CN219113188U - Water-guide laser cutting device for metal hollow body - Google Patents

Abstract

The utility model discloses a water-guide laser cutting device for a metal hollow body, which comprises a feeding unit, a positioning unit, a cutting unit and a discharging unit which are sequentially arranged along the travelling route of the metal hollow body, wherein the cutting unit is arranged corresponding to a cutting station and comprises a water-guide laser cutting mechanism, the water-guide laser cutting mechanism is used for outputting a coupling body of a laser beam and a high-pressure water column, the laser beam can be totally reflected in the coupling body in the high-pressure water column, and when the coupling body is contacted with a to-be-cut area of the metal hollow body, the laser energy can melt the metal material, and meanwhile, the high-pressure water column can wash and remove the melted metal material, so that the metal hollow body is cut. The utility model adopts non-contact water-guided laser cutting, which can save raw materials, quickly change shape, improve cutting quality, reduce maintenance cost and labor intensity, ensure that the product is easy to clean, does not consume high-pressure gas and has no requirement on the cylindricity of the product.

Description

Water-guide laser cutting device for metal hollow body

Technical Field

The utility model belongs to the technical field of processing equipment of metal hollow bodies, and particularly relates to a water-guide laser cutting device for a metal hollow body.

Background

The metal hollow body is a metal cylindrical body with one end open, such as a metal can and a power battery shell. Taking a metal can (two-piece can made of iron, aluminum, or the like) as an example, a metal can is generally composed of a can lid and a can body, and is cut in the height direction after the can body is stretch-molded, so a can opening cutting device is used.

At present, most of cutting devices of metal cans are mechanical cutting devices, and the defects of the mechanical devices include: the structure is complex, the precision requirement is high, the cutter needs to be replaced frequently, the maintenance cost is high, and the requirement on maintenance personnel is high (especially the adjustment of the cutter head).

Specifically, the existing cutting machine generally has the following problems due to the adoption of a mechanical cutting device:

1. for continuous and reliable production, can factories need to replace some vulnerable parts regularly, and a certain amount of the vulnerable parts need to be stored according to the exchange period and the replacement period of the vulnerable parts, so that the maintenance cost is high;

2. due to the limitation of the mechanical structure, the width of the waste ring generated after cutting is not less than 3mm, the waste of raw materials is caused to a certain extent, and the tank opening is turned outwards to a certain extent after cutting; in addition, typical problems such as flat cans, clamping cans and the like exist;

3. in order to ensure that the mechanical cutter can stably feed cans, a certain number of cans are required to be accumulated between the stretcher and the cutter, the distance between the stretcher and the mechanical cutter is increased, and then the speed of the mechanical cutter is required to be regulated so as to ensure that the accumulated number of cans is relatively fixed, and the mechanical cutter is required to be frequently switched between high speed and low speed;

4. the multi-tank type collinear production is a development trend at present, the conventional cutting machine has a complex type changing process and long working hours, and after the type changing is completed, the smooth production can be achieved only by carrying out debugging at different degrees according to actual conditions. Therefore, the requirement of quick change is not met, and the production efficiency of a factory is affected.

Another metal can cutting method commonly used at present is laser cutting, but the existing laser cutting method needs to consume a large amount of compressed gas, and cutting slag is easy to adhere to the inner wall, so that certain adverse effect is generated on cleaning.

Therefore, how to solve the above-mentioned drawbacks of the prior art is a subject to be studied and solved by the present utility model.

Disclosure of Invention

The utility model mainly aims to provide a water-guide laser cutting device for a metal hollow body, which aims to overcome the defects in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the utility model comprises the following steps:

the utility model provides a water-guided laser cutting device for a metal hollow body, which comprises a feeding unit, a positioning unit, a cutting unit and a discharging unit, wherein the feeding unit, the positioning unit and the discharging unit are sequentially arranged along the travelling route of the metal hollow body;

wherein the feeding unit is used for conveying the metal hollow body to the positioning unit; the positioning unit is at least used for moving the metal hollow body to a cutting station and conveying the cut metal hollow body to the discharging unit;

the cutting unit is arranged corresponding to the cutting station and comprises a water-guide laser cutting mechanism, the water-guide laser cutting mechanism is used for outputting a coupling body of a laser beam and a high-pressure water column, the laser beam in the coupling body can be totally reflected in the high-pressure water column, and when the coupling body is contacted with a to-be-cut area of the metal hollow body, the laser energy can enable the metal material to be melted, and meanwhile the high-pressure water column can flush and remove the melted metal material, so that the metal hollow body is cut.

Further, the cutting unit comprises a water guide laser processing head, the water guide laser processing head comprises a water guide laser processing head body, a laser inlet, a water inlet and an output port are formed in the water guide laser processing head body, the laser inlet and the water inlet are respectively used for supplying laser beams and high-pressure water to enter the inner cavity of the water guide laser processing head body, and the output port is used for converting the laser beams and the high-pressure water entering the inner cavity of the water guide laser processing head body into coupling bodies of the laser beams and the high-pressure water column to be output.

Still further, the cutting unit still includes laser source, collimating lens and focusing lens, and the laser beam that the laser source provided is after passing through collimating lens and focusing lens in proper order, follows the laser entry gets into water guide laser processing head body inner chamber, and high-pressure water is passed through simultaneously the water inlet gets into water guide laser processing head body inner chamber.

Further, the positioning unit comprises a turntable frame, at least one rotary positioning structure for positioning the metal hollow body is arranged on the turntable frame, and the rotary positioning structure rotates together with the turntable frame; when the turntable frame rotates, the rotary positioning structure is used for aligning the feeding unit, the cutting unit and the discharging unit of the device in sequence;

when the rotary positioning structure rotates along with the turntable frame to be matched with the feeding unit, the metal hollow body to be cut enters the rotary positioning structure through the feeding unit, and the rotary positioning structure positions the metal hollow body and drives the metal hollow body to rotate by taking the longitudinal central line of the metal hollow body as an axis;

when the rotary positioning structure rotates along with the turntable frame to be matched with the cutting station, the metal hollow body to be cut outputs a coupling body of a laser beam and a high-pressure water column through a water-guide laser cutting mechanism in the cutting unit, and the coupling body contacts with the outer surface of the metal hollow body, so that the water-guide laser cutting mechanism completes cutting of the metal hollow body after the metal hollow body at least rotates once;

the cut metal hollow body continuously rotates along with the turntable frame to be matched with the discharge unit in an alignment way, and the discharge unit finishes discharging.

Further, when the number of the rotational positioning structures is greater than one, the rotational positioning structures are uniformly arranged in the circumferential direction of the center of rotation of the turret frame.

Further, the turntable frame is disc-shaped, and the rotary positioning structure is arranged at the edge of the disc.

Still further, the rotary positioning structure comprises a body length positioning unit and a bottom positioning unit which are coaxially arranged, wherein the metal hollow body is arranged in the body length positioning unit, the metal hollow body is supported from the inside, and the bottom positioning unit is used for positioning the bottom of the metal hollow body; and the body length positioning unit and the bottom positioning unit are also in transmission connection with a driving mechanism, and under the driving of the driving mechanism, the body length positioning unit and the bottom positioning unit can synchronously rotate around the shaft.

Further, the feeding unit comprises a feeding turntable, the feeding turntable is arranged corresponding to the feeding unit, and the rotating shaft of the feeding turntable is parallel to the rotating shaft of the turntable frame; the feeding turntable is provided with at least one feeding port, and when the number of the feeding ports is greater than one, the feeding ports are uniformly distributed in the circumferential direction of the rotation center of the feeding turntable. Further, the discharging unit comprises a discharging turntable, the discharging turntable is arranged corresponding to the discharging unit, and the rotating shaft of the discharging turntable is parallel to the rotating shaft of the turntable frame; the blanking turntable is provided with at least one blanking port, and when the number of the blanking ports is greater than one, the blanking ports are uniformly arranged in the circumferential direction of the rotation center of the blanking turntable.

Further, the area to be cut of the metal hollow body is an edge area of one end of the metal hollow body.

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

(1) The utility model adopts the water-guided laser cutting, the metal hollow body is not contacted in the cutting process, and can opening burrs caused by cutter abrasion do not exist, thereby avoiding the complicated adjustment of cutter precision and the regular replacement of cutters.

(2) The utility model adopts the water-guided laser cutting, and the requirement on the width of the waste ring is reduced because of the narrow kerf, and the blanking size of the previous working procedure can be reduced, thereby saving raw materials.

(3) The utility model adopts the water-guided laser cutting, the tank type switching process can complete the type changing process only by adjusting the position of the cutting unit and then replacing a small amount of type changing pieces, thereby reducing the quality requirements of maintenance personnel.

(4) The utility model adopts the water-guided laser cutting, does not need to change speed in the operation process, can be operated at a fixed speed, does not need accumulation of the pot, and reduces the distance between the pot and the stretcher.

(5) The utility model adopts the water-guided laser cutting, and compared with the common laser cutting, the water-guided laser cutting is adopted, so that cutting slag is carried away by water and cannot adhere to the upper surface of the inner wall, and the cleaning difficulty is reduced.

(6) The utility model adopts the water-guided laser cutting, and compared with the common laser cutting, the utility model does not need high-pressure compressed gas and is more energy-saving.

(7) compared with the common laser cutting, the utility model has the advantages of water-guided laser cutting, no requirement on the cylindricity of the hollow body and simple equipment when cutting the thin-wall hollow body.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a metal hollow body water-guided laser cutting device in an embodiment of the present application.

Fig. 2 is a top view of a hollow metal body water-guided laser cutting device in an embodiment of the present application.

Fig. 3 is a side view of a hollow metal body water-guided laser cutting device in an embodiment of the present application.

Fig. 4 is an enlarged schematic view at a in fig. 1.

Fig. 5 is a schematic view of a region to be cut of a metal hollow body in an embodiment of the present application.

Reference numerals illustrate: 1. the metal hollow body, 11, the area to be cut, 2, the feeding unit, 21, the material loading carousel, 211, the material loading carousel axis of rotation, 212, the feed inlet, 3, the positioning unit, 31, carousel frame, 311, carousel frame axis of rotation, 32, rotary positioning structure, 321, the bottom positioning unit, 4, the discharge unit, 41, the unloading carousel, 411, the unloading carousel axis of rotation, 412, the feed inlet, 5, the laser beam, 6, the high-pressure water column, 7, the cutting unit, 71, the water leads laser processing head body, 72, the laser entry, 73, the water inlet, 74, the delivery outlet, 8, the longitudinal centerline.

Detailed Description

In view of the defects existing in the prior art, the inventor can put forward the technical scheme of the utility model through long-term research and a large amount of practice, and by adopting the water-guided laser cutting, the raw materials can be saved, the raw material cost is reduced, meanwhile, the quick and simple type change can be realized, the type change time is saved, and the requirements of multi-tank collinear production in the current tank factories are met; stable cutting quality, no burrs, spiral cans, shrunken cans and other defects; the maintenance is simple and the maintenance cost is low; the floor space is small, the equipment spacing is reduced, the walking intensity of workers is reduced, the product is easy to clean, high-pressure gas is not consumed, and the cylindricity of the product is not required. The utility model will be described in further detail below with reference to the drawings and the detailed description.

Examples

The embodiment provides a water-guided laser cutting device for a metal hollow body, which comprises a feeding unit 2, a positioning unit 3, a cutting unit 7 and a discharging unit 4, wherein the feeding unit 2, the positioning unit 3 and the discharging unit 4 are sequentially arranged along the travelling route of the metal hollow body 1 as shown in fig. 1-3.

Wherein the feeding unit 2 is used for conveying the metal hollow body 1 to the positioning unit 3; the positioning unit 3 is at least used for moving the metal hollow body 1 to a cutting station and conveying the cut metal hollow body 1 to the discharging unit 4; the cutting unit 7 is arranged corresponding to the cutting station and comprises a water-guided laser cutting mechanism for outputting a coupling body of a laser beam and a high-pressure water column, as shown in fig. 4, in which the laser beam 5 can be totally reflected in the high-pressure water column 6, and when the coupling body is contacted with the area to be cut of the metal hollow body 1, the laser energy therein can melt the metal material, and the high-pressure water column 6 can flush and remove the melted metal material, thereby realizing the cutting of the metal hollow body 1.

In this embodiment, the cutting unit 7 includes a water-guiding laser processing head, the water-guiding laser processing head includes a water-guiding laser processing head body 71, a laser inlet 72, a water inlet 73 and an output port 74 are provided on the water-guiding laser processing head body 71, the laser inlet 72 and the water inlet 73 are respectively used for supplying laser beams and high-pressure water into the inner cavity of the water-guiding laser processing head body 71, and the output port 74 is used for converting the laser beams and the high-pressure water which enter the inner cavity of the water-guiding laser processing head body 71 into coupling bodies of the laser beams 5 and the high-pressure water column 6 for outputting; in particular, the cutting unit 7 further includes a laser light source, a collimator lens and a focusing lens (not shown), and after the laser beam provided by the laser light source sequentially passes through the collimator lens (to reduce the divergence angle of the laser beam and facilitate the transmission of light) and the focusing lens (to obtain a small spot, so that the energy of the small spot is more concentrated), the laser beam enters the inner cavity of the water-guided laser processing head body 71 from the laser inlet 72, and meanwhile, high-pressure water enters the inner cavity of the water-guided laser processing head body 71 through the water inlet 73.

In this embodiment, the positioning unit 3 comprises a turntable frame 31, and at least one rotary positioning structure 32 for positioning the metal hollow body 1 is provided on the turntable frame 31, and the rotary positioning structure 32 rotates together with the turntable frame 31; when the turntable frame 31 rotates, the rotary positioning structure 32 sequentially aligns the feeding unit 2, the cutting unit 7 and the discharging unit 4 of the device; in specific implementation, the turntable frame 31 is disc-shaped, the rotating shaft 311 of the turntable frame is positioned at the center of the disc and horizontally arranged, the edge of the turntable frame 31 is provided with a plurality of rotary positioning structures 32 for positioning the metal hollow body 1, and the rotary positioning structures 32 are uniformly arranged in the circumferential direction of the rotating center of the turntable frame 31; in a specific implementation process, the rotary positioning structure 32 comprises a body length positioning unit (not depicted in the figure) and a bottom positioning unit 321 which are coaxially arranged, the metal hollow body 1 is arranged in the body length positioning unit, the metal hollow body 1 is supported from the inside, and the bottom positioning unit 321 is used for positioning the bottom of the metal hollow body 1; the body length positioning unit and the bottom positioning unit 321 are also in transmission connection with a driving mechanism (not depicted in the figure), and the body length positioning unit and the bottom positioning unit 321 can synchronously rotate around a shaft under the driving of the driving mechanism (a servo motor can be adopted); since the rotation positioning structure 32 can also drive the metal hollow body 1 to rotate while the rotation positioning structure 32 revolves around the center of the turntable frame 31 with the metal hollow body 1 when the metal hollow body 1 is positioned in the rotation positioning structure 32, the time utilization rate is extremely high.

When the rotary positioning structure 32 rotates along with the turntable frame 31 to be matched with the feeding unit 2, the metal hollow body 1 to be cut enters the rotary positioning structure 32 through the feeding unit 2, and the rotary positioning structure 32 positions the metal hollow body 1 and drives the metal hollow body 1 to rotate by taking the longitudinal central line 8 as an axis;

when the rotary positioning structure 32 rotates along with the turntable frame 31 to be matched with a cutting station, the metal hollow body 1 to be cut outputs a coupling body of the laser beam 5 and the high-pressure water column 6 through the water-guiding laser cutting mechanism in the cutting unit 7, and the coupling body contacts with the outer surface of the metal hollow body, so that the water-guiding laser cutting mechanism completes cutting of the metal hollow body 1 after the metal hollow body 1 at least rotates once;

the cut metal hollow body 1 continues to rotate along with the turntable frame 31 to be matched with the discharge unit 4 in a matching way, and the discharge unit 4 finishes discharging.

In this embodiment, the feeding unit 2 includes a feeding turntable 21, where the feeding turntable 21 is disposed corresponding to the feeding unit 2, a rotation axis 211 of the feeding turntable is parallel to a rotation axis 311 of the turntable frame, the feeding turntable 21 is provided with a plurality of feeding ports 212, and each of the feeding ports 212 is uniformly disposed in a circumferential direction of a rotation center of the feeding turntable 21; the feeding turntable 21 feeds the metal hollow bodies 1 to be cut into the rotary positioning structure 32 on the turntable frame 31 one by using the feeding port 212 through rotation; the discharging unit 4 includes a discharging turntable 41, the discharging turntable 41 is disposed corresponding to the discharging unit 4, and a discharging turntable rotation shaft 411 is parallel to the turntable frame rotation shaft 311; the blanking turntable 41 is provided with a plurality of blanking openings 412, and the blanking openings 412 are uniformly arranged in the circumferential direction of the rotation center of the blanking turntable 41; the blanking turntable 41 moves the cut metal hollow bodies 1 out of the rotary positioning structure 32 on the turntable frame 31 one by using the blanking port 412 through rotation; in the specific implementation process, the rotation time sequences of the feeding turntable 21, the turntable frame 31 and the discharging turntable 41 are corresponding, so that the time utilization rate is further improved, and the processing efficiency is further improved.

In this embodiment, as shown in fig. 5, the region 11 to be cut of the metal hollow body 1 is an edge region of one end of the metal hollow body 1.

The working procedure of the cutting device for the metal hollow body of the embodiment is as follows:

each metal hollow body 1 to be trimmed enters the rotary positioning structure 32 of the turntable frame 31 one by one through the feeding turntable 21 at the feeding unit 2, and only one metal hollow body 1 enters the rotary positioning structure 32 at a time;

when the metal hollow body 1 falls into the body length positioning unit on the rotary positioning structure 32 and is captured by the bottom positioning unit 321 of the metal hollow body 1, the bottom of the metal hollow body 1 is vacuum adsorbed, and the body length positioning unit and the bottom positioning unit 321 rotate at the same rotation speed and direction; the turntable frame 31 moves the metal hollow body 1 to a cutting station by rotating; at the moment, the water-guide laser cutting mechanism is opened, the high-pressure water column and the laser coupling body are cut and shot to the surface of the autorotation metal hollow body 1, and the cutting operation is started;

when the cutting is completed, the water-guided laser cutting mechanism is turned off, and at the same time, the turntable frame 31 continues to rotate, and the cut metal hollow body 1 is moved to the discharge unit 4; at this time, the cut metal hollow body 1 is pushed away from the rotary positioning structure 32, enters the blanking turntable 41, and is blanked through the blanking turntable 41; the cutting device thus completes a working cycle.

While the utility model has been described with reference to an illustrative embodiment, it will be understood by those skilled in the art that various other changes, omissions and/or additions may be made and substantial equivalents may be substituted for elements thereof without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed for carrying out this utility model, but that the utility model will include all embodiments falling within the scope of the appended claims. Moreover, unless specifically stated any use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.

Claims (10)

1. The water-guide laser cutting device for the metal hollow body is characterized by comprising a feeding unit (2), a positioning unit (3), a cutting unit (7) and a discharging unit (4), wherein the feeding unit (2), the positioning unit (3) and the discharging unit (4) are sequentially arranged along the travelling route of the metal hollow body;

wherein the feeding unit (2) is used for conveying the metal hollow body (1) to the positioning unit (3); the positioning unit (3) is at least used for moving the metal hollow body (1) to a cutting station and conveying the cut metal hollow body (1) to the discharging unit (4);

the cutting unit (7) is arranged corresponding to the cutting station and comprises a water-guide laser cutting mechanism, wherein the water-guide laser cutting mechanism is used for outputting a coupling body of a laser beam and a high-pressure water column, the laser beam can conduct total reflection in the high-pressure water column in the coupling body, and when the coupling body is contacted with a to-be-cut area of the metal hollow body (1), the laser energy can enable the metal material to be melted, and meanwhile the high-pressure water column can flush and remove the melted metal material, so that the metal hollow body (1) is cut.

2. The metallic hollow body water-guided laser cutting device of claim 1, wherein: the cutting unit (7) comprises a water guide laser processing head, the water guide laser processing head comprises a water guide laser processing head body (71), a laser inlet (72), a water inlet (73) and an output port (74) are formed in the water guide laser processing head body (71), the laser inlet (72) and the water inlet (73) are respectively used for supplying laser beams and high-pressure water to the inner cavity of the water guide laser processing head body (71), and the output port (74) is used for converting the laser beams and the high-pressure water which enter the inner cavity of the water guide laser processing head body (71) into coupling bodies of the laser beams and the high-pressure water column to be output.

3. The metallic hollow body water-guided laser cutting device of claim 2, wherein: the cutting unit (7) further comprises a laser light source, a collimating lens and a focusing lens, wherein a laser beam provided by the laser light source sequentially passes through the collimating lens and the focusing lens, then enters the inner cavity of the water-guide laser processing head body (71) from the laser inlet (72), and meanwhile high-pressure water enters the inner cavity of the water-guide laser processing head body (71) through the water inlet (73).

4. The metallic hollow body water-guided laser cutting device of claim 1, wherein: the positioning unit (3) comprises a turntable frame (31), wherein the turntable frame (31) is provided with at least one rotary positioning structure (32) for positioning the metal hollow body (1), and the rotary positioning structure (32) rotates along with the turntable frame (31); when the turntable frame (31) rotates, the rotary positioning structure (32) is used for aligning the feeding unit (2), the cutting unit (7) and the discharging unit (4) of the device in sequence;

when the rotary positioning structure (32) rotates along with the turntable frame (31) to be matched with the feeding unit (2), a metal hollow body to be cut enters the rotary positioning structure (32) through the feeding unit (2), and the rotary positioning structure (32) positions the metal hollow body (1) and drives the metal hollow body (1) to rotate by taking the longitudinal central line of the metal hollow body as an axis;

when the rotary positioning structure (32) rotates along with the turntable frame (31) to be matched with the cutting station, the metal hollow body to be cut outputs a coupling body of a laser beam and a high-pressure water column through a water-guide laser cutting mechanism in the cutting unit (7), and the coupling body is contacted with the outer surface of the metal hollow body, so that the water-guide laser cutting mechanism completes cutting of the metal hollow body (1) after the metal hollow body (1) at least rotates one circle;

the cut metal hollow body (1) continues to rotate along with the turntable frame (31) to be in alignment fit with the discharge unit (4), and the discharge unit (4) finishes discharging.

5. The metallic hollow body water-guided laser cutting device of claim 4, wherein: when the number of the rotary positioning structures (32) is greater than one, the rotary positioning structures (32) are uniformly arranged in the circumferential direction of the rotation center of the turntable frame (31).

6. The metallic hollow body water-guided laser cutting device of claim 4, wherein: the turntable frame (31) is disc-shaped, and the rotary positioning structure (32) is arranged at the edge of the disc.

7. The water-guided laser cutting device of a metal hollow body according to any one of claims 4 to 6, wherein: the rotary positioning structure (32) comprises a body length positioning unit and a bottom positioning unit (321) which are coaxially arranged, the metal hollow body (1) is arranged in the body length positioning unit, the metal hollow body (1) is supported from the inside, and the bottom positioning unit (321) is used for positioning the bottom of the metal hollow body (1); and the body length positioning unit and the bottom positioning unit (321) are also in transmission connection with a driving mechanism, and under the driving of the driving mechanism, the body length positioning unit and the bottom positioning unit (321) can synchronously rotate around the shaft.

8. The metallic hollow body water-guided laser cutting device of claim 4, wherein: the feeding unit (2) comprises a feeding turntable (21), the feeding turntable (21) is arranged corresponding to the feeding unit (2), and a feeding turntable rotating shaft (211) is parallel to a turntable frame rotating shaft (311); the feeding turntable (21) is provided with at least one feeding port (212), and when the number of the feeding ports (212) is greater than one, the feeding ports (212) are uniformly arranged in the circumferential direction of the rotation center of the feeding turntable (21).

9. The metallic hollow body water-guided laser cutting device of claim 4, wherein: the discharging unit (4) comprises a discharging rotary table (41), the discharging rotary table (41) is arranged corresponding to the discharging unit (4), and a rotary table rotating shaft (411) of the discharging rotary table is parallel to a rotary table frame rotating shaft (311); the blanking turntable (41) is provided with at least one blanking opening (412), and when the number of the blanking openings (412) is larger than one, the blanking openings (412) are uniformly arranged in the circumferential direction of the rotation center of the blanking turntable (41).

10. The metallic hollow body water-guided laser cutting device of claim 1, wherein: the region to be cut of the metal hollow body (1) is an edge region of one end of the metal hollow body.

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