Nozzle and laser cutting machine

Abstract

The utility model belongs to the technical field of laser cutting equipment, and discloses a nozzle and a laser cutting machine, the nozzle comprises a main body, and the center of the main body is provided with a laser hole for a laser beam to pass through. The main body comprises a bearing cavity and a cooling flow channel, the cooling flow channel is close to the bearing cavity, the bearing cavity is located between the laser hole and the cooling flow channel, the bearing cavity is used for installing a height measuring sensor, and a cooling medium circulates in the cooling flow channel. According to the nozzle provided by the utility model, the cooling flow channel is arranged near the bearing cavity provided with the height measuring sensor, and a cooling medium flowing through the cooling flow channel can be used for cooling the height measuring sensor, so that the problem that the height measuring sensor breaks down due to over-high heating temperature can be solved, and the cutting precision can be improved. According to the laser cutting machine comprising the nozzle, the problem that the height measuring sensor breaks down due to the fact that the heated temperature is too high can be solved, and then the cutting precision can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting equipment, in particular to a nozzle and a laser cutting machine. Background Art

[0002] Laser cutting machines use high-power density laser beams to irradiate the material being cut, so that the material is quickly heated to the vaporization temperature, evaporated to form holes, and as the beam moves, the holes are expanded into slits to complete the cutting of the material. To ensure the consistency of the slits, laser cutting machines usually use height sensors to detect the distance between the nozzle and the material when cutting the material, so as to adjust the position of the nozzle in real time to ensure that the distance between the nozzle and the material is always consistent during the cutting process.

[0003] However, a large amount of heat generated by the laser cutting machine during cutting will be transferred to the nozzle, and the height sensor is usually set inside the nozzle. The height sensor is heated to too high a temperature and is prone to malfunction, which in turn affects the cutting accuracy.

[0004] Therefore, the above problems need to be solved urgently. Utility Model Content

[0005] The utility model aims to provide a nozzle and a laser cutting machine to solve the problem that the height measuring sensor fails due to excessively high heating temperature, thereby improving the cutting accuracy.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A nozzle comprises a main body, wherein a laser hole is arranged at the center of the main body for a laser beam to pass through, the main body comprises a bearing cavity and a cooling channel, the bearing cavity is located between the laser hole and the cooling channel, the bearing cavity is used for installing a height measuring sensor, and a cooling medium flows in the cooling channel.

[0008] Preferably, the bearing cavity is arranged in an arc shape and is arranged around the laser hole.

[0009] Preferably, the cooling channel is arranged in an arc shape and is arranged around the outer side of the bearing cavity.

[0010] Preferably, the cooling channel comprises an inlet and an outlet, and the inlet and the outlet are respectively located at two ends of the cooling channel.

[0011] Preferably, the main body includes a first part and a second part, the first part and the second part can be assembled into one body, and the bearing cavity and the cooling channel are formed therebetween.

[0012] Preferably, the main body further comprises a connecting component disposed between the first part and the second part, and the first part and the second part are connected via the connecting component.

[0013] Preferably, the connecting assembly comprises a snap-in member and a snap-in slot, the snap-in member is arranged on the first part, the snap-in slot is arranged on the second part, and the snap-in member and the snap-in slot can be adapted to snap-in with each other.

[0014] Preferably, a first sealing ring groove is formed between the first part and the second part, the first sealing ring groove is located between the bearing cavity and the cooling channel, and a first sealing ring is embedded in the first sealing ring groove.

[0015] Preferably, a second sealing ring groove is formed between the first part and the second part, the second sealing ring groove is arranged around the outer side of the cooling channel, and a second sealing ring is embedded in the second sealing ring groove.

[0016] A laser cutting machine comprises a cooling medium supply mechanism and the above-mentioned nozzle, wherein the cooling medium supply mechanism is configured to supply cooling medium to the cooling flow channel of the nozzle.

[0017] Beneficial effects of the utility model:

[0018] 1. The nozzle provided by the utility model is provided with a cooling channel near the bearing cavity where the height sensor is installed, and the cooling medium flowing through the cooling channel can be used to cool down the height sensor, thereby solving the problem of the height sensor malfunctioning due to excessive heating temperature, and further helping to improve cutting accuracy.

[0019] 2. The nozzle provided by the utility model sets the bearing cavity between the laser hole and the cooling channel, which can make the height sensor closer to the position where the laser beam irradiates the material, so that the data measured by the height sensor can be closer to the actual cutting scene, which helps to further improve the cutting accuracy.

[0020] 3. The laser cutting machine provided by the utility model and including the above-mentioned nozzle can solve the problem of failure of the height measuring sensor due to excessive heating temperature, thereby helping to improve cutting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the nozzle provided by the utility model;

[0022] Figure 2 It is a structural schematic diagram of the first part provided by the utility model;

[0023] Figure 3 It is a structural schematic diagram of the second part provided by the utility model.

[0024] In the figure:

[0025] 1. Main body; 11. First part; 12. Second part; 2. Laser hole; 3. Bearing cavity; 4. Cooling channel; 41. Inlet; 42. Outlet; 5. Connecting assembly; 51. Snap-on piece; 52. Snap-on groove; 6. First sealing ring groove; 7. Second sealing ring groove. DETAILED DESCRIPTION

[0026] Before any embodiments of the present application are explained in detail, it is to be understood that the present application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0027] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0028] In this application, the term "and / or" is a description of the association relationship of associated objects, indicating that three relationships can exist. For example, a centrifugal vortex magnetic pump and / or a centrifugal vortex magnetic pump can represent: the existence of a centrifugal vortex magnetic pump alone, the existence of a centrifugal vortex magnetic pump and a centrifugal vortex magnetic pump at the same time, and the existence of a centrifugal vortex magnetic pump alone. In addition, the character " / " in this application generally indicates that the objects associated before and after are in an "and / or" relationship.

[0029] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and may include electrical connection or coupling.

[0030] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0031] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0032] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that the directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0033] See also Figures 1 to 3 The present embodiment provides a nozzle, including a main body 1, wherein a laser hole 2 is provided at the center of the main body 1 for the laser beam to pass through. The main body 1 includes a bearing cavity 3 and a cooling channel 4, wherein the bearing cavity 3 is located between the laser hole 2 and the cooling channel 4, and the bearing cavity 3 is used to install a height measuring sensor, and a cooling medium flows in the cooling channel 4.

[0034] It is understandable that by setting a cooling channel 4 near the bearing cavity 3 where the height sensor is installed, the cooling medium flowing through the cooling channel 4 can be used to cool the height sensor, thereby solving the problem of the height sensor failing due to excessive heating temperature, thereby helping to improve the cutting accuracy. It is also understandable that in practical applications, materials with uneven surfaces are often cut, so setting the bearing cavity 3 between the laser hole 2 and the cooling channel 4 can make the height sensor closer to the position where the laser beam irradiates the material, thereby making the data measured by the height sensor closer to the actual cutting scene, thereby helping to further improve the cutting accuracy.

[0035] It should be noted that in this embodiment, the cooling medium is preferably cooling water in the prior art. In addition, the cooling medium can be circulated and transported by a water pump in the prior art, so it will not be described in detail. It should also be noted that the height sensor and its working principle are both prior art and will not be described in detail.

[0036] Furthermore, the bearing cavity 3 is arranged in an arc shape and is arranged around the laser hole 2. In this way, the various components of the height sensor installed in the bearing cavity 3 can be arranged around the circumference of the laser hole 2, so that the various components of the height sensor can be evenly heated, thereby avoiding the failure of local components of the height sensor due to overheating. Correspondingly, the cooling channel 4 is arranged in an arc shape and is arranged around the outside of the bearing cavity 3. In this way, the various components of the height sensor distributed in the bearing cavity 3 can be evenly dissipated.

[0037] Furthermore, the cooling channel 4 includes an inlet 41 and an outlet 42, and the inlet 41 and the outlet 42 are respectively located at the two ends of the cooling channel 4. It can be understood that the inlet 41 and the outlet 42 of the cooling channel 4 are respectively arranged at the two ends thereof, so as to ensure that the cooling medium has the longest path when flowing through the cooling channel 4, so as to ensure that the height measuring sensor obtains the best cooling effect.

[0038] In order to reduce the production cost of the nozzle, the main body 1 includes a first part 11 and a second part 12, which can be assembled into one body, and a bearing cavity 3 and a cooling channel 4 are formed between the first part 11 and the second part 12, that is, the structures constituting the bearing cavity 3 are respectively arranged on the first part 11 and the second part 12, and similarly, the two parts constituting the cooling channel 4 are arranged on the first part 11 and the second part 12. Compared with machining the bearing cavity 3 and the cooling channel 4 inside the first part 11 or the second part 12, such a configuration is more convenient to operate and has high efficiency.

[0039] In order to improve the convenience of nozzle assembly, the main body 1 also includes a connecting component 5 arranged between the first part 11 and the second part 12, and the first part 11 and the second part 12 are connected through the connecting component 5. In this embodiment, the connecting component 5 includes a snap-on component 51 and a snap-on groove 52, the snap-on component 51 is arranged on the first part 11, and the snap-on groove 52 is arranged on the second part 12, and the snap-on component 51 and the snap-on groove 52 can be adapted to snap-on. It can be understood that the snap-on structure composed of the snap-on component 51 and the snap-on groove 52 is simple in structure and easy to operate. It should be noted that in other embodiments, the connecting component 5 can also adopt a screw connection structure, a buckle connection structure, etc. in the prior art, and no specific requirements and restrictions are made on this.

[0040] Further, a first sealing ring groove 6 is formed between the first portion 11 and the second portion 12, the first sealing ring groove 6 is located between the bearing cavity 3 and the cooling channel 4, and a first sealing ring is embedded in the first sealing ring groove 6. It can be understood that the first sealing ring is arranged between the bearing cavity 3 and the cooling channel 4, which can prevent the cooling medium in the cooling channel 4 from overflowing into the bearing cavity 3, thereby helping to ensure the normal operation of the height measuring sensor.

[0041] Furthermore, a second sealing ring groove 7 is formed between the first portion 11 and the second portion 12, the second sealing ring groove 7 is arranged around the outside of the cooling channel 4, and a second sealing ring is embedded in the second sealing ring groove 7. It can be understood that the second sealing ring groove 7 is arranged around the outside of the cooling channel 4, which can prevent the cooling medium in the cooling channel 4 from overflowing to the outside of the cooling channel 4, thereby preventing the cooling medium from affecting other components in the nozzle.

[0042] This embodiment further provides a laser cutting machine, which includes a cooling medium supply mechanism and the above-mentioned nozzle, and the cooling medium supply mechanism is configured to supply cooling medium to the cooling channel 4 of the nozzle. It can be understood that the laser cutting machine including the above-mentioned nozzle can solve the problem of failure of the height sensor due to excessive heating temperature, thereby helping to improve cutting accuracy. It should be noted that the cooling medium supply mechanism is preferably a water pump in the prior art to realize the circulation of cooling water in the cooling channel 4.

[0043] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A nozzle, comprising a main body (1), wherein a laser hole (2) is provided at the center of the main body (1) for a laser beam to pass through, characterized in that: The main body (1) comprises a bearing cavity (3) and a cooling channel (4); the bearing cavity (3) is located between the laser hole (2) and the cooling channel (4); the bearing cavity (3) is used to install a height measuring sensor; and a cooling medium flows through the cooling channel (4).

2. A nozzle according to claim 1, characterized in that: The bearing cavity (3) is arranged in an arc shape and is arranged around the laser hole (2).

3. A nozzle according to claim 2, characterized in that: The cooling channel (4) is arranged in an arc shape and is arranged around the outer side of the bearing cavity (3).

4. A nozzle according to claim 1, characterized in that: The cooling flow channel (4) comprises an inlet (41) and an outlet (42), and the inlet (41) and the outlet (42) are respectively located at two ends of the cooling flow channel (4).

5. A nozzle according to claim 1, characterized in that: The main body (1) comprises a first part (11) and a second part (12); the first part (11) and the second part (12) can be assembled into one body, and the bearing cavity (3) and the cooling channel (4) are formed between the first part (11) and the second part (12).

6. A nozzle according to claim 5, characterized in that: The main body (1) further comprises a connecting component (5) arranged between the first part (11) and the second part (12), and the first part (11) and the second part (12) are connected via the connecting component (5).

7. A nozzle according to claim 6, characterized in that: The connecting assembly (5) comprises a clamping member (51) and a clamping groove (52); the clamping member (51) is arranged on the first part (11), and the clamping groove (52) is arranged on the second part (12); the clamping member (51) and the clamping groove (52) can be adapted to be clamped together.

8. A nozzle according to claim 5, characterized in that: A first sealing ring groove (6) is formed between the first part (11) and the second part (12); the first sealing ring groove (6) is located between the bearing cavity (3) and the cooling channel (4); and a first sealing ring is embedded in the first sealing ring groove (6).

9. A nozzle according to claim 5, characterized in that: A second sealing ring groove (7) is formed between the first part (11) and the second part (12); the second sealing ring groove (7) is arranged around the outside of the cooling channel (4); and a second sealing ring is embedded in the second sealing ring groove (7).

10. A laser cutting machine, characterized in that: It comprises a cooling medium supply mechanism and a nozzle according to any one of claims 1 to 9, wherein the cooling medium supply mechanism is configured to supply cooling medium to the cooling channel (4) of the nozzle.

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