A waterjet cutting gun clamping drive for round pipes

Abstract

This utility model discloses a waterjet cutting gun clamping and driving device for circular pipes, belonging to the field of waterjet cutting technology. It includes a guide chain, a drive chain, and a moving mechanism. The moving mechanism includes a support plate and a power box. Several pairs of rollers and a pair of guide sprockets are installed on the lower part of the support plate. A cutting gun clamping mechanism is installed on the support plate, and a drive sprocket is rotatably mounted on the power box. The guide chain can wrap around the outside of the circular pipe and is secured by a chain clamping mechanism. The drive sprocket meshes with the outside of the guide chain. The drive chain can wrap around the outside of the circular pipe and the drive sprocket and is secured by the chain clamping mechanism. By guiding the guide sprocket with the guide chain, providing rolling support with the rollers, and engaging the drive chain with the drive sprocket, the moving mechanism can drive the waterjet cutting gun to move stably and accurately circumferentially around the outside of the circular pipe, ensuring waterjet cutting quality and efficiency. The chain clamping mechanism allows for flexible adaptation to circular pipes of different sizes.

Description

Technical Field

[0001] This utility model belongs to the field of waterjet cutting technology, specifically a waterjet cutting gun clamping and driving device for round pipes. Background Technology

[0002] Waterjet cutting, also known as water jet cutting, is a cutting technique that uses high-pressure water jets or high-pressure water jets combined with abrasives. It offers the following advantages: 1. Wide cutting range: It can cut most materials, such as metals, marble, and glass. 2. High cutting quality: Smooth cuts without rough, burr-like edges. 3. No heat processing: Because it uses water and abrasives, it generates little to no heat during processing. This is ideal for heat-affected materials, such as titanium. It is also suitable for special working environments, such as underground coal mines. 4. Environmentally friendly: Using water and abrasives, the abrasive does not produce toxic gases during processing and can be directly discharged, making it more environmentally friendly. 5. No need to change tools or cutting equipment: A single nozzle can process different types of materials and shapes, saving costs and time. 6. Flexible cutting: There are no restrictions on cutting direction, allowing for the creation of various cutting shapes.

[0003] Water jet cutting is gradually becoming the mainstream cutting method in industrial cutting technology.

[0004] When waterjet cutting large-diameter circular pipes (such as engineering steel pipes), traditional circumferential cutting positioning devices cannot be conveniently and reliably clamped onto the pipe, so cutting is usually done manually by hand with a waterjet cutting gun. However, manual hand-held cutting can cause many cutting quality problems, such as uneven cut surfaces and inaccurate cutting positions. Manual hand-held cutting also poses significant safety hazards and greatly affects the efficiency of waterjet cutting operations. Utility Model Content

[0005] To address the problems of uneven cut surfaces, inaccurate cutting positions, significant safety hazards, and low work efficiency associated with manual hand-held operation for waterjet cutting of large-diameter circular pipes, this utility model provides a waterjet cutting gun clamping and driving device for circular pipes.

[0006] This utility model is achieved through the following technical solution: A waterjet cutting gun clamping drive device for a circular pipe includes a guide chain, a drive chain, and a moving mechanism. The moving mechanism includes a support plate and a power box mounted on the support plate. Several pairs of rollers capable of rolling and supporting the outer surface of the circular pipe and a pair of guide sprockets are mounted on the lower part of the support plate. A cutting gun clamping mechanism capable of clamping and fixing the waterjet cutting gun is also mounted on the support plate. A drive sprocket is rotatably mounted on the power box. The guide chain can wrap around the outside of the circular pipe and be clamped and fixed by a chain snap-fit ​​mechanism. The drive sprocket meshes with the outside of the guide chain. The drive chain can wrap around the outside of the circular pipe and the drive sprocket and be clamped and fixed by a chain snap-fit ​​mechanism.

[0007] A further improvement of this utility model is that the chain clamping mechanism is a bolt clamp, which includes a first bolt clamp for clamping and fixing the guide chain and a second bolt clamp for clamping and fixing the drive chain.

[0008] A further improvement of this utility model is that the two sides of the chain clamping mechanism are respectively provided with a pair of first clamping plates and a pair of second clamping plates; the first clamping plate is provided with a positioning hole for fitting a pin at one end of the chain, and the end of the second clamping plate is provided with a claw that can engage with the corresponding pin on the chain.

[0009] A further improvement of this utility model is that a chain clearance hole is provided on the clamp head corresponding to the first clamping plate.

[0010] A further improvement of this utility model is that a number of support columns are positioned and installed on the support plate and are slidably inserted into the power box, and a support spring is fitted on the support column to support the support between the support plate and the power box, and a first nut is screwed onto the support column on the side of the power box away from the support plate.

[0011] A further improvement of this utility model is that a second nut is screwed onto one end of the support column near the support plate, which abuts against the support spring.

[0012] A further improvement of this utility model is that the cutting gun clamping mechanism adopts a quick-release clamp structure.

[0013] A further improvement of this utility model is that the support plate has several elongated adjustment holes, and mounting bolts are inserted into the adjustment holes. The frame of the roller and the frame of the guide sprocket are respectively connected and installed with the corresponding mounting bolts.

[0014] A further improvement of this utility model is that slots for avoiding the drive chain are provided on both sides of the middle part of the support plate.

[0015] A further improvement of this utility model is that a motor connected to the drive sprocket is installed inside the power box.

[0016] As can be seen from the above technical solutions, the beneficial effects of this utility model are: In operation, the guide chain wraps around the circular tube to be cut and is secured by a chain clamping mechanism. The moving mechanism is placed outside the circular tube, so that the two guide sprockets mesh with the outer side of the guide chain, and the rollers roll and support the outer circumference of the circular tube. The drive chain wraps around the drive sprocket and the corresponding position on the circular tube and is secured by another chain clamping mechanism, ensuring that the two chain clamping mechanisms are on the same side of the circular tube. The waterjet cutting gun is clamped and secured by the cutting gun clamping mechanism, so that the waterjet cutting gun nozzle is facing the center of the corresponding position on the circular tube. The power box drives the drive sprocket and starts the waterjet cutting system, starting as close to the chain as possible. Cutting begins on one side of the locking mechanism. Guided by a guide chain, two guide sprockets are positioned and supported by multiple pairs of rollers. The moving mechanism steadily moves circumferentially around the outside of the circular pipe through the engagement of the drive chain and drive sprockets. This continues until the cutting position reaches the other side near the chain locking mechanism. At this point, the waterjet cutting system's pressure supply and the drive sprocket's rotation are paused. The two chain locking mechanisms are then loosened, allowing the guide chain and drive chain to rotate slightly circumferentially. The two chain locking mechanisms are then locked, creating cutting space for the uncut portion. The waterjet cutting system is then restarted, and the drive sprocket continues to rotate, cutting the remaining portion. This device enables the waterjet cutting gun to move stably and precisely circumferentially around the outside of the circular pipe, effectively ensuring the quality and efficiency of waterjet cutting. It avoids problems such as uneven cut surfaces and inaccurate cutting positions caused by manual hand-held cutting, eliminating the safety hazards of manual hand-held cutting. Furthermore, the chain locking mechanism's secure fastening to the corresponding chain allows for flexible adaptation to circular pipes of different sizes, offering strong versatility. The overall structure is simple, easy to operate, and highly practical. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a first-view structural diagram of a specific embodiment of the present invention.

[0019] Figure 2 This is a second-view structural diagram of a specific embodiment of the present invention.

[0020] Figure 3 for Figure 2 A magnified schematic diagram of part B in the middle section.

[0021] Figure 4 This is a schematic diagram of the installation of the moving mechanism according to a specific embodiment of the present invention.

[0022] Figure 5 for Figure 2 A magnified schematic diagram of part A in the middle.

[0023] Figure 6 This is a schematic diagram of the head structure of the bolt cutters according to a specific embodiment of the present invention.

[0024] In the attached diagram: 100, round tube; 200, guide chain; 300, drive chain; 400, moving mechanism; 41, support plate; 411, adjusting hole; 412, mounting bolt; 42, power box; 43, drive sprocket; 44, support column; 441, support spring; 442, first nut; 443, second nut; 45, roller; 46, guide sprocket; 47, cutting gun clamping mechanism; 500, chain clamping mechanism; 51, first clamping clamp; 52, second clamping clamp; 501, first clamping plate; 502, positioning hole; 503, chain clearance hole; 504, second clamping plate; 505, chuck. Detailed Implementation

[0025] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0026] like Figure 1-6 As shown, this utility model discloses a waterjet cutting gun clamping drive device for round pipes, including an open-loop guide chain 200, an open-loop drive chain 300, and a moving mechanism 400. The moving mechanism 400 includes a rectangular support plate 41 and a power box 42 mounted on the upper side of the support plate 41. Several pairs of rollers 45 capable of rolling and supporting the outer surface of the round pipe 100 (with the axis of rotation in the front-rear direction) and a pair of guide sprockets 46 are positioned and mounted on the lower part of the support plate 41. The axis of rotation of the rollers 45 and the guide sprockets 46 is consistent with the axis of rotation of the round pipe 100. In use, the pairs of rollers 45 and guide sprockets 46 are positioned opposite each other. The support plate 41 is symmetrically arranged on the plane where the axis of the circular tube 100 is located. A cutting gun clamping mechanism 47 for clamping and fixing the waterjet cutting gun is also positioned and installed at the front end of the support plate 41. A drive sprocket 43 is rotatably installed on the power box 42. The drive sprocket 43 is in the same direction as the axis of the circular tube 100 (front and back direction). The guide chain 200 can wrap around the outside of the circular tube 100 (circumferential direction) and is clamped and fixed by the chain snap-fit ​​mechanism 500. The drive sprocket 43 meshes with the outside of the guide chain 200. The drive chain 300 can wrap around the outside of the circular tube 100 and the drive sprocket 43 and is clamped and fixed by the chain snap-fit ​​mechanism 500.

[0027] When using, such as Figure 1-5 As shown, the guide chain 200 wraps around the circular tube 100 to be cut and is secured by a chain clamping mechanism 500. The moving mechanism 400 is placed outside the circular tube 100, so that the two guide sprockets 46 mesh with the outer side of the guide chain 200, and the rollers 45 roll and support the outer circumference of the circular tube 100. The drive chain 300 wraps around the drive sprocket 43 and the corresponding position of the circular tube 100 and is secured by another chain clamping mechanism 500, so that the two chain clamping mechanisms 500 are on the same side of the circular tube 100. The waterjet cutting gun is clamped and secured by the cutting gun clamping mechanism 47, so that the waterjet cutting gun nozzle is facing the center of the corresponding position of the circular tube 100. The control power box 42 drives the drive sprocket 43 and starts the waterjet cutting system, starting the cutting as close as possible to the side of the chain clamping mechanism 500. The guide chain 200 guides the two guide sprockets 46, and multiple pairs of rollers 45 provide rolling support. Through the circumferential engagement of the drive chain 300 and the drive sprocket 43, the moving mechanism 400 can steadily move circumferentially on the outside of the round tube 100 until the cutting position reaches the other side near the chain locking mechanism 500. At this point, the water cutting system's pressure supply and the rotation drive of the drive sprocket 43 are paused. The two chain locking mechanisms 500 are loosened, allowing the guide chain 200 and drive chain 300 to rotate circumferentially by a small angle. The two chain locking mechanisms 500 are then locked (the loosening and locking operations of the two chain locking mechanisms 500 are preferably performed asynchronously to ensure adjustment accuracy), leaving cutting space for the uncut part. The water cutting system is then restarted, and the drive sprocket 43 is controlled to continue rotating to cut the remaining part. This device can drive the waterjet cutting gun to move stably and accurately around the outer circumference of the circular pipe 100, effectively ensuring the quality and efficiency of waterjet cutting, avoiding problems such as uneven cutting surfaces and inaccurate cutting positions caused by manual hand cutting, and eliminating the safety hazards of manual hand cutting; in addition, through the chain clamping mechanism 500 and the corresponding chain clamping and fixing, it can be flexibly adapted to circular pipes of different sizes, with strong versatility; the overall structure is simple, easy to operate and use, and has good practicality.

[0028] The power box 42 houses a motor that is connected to the drive sprocket 43. The motor is a servo motor, which can precisely control the speed and direction of rotation, ensuring the quality and stability of the waterjet cutting.

[0029] like Figure 1-4 As shown, slots are provided on both sides of the middle part of the support plate 41 to avoid interference with the drive chain 300. This ensures that the moving mechanism 400 will not interfere with the drive chain 300 during its movement, guaranteeing the stable operation of the entire clamping drive device. It also ensures that the waterjet cutting gun can cut around the circular tube 100 according to the predetermined trajectory, avoiding problems such as decreased cutting accuracy caused by the poor operation of the drive chain 300.

[0030] Furthermore, the drive chain 300 is located in the middle of the support plate 41, two guide sprockets 46 are located at the lower front end of the support plate 41, a pair of rollers 45 are located at the lower rear end of the support plate 41, and other rollers 45 are flexibly arranged according to the size of the support plate 41 and the support stability, so as to ensure the stable movement of the moving mechanism 400 on the outer circumference of the round tube 100 and ensure the safety and accuracy of the cutting.

[0031] like Figure 1-4 As shown, the cutting gun clamping mechanism 47 adopts a quick-release clamp structure. The cutting gun clamping mechanism 47 has two clamping blocks, with one end hinged to the middle and the other end quickly connected via a nut. The two clamping blocks interlock to form a clamping opening for holding and fixing the waterjet cutting gun, and a rubber protective layer is provided inside the clamping opening. This allows for reliable and stable clamping of the waterjet cutting gun and enables quick installation and removal, saving clamping and removal time, reducing operational difficulty, and improving operational convenience and work efficiency.

[0032] like Figure 3-4 As shown, the support plate 41 has several elongated adjustment holes 411 (the length direction is perpendicular to the axis of the round tube 100). Mounting bolts 412 pass through the adjustment holes 411. The frames of the rollers 45 and guide sprockets 46 are respectively connected to the corresponding mounting bolts 412 (they can be threaded or slidably fitted, with a tightening nut screwed onto the end of the mounting bolt 412). By loosening the mounting bolts 412, the distance between the pairs of rollers 45 and guide sprockets 46 can be flexibly adjusted, thus adapting flexibly to the cutting of round tubes 100 of different sizes, making it convenient and flexible to use.

[0033] The chain clamping mechanism 500 is a bolt clamp, comprising a first bolt clamp 51 for clamping and fixing the guide chain 200 and a second bolt clamp 52 for clamping and fixing the drive chain 300. The bolt clamp provides a large clamping force, ensuring that the guide chain 200 and the drive chain 300 are securely wrapped and fixed, preventing loosening or slippage. This guarantees the stability of the guide chain 200 as a positioning reference and the reliability of the drive chain 300 in transmitting power, thereby ensuring the normal operation of the waterjet gun clamping drive device and improving cutting accuracy and stability. Furthermore, the bolt clamp is relatively easy to operate; operators can quickly clamp or loosen the chain without specialized tools or complex procedures, facilitating installation and disassembly on round pipes of different specifications and improving work efficiency.

[0034] In a further embodiment, such as Figure 5-6As shown, the chain clamping mechanism 500 has a pair of first clamping plates 501 and a pair of second clamping plates 504 on each side of the clamping head. The first clamping plate 501 (on the fixed clamping head) has a positioning hole 502 for fitting with the pin at one end of the chain. The second clamping plate 504 (on the movable clamping head) has a claw 505 at its end that can engage with the corresponding pin on the chain. The claw 505 has a semi-circular opening facing the opposite clamping head. The two positioning holes 502 on the fixed clamping head of the pliers fit with the two ends of the pin at the end of the chain, and the two claws 505 on the movable clamping head engage with the corresponding ends of the pin on the chain, which can achieve reliable and convenient chain locking and fixing.

[0035] Furthermore, the clamping head corresponding to the first clamping plate 501 has a chain clearance hole 503 that allows the chain to pass through. Excess chain can pass through the chain clearance hole 503, avoiding interference between the clamping head and the chain, and facilitating the initial tightening of the chain, thus improving the convenience and flexibility of use.

[0036] like Figure 3-4 As shown, several support columns 44 are positioned and installed on the support plate 41, which are slidably inserted into the power box 42. Support springs 441 are fitted onto the support columns 44, supporting the space between the support plate 41 and the power box 42. A first nut 442 is screwed onto the end of the support column 44 away from the support plate 41 and press-fitted onto the side of the power box 42 away from the support plate 41. The support springs 441 act as buffers and dampers, reducing vibrations transmitted from the power box 42 to the support plate 41 and the entire device. This helps maintain the stability of the waterjet cutting gun mounted on the cutting gun clamping mechanism 47, thereby improving cutting quality and preventing uneven cutting surfaces or cutting position deviations caused by vibration, thus improving applicability. The first nut 442 allows for easy adjustment of the height of the power box 42 (drive sprocket 43) relative to the support plate 41, optimizing the meshing state between the drive sprocket 43 and the drive chain 300, ensuring smooth power transmission. Furthermore, the compression degree of the support springs 441 can be adjusted to change their buffering and damping force, allowing the device to better adapt to different working conditions. The first nut 442 is a wing nut. The design of the wing nut allows the operator to tighten or loosen it by hand without the need for additional tools, which facilitates the flexible adjustment of the position of the first nut 442 on the support column 44.

[0037] Furthermore, a second nut 443 is screwed onto one end of the support column 44 near the support plate 41, which abuts against the support spring 441. The second nut 443 can be used in conjunction with the first nut 442, and the preload of the support spring 441 can be adjusted more precisely by rotating it.

[0038] The support column 44 has a smooth rod in the middle section and threaded rods at both ends. The smooth rod section slides and guides the two threaded sections of the power box 42, which are respectively threadedly connected to the first nut 442 and the second nut 443.

[0039] This waterjet cutting gun clamping drive device for round pipes operates as follows: A guide chain 200 wraps around the round pipe 100 to be cut and is secured by a chain clamping mechanism 500. The moving mechanism 400 is placed outside the round pipe 100, so that two guide sprockets 46 mesh with the outer side of the guide chain 200, and rollers 45 roll and support the outer circumference of the round pipe 100. The drive chain 300 wraps around the drive sprocket 43 and the corresponding position on the round pipe 100 and is secured by another chain clamping mechanism 500, ensuring both chain clamping mechanisms 500 are on the same side of the round pipe 100. The waterjet cutting gun is clamped and secured by the cutting gun clamping mechanism 47, with the nozzle of the waterjet cutting gun facing the center of the corresponding position on the round pipe 100. The control power box 42 drives the drive sprocket 43 and activates the waterjet cutting system, starting as close as possible to the chain clamping mechanism. Cutting begins on one side of the tube 100. The guide chain 200 guides the two guide sprockets 46, while multiple pairs of rollers 45 provide rolling support. The drive chain 300 engages with the drive sprocket 43, allowing the moving mechanism 400 to steadily move circumferentially around the outside of the tube 100 until the cutting position reaches the other side near the chain locking mechanism 500. At this point, the waterjet cutting system's pressure supply and rotation drive of the drive sprocket 43 are paused. The two chain locking mechanisms 500 are loosened, allowing the guide chain 200 and drive chain 300 to rotate circumferentially by a small angle. The two chain locking mechanisms 500 are then locked (the loosening and locking operations of the two chain locking mechanisms 500 are preferably performed asynchronously to ensure adjustment accuracy), leaving cutting space for the uncut portion. The waterjet cutting system is then restarted, and the drive sprocket 43 continues to rotate, completing the cutting of the remaining portion. This device can drive the waterjet cutting gun to move stably and accurately around the outer circumference of the circular pipe 100, effectively ensuring the quality and efficiency of waterjet cutting, avoiding problems such as uneven cutting surfaces and inaccurate cutting positions caused by manual hand cutting, and eliminating the safety hazards of manual hand cutting; in addition, through the chain clamping mechanism 500 and the corresponding chain clamping and fixing, it can be flexibly adapted to circular pipes of different sizes, with strong versatility; the overall structure is simple, easy to operate and use, and has good practicality.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A waterjet cutting gun clamping and driving device for round pipes, characterized in that, The device includes a guide chain (200), a drive chain (300), and a moving mechanism (400). The moving mechanism (400) includes a support plate (41) and a power box (42) mounted on the support plate (41). The lower part of the support plate (41) is equipped with several pairs of rollers (45) that can roll and support the outer surface of the round tube (100) and a pair of guide sprockets (46). The support plate (41) is also equipped with a cutting gun clamping mechanism (47) that can clamp and fix the waterjet cutting gun. The power box (42) is rotatably mounted with a drive sprocket (43). The guide chain (200) can wrap around the outside of the round tube (100) and be clamped and fixed by a chain clamping mechanism (500). The drive sprocket (43) meshes with the outside of the guide chain (200). The drive chain (300) can wrap around the outside of the round tube (100) and the drive sprocket (43) and be clamped and fixed by a chain clamping mechanism (500).

2. The waterjet cutting gun clamping and driving device for round pipes according to claim 1, characterized in that, The chain clamping mechanism (500) is a bolt clamp, which includes a first bolt clamp (51) for clamping and fixing the guide chain (200) and a second bolt clamp (52) for clamping and fixing the drive chain (300).

3. The waterjet cutting gun clamping and driving device for circular pipes according to claim 2, characterized in that, The chain clamping mechanism (500) has a pair of first clamping plates (501) and a pair of second clamping plates (504) on the two sides of the clamping head. The first clamping plate (501) has a positioning hole (502) for fitting with the pin at one end of the chain, and the second clamping plate (504) has a claw (505) at the end that can clamp with the corresponding pin on the chain.

4. The waterjet cutting gun clamping and driving device for circular pipes according to claim 3, characterized in that, A chain clearance hole (503) is provided on the clamp head corresponding to the first clamping plate (501).

5. The waterjet cutting gun clamping and driving device for round pipes according to claim 1, characterized in that, A number of support columns (44) are positioned and installed on the support plate (41) and are slidably inserted into the power box (42). A support spring (441) is fitted on the support column (44) and supports the support plate (41) and the power box (42). A first nut (442) is screwed on the support column (44) and pressed onto the side of the power box (42) away from the support plate (41).

6. The waterjet cutting gun clamping and driving device for circular pipes according to claim 5, characterized in that, The end of the support column (44) near the support plate (41) is screwed with a second nut (443) that abuts against the support spring (441).

7. The waterjet cutting gun clamping and driving device for circular pipes according to claim 1, characterized in that, The cutting gun clamping mechanism (47) adopts a quick-release clamp structure.

8. The waterjet cutting gun clamping and driving device for circular pipes according to claim 1, characterized in that, The support plate (41) has several elongated adjustment holes (411), and mounting bolts (412) are inserted into the adjustment holes (411). The frame of the roller (45) and the frame of the guide sprocket (46) are respectively connected and installed with the corresponding mounting bolts (412).

9. The waterjet cutting gun clamping and driving device for circular pipes according to claim 1, characterized in that, The support plate (41) has slots on both sides of the middle section to allow the drive chain (300) to pass.

10. The waterjet cutting gun clamping and driving device for circular pipes according to claim 1, characterized in that, The power box (42) contains a motor that is connected to the drive sprocket (43) for transmission.

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