Cutting nozzle structure and cutting device

Abstract

The utility model relates to the technical field of machining, and discloses a cutting nozzle structure and a cutting device. The capacitance heightening assembly comprises an insulating ring body, a heightening plate and a detection part, the insulating ring body is connected with the bottom of the main seat body, the heightening plate is connected to one end, far away from the main seat body, of the insulating ring body, and the detection part penetrates from the main seat body, extends to the insulating ring body and is electrically connected with the heightening plate; the cutting torch main body is arranged in inner side via holes of the main seat body, the insulating ring body and the height adjusting plate in a penetrating manner; the cooling unit is arranged on the outer side of the insulating ring body in a surrounding mode, abuts against the height adjusting plate and is internally provided with a cooling cavity, and the cooling unit is further provided with a flow inlet and a flow outlet which are communicated with the cooling cavity and are suitable for leading in and leading out cooling fluid respectively. The cooling cavity is filled with the cooling fluid, heat of the height adjusting plate can be absorbed, the temperature rise of the height adjusting plate due to heat radiation of the cutting plate face is avoided, the accuracy of the measured distance result is guaranteed, and the subsequent cutting stability is prevented from being affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, concretely relates to a cutting nozzle structure and cutting device. BACKGROUND

[0002] At present, laser cutting technology is widely used in the field of mechanical manufacturing, automobile and aerospace, it takes high energy density laser beam as heat source, can cut thin plate metal material with faster cutting speed, has great advantage in cutting quality, cutting seam size and cutting precision, besides, in order to make up for the cutting disadvantage of laser cutting in thick plate metal material, in practice, flame high temperature cutting technology can also be combined, forms the composite cutting technology with wider application range.

[0003] In the composite cutting technology, the distance between the cutting nozzle and the cutting plate is usually measured indirectly according to the capacitance value formed between the height adjusting plate on the cutting nozzle and the cutting plate, but during the cutting process, the height adjusting plate is heated by the heat radiation of the cutting plate, which causes the capacitance value to change, and then affects the measured distance result and the stability of subsequent cutting. SUMMARY

[0004] Therefore, the utility model provides a cutting nozzle structure and cutting device to solve the problem that the distance measurement result of the cutting device in the prior art is easily affected by high temperature and reduces the stability of cutting.

[0005] In the first aspect, the utility model provides a cutting nozzle structure, which comprises a main seat body, a capacitance height adjusting assembly, a cutting nozzle body and a cooling unit, wherein the capacitance height adjusting assembly comprises an insulating ring body, a height adjusting plate and a detection part, the insulating ring body is connected with the bottom of the main seat body, the height adjusting plate is connected and arranged at one end of the insulating ring body away from the main seat body, the detection part penetrates from the main seat body and extends to the insulating ring body and is electrically connected with the height adjusting plate, the cutting nozzle body is arranged in the inner side via hole of the main seat body, the insulating ring body and the height adjusting plate, the cooling unit is arranged outside the insulating ring body and abuts against the height adjusting plate, and the cooling unit is internally provided with a cooling cavity, the cooling unit is further provided with an inlet and an outlet which are communicated with the cooling cavity and are suitable for respectively introducing and discharging cooling fluid.

[0006] Beneficial effects:

[0007] The cooling unit with the cooling cavity is arranged outside the insulating ring body, the cooling cavity can be filled with cooling fluid, can absorb the heat of the insulating ring body and the height adjusting plate adjacent to the cooling unit, reduces the temperature of the height adjusting plate, avoids the temperature rise of the height adjusting plate due to the heat radiation of the cutting plate, and the change of the measured value caused by the detection part, ensures the accuracy of the measured distance result and avoids affecting the stability of subsequent cutting.

[0008] In addition, the cooling cavity is communicated with an inflow port and an outflow port, and the cooling fluid can be selectively introduced into and discharged from the cooling cavity, the flow of the cooling fluid can continuously and stably take away the heat of the height adjustment plate, balance the heat absorption of the heat radiation received by the height adjustment plate, and ensure the constant temperature of the height adjustment plate.

[0009] In an alternative embodiment, the cooling unit comprises: an inner ring portion sleeved on the insulating ring body and internally provided with the cooling cavity, the inflow port and the outflow port being adjacently arranged along the circumferential direction of the inner ring portion; and a partitioning piece arranged in the cavity of the cooling cavity and correspondingly arranged between the adjacent inflow port and outflow port, and adapted to partition the cooling cavity.

[0010] Advantages:

[0011] Along the circumferential direction of the inner ring portion, the arc segment between the inflow port and the outflow port is divided into a long arc segment and a short arc segment. The inflow port and the outflow port are adjacently arranged, and the partitioning piece is arranged between the adjacent inflow port and outflow port in the circumferential direction, i.e., the partitioning piece is arranged on the short arc side, and the length of the short arc segment is approximately zero, and the length of the long arc side is approximately the entire inner ring portion. After the cooling fluid flows into the inflow port and out of the outflow port, it can approximately flow through the entire cooling cavity of the inner ring portion, and flow in one direction, thereby ensuring cooling and temperature reduction of the entire inner ring portion, avoiding the occurrence of branch flow between the inflow port and the outflow port, and further avoiding the problems of resistance and turbulence caused by the branch structure facing the cooling fluid, and improving the flow efficiency of the cooling fluid.

[0012] In an alternative embodiment, the cutting nozzle structure further comprises: a first insulating layer, which is arranged between the cooling unit and the insulating ring body along the axial direction of the cutting nozzle body.

[0013] Advantages:

[0014] The arrangement of the first insulating layer can avoid the electrical contact between the cooling unit and the detection portion of the insulating ring body extending towards the height adjustment plate, and affect the accuracy of detection. At the same time, the first insulating layer can serve as a cushioning structure to prevent loosening and insulation, and ensure the stability of the contact between the third insulating piece and the cooling unit.

[0015] In an alternative embodiment, the cutting nozzle structure further comprises: a second insulating layer, which is arranged between the cooling unit and the insulating ring body along the radial direction of the cutting nozzle body; and a plurality of sealing grooves are correspondingly arranged on the side of the insulating ring body facing the cooling unit, and a sealing ring is correspondingly arranged in each sealing groove, and the second insulating layer is arranged between the sealing ring and the sealing groove.

[0016] Advantages:

[0017] The second insulation layer is arranged on the basis of the first insulation layer, which can separate the cooling unit and the insulation ring body in multiple directions such as the axial direction and the radial direction, further improves the accuracy of detection, and both can play the effect of preventing insulation as a cushion structure, in combination with the arrangement of the sealing ring and the sealing groove, avoids the cooling unit from falling off, and improves the stability of the connection between the cooling unit and the insulation ring body.

[0018] In an alternative embodiment, the cutting nozzle structure further comprises: a third insulation member arranged between the cooling unit and the height adjustment plate, respectively abutting the cooling unit and the height adjustment plate along the nozzle body axial direction; and a third insulation fitting member detachably connecting the third insulation member to the height adjustment plate, so that one end of the third insulation member away from the height adjustment plate abuts the cooling unit.

[0019] In an alternative embodiment, the cutting nozzle structure further comprises: a circumferential limiting member correspondingly sleeved on the radial outer side of the insulation ring body and the main seat body, and detachably limiting connected with both.

[0020] In an alternative embodiment, the insulation ring body comprises: a first sub-ring limiting connected with the main seat body under the action of the circumferential limiting member; and a second sub-ring detachably limiting connected with the first sub-ring away from the main seat body.

[0021] In an alternative embodiment, the cutting nozzle structure further comprises: a nozzle locking member correspondingly arranged on the inner side of the insulation ring body, at least partially inserted between the nozzle body and the main seat body, and detachably limiting connected with both, and the end of the nozzle locking member is arranged between the end of the first sub-ring and the end of the second sub-ring along the nozzle body axial direction away from the main seat body, or the end of the nozzle locking member exceeds the end of the second sub-ring.

[0022] Advantages:

[0023] The nozzle locking member is used to limit the nozzle body on the main seat body, and when the end of the nozzle locking member is arranged between the end of the first sub-ring and the end of the second sub-ring along the nozzle body axial direction away from the main seat body, the axial length of the nozzle locking member is not too long to exceed the second sub-ring, which avoids affecting the installation of the height adjustment plate, reduces the structural cost of the nozzle locking member, and the nozzle locking member is installed first, and then the first sub-ring and the second sub-ring are installed correspondingly.

[0024] When the end of the cutting nozzle locking piece exceeds the end of the second split ring in the axial direction away from the main body of the cutting nozzle body, the axial length of the cutting nozzle locking piece is sufficient to allow the end to be exposed after the second split ring is installed, which facilitates installation personnel to operate and reduces the difficulty of installation. When installing, the cutting nozzle locking piece can be correspondingly threaded through the gap between the inner sides of the first split ring and the second split ring after the insulating ring body is installed.

[0025] In an alternative embodiment, the height adjustment plate is at least partially disposed between the second split ring and the cutting nozzle body and is detachably connected to both.

[0026] In a second aspect, the utility model also provides a cutting device which comprises the cutting nozzle structure. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0028] Figure 1 It is a front view structural schematic diagram of a cutting nozzle structure of the utility model embodiment.

[0029] Figure 2 It is a front view structural schematic diagram of a cutting nozzle structure of the utility model embodiment. Figure 1 It is a perspective view of the cutting nozzle structure shown in the figure.

[0030] Figure 3 It is a perspective view of the cutting nozzle structure shown in the figure. Figure 1 It is a sectional view of the cutting nozzle structure.

[0031] Figure 4 It is an enlarged schematic diagram of A part of the cutting nozzle structure. Figure 3

[0032] Figure 5 It is an enlarged schematic diagram of B part of the cutting nozzle structure. Figure 3

[0033] Figure 6 It is a top view schematic diagram of the cutting nozzle structure shown in the figure. Figure 1

[0034] Legend of reference signs:

[0035] ​​​1, main seat body; 11, circumferential limiting piece; 2, insulating ring body; 21, first sub-ring; 22, second sub-ring; 23, sealing groove; 24, sealing ring; 3, height adjustment plate; 4, detection part; 41, wire joint; 42, wire piece; 43, probe; 5, cutting nozzle main body; 51, cutting nozzle locking piece; 6, cooling unit; 61, inner ring part; 62, cooling cavity; 63, inlet; 64, outlet; 65, partition; 7, first insulating layer; 8, second insulating layer; 9, third insulating piece; 10, third insulating matching piece. DETAILED DESCRIPTION

[0036] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments but not all embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0037] At present, laser cutting technology is widely used in mechanical manufacturing, automobile and aerospace fields. It uses high-energy density laser beam as heat source and can cut thin plate metal materials at a faster cutting speed. It has great advantages in cutting quality, cutting seam size and cutting precision. In addition, in order to make up for the cutting disadvantage of laser cutting in thick plate metal materials, flame high-temperature cutting technology can be combined in practice to form a composite cutting technology with wider application range.

[0038] In the composite cutting technology, the distance between the cutting nozzle and the cutting plate surface is usually indirectly measured according to the measured capacitance value between the height adjustment plate 3 on the cutting nozzle and the cutting plate surface. However, during the cutting process, the height adjustment plate 3 is heated by the heat radiation of the cutting plate surface, which causes the measured capacitance value to change, thereby affecting the measured distance result and the stability of subsequent cutting.

[0039] Therefore, the embodiments of the present application provide a cutting nozzle structure and a cutting device to solve the problem that the distance measurement result of the cutting device in the prior art is easily affected by high temperature and the stability of cutting is reduced.

[0040] The embodiments of the present application will be described below with reference to the accompanying drawings. Figures 1 to 6

[0041] In a first aspect, the present application provides a cutting nozzle structure, which comprises a main seat body 1, a capacitance height adjustment assembly, a cutting nozzle main body 5 and a cooling unit 6.

[0042] ​The middle part of the main seat body 1 is provided with a main hole for accommodating the cutting nozzle body 5, and a side hole for the detection part 4 of the capacitance adjusting assembly, and an air inlet channel for the cutting gas to pass into the cutting nozzle body 5, etc. can also be provided according to the needs. Figure 3 As described above, the upper side of the main seat body 1 is the top of the main seat body 1, and the lower side is the bottom of the main seat body 1. The extension direction of the main hole is the same as the extension direction of the cutting nozzle body 5, and is correspondingly arranged as the axial direction of the main seat body 1 and the cutting nozzle body 5.

[0043] The capacitance adjusting assembly includes an insulating ring body 2, an adjusting plate 3, and a detection part 4.

[0044] The top surface of the insulating ring body 2 is connected to the bottom of the main seat body 1, preferably detachably connected, and the axis of the cutting nozzle body 5 and the main hole passes through the inner ring hole of the insulating ring body 2, preferably coaxially arranged with the cutting nozzle body 5. As a transformable embodiment, it can also be arranged off-axis. The material of the insulating ring body 2 can be selected according to the insulating property, material strength, etc. In this embodiment, it is preferably insulating ceramic.

[0045] The adjusting plate 3 is connected and arranged at one end of the insulating ring body 2 away from the main seat body 1, preferably detachably connected and arranged, and in the working process, it is close to the cutting plate surface. In this embodiment, an opening is provided on it to accommodate part of the cutting nozzle body 5, preferably coaxially arranged with the cutting nozzle body 5, and the axial end of the cutting nozzle body 5 away from the main seat body 1 does not exceed the opening.

[0046] The detection part 4 penetrates from the side hole of the main seat body 1 and extends to the insulating ring body 2, and is electrically connected with the adjusting plate 3. In this embodiment, the detection part 4 penetrates the insulating ring body 2. It can be understood that it can also be wrapped with an insulating layer and correspondingly arranged outside the insulating ring body 2. Specifically, the detection part 4 includes a wire joint 41 exposed to the side hole of the main seat body 1, a wire part 42 extending into the side hole, and a probe 43 penetrating the insulating ring body 2, Figure 3 The part of the probe 43 penetrating the insulating ring body 2 is not shown.

[0047] The main hole of the main seat body 1, the inner ring hole of the insulating ring body 2, and the opening of the adjusting plate 3 correspond to the inner side via holes of the three, and the cutting nozzle body 5 is arranged in the inner side via holes of the three. In this embodiment, the axial ends thereof do not exceed the inner side via holes of the three, and it can be understood that the axial length thereof can also be adjusted according to the needs. As a transformable embodiment, at least one axial end of the cutting nozzle body 5 penetrates the inner side via holes of the three.

[0048] The cooling unit 6 is arranged outside the insulating ring body 2 and abuts against the height-adjusting plate 3. In this embodiment, the abutment is indirect through other matching structures. As a changeable embodiment, the cooling unit 6 can directly abut against the height-adjusting plate 3. As another changeable embodiment, the cooling unit 6 can extend and be arranged outside at least part of the height-adjusting plate 3. The cooling unit 6 is internally provided with a cooling cavity 62 and is further provided with an inflow port 63 and an outflow port 64 which are in communication with the cooling cavity 62. The inflow port 63 is adapted to pass in cooling fluid, and the outflow port 64 is adapted to lead out cooling fluid. The cooling fluid can be special cooling liquid, water, special cooling gas or air, etc.

[0049] The cooling unit 6 with the cooling cavity 62 is arranged outside the insulating ring body 2. The cooling cavity 62 can be filled with cooling fluid, can absorb the heat of the insulating ring body 2 and the height-adjusting plate 3 adjacent to the cooling unit 6, can reduce the temperature of the height-adjusting plate 3, can avoid the temperature rise of the height-adjusting plate 3 due to the heat radiation of the cutting plate surface, can avoid the change of the measured value caused by the detection part 4, can ensure the accuracy of the measured distance result, and can avoid affecting the stability of subsequent cutting.

[0050] In addition, the cooling cavity 62 is in communication with the inflow port 63 and the outflow port 64. The inflow and outflow of the cooling fluid into and out of the cooling cavity 62 can be selected to be continuous. The flow of the cooling fluid can continuously and stably take away the heat of the height-adjusting plate 3, can balance the heat absorption of the heat radiation of the height-adjusting plate 3, and can ensure the constant temperature of the height-adjusting plate 3.

[0051] The cooling unit 6 comprises an inner ring part 61 and a partition 65.

[0052] The inner ring part 61 is annularly sleeved outside the insulating ring body 2 and is internally provided with the cooling cavity 62. The cooling cavity 62 is correspondingly arranged in a ring shape. The inflow port 63 and the outflow port 64 are adjacently arranged along the circumference of the inner ring part 61. The inner ring part 61 can be formed by sealingly nesting a ring sleeve and a ring groove or can be integrally formed.

[0053] The partition 65 is arranged in the cavity of the cooling cavity 62 and is correspondingly arranged between the adjacent inflow port 63 and outflow port 64, and is adapted to completely separate the cooling cavity 62. It can be understood that the partition 65 can also be arranged to be detachably connected with the cooling cavity 62. In this embodiment, the cross section of the partition 65 completely fills the cross section inner hole of the corresponding cooling cavity 62. Preferably, the inner diameter of the cooling cavity 62 gradually decreases towards the position of the partition 65. It can be understood that the inner wall thickness of the partition 65 can also gradually decrease. Figure 3 and Figure 4 The left part of the inner ring part 61 of the partition 65 is not shown.

[0054] The arc segment between the inflow port 63 and the outflow port 64 along the circumference of the inner ring part 61 is divided into a long arc segment and a short arc segment. The inflow port 63 and the outflow port 64 are arranged adjacent to each other, and a partition 65 is arranged between the adjacent inflow port 63 and outflow port 64 in the circumferential direction, that is, the partition 65 is arranged on the short arc side, and the length of the short arc segment is approximately zero, and the length of the long arc side is approximately the entire length of the inner ring part 61. After the cooling fluid flows into the inflow port 63 and out of the outflow port 64, it can approximately flow through the entire cooling cavity 62 of the inner ring part 61, and is a unidirectional flow. While ensuring cooling of the entire inner ring part 61, it avoids the occurrence of branch flow between the inflow port 63 and the outflow port 64, thereby avoiding the problem of resistance and turbulence caused by the branch structure facing the cooling fluid, and improving the flow efficiency of the cooling fluid.

[0055] As a transformable embodiment, the partition 65 can also be a notch of the inner ring part 61. As another transformable embodiment, the partition 65 can not be provided or only partially block the cooling cavity 62. As another transformable embodiment, the inflow port 63 and the outflow port 64 can be arranged non-adjacent.

[0056] In the embodiment, the cutting nozzle structure further comprises a first insulation layer 7, which is arranged between the cooling unit 6 and the insulation ring body 2 along the axial direction of the cutting nozzle body 5. The first insulation layer 7 is preferably an elastic insulation pad, which can be provided with a sealing layer in the axial direction as needed, or can be a hard insulation pad.

[0057] The provision of the first insulation layer 7 can avoid the cooling unit 6 from electrically contacting the detection part 4 extending from the insulation ring body 2 towards the height adjustment plate 3, thereby affecting the accuracy of detection. At the same time, the first insulation layer 7 can serve as a cushioning layer to prevent loosening and ensure the stability of the contact between the third insulation part 9 and the cooling unit 6. When the first insulation layer 7 is an elastic insulation pad, it can also serve as a buffer to further improve the loosening prevention effect.

[0058] The cutting nozzle structure further comprises a second insulation layer 8, which is arranged between the cooling unit 6 and the insulation ring body 2 along the radial direction of the cutting nozzle body 5. In addition, a reserved gap for arranging the second insulation layer 8 is provided between the cooling unit 6 and the insulation ring body 2. In the embodiment, the second insulation layer 8 and the first insulation layer 7 are separately arranged, and as a transformable embodiment, the two can be integrally arranged.

[0059] Preferably, the side of the insulation ring body 2 facing the cooling unit 6 is provided with a plurality of sealing grooves 23, and the sealing grooves 23 are correspondingly provided with sealing rings 24, and the second insulation layer 8 is clamped between the sealing ring 24 and the sealing groove 23. As a transformable embodiment, the second insulation layer 8 can be arranged between the sealing ring 24 and the cooling unit 6.

[0060] The second insulation layer 8 is arranged on the basis of the first insulation layer 7, so that the cooling unit 6 and the insulation ring body 2 are separated in multiple directions such as the axial direction and the radial direction, the accuracy of detection is further improved, and the two can also play the effect of preventing insulation as a cushion structure, in combination with the arrangement of the sealing ring 24 and the sealing groove 23, the cooling unit is prevented from falling off, and the stability of the connection between the cooling unit 6 and the insulation ring body 2 is improved.

[0061] In the embodiment, the cutting nozzle structure further comprises a third insulation part 9 and a third insulation matching part 10.

[0062] The third insulation part 9 is arranged between the cooling unit 6 and the height adjustment plate 3, and abuts against the cooling unit 6 and the height adjustment plate 3 along the axial direction of the cutting nozzle body 5. The third insulation matching part 10 is detachably connected to the third insulation part 9 on the height adjustment plate 3, so that the end of the third insulation part 9 away from the height adjustment plate 3 abuts against the cooling unit 6. Preferably, the third insulation part 9 is an insulation locking nut, and the third insulation matching part 10 is correspondingly arranged as a loosening screw.

[0063] The third insulation part 9 and the third insulation matching part 10 are arranged as matching structures to abut against the cooling unit 6 and the height adjustment plate 3 respectively, so as to enhance the tightness of the indirect abutment between the cooling unit 6 and the height adjustment plate 3, and at the same time, the insulation structure separates the cooling unit 6 and the height adjustment plate 3 to avoid affecting the normal work of the detection part 4. Preferably, the cooling unit 6, the third insulation part 9 and the third insulation matching part 10 can also be arranged as heat-conducting insulation parts with relatively high thermal conductivity, such as metal surface oxidation treatment or metal surface spraying treatment, so as to improve the heat dissipation efficiency of the cooling unit 6 on the height adjustment plate 3.

[0064] In addition, the cutting nozzle structure further comprises a circumferential limiting part 11, which is correspondingly arranged on the radial outer side of the insulation ring body 2 and the main seat body 1, and is detachably limited and connected with the two, preferably, the circumferential limiting part 11 is a fixed nut, and the outer wall of the main seat body 1 and the insulation ring body 2 is provided with an outer thread corresponding to the fixed nut.

[0065] As a transformable embodiment, the circumferential limiting part 11 can also be a clamping limiting structure such as a clamping jaw. As another transformable embodiment, the circumferential limiting part 11 can be integrally arranged with the insulation ring body 2.

[0066] The insulation ring body 2 comprises a first sub-ring 21 and a second sub-ring 22.

[0067] The first sub-ring 21 is limited and connected with the main seat body 1 under the action of the circumferential limiting part 11, specifically, the top surface of the first sub-ring 21 abuts against the main seat body 1, and the outer circumferential wall thereof is correspondingly provided with an outer thread or other matching structure for limiting connection with the circumferential limiting part 11, such as a clamping hole.

[0068] The second sub-ring 22 is connected with the first sub-ring 21 at a side away from the main body 1, preferably by screwing, and as an alternative, the second sub-ring 22 can be arranged in the gap between the first sub-ring 21 and the main body 1 and connected with the outer wall of the main body 1 at the corresponding gap position.

[0069] The separation of the first sub-ring 21 and the second sub-ring 22 reduces the difficulty of processing the single piece of the insulation ring body 2, and the first sub-ring 21 and the second sub-ring 22 can be made of different materials, and space can be provided for other structures inside the insulation ring body 2.

[0070] The cutting nozzle structure further comprises a nozzle locking member 51 arranged inside the insulation ring body 2, at least partially inserted between the nozzle body 5 and the main body 1, and detachably connected with both, preferably by screwing, and the end of the nozzle locking member 51 is arranged between the end of the first sub-ring 21 and the end of the second sub-ring 22, or the end of the nozzle locking member 51 exceeds the end of the second sub-ring 22 along the axial direction of the nozzle body 5 away from the main body 1.

[0071] In this embodiment, the nozzle locking member 51 is used to limit the nozzle body 5 on the main body 1, and the end of the nozzle locking member 51 is arranged between the end of the first sub-ring 21 and the end of the second sub-ring 22 along the axial direction of the nozzle body 5 away from the main body 1, so that the axial length of the nozzle locking member 51 is not too long to exceed the second sub-ring 22, avoiding affecting the installation of the height adjustment plate 3, reducing the structural cost of the nozzle locking member 51, and during installation, the nozzle locking member 51 is installed first, and then the first sub-ring 21 and the second sub-ring 22 are installed correspondingly.

[0072] As an alternative, the end of the nozzle locking member exceeds the end of the second sub-ring along the axial direction of the nozzle body away from the main body, specifically, the inner diameter of the end of the second sub-ring is greater than the outer diameter of the end of the nozzle locking member. In addition, since the first sub-ring 21 and the second sub-ring 22 are a whole piece connected with each other, the axial length of the nozzle locking member 51 is sufficient to make its end exposed after the second sub-ring 22 is installed, which facilitates the operation of the installer and reduces the installation difficulty. During installation, the nozzle locking member 51 can be correspondingly arranged in the gap between the first sub-ring 21 and the second sub-ring 22 after the insulation ring body 2 is installed.

[0073] In addition, in the embodiment, the height adjustment plate 3 is provided with a ring protrusion towards the inner side of the cutting nozzle body 5, is arranged between the second split ring 22 and the cutting nozzle body 5, is spaced apart from the cutting nozzle body 5, and is detachably limited and connected with the second split ring 22, preferably threaded cooperation. As a convertible embodiment, when the end of the cutting nozzle locking piece 51 exceeds the end of the second split ring 22, one end of the height adjustment plate 3 towards the cutting nozzle body 5 can be provided with a ring groove to accommodate the end of the cutting nozzle locking piece 51.

[0074] In a second aspect, the utility model also provides a cutting device, specifically can be laser cutting processing head, laser cutting machine or laser cutting system etc., including above-mentioned cutting nozzle structure.

[0075] Although the embodiments of the utility model are described in combination with the drawings, those skilled in the art can make various modifications and changes without departing from the spirit and scope of the utility model, and such modifications and changes all fall within the scope defined by the appended claims.

Claims

1. A cutting nozzle structure, characterized by, The utility model relates to a cutting nozzle, comprising: a main body (1); a capacitance height adjustment assembly, comprising an insulating ring body (2), a height adjustment plate (3) and a detection part (4), the insulating ring body (2) is connected with the bottom of the main body (1), the height adjustment plate (3) is connected and arranged at one end of the insulating ring body (2) away from the main body (1), the detection part (4) penetrates from the main body (1) and extends to the insulating ring body (2) and is electrically connected with the height adjustment plate (3); a cutting nozzle body (5) is arranged in the inner hole of the main body (1), the insulating ring body (2) and the height adjustment plate (3); a cooling unit (6) is arranged outside the insulating ring body (2) and abuts against the height adjustment plate (3), and a cooling cavity (62) is arranged in the cooling unit (6), and the cooling unit (6) is further provided with an inlet (63) and an outlet (64) communicated with the cooling cavity (62), which are suitable for respectively introducing and discharging cooling fluid.

2. The cutting nozzle structure of claim 1, wherein The cooling unit (6) comprises: an inner ring part (61) is sleeved on the insulating ring body (2), and the cooling cavity (62) is arranged in the inner ring part (61), and the inlet (63) and the outlet (64) are arranged adjacent to each other along the circumference of the inner ring part (61); a partition (65) is arranged in the cavity of the cooling cavity (62) and is arranged between the adjacent inlet (63) and outlet (64), and is suitable for partitioning the cooling cavity (62).

3. The cutting nozzle structure according to claim 1 or 2, characterized in that, Further comprising: a first insulating layer (7) is arranged between the cooling unit (6) and the insulating ring body (2) along the axial direction of the cutting nozzle body (5).

4. The cutting nozzle structure of claim 3, wherein Further comprising: a second insulating layer (8) is arranged between the cooling unit (6) and the insulating ring body (2) along the radial direction of the cutting nozzle body (5); a plurality of sealing grooves (23) are arranged on the side of the insulating ring body (2) facing the cooling unit (6), and a sealing ring (24) is arranged in each sealing groove (23), and the second insulating layer (8) is arranged between the sealing ring (24) and the sealing groove (23).

5. The cutting nozzle structure of claim 4, wherein Further comprising: a third insulating part (9) is arranged between the cooling unit (6) and the height adjustment plate (3) and abuts against the cooling unit (6) and the height adjustment plate (3) along the axial direction of the cutting nozzle body (5); a third insulating matching part (10) is detachably connected to the height adjustment plate (3) and the third insulating part (9), so that one end of the third insulating part (9) away from the height adjustment plate (3) abuts against the cooling unit (6).

6. The cutting nozzle structure of any of claims 1-2, 4-5, wherein, Further comprising: a circumferential limiting part (11) is sleeved on the radial outer side of the insulating ring body (2) and the main body (1) and is detachably limitedly connected with them.

7. The cutting nozzle structure of claim 6, wherein The insulating ring body (2) comprises: a first sub-ring (21) is limitedly connected with the main body (1) under the action of the circumferential limiting part (11); a second sub-ring (22) is limitedly connected with the first sub-ring (21) on the side away from the main body (1).

8. The cutting nozzle structure of claim 7, wherein, Further comprising: The cutting nozzle locking piece (51) is arranged on the inner side of the insulating ring body (2), is at least partially inserted between the cutting nozzle body (5) and the main seat body (1), and is detachably limited and connected with the two. The end of the cutting nozzle locking piece (51) is arranged between the end of the first sub-ring (21) and the end of the second sub-ring (22), or the end of the cutting nozzle locking piece (51) exceeds the end of the second sub-ring (22).

9. A cutting nozzle structure according to claim 7 or 8, characterized in that The height-adjusting plate (3) is at least partially arranged between the second sub-ring (22) and the cutting nozzle body (5) and is detachably limited and connected with the second sub-ring (22).

10. A cutting device characterized by, The cutting nozzle structure according to any one of claims 1-9. The cutting nozzle structure according to any one of claims 1-9.

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