CN114633481B

CN114633481B - Water nozzle welding machine

Info

Publication number: CN114633481B
Application number: CN202210361125.1A
Authority: CN
Inventors: 谭仕元
Original assignee: Shenzhen Honglianshuo Technology Co ltd
Current assignee: Shenzhen Honglianshuo Technology Co ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2024-05-14
Anticipated expiration: 2042-04-07
Also published as: CN114633481A

Abstract

The invention discloses a water nozzle welding machine, which comprises a pipe clamping device, a heating device and a water nozzle fixing device, wherein the pipe clamping device comprises a lower clamping jaw, a lower executing part and a driving cylinder, and a fixing hole and a welding hole are formed between the two lower clamping jaws; the heating device comprises a heating part, a floating part and a moving part, wherein the heating part comprises a heating head and a fixed seat, the floating part comprises a floating seat, and the floating seat is provided with a lifting structure; the movable part is connected with the heating part; the water nozzle fixing device comprises a drilling mechanism, a clamping jaw mechanism and a power source, wherein the drilling mechanism comprises a drill bit and a drilling machine body, a protective sleeve is arranged on the drilling machine body, and the drill bit extends out of the protective sleeve; the clamping jaw mechanism comprises two upper clamping jaws and an upper executing part, and an upper clamping jaw, a lower clamping jaw and a through hole are formed between the two upper clamping jaws; the power source is used for driving the drilling mechanism to move, so that the protective sleeve stretches into the upper clamping opening; the invention provides a water nozzle welding machine which integrates clamping, heating, welding and drilling, and ensures the processing efficiency and the processing quality.

Description

Water nozzle welding machine

Technical Field

The application relates to the technical field of pipe fitting welding, in particular to a water nozzle welding machine.

Background

In the industry of current technological development, ultra-high voltage transformer transportation, a data center server cooling system, a battery energy storage industry and semiconductor chip ultrapure water transportation are very high in requirements on pipeline systems and transportation systems in the industry. For example, ultra-pure water is generally used as a fluoropolymer pipe (e.g., PP, pvdf.) for the ultra-pure water system delivery pipe. Accordingly, the welding process requirements are more strict, and because of the actual use requirements of the industry, the welding process has very special requirements on a plurality of pipelines and process directions, such as a traditional socket welding mode, so that the pipelines have protruding welding flux, and the pipelines have the influence of dead water and flow velocity and flow in operation and transportation.

At present, when welding a pipe and a water nozzle pipe fitting by a welding machine, firstly heating the pipe and the water nozzle pipe fitting to enable the pipe and the water nozzle pipe fitting to be molten, then butting the pipe and the water nozzle pipe fitting, bonding the cooled pipe and the water nozzle pipe fitting together, and finally punching the bonded pipe fitting to remove the residual materials; however, in the prior art, most of the welding is manually socket-welded by workers, so that the labor intensity is high, the production efficiency is low, the pipeline welding is unstable easily, the welding quality is high, and the requirement of a pipeline system in the high-end industry cannot be met.

Disclosure of Invention

The invention mainly aims at solving the problems and aims at solving the problems in the background.

In order to achieve the above purpose, the invention provides a water nozzle welding machine, which comprises a machine base, wherein the machine base is provided with:

The pipe clamping device comprises two lower clamping jaws, a lower executing component for driving the two lower clamping jaws to finish clamping actions, and a driving cylinder for driving the two lower clamping jaws and the executing component to lift, wherein a fixing hole for clamping a pipe and a welding hole for placing a water containing nozzle are formed between the two lower clamping jaws;

the heating device comprises a heating part, a floating part and a moving part, wherein the heating part comprises a heating head and a fixing seat for fixing the heating head, the floating part comprises a floating seat, and a lifting structure for enabling the heating head to move up and down when an acting force is applied or removed to the heating part is arranged on the floating seat; the movable part is connected with the heating part or the floating part and is used for driving the heating head of the heating part to be in the same axis with the welding hole; and

The water nozzle fixing device comprises a drilling mechanism, a clamping jaw mechanism and a power source, wherein the drilling mechanism comprises a drill bit and a drill body for driving the drill bit to rotate, a protective sleeve is arranged on the drill body, and the drill bit extends out of the protective sleeve; the clamping jaw mechanism comprises two upper clamping jaws and an upper executing component for driving the two upper clamping jaws to finish clamping actions, and an upper clamping opening for clamping the protective sleeve, a lower clamping opening for clamping the water nozzle and a through hole for allowing the drill bit to extend into or extend out of the lower clamping opening are formed between the two upper clamping jaws; the power source is used for driving the drilling mechanism to move, so that the protective sleeve stretches into the upper clamping opening.

Further, the lifting structure is a telescopic rod, and one end of the telescopic rod is connected with the floating seat.

Further, the moving part comprises a stroke cylinder and a side plate fixedly connected with the fixed seat, a sliding groove is formed in the floating seat, the side plate stretches into the sliding groove and is arranged in a sliding mode with the floating seat, and the stroke cylinder is used for driving the side plate to move on the sliding groove.

Further, the wire fixing seat is arranged on the side plate, and a wire hole is formed in the wire fixing seat.

Further, the floating seat is provided with a through hole corresponding to the wiring hole, and wiring pipes are arranged on the through hole and the wiring hole in a penetrating manner.

Further, the drill hole body or the protective sleeve is provided with a blow-off hole, the blow-off hole is used for being connected with an external air source, and the external air source is used for enabling air flow to be sent out along the drill hole direction from the blow-off hole.

Further, the caliber of the upper clamping opening is larger than that of the through hole, so that the upper clamping opening is provided with a supporting part which contacts the protective sleeve.

Further, the base is provided with a chip groove, and the chip groove is positioned at the lower end of the pipe clamping device.

Further, the fixing device further comprises a pipe clamp seat and a vertical plate perpendicular to the pipe clamp seat, the clamping jaw mechanism is installed on the pipe clamp seat, the drilling mechanism is slidably arranged with the vertical plate, the power source is fixedly connected with the vertical plate, a screw rod shaft penetrating through the drilling mechanism is arranged at the output end of the power source, and the drilling mechanism is in threaded connection with the screw rod shaft.

Further, an upper moving guide rail and a lower moving guide rail are arranged on the base, a sliding plate is arranged on the pipe clamp seat, and the sliding plate is provided with a sliding opening arranged on the upper moving guide rail; the pipe clamp device further comprises a sliding table slidably arranged on the lower moving guide rail.

Compared with the prior art, the water nozzle welding machine provided by the invention integrates clamping, heating, welding and drilling, so that the machining efficiency is ensured, on one hand, the floating component with the free falling body design is adopted, the unified regulation and control of the heating sequence, the heating time and the heating pressure-bearing force of the pipeline can be realized, the welded pipeline is more firm, and the welding quality is ensured; on the other hand, the protective sleeve is arranged on the drilling machine body, and when drilling is carried out, the protective sleeve is clamped by the clamping jaw, so that the drilling machine body is stable, the problem of shaking of the drilling machine is solved, and meanwhile, the protective sleeve is prevented from being exposed outside when a drill bit drills, and potential safety hazards are eliminated.

Drawings

FIG. 1 is an overall assembly view of a water nozzle welder of the present disclosure.

FIG. 2 is a side view of a portion of the structure of a tap welder in accordance with the present disclosure.

FIG. 3 is a perspective view of a portion of the structure of a tap welder according to the present disclosure.

Fig. 4 is a schematic front view of a heating device according to the present disclosure.

Fig. 5 is a schematic view showing a back structure of the heating apparatus according to the present application.

Fig. 6 is a perspective view showing a structure of a water nozzle clamping device according to the present application.

Fig. 7 is a schematic cross-sectional view of a water nozzle clip apparatus according to the present disclosure.

Reference numerals shown in the drawings:

100. A pipe clamping device; 10. a lower jaw; 11. a lower execution part; 12. a driving cylinder; 13. a sliding table; 101. a fixing hole; 102. welding holes;

200. A heating device; 20. a heating member; 201. a heating head; 202. a fixing seat; 2020. clamping ports; 21. a floating member; 211. a floating seat; 212. a lifting structure; 2110. a chute; 2111. a through hole; 22. a moving member; 221. a side plate; 222. a push rod; 23. a wire fixing seat; 2301. a wiring hole; 2302. bolt holes; 2303. a centering hole;

300. A water nozzle fixing device; 30. a drilling mechanism; 301. a drill bit; 302. a drill body; 303. a protective sleeve; 3001. a blow-off hole; 31. a jaw mechanism; 310. an upper clamping jaw; 3101. an upper clamping opening; 3102. a lower clamping opening; 3103. a through hole; 3104. a holding portion; 3105. anti-skid lines; 32. a power source; 320. a screw shaft; 33. a pipe clamp seat; 34. a vertical plate; 35. a slide plate; 3501. a sliding port;

400. A base; 40. an upper moving guide rail; 41. a lower moving guide rail; 401. a chip groove.

Detailed Description

The following detailed description of the present invention, taken in conjunction with the accompanying drawings, will clearly and fully describe the technical solutions of the embodiments of the present invention, it being evident that the described embodiments are only some, but not all, embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the present invention provides a water nozzle welding machine, which comprises a stand 400, wherein the stand 400 adopts a stepped operation table, which is convenient for operation and production, the stand 400 is provided with a pipe clamping device 100, a heating device 200 and a water nozzle fixing device 300, wherein stations for arranging the pipe clamping device 100, the heating device 200 and the water nozzle fixing device 300 can be provided with a group or a plurality of groups, and all stations can be linked or can be manually controlled singly.

As shown in fig. 2, the working process of the invention is as follows:

Starting the heating device 200 to start preheating, opening the lower clamping jaw 10 of the lower calandria clamping device 100, putting plastic pipes to be welded, and then closing the lower clamping jaw 10; opening the upper jaw 310 of the upper nozzle fixing device 300, and closing the upper jaw 310 after the water nozzle is put in; the whole lower calandria clamping device 100 rises, pushes the whole lower calandria clamping device to a welding position for calibration, manually presses down a switch button of each water nozzle to enable water have a loose tongue to move to an accurate position, after calibration, the lower calandria clamping device 100 falls to a starting position, wipes and cleans each welding position, then pushes out the heating device 200 after preheating is finished, the lower calandria clamping device 100 pushes upwards to a heating position, when the bottom pipe clamping device 100 rises to contact with a heating head 201 of the heating device 200, namely, when all upper and lower heating positions are in zero contact, a pipe clamped by the pipe clamping device 100 can be heated, after the pipe clamping device is heated to a preset time, a platform continues to push, the heating head 201 of a heating part 20 is driven to rise, the other end of the heating head 201 contacts with the water nozzle clamped by the water nozzle fixing device 300, the part to be heated for secondary heating is continued to be heated for a preset time; after the heating is completed, the lower calandria clamping device 100 is lowered, the heating device 200 returns to the initial position, and the pipe clamping device 100 is raised. Overlapping the welding positions of the upper side pipe and the lower side pipe with the water nozzle pipe, and starting cooling; after cooling is completed, the drilling machine of the upper drain nozzle fixing device 300 automatically falls, a welded pipeline is drilled from the inside of the upper clamping jaw 310, the blowing system is simultaneously started, and the drilling and blowing are performed simultaneously, so that chips generated by the drilling of the pipeline fall into the chip receiving groove 401; the drilling machine finishes the drilling and returns to the initial position, and the platform falls to return to zero; after the welding is completed, the lower clamping jaw 10 of the lower row is automatically opened, and the finished product is taken out.

The composition and connection relationship of the pipe clamp device 100 will be described in detail below with reference to specific examples.

Fig. 2 and 3 disclose a schematic structural view of a pipe clamping device 100, specifically, as shown in fig. 2 and 3, the pipe clamping device 100 includes two lower clamping jaws 10, a lower actuating member 11 for driving the two lower clamping jaws 10 to complete a clamping action, and a driving cylinder 12 for driving the two lower clamping jaws 10 and the lower actuating member 11 to lift, wherein a fixing hole 101 for clamping a pipe is formed between the two lower clamping jaws 10, and a welding hole 102 for placing a water nozzle.

In the above embodiment, the lower executing part 11 for driving the two lower clamping jaws 10 to clamp and fix the pipe may be a motor or an air cylinder, the lower executing part 11 expands the two lower clamping jaws 10 to splay the lower clamping jaws 10 to install the pipe, the pipe is horizontally placed in the fixing hole 101, the top of the two lower clamping jaws 10 is hollow for welding with the welding hole 102, and before clamping, the pipe to be welded can be horizontally displaced left and right, so that the welding position is accurate.

Preferably, the pipe clamping device 100 further includes a sliding table 13, the base 400 is laterally provided with a lower moving rail 41, and the sliding table 13 is fitted on the lower moving rail 41 to be integrally displaceable with the pipe clamping device 100.

The composition and connection relationship of the heating device 200 will be described in detail with reference to specific examples.

Fig. 4 and fig. 5 disclose a heating device 200 according to the first embodiment, specifically, as shown in fig. 4 and fig. 5, the heating device includes a heating component 20 and a floating component 21, the heating component 20 includes a heating head 201 and a fixing seat 202 for fixing the heating head 201, the fixing seat 202 is provided with a through clamping opening 2020, when the heating head 201 adopts two groups, the contact end of one group is structurally shaped with the outer circular surface of the pipe, the contact end of the other group is structurally shaped with the end surface of the water nozzle pipe, and of course, the heating head 201 can also be installed in the clamping opening 2020 by adopting an integral structure, and the structure of the heating head 201 is approximately in a convex arc shape on the upper surface and in a concave arc shape on the lower surface.

In the above embodiment, the floating member 21 includes the floating seat 211, and the lifting structure 212 for displacing the heating head 201 up and down when the force is applied or removed to the heating member 20 is provided on the floating seat 211; it will be appreciated that, as shown in fig. 1, the lower calandria clamping device 100 is lifted to push the heating head 201, the heating head 201 can be moved synchronously by the lifting structure 212 until the heating head 201 contacts with the water nozzle clamped by the clamping jaw of the upper calandria clamping device 300, in this process, the heating head 201 heats the pipe of the lower calandria clamping device 100 first, the weight of part of the heating device 200 under the free falling structure is controlled to bear pressure, so that the welding quality of the products in the same batch is consistent, after the heating is finished, the heating head 201 is lifted to contact with the water nozzle continuously, and the welding position of the water nozzle is heated to a preset duration.

In addition, the heating device 200 in the above embodiment further includes a moving member 22, and the moving member 22 is connected to the heating member 20 or the floating member 21 for driving the heating member 20 to extend into the heating zone.

In the above embodiment, the lifting structure 212 is specifically a telescopic rod, one end of the telescopic rod is connected with the floating seat 211, and the other end of the telescopic rod is fixed on the water nozzle fixing device 300, so that a suspension structure is formed on the floating seat 211, and when the lifting structure ascends, the whole heating device 200 is driven to lift, and the lifting structure automatically returns to the initial position under the gravity, so that the configuration of a plurality of control devices and power devices is reduced, the overall structure is simplified, and the cost reduction is facilitated.

Fig. 4 and 5 show schematic structural views of the moving member 22, as shown in fig. 4 and 5, the moving member 22 includes two side plates 221 fixedly connected to the fixing base 202, two sliding grooves 2110 are provided on two sides of the floating base 211, the two side plates 221 extend into the sliding grooves 2110 and are slidably arranged with the floating base 211, and the stroke cylinder is used for driving the side plates 221 to displace on the sliding grooves 2110, so that the heating member 20 is withdrawn, and the pipe and the water nozzle pipe are butt-jointed and bonded.

The heating head 201 is connected by a power line and a temperature control line, the power line and the temperature control line which are electrically connected with the heating head 201 are fixed by a wire fixing seat 23, the wire fixing seat 23 is arranged between two side plates 221, a wire hole 2301 which is penetrated by the power line and the temperature control line is arranged in the plate surface of the wire fixing seat, and the wire body can be combed.

Preferably, the floating seat 211 has a through hole 2111 corresponding to the wiring hole 2301, wiring pipes (not shown) are provided in the through hole 2111 and the wiring hole 2301, and a power line and a temperature control line enter from the wiring pipes, so as to protect the wire body; the wire fixing seat 23 is also provided with a bolt hole 2302 for locking the wire pipe, and the structure of the wire pipe can be in an elliptical shape and the like which is not easy to rotate; the wire fixing seat 23 is also provided with two groups of centering holes 2303, the push rod 222 of the stroke cylinder passes through the wire fixing seat 23 and is connected with the wire fixing seat 23, and the two groups of centering holes 2303 enter through a fastener to keep the push rod 222 at the middle position, so that the heating head 201 can be accurately pushed to a welding position, and the welding quality is ensured.

The composition and connection relationship of the water nozzle fixture 300 will be described in detail with reference to specific examples.

Fig. 6 and 7 disclose the structure of a water nozzle fixing device 300, specifically, as shown in fig. 6 and 7, including a drilling mechanism 30, a clamping jaw mechanism 31 and a power source 32; the drilling mechanism 30 comprises a drill bit 301 and a drilling machine body 302 for driving the drill bit 301 to rotate, the drilling machine body 302 is provided with a protective sleeve 303 along the length direction of the drill bit 301, the protective sleeve 303 is sleeved outside the drill bit 301, and a drilling part of the drill bit 301 extends out of the protective sleeve 303.

The clamping jaw mechanism 31 comprises two upper clamping jaws 310 and an upper executing component (not shown) for driving the two upper clamping jaws 310 to complete clamping actions, wherein an upper clamping opening 3101 of a clamping protection sleeve 303, a lower clamping opening 3102 of a clamping water nozzle and a through hole 3103 for allowing the drill bit 301 to extend into or extend out of the lower clamping opening 3102 are formed between the two upper clamping jaws 310; when heating or drilling, the lower clamping opening 3102 is used for clamping and fixing the water nozzle pipe fitting, before drilling, the power source 32 drives the drilling mechanism 30 to descend, so that the protective sleeve 303 stretches into the upper clamping opening 3101, at the moment, the drill bit 301 stretches out of the lower clamping opening 3102, then, the upper executing part drives the two upper clamping jaws 310 to lock the protective sleeve 303, the whole drilling mechanism 30 is fixed, the phenomenon that the drilling direction deviates from a preset hole position due to shaking when the whole drilling machine drills is avoided, and particularly, for the drilling of arc-shaped pipe fitting, the hole position deviation easily discards the pipe fitting; finally, the lower pipe clamping device 100 is lifted to perform feeding movement of drilling, and when drilling, the drill bit 301 is hidden by the protective sleeve 303, the upper clamping jaw 310 and the water nozzle, so that the drill bit is prevented from being exposed, and potential safety hazards caused by misoperation of operators can be avoided.

In the process of drilling the hole by the drill 301, a great amount of scraps are generated, if the scraps are not cleaned, the processing quality of the subsequent pipe fitting is easily affected, in this embodiment, a blow hole 3001 is formed on the drill body 302 or the protective sleeve 303, the blow hole 3001 is used for connecting an external air source, air flow is sent from the blow hole 3001 by the external air source, and the scraps generated by the hole are sent from the inside of the protective sleeve 303, namely, the scraps generated by the hole are dropped to a scraps receiving groove 401 along the vertical direction of the hole, and the scraps groove 401 is positioned at the lower end of the pipe clamping device 100; in some preferred embodiments, an external hand-held spray gun may also be provided on the housing 400, from which the debris cannot fall into the debris slot 401.

In the above embodiment, as shown in fig. 7, the two upper clamping jaws 310 are half arc blocks with mirror symmetry, after the two half arc blocks are driven by the upper executing component, the formed upper clamping opening 3101, the lower clamping opening 3102 and the through hole 3103 are all circular, the aperture of the upper clamping opening 3101 is larger than that of the through hole 3103, so that the upper clamping opening 3101 forms a supporting part 3104 for limiting the protective sleeve 303 to continuously descend, and when the protective sleeve 303 touches the supporting part 3104, the upper executing component can be started to lock.

Preferably, the lower clamping opening 3102 of the clamping water nozzle is provided with anti-slip patterns 3105 for increasing the friction force for clamping the water nozzle.

Referring to fig. 6 and 7, as shown in fig. 6 and 7, the fixing device further includes a pipe holder 33 and a vertical plate 34 perpendicular to the pipe holder 33, the clamping jaw mechanism 31 is mounted on the pipe holder 33, the drilling mechanism 30 and the vertical plate 34 are slidably disposed, the power source 32 is fixedly connected to the vertical plate 34, the output end of the power source 32 is provided with a screw shaft 320 penetrating the drilling mechanism 30, the drilling mechanism 30 is in threaded connection with the screw shaft 320, the screw shaft 320 is driven by the power source 32 to rotate, so as to drive the drilling mechanism 30 to lift up and down, and because the drilling mechanism 30 is slidably disposed on the vertical plate 34, the whole drilling mechanism 30 is required to be stabilized during drilling, so as to avoid shaking of the drilling mechanism 30.

In addition, the pipe clamp holder 33 is provided with a sliding plate 35, the sliding plate 35 is provided with a sliding opening 3501, the machine base 400 is transversely provided with an upper moving guide rail 40, and the sliding plate 35 is assembled on the upper moving guide rail 40, so that the heating device 200 and the water nozzle fixing device 300 can be integrally displaced, and the positions of the whole water nozzle fixing device 300 and the heating device 200 can be adjusted to correspond to the pipe clamp device 100.

The present application may be readily implemented by those skilled in the art upon reading the above detailed description. It should be understood that the application is not limited to such specific embodiments. On the basis of the disclosed embodiments, a person skilled in the art of basic can combine different technical features at will, so that different technical solutions are realized, and other technical solutions can be formed by combining additional functions in different forms. Accordingly, the scope of the application is limited only by the scope of the appended claims.

The foregoing description of the invention has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the invention pertains, based on the idea of the invention.

Claims

1. The utility model provides a water injection well choke welding machine which characterized in that includes the frame, be provided with on the frame:

The water nozzle fixing device comprises a drilling mechanism, a clamping jaw mechanism and a power source, wherein the drilling mechanism comprises a drill bit and a drill body for driving the drill bit to rotate, a protective sleeve is arranged on the drill body, and the drill bit extends out of the protective sleeve; the clamping jaw mechanism comprises two upper clamping jaws and an upper executing component for driving the two upper clamping jaws to finish clamping actions, and an upper clamping opening for clamping the protective sleeve, a lower clamping opening for clamping the water nozzle and a through hole for allowing the drill bit to extend into or extend out of the lower clamping opening are formed between the two upper clamping jaws; the power source is used for driving the drilling mechanism to move so that the protective sleeve stretches into the upper clamping opening;

the caliber of the upper clamping opening is larger than that of the through hole, so that the upper clamping opening is provided with a supporting part which contacts the protective sleeve.

2. The water nozzle welding machine according to claim 1, wherein the lifting structure is a telescopic rod, and one end of the telescopic rod is connected with the floating seat.

3. The water nozzle welding machine according to claim 2, wherein the moving part comprises a stroke cylinder and a side plate fixedly connected with the fixed seat, a sliding groove is formed in the floating seat, the side plate extends into the sliding groove to be slidably arranged with the floating seat, and the stroke cylinder is used for driving the side plate to move on the sliding groove.

4. A tap welder as claimed in claim 3, further comprising a wire fixing seat mounted on the side plate, wherein the wire fixing seat is provided with a wire routing hole.

5. The water nozzle welding machine according to claim 4, wherein the floating seat is provided with a through hole corresponding to the wiring hole, and wiring pipes are arranged on the through hole and the wiring hole in a penetrating manner.

6. A tap welder as claimed in claim 1, wherein the drill body or the protective sleeve is provided with a blow-off hole for connection to an external air source for feeding air from the blow-off hole in the direction of drilling.

7. The water nozzle welder of claim 6, wherein the base is provided with a chip groove at a lower end of the pipe clamping device.

8. The water nozzle welding machine according to claim 1, wherein the fixing device further comprises a pipe clamp seat and a vertical plate perpendicular to the pipe clamp seat, the clamping jaw mechanism is installed on the pipe clamp seat, the drilling mechanism is slidably arranged with the vertical plate, the power source is fixedly connected with the vertical plate, a screw shaft penetrating through the drilling mechanism is arranged at the output end of the power source, and the drilling mechanism is in threaded connection with the screw shaft.

9. The water nozzle welding machine according to claim 8, wherein an upper moving guide rail and a lower moving guide rail are arranged on the machine base, a sliding plate is arranged on the pipe clamp seat, and the sliding plate is provided with a sliding opening arranged on the upper moving guide rail; the pipe clamp device further comprises a sliding table slidably arranged on the lower moving guide rail.