Nozzle connection device and system

Abstract

The utility model relates to the technical field of laser processing, in particular to a nozzle connecting device and system. The nozzle connecting device comprises a nozzle connecting assembly, at least three limiting balls, a first elastic piece and an outer movable piece. A nozzle mounting groove is formed in one end of the nozzle connecting assembly, a limiting through hole is formed in the groove wall of the nozzle mounting groove, and a first limiting protrusion and an inclined groove are arranged on the inner side of the outer movable part; the limiting ball is movably arranged in the limiting through hole, the first elastic piece is arranged on the outer side of the nozzle connecting assembly, and the outer movable piece is arranged on the outer side of the first elastic piece. On the basis of the nozzle connecting device, the outer moving part is pushed upwards, so that the limiting ball moves towards the inclined groove after losing the extrusion force of the outer moving part and is separated from the nozzle limiting groove, and the nozzle can be disassembled; and the nozzle replacement efficiency is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of laser processing, and more particularly, to a nozzle connection device and a system. Background Art

[0002] Laser processing technology is a new technology born with the development of science and technology. Currently, laser technology is mainly applied in cutting, welding, quenching, drilling, micro-machining, etc. By making full use of the basic characteristics of lasers and the processability background of materials, it can further promote the rapid development of various fields.

[0003] Among them, during the laser cutting process, the laser head nozzle plays roles such as assisting the rapid ejection of auxiliary gas, preventing slag and other debris from rebounding upward, and protecting the focusing lens. At the same time, it also plays a role in controlling the gas diffusion area, thereby affecting the cutting process quality. The nozzle aperture size needs to be selected according to the thickness of the cutting material. Reasonably selecting and replacing the laser cutting nozzle aperture can obtain better product cutting effects.

[0004] During the welding process, the nozzle will be worn due to continuous contact and friction, resulting in the loss of its function over time. For example, the tip of the welding nozzle will change its internal dimensions due to the continuous grinding of the welding wire until it needs to be replaced; the gas nozzle will also have its service life shortened due to the influence of temperature in the fight against spatter. To ensure welding quality and safety, the welding nozzle needs to be replaced regularly.

[0005] Therefore, during the laser processing process, it is necessary to select and replace nozzles of different specifications according to the actual application scenario. When manually replacing the nozzle, since the nozzle at the top of the processing head is close to the heat source, it is necessary to wait for the nozzle to cool down before replacement, resulting in low replacement efficiency. Summary of the Utility Model

[0006] In view of this, the purpose of the embodiments of the present application is to provide a nozzle connection device and a system to solve the technical problem of low nozzle replacement efficiency.

[0007] In a first aspect, the embodiments of the present application provide a nozzle connection device, including: a nozzle connection assembly, at least three limiting balls, a first elastic member, and an outer movable member;

[0008] One end of the nozzle connection assembly is provided with a nozzle installation groove, and at least three limiting through holes are provided on the groove wall of the nozzle installation groove, and the number of the limiting through holes is greater than or equal to the number of the limiting balls;

[0009] The limiting balls are configured to be movably arranged in the limiting through holes;

[0010] The first elastic member is configured to be arranged on the outside of the nozzle connecting assembly, and the outer movable member is configured to be arranged on the outside of the first elastic member;

[0011] A first limiting protrusion and an oblique groove are arranged on the inner side of the outer movable part, and the outer movable part is configured to limit the first elastic part between the nozzle connecting assembly and the first limiting protrusion based on the first limiting protrusion; the oblique groove is arranged on the side of the first limiting protrusion away from the first elastic part.

[0012] In the above implementation process, the nozzle connection device includes a nozzle connection assembly, at least three limiting balls, a first elastic member and an outer movable member; a nozzle installation groove is provided at one end of the nozzle connection assembly, a limiting through hole is provided on the groove wall of the nozzle installation groove, and a first limiting protrusion and an inclined groove are provided on the inner side of the outer movable member; the limiting ball is movably arranged in the limiting through hole, the first elastic member is arranged on the outer side of the nozzle connection assembly, and the outer movable member is arranged on the outer side of the first elastic member. By placing the nozzle to be installed in the nozzle installation groove and pushing the nozzle upward, the outer movable member will squeeze the limiting ball under the action of the downward pressure provided by the first elastic member, so that the limiting ball moves to the nozzle limiting groove provided on the nozzle, thereby realizing the installation operation of the nozzle; by pushing the outer movable member upward, the limiting ball moves toward the direction of the inclined groove after losing the squeezing force of the external movable member, and detaches from the nozzle limiting groove, thereby realizing the disassembly operation of the nozzle. In the process of realizing nozzle disassembly based on the nozzle connection device, the operator does not need to directly touch the nozzle, so there is no need to wait until the nozzle is cooled before replacing it, thereby improving the efficiency of nozzle replacement. The technical problem of low nozzle replacement efficiency is solved.

[0013] In addition, in the existing manual nozzle replacement process, the operator manually tightens the nozzle to be replaced through threaded matching to achieve nozzle installation. During the nozzle installation process, it is necessary to first align the threads and tighten them step by step, which is time-consuming, and in the manual tightening process, it is impossible to judge whether the nozzle is installed in place. Based on the nozzle connection device provided by the present application, it is only necessary to place the nozzle to be installed in the nozzle installation groove and push the nozzle upward; under the action of the downward pressure provided by the first elastic member, the external movable member will squeeze the limiting ball, so that the limiting ball moves to the nozzle limiting groove set on the nozzle, so that the nozzle installation operation can be achieved, reducing the time required for nozzle installation, thereby further improving the efficiency of nozzle replacement; and through the cooperation of the first elastic member and the limiting ball, it can be ensured that the nozzle is installed in place.

[0014] Optionally, in an embodiment of the present application, the nozzle connecting assembly includes: a fixed assembly and an inner movable part; a first limiting groove is formed on the fixed assembly, and the inner movable part is configured to be movably disposed in the first limiting groove.

[0015] In the above implementation process, since the nozzle connection assembly includes a fixing assembly and an inner movable member, based on the pressure action of the inner movable member, the detachment speed of the nozzle can be increased to further improve the nozzle replacement efficiency.

[0016] Optionally, in the embodiment of the present application, a second limiting groove is formed on the inner groove wall of the first limiting groove, and a second limiting protrusion is arranged on the outer side of the inner movable member; the second limiting protrusion is configured to be movably arranged in the second limiting groove.

[0017] In the above implementation process, the movement range of the inner movable member can be restricted based on the second limiting protrusion and the second limiting groove. Even when the nozzle has been detached from the nozzle connection device, the inner movable member can be restricted within the first limiting groove formed on the fixing assembly.

[0018] Optionally, in the embodiment of the present application, the fixing assembly includes a fixing base and a fixing sleeve; the limiting through hole is specifically formed at one end of the fixing sleeve away from the fixing base; a third limiting groove is formed on the fixing base, and one end of the inner movable member close to the fixing base is configured to be movably arranged in the third limiting groove.

[0019] In the above implementation process, since the fixing assembly includes a fixing base and a fixing sleeve, structural parts such as the fixing base and the fixing sleeve can be produced separately and then assembled into the fixing assembly, which can reduce the production difficulty and cost of the nozzle connection device.

[0020] Optionally, in the embodiment of the present application, the device further includes: a second elastic member, the second elastic member is configured to be arranged on the outer side of the inner movable member, and is specifically arranged between the second limiting groove and the second limiting protrusion.

[0021] In the above implementation process, since the second elastic member is arranged between the second limiting groove and the second limiting protrusion, after the limiting ball disengages from the nozzle limiting groove, the pressure exerted by the second elastic member on the second limiting protrusion can help the nozzle quickly disengage from the installation position, thereby improving the disassembly speed of the nozzle and the nozzle replacement efficiency.

[0022] Optionally, in the embodiment of the present application, a fourth limiting groove is further formed on the outer side of one end of the fixing sleeve away from the fixing base; the fourth limiting groove is specifically formed on the side of the limiting through hole away from the fixing base; the device further includes: a limiting member; the limiting member is configured to be arranged in the fourth limiting groove; the limiting member is configured to cooperate with the inclined groove to restrict the outer movable member outside the first elastic member.

[0023] In the above implementation process, a fourth limiting groove is formed on the outer side of the end of the fixed sleeve away from the fixed seat, and the limiting member is arranged in the fourth limiting groove; furthermore, through the cooperation of the limiting member and the inclined groove, the outer movable member is restricted outside the first elastic member.

[0024] Optionally, in the embodiment of the present application, a nozzle connection groove is formed at the end of the inner movable member away from the fixed seat; when the nozzle connection device is in the nozzle detachment state, the limiting ball is configured to be restricted in the limiting through hole and the inclined groove based on the outer side wall of the nozzle connection groove.

[0025] In the above implementation process, by forming a nozzle connection groove at the end of the inner movable member away from the fixed seat, when the nozzle has been detached from the nozzle connection device, the limiting ball is restricted in the limiting through hole and the inclined groove based on the outer side wall of the nozzle connection groove; the detachment of the limiting ball can be avoided, the installation frequency of the limiting ball can be reduced, and thus the nozzle replacement efficiency can be improved.

[0026] Optionally, in the embodiment of the present application, the device further includes: a first sealing ring; the first sealing ring is configured to be arranged around the laser processing channel formed on the inner movable member at the end of the inner movable member close to the fixed component.

[0027] In the above implementation process, the first sealing ring can improve the sealing performance of the laser processing channel between the inner movable member and the fixed component, so as to improve the stability of laser processing and the quality of laser processing. In addition, improving the sealing performance of the laser processing channel can also ensure the continuous supply of the protective gas during the laser processing process, thereby improving the laser processing efficiency.

[0028] Optionally, in the embodiment of the present application, the device further includes: a second sealing ring; the second sealing ring is configured to be arranged around the laser processing channel formed on the inner movable member at the end of the inner movable member away from the fixed component.

[0029] In the above implementation process, the second sealing ring can improve the sealing performance of the laser processing channel between the inner movable member and the nozzle, so as to improve the stability of laser processing and the quality of laser processing. In addition, improving the sealing performance of the laser processing channel can also ensure the continuous supply of the protective gas during the laser processing process, thereby improving the laser processing efficiency.

[0030] In a second aspect, the embodiment of the present application further provides a nozzle connection system, and the system includes: the nozzle connection device according to any one of the above first aspects and at least one laser processing nozzle;

[0031] At least one nozzle limiting groove is formed on the laser processing nozzle;

[0032] Among them, when the nozzle connecting device is in the nozzle connected state, the limiting ball of the nozzle connecting device is configured to be limited within the limiting through hole of the nozzle connecting device and the nozzle limiting groove opened on the connected laser processing nozzle based on the inner side wall of the third limiting protrusion of the nozzle connecting device.

[0033] The beneficial effects of the present application are as follows: the nozzle connection device comprises a nozzle connection assembly, at least three limiting balls, a first elastic member and an outer movable member; a nozzle installation groove is provided at one end of the nozzle connection assembly, a limiting through hole is provided on the groove wall of the nozzle installation groove, and a first limiting protrusion and an oblique groove are provided on the inner side of the outer movable member; the limiting ball is movably arranged in the limiting through hole, the first elastic member is arranged on the outer side of the nozzle connection assembly, and the outer movable member is arranged on the outer side of the first elastic member. By placing the nozzle to be installed in the nozzle installation groove and pushing the nozzle upward, the outer movable member will squeeze the limiting ball under the action of the downward pressure provided by the first elastic member, so that the limiting ball moves to the nozzle limiting groove provided on the nozzle, thereby realizing the installation operation of the nozzle; by pushing the outer movable member upward, the limiting ball moves toward the direction of the oblique groove after losing the squeezing force of the external movable member, and detaches from the nozzle limiting groove, thereby realizing the disassembly operation of the nozzle. In the process of realizing nozzle disassembly based on the nozzle connection device, the operator does not need to directly touch the nozzle, so there is no need to wait until the nozzle is cooled before replacing it, thereby improving the efficiency of nozzle replacement. The technical problem of low nozzle replacement efficiency is solved.

[0034] In addition, in the existing manual nozzle replacement process, the nozzle installation is mainly achieved by the operator manually tightening the nozzle to be replaced through threaded matching. During the nozzle installation process, it is necessary to first align the threads and tighten them step by step, which is time-consuming, and in the manual tightening process, it is impossible to judge whether the nozzle is installed in place. Based on the nozzle connection device provided by the present application, it is only necessary to place the nozzle to be installed in the nozzle installation groove and push the nozzle upward; under the action of the downward pressure provided by the first elastic member, the external movable member will squeeze the limiting ball, so that the limiting ball moves to the nozzle limiting groove set on the nozzle, so that the nozzle installation operation can be achieved, which reduces the time required for nozzle installation, and further improves the efficiency of nozzle replacement; and through the cooperation of the first elastic member and the limiting ball, it can be ensured that the nozzle is installed in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 The structural schematic diagram of the first nozzle connection device provided by the embodiment of the present application;

[0037] Figure 2 The structural schematic diagram of the second nozzle connection device provided by the embodiment of the present application;

[0038] Figure 3 The structural schematic diagram of the third nozzle connection device provided by the embodiment of the present application;

[0039] Figure 4 The structural schematic diagram of the fourth nozzle connection device provided by the embodiment of the present application.

[0040] Reference signs: 01 - nozzle connection device; 10 - nozzle connection assembly; 1001 - nozzle installation groove; 1002 - limit through hole; 101 - fixing assembly; 1011 - fixing seat; 10110 - limit groove; 1012 - fixing sleeve; 102 - inner movable part; 1021 - second limit protrusion; 20 - limit ball; 30 - first elastic member; 40 - outer movable part; 401 - first limit protrusion; 402 - inclined groove; 50 - second elastic member; 60 - limiting member; 70 - first sealing ring; 80 - second sealing ring. Detailed implementation manners

[0041] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0043] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0044] Please refer to Figure 1 , Figure 1 The structural schematic diagram of the first nozzle connection device 01 provided by the embodiment of the present application. The nozzle connection device 01 includes: a nozzle connection assembly 10, at least three limit balls 20, a first elastic member 30, and an outer movable part 40;

[0045] One end of the nozzle connection assembly 10 is provided with a nozzle installation groove 1001. At least three limiting through holes 1002 are provided on the groove wall of the nozzle installation groove 1001, and the number of the limiting through holes 1002 is greater than or equal to the number of the limiting balls 20;

[0046] The limiting balls 20 are configured to be movably arranged in the limiting through holes 1002;

[0047] The first elastic member 30 is configured to be arranged outside the nozzle connection assembly 10, and the outer movable member 40 is configured to be arranged outside the first elastic member 30;

[0048] The inner side of the outer movable member 40 is provided with a first limiting protrusion 401 and an inclined groove 402. The outer movable member 40 is configured to limit the first elastic member 30 between the nozzle connection assembly 10 and the first limiting protrusion 401 based on the first limiting protrusion 401; the inclined groove 402 is arranged on the side of the first limiting protrusion 401 away from the first elastic member 30.

[0049] Among them, the end of the nozzle connection assembly 10 without the nozzle installation groove 1001 is used to connect with the laser processing head. A laser processing channel communicated with the nozzle installation groove 1001 and having the same opening direction is provided on the nozzle connection assembly 10. The opening width and opening depth of the nozzle installation groove 1001 can be adjusted according to the specific implementation manner of the actually to-be-installed nozzle. The number of the limiting through holes 1002 can be three or more; in the case where the number of the limiting through holes 1002 is more, the opening heights of the more limiting through holes 1002 can be the same or not completely the same. The specific opening position or opening height of the limiting through holes 1002 can be determined according to the opening position of the nozzle limiting groove on the to-be-installed nozzle. In the case where the number of the limiting through holes 1002 is 4, the number of the limiting balls 20 can be 3 or 4. Figure 1 Only one of the limiting balls 20 is exemplarily shown. The aperture of the limiting through hole 1002 is larger than the diameter of the limiting ball 20 so that the limiting ball 20 can be movably placed in the limiting through hole 1002. The first elastic member 30 can be realized by a spring (for example, a helical spring or a gas spring). Figure 1Exemplarily shown is the case where the first elastic member 30 is implemented by a helical spring. In the case where the first elastic member 30 is implemented by a gas spring, a plurality of gas springs can be evenly arranged outside the nozzle connection assembly 10. On the outer side of the outer movable member 40, a stressed portion with protrusions or depressions can be provided to facilitate applying an external force to the outer movable member 40 to reduce the difficulty of pushing the outer movable member 40 upward during disassembly. The first limit protrusion 401 can include an annular protrusion or a plurality of protrusion portions with the same height. The inclined groove 402 can be a wedge-shaped inclined groove (which can be V-shaped, U-shaped, or trapezoidal), or a fan-shaped inclined groove (referring to an inclined groove with a fan-shaped bottom groove surface). Figure 1 Shown is the case where the inclined groove 402 is implemented by a trapezoidal wedge-shaped inclined groove.

[0050] Among them, during the nozzle installation process, the nozzle to be installed needs to be placed in the nozzle installation groove 1001 and pushed upward. Under the action of the downward pressure provided by the first elastic member 30, the outer movable member 40 squeezes the limit ball 20, causing the limit ball 20 to move into the nozzle limit groove provided on the nozzle, thereby realizing the nozzle installation operation. Therefore, when a nozzle is installed on the nozzle connection device 01, a part of the limit ball 20 is placed in the limit through hole 1002, and the other part is placed in the nozzle limit groove provided on the nozzle, and thus a fixed connection between the nozzle and the nozzle connection device 01 is realized based on the limit ball 20. When a nozzle is installed on the nozzle connection device 01, the outer movable member 40 can be pushed upward; after the limit ball 20 loses the squeezing force of the outer movable member 40, it moves in the direction of the inclined groove 402 and disengages from the nozzle limit groove, realizing the nozzle disassembly operation. The inner opening height of the limit through hole 1002 can be higher than the outer opening height (or the inner opening radius is smaller than the outer opening radius), so that after pushing the outer movable member 40 upward to cancel the extrusion of the limit ball 20 by the outer movable member 40, it is convenient for the limit ball 20 to move in the direction of the inclined groove 402.

[0051] It can be seen that the nozzle connecting device 01 provided in the embodiment of the present application includes a nozzle connecting component 10, at least three limiting balls 20, a first elastic member 30 and an external movable member 40; a nozzle mounting groove 1001 is provided at one end of the nozzle connecting component 10, a limiting through hole 1002 is provided on the groove wall of the nozzle mounting groove 1001, and a first limiting protrusion 401 and an inclined groove 402 are provided on the inner side of the external movable member 40; the limiting ball 20 is movably arranged in the limiting through hole 1002, the first elastic member 30 is arranged on the outside of the nozzle connecting component 10, and the external movable member 40 is arranged on the outside of the first elastic member 30. The nozzle to be installed is placed in the nozzle installation groove 1001 and the nozzle is pushed upward, so that the limiting ball 20 moves to the nozzle limiting groove provided on the nozzle under the pressure provided by the first elastic member 30, thereby realizing the installation operation of the nozzle; the outer movable member 40 is pushed upward to offset the pressure provided by the first elastic member 30, so that the limiting ball 20 moves toward the direction of the inclined groove 402 and disengages from the nozzle limiting groove, thereby realizing the disassembly operation of the nozzle. In the process of disassembling the nozzle based on the nozzle connection device 01, the operator does not need to directly touch the nozzle, so there is no need to wait until the nozzle is cooled before replacing it, which improves the efficiency of nozzle replacement. The technical problem of low nozzle replacement efficiency is solved.

[0052] Please refer to Figure 2 , Figure 2 This is a schematic structural diagram of the second nozzle connection device 01 provided in an embodiment of the present application. Figure 2 Specifically shown is a schematic structural diagram of the nozzle connecting device 01 without installing the nozzle or after the nozzle is disassembled.

[0053] In some optional embodiments, the nozzle connection assembly 10 includes: a fixed assembly 101 and an inner movable part 102; a first limiting groove is formed on the fixed assembly 101, and the inner movable part 102 is configured to be movably disposed in the first limiting groove.

[0054] In the process of installing and removing the nozzle, the position of the fixing component 101 is fixed; while the position of the inner movable part 102 will change. The opening direction of the first limit groove is consistent with the setting direction of the laser processing channel. The inner movable part 102 may be partially outside the first limit groove during the movement. Since the nozzle connection component 10 includes the fixing component 101 and the inner movable part 102, based on the pressure of the inner movable part 102, the nozzle drop speed during the nozzle removal process can be increased to further improve the nozzle replacement efficiency.

[0055] In some optional embodiments, the second limiting groove is opened on the inner groove wall of the first limiting groove, and the outer side of the inner movable part 102 is provided with a second limiting protrusion 1021; the second limiting protrusion 1021 is configured to be movably disposed in the second limiting groove.

[0056] Among them, the second limiting protrusion 1021 may include an annular protrusion or may include a plurality of protrusion parts with the same height. The implementation manner of the second limiting groove can be adjusted according to the implementation manner of the second limiting protrusion 1021. Specifically, when the second limiting protrusion 1021 is implemented by an annular protrusion, the second limiting groove can be implemented by an annular groove; when the second limiting protrusion 1021 is implemented by a plurality of protrusion parts with the same height, the second limiting groove can be implemented by an annular groove or by a plurality of groove parts corresponding to the shapes of the protrusion parts. Based on the second limiting protrusion 1021 and the second limiting groove, the movement range of the inner moving part 102 can be restricted. Even when the nozzle has been separated from the nozzle connection device, the inner moving part 102 can be restricted within the first limiting groove opened on the fixed component 101.

[0057] In some alternative embodiments, the fixed component 101 includes a fixed seat 1011 and a fixed sleeve 1012; the limiting through hole 1002 is specifically opened at one end of the fixed sleeve 1012 away from the fixed seat 1011; a third limiting groove 10110 is opened on the fixed seat 1011, and one end of the inner moving part 102 close to the fixed seat 1011 is configured to be movably arranged within the third limiting groove 10110.

[0058] Among them, the opening direction of the third limiting groove 10110 is consistent with the setting direction of the laser processing channel. One end of the inner moving part 102 close to the fixed seat 1011 is movably arranged within the third limiting groove 10110, and the remaining part of the inner moving part 102 is arranged within the fixed sleeve 1012. The third limiting groove 10110 opened on the fixed seat 1011 and the fixed sleeve 1012 together form the above-mentioned first limiting groove. One end of the fixed sleeve 1012 can be fixedly connected to the fixed seat 1011 based on a threaded connection method. Since the fixed component 101 includes the fixed seat 1011 and the fixed sleeve 1012, structural parts such as the fixed seat 1011 and the fixed sleeve 1012 can be produced separately and then assembled into the fixed component 101, reducing the production difficulty of the fixed component 101; thereby reducing the production difficulty and cost of this nozzle connection device.

[0059] In some alternative embodiments, the nozzle connection device 01 further includes: a second elastic member 50, and the second elastic member 50 is configured to be arranged outside the inner moving part 102 and is specifically arranged between the second limiting groove and the second limiting protrusion 1021.

[0060] Among them, the second elastic member 50 can be implemented by a spring (for example, a helical spring or a gas spring). Figure 2Exemplarily shown is the case where the second elastic member 50 is implemented by a helical spring. In the case where the second elastic member 50 is implemented by a gas spring, a plurality of gas springs can be uniformly arranged outside the inner movable member 102. The specific implementation manners of the second elastic member 50 and the first elastic member 30 may be the same or different. Since the second elastic member 50 is arranged between the second limiting groove and the second limiting protrusion 1021, after the limiting ball disengages from the nozzle limiting groove, the pressure applied by the second elastic member 50 to the second limiting protrusion 1021 can help the nozzle quickly disengage from the installation position, thereby improving the nozzle disassembly speed and the nozzle replacement efficiency.

[0061] In some alternative embodiments, a fourth limiting groove is further formed on the outer side of the end of the fixing sleeve 1012 away from the fixing base 1011; specifically, the fourth limiting groove is formed on the side of the limiting through hole 1002 away from the fixing base 1011; the nozzle connection device 01 further includes: a limiting member 60; the limiting member 60 is configured to be arranged in the fourth limiting groove; the limiting member 60 is configured to cooperate with the inclined groove 402 to limit the outer movable member 40 outside the first elastic member 30.

[0062] Wherein, the limiting member 60 can be implemented by an annular snap ring or by a plurality of limiting portions. The fourth limiting groove can be implemented by an annular groove or by a plurality of groove portions corresponding to the shape of the limiting portions. By forming a fourth limiting groove on the outer side of the end of the fixing sleeve 1012 away from the fixing base 1011 and arranging the limiting member 60 in the fourth limiting groove; and then, by the cooperation of the limiting member 60 and the inclined groove 402, the outer movable member 40 is limited outside the first elastic member 30.

[0063] In some alternative embodiments, a nozzle connection groove is formed at the end of the inner movable member 102 away from the fixing base 1011; in the case where the nozzle connection device 01 is in a nozzle disengaged state, the limiting ball 20 is configured to be restricted within the limiting through hole 1002 and the inclined groove 402 based on the outer side wall of the nozzle connection groove.

[0064] Wherein, the nozzle disengaged state refers to the state where the nozzle connection device 01 is not installed with the nozzle. By forming a nozzle connection groove at the end of the inner movable member 102 away from the fixing base 1011, in the case where the nozzle has disengaged from the nozzle connection device 01, the limiting ball 20 is restricted within the limiting through hole 1002 and the inclined groove 402 based on the outer side wall of the nozzle connection groove; the detachment of the limiting ball 20 can be avoided, the installation frequency of the limiting ball 20 can be reduced, and thus the nozzle replacement efficiency is improved. It should be noted that it is also possible to avoid the detachment of the limiting ball 20 by setting the aperture outside the limiting through hole 1002 to be smaller than the diameter of the limiting ball 20 in the case where the nozzle connection device 01 is in a nozzle disengaged state.

[0065] In some alternative embodiments, the nozzle connection device 01 further includes: a first sealing ring 70; the first sealing ring 70 is configured to be disposed around the laser processing channel formed on the inner movable member 102 at one end of the inner movable member 102 close to the fixed component 101.

[0066] Wherein, the manufacturing material of the first sealing ring 70 may include plastics or rubber, etc. The shape of the set first sealing ring 70 may be consistent with the shape of the laser processing channel. By means of the first sealing ring 70, the sealing performance of the laser processing channel between the inner movable member 102 and the fixed component 101 can be improved, so as to improve the stability of laser processing and the quality of laser processing. In addition, improving the sealing performance of the laser processing channel can also ensure the continuous supply of the protective gas during the laser processing process, thereby improving the laser processing efficiency.

[0067] In some alternative embodiments, the nozzle connection device 01 further includes: a second sealing ring 80; the second sealing ring 80 is configured to be disposed around the laser processing channel formed on the inner movable member 102 at one end of the inner movable member 102 away from the fixed component 101.

[0068] Wherein, the manufacturing material of the second sealing ring 80 may include plastics or rubber, etc. The shape of the set second sealing ring 80 may be consistent with the shape of the laser processing channel. By means of the second sealing ring 80, the sealing performance of the laser processing channel between the inner movable member 102 and the nozzle can be improved, so as to improve the stability of laser processing and the quality of laser processing. In addition, improving the sealing performance of the laser processing channel can also ensure the continuous supply of the protective gas during the laser processing process, thereby improving the laser processing efficiency.

[0069] Please refer to Figure 3 、 Figure 4 , Figure 3 which is a schematic structural diagram of the third nozzle connection device provided by the embodiment of the present application, Figure 4 and which is a schematic structural diagram of the fourth nozzle connection device provided by the embodiment of the present application. Figure 3 Specifically shown are the schematic structural diagrams of the nozzle connection device 01 when the nozzle just contacts the inner movable member 102 during the nozzle installation process; and when the nozzle just disengages from the contact with the inner movable member 102 during the nozzle disassembly process. Figure 4 Specifically shown is the schematic structural diagram of the nozzle connection device 01 after the nozzle installation is completed. As Figures 2 - 4As shown, during the installation of the nozzle, the nozzle can be first placed at the corresponding installation position, and then an upward thrust is applied to the nozzle. After the nozzle comes into contact with the inner movable member 102, the second elastic member 50 starts to be compressed under force. After that, the inner movable member 102 and the nozzle move upward simultaneously (in this process, the inner movable member 102 will receive a downward reaction force from the second elastic member 50). Until the nozzle limiting groove provided on the nozzle is pushed to the limiting through hole 1002, the limiting ball 20 will move towards the nozzle limiting groove. Under the action of the force provided by the first elastic member 30, the outer movable member 40 will also push the limiting ball 20 towards the nozzle limiting groove and squeeze the limiting ball 20 with a radial force to fix the position of the nozzle and complete the installation operation of the nozzle. At the same time, the first sealing ring 70 and the second sealing ring 80 are used to improve the sealing performance between the fixing assembly 101 and the inner movable member 102 and between the inner movable member 102 and the nozzle. During the disassembly of the nozzle, the outer movable member 40 is first pushed upward, and the first elastic member 30 is compressed. After the limiting ball 20 loses the squeezing force of the outer movable member 40, it moves towards the direction of the inclined groove 402 to disengage from the nozzle limiting groove. Since the inner movable member 102 still receives a downward reaction force from the second elastic member 50, the inner movable member moves downward, thereby accelerating the detachment speed of the nozzle.

[0070] In some alternative embodiments, a dovetail groove is provided at one end of the inner movable member 102 away from the fixing assembly 101 and is arranged around the laser processing channel; the second sealing ring 80 is specifically configured to be installed in the dovetail groove.

[0071] Among them, by providing a dovetail groove at one end of the inner movable member 102 away from the fixing assembly 101 and arranging the dovetail groove around the laser processing channel and installing the second sealing ring 80 in the dovetail groove, the probability of the second sealing ring 80 falling off during the nozzle replacement process can be greatly reduced; thereby further improving the nozzle replacement efficiency.

[0072] The embodiment of the present application further provides a nozzle connection system, including: the nozzle connection device 01 as described in any item of the first aspect above and at least one laser processing nozzle;

[0073] At least one nozzle limiting groove is provided on the laser processing nozzle;

[0074] Among them, when the nozzle connection device 01 is in the nozzle connection state, the limiting ball of the nozzle connection device is configured to be restricted in the limiting through hole of the nozzle connection device 01 and the nozzle limiting groove provided on the connected laser processing nozzle based on the inner side wall of the third limiting protrusion of the nozzle connection device 01.

[0075] Among them, the number of laser processing nozzles can be one or more. The nozzle connection state refers to the state in which the nozzle connection device 01 is connected with a laser processing nozzle. The nozzle limiting groove can be implemented by a multi-sided hemispherical or trapezoidal groove, and the present application does not make specific limitations thereon.

[0076] It should be understood that this nozzle connection system corresponds to the above-described embodiment of the nozzle connection device 01. The specific implementation manner of this nozzle connection system can be referred to the description above. To avoid repetition, the detailed description is appropriately omitted here.

[0077] In several embodiments provided by the embodiments of the present application, it should be understood that the disclosed device / system can also be implemented in other ways. The device embodiments described above are only illustrative. For example, the flowcharts and block diagrams in the drawings show the possible architectures, functions, and operations of the devices according to multiple embodiments of the embodiments of the present application. In this regard, each block in the flowchart or block diagram can represent a module or a part of a module. It should also be noted that each block in the block diagram and / or flowchart, as well as the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0078] In addition, in each embodiment of the embodiments of the present application, each functional module can be integrated together to form an independent part, or each module can exist alone, or two or more modules can be integrated to form an independent part.

[0079] The above description is only an alternative implementation manner of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the embodiments of the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the embodiments of the present application.

Claims

1. A nozzle connection device, characterized in that, The nozzle connection device includes: a nozzle connection assembly, at least three limiting balls, a first elastic member, and an outer movable member; One end of the nozzle connection assembly is provided with a nozzle installation groove, and at least three limiting through holes are provided on the groove wall of the nozzle installation groove, and the number of the limiting through holes is greater than or equal to the number of the limiting balls; The limiting balls are configured to be movably arranged in the limiting through holes; The first elastic member is configured to be arranged outside the nozzle connection assembly, and the outer movable member is configured to be arranged outside the first elastic member; The inner side of the outer movable member is provided with a first limiting protrusion and an inclined groove, and the outer movable member is configured to limit the first elastic member between the nozzle connection assembly and the first limiting protrusion based on the first limiting protrusion; the inclined groove is arranged on a side of the first limiting protrusion away from the first elastic member.

2. The device according to claim 1, characterized in that Wherein, The nozzle connection assembly includes: a fixing assembly and an inner movable member; A first limiting groove is provided on the fixing assembly, and the inner movable member is configured to be movably arranged in the first limiting groove.

3. The device according to claim 2, characterized in that, Wherein, A second limiting groove is provided on the inner groove wall of the first limiting groove, and a second limiting protrusion is provided on the outer side of the inner movable member; the second limiting protrusion is configured to be movably arranged in the second limiting groove.

4. The device according to claim 3, characterized in that, Wherein, The fixing assembly includes a fixing base and a fixing sleeve; the limiting through holes are specifically provided at one end of the fixing sleeve away from the fixing base; A third limiting groove is provided on the fixing base, and one end of the inner movable member close to the fixing base is configured to be movably arranged in the third limiting groove.

5. The device according to claim 4, characterized in that, The device further includes: a second elastic member, and the second elastic member is configured to be arranged outside the inner movable member, and is specifically arranged between the second limiting groove and the second limiting protrusion.

6. The device according to claim 4, wherein Wherein, A fourth limiting groove is further provided on the outer side of one end of the fixing sleeve away from the fixing base; the fourth limiting groove is specifically provided on a side of the limiting through hole away from the fixing base; The device further includes: a limiting member; the limiting member is configured to be arranged in the fourth limiting groove; the limiting member is configured to cooperate with the inclined groove to limit the outer movable member outside the first elastic member.

7. The device according to claim 4, wherein Wherein, One end of the inner movable member away from the fixing base is provided with a nozzle connection groove; In a case where the nozzle connection device is in a nozzle detachment state, the limiting balls are configured to be limited in the limiting through holes and the inclined groove based on the outer side wall of the nozzle connection groove.

8. The device according to any one of claims 2-7, characterized in that The device further includes: a first sealing ring; the first sealing ring is configured to be arranged around a laser processing channel provided on the inner movable member at one end of the inner movable member close to the fixing assembly.

9. The device according to any one of claims 2-7, characterized in that, The device further includes: a second sealing ring; the second sealing ring is configured to be arranged around a laser processing channel provided on the inner movable member at one end of the inner movable member away from the fixing assembly.

10. A nozzle connection system, characterized in that, The system includes: the nozzle connection device according to any one of claims 1-9 above and at least one laser processing nozzle; At least one nozzle limiting groove is provided on the laser processing nozzle; Wherein, when the nozzle connection device is in a nozzle connection state, the limit ball of the nozzle connection device is configured to be restricted within the limit through-hole of the nozzle connection device and the nozzle limit groove formed on the connected laser processing nozzle based on the inner sidewall of the third limit protrusion of the nozzle connection device.

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