Clamping device for cutting of pipes

Abstract

The utility model discloses a kind of clamping devices for pipe cutting, including base, two clamping units sliding in base and first drive mechanism for driving clamping unit to move towards to hold pipe, the clamping unit is provided with several rollers for abutting with pipe, the clamping device further includes second drive mechanism for driving one of the rollers to rotate.The utility model simple structure, reasonable in design, staff will pipe directly into clamping unit along vertical direction, without the same axial feeding process as traditional chuck, compared with traditional axial feeding machine type, the length of equipment is reduced, reduce floor area and manufacturing cost, at the same time, the second drive mechanism drives the rotation of the roller on clamping unit to drive pipe to rotate, without rotating driving component such as spindle box integrated motor, speed reducer and encoder, simplify system structure, and reduce failure rate, and it is convenient for staff to disassemble and repair.

Description

Technical Field

[0001] This utility model relates to the technical field of clamping devices, specifically a clamping device for pipe cutting. Background Technology

[0002] A pipe clamping device is a mechanical device specifically designed to fix pipes during the cutting process. The main function of the pipe clamping device is to ensure that the pipe remains stable during cutting and to prevent vibration, rotation or displacement from affecting the cutting accuracy and safety.

[0003] Chinese invention patent CN110860805A discloses a laser tube cutting machine and its control method with 3D beveling function. The spindle box and the front chuck are both mounted on the same linear guide rail on the main machine bed, which facilitates the concentricity of the spindle box and the front chuck. The spindle box and the front chuck are used to clamp the tube, so that the tube, the spindle box and the front chuck rotate synchronously. The spindle box clamping jaws hold the tube and move it along the X-axis of the linear guide rail. The rollers of the front chuck support the tube, so that the tube moves smoothly along the X-axis with the support of the rollers of the front chuck. At the same time, the front chuck can also move along the X-axis to avoid the laser cutting head when cutting the 3D beveling of the tube. The 3D laser cutting head is mounted on the base plate of the Z-axis upper and lower mechanism. By controlling the movement of the Z-axis upper and lower mechanism, the Z-axis upper and lower mechanism base plate and the 3D cutting head can move up and down.

[0004] The aforementioned laser tube cutting machine with 3D beveling function typically uses axial feeding when the operator transfers the tube to the spindle box and front chuck and clamps it radially. Axial feeding can easily lead to excessively long equipment, occupying a large space and increasing length costs. At the same time, the spindle box and front chuck drive the tube to rotate, and the spindle box and front chuck need to integrate components such as motors, reducers, and encoders for rotation drive, resulting in a complex structure. Utility Model Content

[0005] The purpose of this invention is to provide a clamping device for cutting pipe fittings, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A clamping device for cutting pipe fittings includes a base, two clamping units slidably disposed on the base, and a first driving mechanism for driving the clamping units to move toward each other to clamp the pipe fittings. The clamping units are provided with a plurality of rollers for abutting against the pipe fittings. The clamping device further includes a second driving mechanism for driving one of the rollers to rotate.

[0008] Preferably, each of the clamping units includes two clamping arms; or one clamping unit includes one clamping arm and the other clamping unit includes two clamping arms.

[0009] Preferably, each of the clamping arms has two rollers.

[0010] Preferably, the clamping unit further includes a support frame that slides with the base, and the clamping arm is fixed to the support frame.

[0011] Preferably, the first driving mechanism includes:

[0012] A bidirectional screw, wherein both ends of the bidirectional screw are threaded through the bottom of two support frames respectively;

[0013] The first motor is fixed to the base, and the output shaft of the first motor is coaxially connected to the end of the bidirectional screw.

[0014] Preferably, the second drive mechanism includes a second motor and a reduction mechanism disposed in the clamping unit, the reduction mechanism being connected to the roller.

[0015] Preferably, it also includes a lifting device for raising the pipe fitting, the lifting device including a support block for supporting the pipe fitting and a third drive mechanism for driving the support block to rise and fall.

[0016] Preferably, the lifting device further includes a lifting plate that supports the support block, and the output head of the third drive mechanism is fixed to the lifting plate.

[0017] Preferably, the lifting device further includes a guiding mechanism for guiding the support block to move up and down. The guiding mechanism includes a guide sleeve and a guide rod slidably disposed in the guide sleeve. The guide sleeve is fixed to the base, and the upper end of the guide rod is fixed to the lifting plate.

[0018] Preferably, the third drive mechanism includes a third motor or electric cylinder fixed to the base.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This pipe cutting clamping device includes a clamping unit, a first drive mechanism, rollers, and a second drive mechanism mounted on a base. The operator feeds the pipe directly into the clamping unit in a vertical direction, eliminating the traditional chuck axial feeding process. Compared with traditional axial feeding models, this design reduces the length of the equipment, significantly reducing the floor space and manufacturing cost. At the same time, the second drive mechanism drives the rollers on the clamping unit to rotate, thereby rotating the pipe. There is no need to integrate rotary drive components such as motors, reducers, and encoders into the spindle box, simplifying the system structure, reducing the failure rate, and facilitating disassembly and maintenance by the operator.

[0021] 2. The clamping device for cutting pipe fittings is equipped with a guiding mechanism. When the support block moves up and down in the set direction, the side wall of the guide rod is slidably connected to the guide sleeve, thereby guiding and limiting the support block, eliminating radial offset, and making the support block move up and down along the axial direction of the guide rod, thereby driving the pipe fitting to be lifted vertically without offset, thus improving the cutting accuracy of the pipe fitting during cutting. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a partial structural diagram of the present invention, mainly showing the clamping unit;

[0024] Figure 3 This is a partial structural diagram of the present invention, mainly showing the lifting mechanism;

[0025] Figure 4 This is a partial structural schematic diagram of the present invention, mainly showing the clamping arm in other embodiments.

[0026] In the diagram: 11. Base; 2. Clamping unit; 21. Clamping arm; 22. Support frame; 3. First drive mechanism; 31. Bidirectional screw; 32. First motor; 4. Roller; 5. Second drive mechanism; 51. Second motor; 52. Reduction mechanism; 6. Lifting device; 61. Support block; 62. Third drive mechanism; 63. Lifting plate; 64. Guide mechanism; 641. Guide sleeve; 642. Guide rod; 7. Support plate; 8. Support groove. Detailed Implementation

[0027] 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.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integrated connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0031] Please see Figure 1-4 As shown, this utility model provides a technical solution for a clamping device for pipe cutting:

[0032] A clamping device for cutting pipe fittings includes a base 11. Two clamping units 2, a first driving mechanism 3, several rollers 4, and a second driving mechanism 5 are mounted on the base 11. The two clamping units 2 are located on opposite sides of the base 11 and are slidably connected to it. Each clamping unit 2 includes a support frame 22 and two clamping arms 21. The bottom of the support frame 22 is slidably connected to the base 11. The two clamping arms 21 are located on the same side of the support frame 22 and are fixedly connected to it. Several rollers 4 are mounted on each clamping arm 21. Specifically, each clamping arm 21 has two rollers 4, which are distributed vertically. Each roller 4 is rotatably connected to the side wall of the clamping arm 21, and the other side of the roller 4 is used to abut against the side wall of the pipe fitting. The length of the pipe fitting is between 2400mm and 6700mm, and the diameter of the pipe fitting is between 300mm and 650mm.

[0033] In other embodiments, the clamping unit 2 located on one side of the base 11 includes one clamping arm 21, and the clamping unit 2 located on the other side of the base 11 includes two clamping arms 21. Each clamping arm 21 is equipped with two vertically distributed rollers 4, and one of the clamping arms 21 is equipped with a second drive mechanism 5 for driving the rollers 4 to rotate. The clamping arm 21 on one side of the pipe and the two clamping arms 21 on the other side of the pipe form a triangular clamping shape on the transverse plane, thereby improving the stability of the pipe when the clamping arms 21 clamp it.

[0034] The first drive mechanism 3 includes a first motor 32 and a bidirectional screw 31. The first motor 32 is fixedly connected to the base 11. The output shaft of the first motor 32 is coaxially fixedly connected to the end of the bidirectional screw 31. The two ends of the horizontally arranged bidirectional screw 31 are threaded through the bottom of the support frame 22.

[0035] The second drive mechanism 5 includes a second motor 51 and a reduction mechanism 52. The second motor 51 and the reduction mechanism 52 are connected. The output shaft of the reduction mechanism 52 is connected to one of the rollers 4, so that the roller 4 rotates with the second motor 51 and the reduction mechanism 52, thereby causing the pipe fitting that abuts against the roller 4 to rotate synchronously. This eliminates the need for the spindle box and front chuck to rotate to drive the pipe fitting to rotate synchronously, thus eliminating the need to integrate the motor, reducer and encoder on the spindle box or front chuck, simplifying the system structure, reducing the failure rate, and facilitating disassembly and maintenance by the staff.

[0036] Support plates 7 and lifting devices 6 for raising pipe fittings are installed on both sides of the base 11. The horizontally arranged support plates 7 are located on both sides of the base 11 and are fixedly connected to the base 11. The lifting device 6 includes a third drive mechanism 62, a lifting plate 63, and a support block 61. The third drive mechanism 62 includes a third motor or electric cylinder. Specifically, the electric cylinder has a thrust of 15KN, a stroke of 350mm, and a base plate thickness of 40mm, providing sufficient load-bearing strength and rigidity. The third drive mechanism 62 is fixedly connected to the base 11, and the output end of the third drive mechanism 62 passes through the support plate 7 and is fixedly connected to the bottom of the lifting plate 63. The top of the horizontally positioned lifting plate 63 is fixedly connected to the bottom of the support block 61. Each lifting plate 63 has two support blocks 61, and the top of each support block 61 is provided with a support groove 8 that abuts against the pipe fitting. The support groove 8 is inclined, so that the two support blocks 61 on the same lifting plate 63 are V-shaped, and the center distance between the support blocks 61 on both sides of the pipe fitting is 2140mm. Nylon abutment parts are installed on the support blocks 61. Each support plate 7 is equipped with a guide mechanism 64 for guiding the support block 61 to move up and down. There are two guide mechanisms 64, which are located on both sides of the third drive mechanism 62. Each guide mechanism 64 includes a guide sleeve 641 and a guide rod 642. The top of the vertically positioned guide sleeve 641 is fixedly connected to the bottom of the support plate 7, and the top of the vertically positioned guide rod 642 is fixedly connected to the bottom of the lifting plate 63. The bottom of the guide rod 642 passes through the guide sleeve 641 and is slidably connected to the inner wall of the guide sleeve 641.

[0037] The operator activates the third drive mechanism 62. The output shaft of the third drive mechanism 62 drives the lifting plate 63 and the support block 61 to rise and fall. Through the guide rod 642 and the guide sleeve 641, the lifting plate 63 rises and falls vertically, which in turn drives the support plate 7 to rise and fall vertically, thus causing the pipe to rise and fall vertically. When the pipe is transported to the set height, the operator activates the first motor 32. The output shaft of the first motor 32 rotates, which drives the bidirectional screw 31 to rotate synchronously, thereby driving the support frames 22 on both sides of the base 11 to move closer to each other, which in turn drives the clamping arms 21 on both sides of the pipe to move synchronously until the rollers 4 on the clamping arms 21 abut against the side wall of the pipe, thereby clamping and limiting the pipe. When the pipe is to be cut, the operator activates the second drive mechanism 5. Through the second motor 51 and the reduction mechanism 52, the rollers 4 rotate, which drives the pipe to rotate synchronously, facilitating the cutting of the pipe.

[0038] The working principle of this utility model is as follows:

[0039] In this embodiment, when using a pipe cutting clamping device, the operator vertically transports the pipe to the top of the base 11. Then, the operator activates the third drive mechanism 62, causing the lifting plate 63 and support block 61 to move upwards. Guided by the guide mechanism 64, the lifting plate 63 and support block 61 move vertically until the top of the support block 61 contacts the pipe. The operator then activates the third drive mechanism 62 again, causing the lifting plate 63, support block 61, and pipe to move vertically downwards until the pipe is transported to a set height. At this point, the operator activates the first drive mechanism 3, causing the output shaft of the first motor 32 to rotate, which in turn drives the bidirectional screw 31 to rotate synchronously. Since the bottoms of the two support frames 22 are threadedly connected to the bidirectional screw 31, the two support frames 22 move towards each other, thereby driving the clamping arm 21 to move synchronously until the roller 4 on the clamping arm 21 contacts the pipe, thus clamping and limiting the pipe and improving its stability. The operator then adjusts the third drive mechanism 62 to disengage the support block 61 from the pipe. After the pipe fitting is clamped and limited by the clamping arm 21, the operator activates the second drive mechanism 5 to facilitate cutting and other processing of the pipe fitting. Through the second motor 51 and the reduction mechanism 52, the roller 4 rotates, thereby driving the pipe fitting to rotate synchronously, eliminating the need for a spindle box and chuck to clamp the pipe fitting. On one hand, the pipe fitting is transported vertically instead of axially, reducing the equipment length and significantly lowering the footprint and manufacturing cost. On the other hand, the second drive mechanism 5 drives the roller 4 on the clamping unit 2 to rotate, thus rotating the pipe fitting. There is no need to integrate rotary drive components such as motors, reducers, and encoders into the spindle box and front chuck, simplifying the system structure, reducing the failure rate, and facilitating disassembly and maintenance. Furthermore, the lifting device 6 facilitates the transport of the pipe fitting to a set height, where the clamping arm 21 clamps the pipe fitting, and the guide mechanism 64 guides and limits the support block 61, ensuring that the support block 61 always drives the pipe fitting to rise and fall axially along the guide rod 642.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A clamping device for cutting pipe fittings, characterized in that: The device includes a base (11), two clamping units (2) slidably disposed on the base (11), and a first drive mechanism (3) for driving the clamping units (2) to move toward each other to clamp the pipe fitting. The clamping unit (2) is provided with a plurality of rollers (4) for abutting against the pipe fitting. The clamping device also includes a second drive mechanism (5) for driving one of the rollers (4) to rotate.

2. The clamping device for pipe cutting according to claim 1, characterized in that: Each of the clamping units (2) includes two clamping arms (21); or one clamping unit (2) includes one clamping arm (21) and the other clamping unit (2) includes two clamping arms (21).

3. The clamping device for pipe cutting according to claim 2, characterized in that: Each of the clamping arms (21) has two rollers (4).

4. The clamping device for pipe cutting according to claim 2, characterized in that: The clamping unit (2) further includes a support frame (22) that slides with the base (11), and the clamping arm (21) is fixed to the support frame (22).

5. A clamping device for pipe cutting according to claim 4, characterized in that: The first drive mechanism (3) includes: A bidirectional screw (31) is threaded through the bottom of two support frames (22) at both ends. The first motor (32) is fixed to the base (11), and the output shaft of the first motor (32) is coaxially connected to the end of the bidirectional screw (31).

6. The clamping device for pipe cutting according to claim 1, characterized in that: The second drive mechanism (5) includes a second motor (51) and a reduction mechanism (52) disposed in the clamping unit (2), the reduction mechanism (52) being connected to the roller (4).

7. The clamping device for pipe cutting according to claim 1, characterized in that: It also includes a lifting device (6) for raising the pipe fitting, the lifting device (6) including a support block (61) for supporting the pipe fitting and a third drive mechanism (62) for driving the support block (61) to rise and fall.

8. A clamping device for pipe cutting according to claim 7, characterized in that: The lifting device (6) also includes a lifting plate (63) that carries the support block (61), and the output head of the third drive mechanism (62) is fixed to the lifting plate (63).

9. A clamping device for pipe cutting according to claim 8, characterized in that: The lifting device (6) further includes a guiding mechanism (64) for guiding the support block (61) to move up and down. The guiding mechanism (64) includes a guide sleeve (641) and a guide rod (642) slidably disposed in the guide sleeve (641). The guide sleeve (641) is fixed to the base (11), and the upper end of the guide rod (642) is fixed to the lifting plate (63).

10. A clamping device for cutting pipe fittings according to claim 7, characterized in that: The third drive mechanism (62) includes a third motor or electric cylinder fixed to the base (11).

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