rotating device; the driving device is rotationally connected with the rotating device so as to provide driving force; the rotation device is composed of a plurality of same rotation units, and all the rotation units are coaxially arranged and can freely rotate around the same axis; the pipe fitting cutting device can automatically convey pipe fittings for cutting machining, and guarantees smooth and tidy cutting faces of laser cutting through the rotating mechanism.

Description

Technical Field

[0001] The utility model belongs to the field of stainless steel pipe production, and more specifically, relates to a stainless steel pipe cutting device with automatic feeding. Background Art

[0002] Laser cutting uses a high-energy laser beam emitted by a laser emitter. After irradiation, the material to be cut is melted and vaporized, and high-pressure gas is used to blow it away to form a cut seam to achieve the cutting of the material.

[0003] Currently, in the prior art, such as in a Chinese patent with the patent application number CN202410391854.0, a device for laser cutting stainless steel pipes is disclosed, which realizes the concentricity positioning of stainless steel pipes to ensure the accuracy of the cutting surface. However, in actual production, due to the change in the relative thickness formed by the superposition of the pipe walls in the vertical direction during translational cutting, the overall trend is to first thicken and then thin from the center of the pipe to both sides. When the laser beam performs translational cutting and cuts into a relatively thick area, the situation of incomplete melting and vaporization will occur. The liquid material that is not evaporated and blown away in time will condense and adhere to the cutting surface, resulting in the problem of uneven and rough cut seams in the relatively thick area of the cutting surface. Summary of the Utility Model

[0004] In view of the above problems, the utility model proposes a stainless steel pipe cutting device with automatic feeding. By utilizing the inherent characteristic of the constant wall thickness of the stainless steel pipe, the laser head is fixed, and the pipe fitting is rotated to keep the thickness of the laser beam cutting unchanged, so as to ensure that the cut is neat and uniform.

[0005] The stainless steel pipe cutting device with automatic feeding of the utility model includes

[0006] A slewing device that can freely rotate around an axis in space.

[0007] A clamping device that can match and clamp the pipe fitting to be cut. The clamping device is fixedly connected to the slewing device and can drive the clamped pipe fitting to rotate with the slewing device.

[0008] A driving device that is rotationally connected to the slewing device to provide driving force.

[0009] As a further improvement of the utility model, the slewing device is composed of a plurality of identical slewing units, and each slewing unit is arranged coaxially and can freely rotate around the same axis.

[0010] As a further improvement of the present utility model, a rotary unit of the rotary device includes a mounting frame, a rotary load-bearing ring, and a rotary gear ring. The mounting frame is a symmetrical part that penetrates through from front to back, with parallel upper and lower wall surfaces and arc-shaped side wall surfaces. The rear end of the mounting frame is fixedly connected to the rotary load-bearing ring, and the front end is fixedly connected to the rotary gear ring. The wheel surface of the rotary load-bearing ring is provided with an arc-shaped depression. The rotary gear ring is coaxial with the rotary load-bearing ring to perform a coaxial rotation motion.

[0011] As a further improvement of the present utility model, the clamping device includes a pair of roller wheels, which are vertically arranged in parallel inside the mounting frame and can rotate freely around the roller wheel shaft. The roller wheels are concave rolling mills, and the wheel surfaces are provided with an arc-shaped depression. A space is formed between a pair of roller wheels arranged in parallel to match and clamp the pipe fittings.

[0012] As a further improvement of the present utility model, the driving device includes a gear driving motor and a driving gear. The driving gear is sleeved and fixed on the motor shaft of the gear driving motor and meshes with the rotary gear ring to transmit the rotational power.

[0013] As a further improvement of the present utility model, it further includes a machine frame. A roller frame is provided in the middle of the rectangular bottom plate of the machine frame. The roller frame is composed of a cross beam at the bottom and vertical columns on both sides. Freely rotatable load-bearing wheels are symmetrically installed on the bottom cross beam of the roller frame, and freely rotatable auxiliary guiding wheels are installed on the inner sides of the tops of the vertical columns on both sides. The load-bearing wheels and the guiding wheels are fitted and engaged with the arc-shaped depression on the wheel surface of the rotary load-bearing ring to achieve non-slip rolling rotation.

[0014] As a further improvement of the present utility model, the rotary device is composed of two rotary units symmetrically installed. The two rotary units are fixedly connected by a connecting rod and installed on the machine frame.

[0015] As a further improvement of the present utility model, it further includes a pipe fitting conveying device. The pipe fitting conveying device includes a worm gear, a worm, and a roller driving motor. The center of the worm gear is fixedly connected to one end of the roller wheel shaft and meshes with the worm. The roller driving motor is fixedly connected to the motor shaft of the worm to drive the engaged worm gear and drive the roller wheel connected thereto to rotate. The roller wheel is driven to rotate to convey the clamped pipe fittings forward.

[0016] As a further improvement of the present utility model, it further includes a laser cutter. The laser cutter is installed at the front end of the machine frame, and its lower mounting frame is connected to the bottom plate of the machine frame. The laser emitting head above is located at the center of the upper cross beam.

[0017] As a further improvement of the present utility model, the center of the roller wheel is provided with a shaft hole and splines, and is sleeved in the middle of the roller wheel shaft with matching splines. Pressing rings that are threadedly engaged with the roller wheel shaft are installed on the upper and lower end surfaces of the roller wheel.

[0018] Compared with the existing technology, the beneficial effect of the utility model is that: while the equipment automatically feeds and transports pipe fittings, rotary cutting is used to utilize the uniform thickness of the round pipe wall, ensuring that the thickness of the pipe wall instantaneously cut by the laser beam remains consistent, and the material at the cut is completely melted and vaporized to achieve a smooth and neat cut surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the rack and mounting frame of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the worm gear transmission parts and the gear transmission parts of the utility model;

[0022] Figure 4 This is a schematic diagram of the improved utility model after the gear drive motor is added;

[0023] Figure 5 This is a schematic diagram of conventional translational laser cutting;

[0024] Figure 6 This is a schematic diagram of the rotary laser cutting of pipes in the utility model;

[0025] Description of the numbers in the figure:

[0026] 1. Rotating device; 2. Clamping device; 3. Driving device; 4. Pipe fitting; 5. Frame; 6. Pipe fitting transport device; 7. Laser cutter; 100. Rotating unit; 101. Mounting frame; 102. Rotating load-bearing ring; 103. Rotating gear ring; 104. Connecting rod; 201. Roller; 202. Roller shaft; 203. Pressing ring; 301. Gear drive motor; 302. Driving gear; 501. Load-bearing wheel; 502. Guide wheel; 601. Worm gear; 602. Worm; 603. Roller drive motor. DETAILED DESCRIPTION

[0027] Specific embodiment 1: Please refer to Figures 1 - 3 The accompanying figure shows an automatic feeding stainless steel pipe cutting device, which includes a rotating device 1, a clamping device 2 and a driving device 3.

[0028] The rotating device 1 is composed of two identical rotating units 100 .

[0029] One rotary unit 100 of the rotary device 1 includes a mounting frame 101, a rotary load-bearing ring 102, and a rotary gear ring 103. The mounting frame 101 is a symmetric part that penetrates through from front to back. The upper and lower wall surfaces are parallel and are provided with two pairs of vertically corresponding through holes, and the two side wall surfaces are arc-shaped. The rear end face of the mounting frame 101 is fixedly welded to the end face of the rotary load-bearing ring 102, and the front end face is fixedly welded to the end face of the rotary gear ring 103. A circular arc-shaped depression is formed on the wheel surface of the rotary load-bearing ring 102. The rotary gear ring 103 is welded to the rotary load-bearing ring 102 and is coaxial, and they can rotate coaxially.

[0030] The clamping device 2 includes a pair of roller wheels 201. The roller wheels 201 are concave rolling mills. A shaft hole is provided at the wheel center and splines are made. They are sleeved on the middle part of the roller shaft 202 with matching splines. Pressing rings 203 that are in threaded cooperation with the roller shaft 202 are installed on the upper and lower end faces of the roller wheels 201 for fixing the roller wheels 201. A circular arc-shaped depression is formed on the wheel surface. A circular space is formed between a pair of roller wheels 201 arranged side by side to match and clamp the pipe fitting 4. The roller wheels 201 are vertically and side by side installed inside the mounting frame 101, and both ends of the roller shaft 202 respectively pass through the through holes on the upper and lower wall surfaces of the mounting frame 101. The roller wheels 201 can freely rotate around the roller shaft 202 inside the mounting frame 101. The roller wheels 201 are installed in the central space formed by the mounting frame 101, located at the central position of the mounting frame 101, and are coaxial with the rotary load-bearing ring 102 and the rotary gear ring 103 welded to the front and rear end faces of the mounting frame 101.

[0031] The driving device 3 includes a gear driving motor 301 and a driving gear 302. The gear driving motor 301 is installed at the front end of the bottom plate of the machine frame (5). The driving gear 302 is sleeved and fixed on the motor shaft of the gear driving motor 301 and meshes with the rotary gear ring 103 to transmit rotational power.

[0032] The two rotary units 100 are arranged coaxially, are fixedly connected by connecting rods 104 welded to the upper and lower wall surfaces of their respective mounting frames 101, and are installed on the machine frame 5.

[0033] It further includes a machine frame 5. The machine frame 5 is composed of a rectangular bottom plate and a roller frame above. The roller frame is arranged in the middle of the bottom plate and is composed of a cross beam at the bottom and vertical columns on both sides. Freely rotatable load-bearing wheels 501 are symmetrically installed on the bottom cross beam of the roller frame, and freely rotatable auxiliary guiding wheels 502 are installed on the inner sides of the tops of the vertical columns on both sides. The load-bearing wheels 501 and the guiding wheels 502 are fitted and engaged with the circular arc-shaped depression on the wheel surface of the rotary load-bearing ring 102.

[0034] It further includes a pipe fitting conveying device 6. The pipe fitting conveying device 6 includes a worm gear 601, a worm 602 and a roller driving motor 603. The center of the wheel of the worm gear 601 is fixedly connected to one end of the roller shaft 202 and meshes with the worm 602. The roller driving motor 603 is fixedly connected to the motor shaft of the worm 602 to drive the meshing worm gear 601 and drive the roller 201 connected thereto to rotate. The roller 201 is driven to rotate to convey the clamped pipe fitting 4 forward.

[0035] It further includes a laser cutter 7. The laser cutter 7 is installed at the front end of the frame 5. The mounting frame below it is connected to the bottom plate of the frame, and the laser emitting head above is located at the center of the upper cross beam.

[0036] Working principle: When the conventional laser beam is translated vertically for cutting, as Figure 5 shown, the pipe fitting remains stationary and the laser emitting head is translated for cutting. The relative thicknesses of the vertical pipe walls stacked are different. When cutting to the relatively thick area, there will be a situation where the melting and vaporization are not complete. The liquid material that is not evaporated and blown away in time will condense and adhere to the cut surface, resulting in the problem of uneven and rough cut seams in the area with a relatively thick cut surface.

[0037] For an automatic feeding stainless steel pipe cutting device of the present utility model, during cutting, the position of the laser beam is fixed. As Figure 6 shown, the pipe fitting 4 is clamped and rotated by the mechanism to form a cut seam around the pipe body. The wall thickness of the rotating pipe fitting 4 instantaneously cut by the laser beam is consistent, ensuring that the pipe wall can be fully melted and vaporized and blown away by the high-pressure gas, ensuring that the cut surface of the laser cutting is smooth and neat.

[0038] During production, select and install the roller 201 with a concave shape matching the pipe fitting 4 to be processed, and feed the pipe fitting 4 to be cut from Figure 1 the end without the gear driving motor 301. The head end of the pipe fitting 4 is conveyed to the two juxtaposed rollers 201, passes through the circular space formed by the circular arcs of the centers of the two rollers 201 and is clamped. Turn on the two roller driving motors 603 to drive the worms 602 installed on the two mounting frames 101 to rotate respectively, thereby driving their respective worm gears 601 and the roller shafts 202 and rollers 201 connected below them to rotate. According to Figure 3Viewed from above the device, for the part on the left side without the gear-driven motor 301, the worm wheel 601 above rotates counterclockwise, and the worm wheel 601 below rotates clockwise, driving the respective lower roller 201 to rotate in the same direction. Under the action of friction, the pipe fitting 4 is conveyed from left to right to the mounting bracket 101 with the gear-driven motor 301 on the right side, passes through the part of the roller 201 mounted in parallel therein, and is continuously conveyed forward under the same rotational conveyance as on the left side. When the target cutting position of the pipe fitting 4 is directly below the laser emitting head of the laser cutter 7, the two roller drive motors 603 are turned off, and the gear-driven motor 301 is started. The gear-driven motor 301 drives the meshing rotary gear ring 103 to rotate through the drive gear 302, and the mounting bracket 101 welded to the rotary gear ring 103 and its upper mounting parts rotate together around the space axis passing through the center of the rotary bearing ring 102. And under the connection of the connecting rod 104, the mounting bracket 101 of the gearless drive motor 301 and its upper mounting parts also rotate. During rotation, the rotary bearing ring 102 makes a rolling friction movement with the two load-bearing wheels 501 under the limit of the guide wheel 502 on the roller frame of the machine frame 5 for rotation with the same relative position in space. The pipe fitting 4 clamped by the roller 201 is coaxial with the rotary bearing ring 102 and also makes a rotary movement with the same relative position in space for the laser beam to cut off.

[0039] Specific Embodiment 2: Please refer to Figure 4 , gear-driven motors 302 are arranged under the rotary gear rings 103 of the two mounting brackets 101, so that the mechanism obtains rotational driving forces both front and back, ensuring stable and synchronous rotation.

[0040] The above are only the preferred embodiments of the present utility model and are not intended to limit the purpose. All kinds of variations, modifications, and substitutions within the spirit and principle of this design are within the protection scope of the present utility model.

Claims

1. An automatic feeding stainless steel pipe cutting device, characterized in that: including a slewing device (1) that can freely rotate around an axis in space; a clamping device (2) that can match and clamp a pipe fitting (4) to be cut; the clamping device (2) is fixedly connected to the slewing device (1) and can drive the clamped pipe fitting (4) to rotate with the slewing device; a driving device (3) that is rotatably connected to the slewing device (1) to provide driving force.

2. The stainless steel pipe cutting equipment with automatic feeding according to claim 1, characterized in that: The slewing device (1) is composed of a plurality of identical slewing units (100), and each slewing unit (100) is arranged coaxially and can freely rotate around the same axis.

3. The automatic feeding stainless steel pipe cutting equipment according to claim 2, wherein: A slewing unit (100) of the slewing device (1) includes a mounting frame (101), a slewing load-bearing ring (102) and a slewing gear ring (103); the mounting frame (101) is a symmetric part that penetrates through from front to back, with parallel upper and lower wall surfaces and arc-shaped side wall surfaces; the rear end of the mounting frame (101) is fixedly connected to the slewing load-bearing ring (102), and the front end is fixedly connected to the slewing gear ring (103); a circular arc-shaped depression is formed on the wheel surface of the slewing load-bearing ring (102); the slewing gear ring (103) is coaxial with the slewing load-bearing ring (102) to perform a coaxial rotational motion.

4. An automatic feeding stainless steel pipe cutting device according to claim 3, characterized in that: The clamping device (2) includes a pair of roller wheels (201) that are vertically arranged in parallel inside the mounting frame (101) and can freely rotate around a roller shaft (202); the roller wheels (201) are concave rolling rollers, and a circular arc-shaped depression is formed on the wheel surface; a space is formed between the pair of roller wheels (201) arranged in parallel to match and clamp the pipe fitting (4).

5. The stainless steel pipe cutting equipment with automatic feeding according to claim 3, characterized in that: The driving device (3) includes a gear driving motor (301) and a driving gear (302); the gear driving motor (301) is installed below the front slewing gear ring (103); the driving gear (302) is sleeved and fixed on the motor shaft of the gear driving motor (301) and meshes with the slewing gear ring (103) to transmit rotational power.

6. An automatic feeding stainless steel pipe cutting device according to claim 3, characterized in that: It also includes a frame (5); a roller frame is provided in the middle of the rectangular bottom plate of the frame (5), and the roller frame is composed of a cross beam at the bottom and vertical columns on both sides; freely rotatable load-bearing wheels (501) are symmetrically installed on the bottom cross beam of the roller frame, and freely rotatable auxiliary guiding wheels (502) are installed on the inner sides of the tops of the columns on both sides; the load-bearing wheels (501) and the guiding wheels (502) are fitted into the circular arc-shaped depression on the wheel surface of the slewing load-bearing ring (102).

7. An automatic feeding stainless steel pipe cutting device according to claim 6, characterized in that: The slewing device (1) is symmetrically installed and composed of two slewing units (100), and the two slewing units are fixedly connected by a connecting rod (104) and installed on the frame (5).

8. An automatic feeding stainless steel pipe cutting device according to claim 7, characterized in that: It further includes a pipe fitting conveying device (6); the pipe fitting conveying device (6) includes a worm gear (601), a worm (602) and a roller driving motor (603); the center of the wheel of the worm gear (601) is fixedly connected to one end of a roller shaft (202) and meshes with the worm (602); the roller driving motor (603) is fixedly connected to the motor shaft of the worm (602) to drive the engaged worm gear (601) and drive the roller (201) connected thereto to rotate; the roller (201) is driven to rotate to forwardly convey the clamped pipe fitting (4).

9. An automatic feeding stainless steel pipe cutting device according to claim 8, characterized in that: It further includes a laser cutter (7); the laser cutter (7) is installed at the front end of the frame (5), and its lower mounting frame is connected to the bottom plate of the frame; the laser emitting head above is located at the center of the upper cross beam.

10. An automatic feeding stainless steel pipe cutting device according to claim 4, characterized in that: A shaft hole is formed in the center of the wheel of the roller (201) and splines are made, and the roller (201) is sleeved on the middle part of a roller shaft (202) with matching splines; press rings (203) that are in threaded fit with the roller shaft (202) are installed on the upper and lower end faces of the roller (201).

Images