Laser nozzle assembly and laser cutting device

Abstract

The embodiment of the invention provides a laser nozzle assembly and a laser cutting device, and relates to the technical field of laser cutting. The laser nozzle assembly comprises a nozzle body, and a nozzle opening is formed in the nozzle body. The sleeving piece is arranged on the nozzle body in a sleeving mode, the sleeving piece can move in the axial direction of the nozzle body relative to the nozzle body, and the sleeving piece is used for making contact with a workpiece; part of the measuring assembly is arranged on the sleeving piece, and the measuring assembly is used for measuring the distance between the bottom of the sleeving piece and the nozzle. According to the laser nozzle assembly, the distance between the nozzle body and the workpiece is measured by measuring the distance between the bottom of the sleeving piece and the nozzle, manual intervention is not needed, and the accuracy of the measurement result is high.

Description

Technical Field

[0001] The present application relates to the field of laser cutting technology, and in particular to a laser nozzle assembly and a laser cutting device. Background Art

[0002] The laser cutting device includes a support body and a laser nozzle assembly disposed on the support body. In order to ensure the processing quality of the workpiece, it is necessary to regularly measure the distance between the nozzle body of the laser nozzle assembly and the workpiece.

[0003] In the related art, the nozzle body is moved to a cutting position by a support body, and the distance between the nozzle body and the workpiece is manually measured statically using a feeler gauge.

[0004] However, manual measurements using a feeler gauge are less accurate. Summary of the invention

[0005] The present application provides a laser nozzle assembly and a laser cutting device, which are used to solve the problem of low accuracy in manually measuring the distance between the laser nozzle and the workpiece using a feeler gauge.

[0006] In a first aspect, an embodiment of the present application provides a laser nozzle assembly, comprising:

[0007] A nozzle body, wherein the nozzle body has a nozzle;

[0008] A sleeve member, which is sleeved on the nozzle body and can move relative to the nozzle body along the axial direction of the nozzle body, and is used to contact the workpiece;

[0009] A measuring component, part of which is arranged on the sleeve, and is used to measure the distance between the bottom of the sleeve and the nozzle.

[0010] In a possible embodiment, the measuring assembly includes a scale and an indicator, one of which is disposed on the sleeve, and the other of which is disposed on the nozzle body, and the indicator is used to contact the scale on the scale.

[0011] In a possible implementation, the scale member is a scale plate having a plurality of scales spaced apart along the axial direction of the nozzle body.

[0012] In a possible implementation, the indicator includes:

[0013] A first connecting section, the first connecting section is connected to the nozzle body or the sleeve;

[0014] A second connecting section, the second connecting section is connected to the first connecting section, and the second connecting section extends in a direction toward the scale member;

[0015] The indicating segment is connected to the second connecting segment, and the indicating segment is used to contact the scale on the scale piece.

[0016] In a possible implementation, the indicating segment is in the shape of a triangle, and one of the angles of the triangle is used to contact the scale on the scale member.

[0017] In a possible implementation, the laser nozzle assembly further includes a follower fixing component, the sleeve has a follower hole, and the follower fixing component includes:

[0018] A first fixing member, the first fixing member is inserted into the follower hole, the first fixing member can move in the follower hole along the axial direction of the nozzle body, and the first fixing member is connected to the nozzle body;

[0019] The first elastic member is sleeved on the first fixing member and abuts against between the sleeve member and the first fixing member.

[0020] In a possible implementation, the first fixing member includes a third connecting section and a sliding section connected to each other, and the follower hole includes a sliding hole section and a guide hole section connected to each other;

[0021] The third connecting section is detachably connected to the nozzle body, and the sliding section is inserted into the sliding hole section;

[0022] The width of the third connecting section is greater than the width of the sliding hole section, and the width of the third connecting section is less than the width of the guide hole section.

[0023] In a possible implementation, the laser nozzle assembly further includes a backstop assembly, and the backstop assembly includes:

[0024] An elastic stop pin, the elastic stop pin comprises a pin body and a second elastic member, the pin body is inserted into the sleeve member, the second elastic member is sleeved on the pin body, and the second elastic member connects the pin body and the sleeve member;

[0025] A plurality of positioning members, each positioning member is arranged on the nozzle body at intervals along the axial direction of the nozzle body, and a stop groove is formed between two adjacent positioning members;

[0026] The sleeve member moves relative to the nozzle body to compress or stretch the second elastic member and to cause the pin body to be stuck in different retaining grooves.

[0027] In a possible implementation, the laser nozzle assembly further includes a third elastic member, and the third elastic member is sleeved on the nozzle body;

[0028] The sleeve connector has a first protrusion protruding toward the nozzle body, the nozzle body has a second protrusion protruding toward the sleeve connector, and the third elastic member abuts between the first protrusion and the second protrusion.

[0029] In a second aspect, an embodiment of the present application provides a laser cutting device, comprising a support body and any laser nozzle assembly provided in the first aspect arranged on the support body.

[0030] The laser nozzle assembly and laser cutting device provided in the embodiments of the present application, the laser nozzle assembly is provided with a nozzle body, the nozzle body has a nozzle, and the nozzle is used to cut the workpiece; by providing a sleeve, the sleeve is sleeved on the nozzle body, the sleeve contacts the workpiece, and the sleeve moves relative to the nozzle body along the axial direction of the nozzle body to change the distance between the bottom of the sleeve and the nozzle; by providing a measuring component, part of the measuring component is provided on the sleeve, and the measuring component is used to measure the distance between the bottom of the sleeve and the nozzle, the measuring component will not be affected by human factors, so that the accuracy of the measurement result is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the description, are used to explain the principles of the embodiments of the present application.

[0032] Figure 1 A schematic diagram of the structure of a laser nozzle assembly provided in an embodiment of the present application located on a workpiece;

[0033] Figure 2 for Figure 1 A schematic diagram of the structure of the measuring component of the laser nozzle assembly;

[0034] Figure 3 for Figure 1 A schematic diagram of the structure of the connection between the follow-up positioning component and the sleeve of the laser nozzle assembly;

[0035] Figure 4 for Figure 1 A schematic diagram of the structure of the backstop assembly of the laser nozzle assembly;

[0036] Figure 5 for Figure 1 Schematic diagram of the structure of the connection between the sleeve of the laser nozzle assembly and the nozzle body.

[0037] Description of reference numerals:

[0038] 10-Workpiece;

[0039] 100- nozzle body; 110- second protrusion; 120- nozzle;

[0040] 200-sleeve connector; 210-following hole; 211-sliding hole section; 212-guide hole section; 220-first protrusion;

[0041] 300-measuring component; 310-scale member; 320-indicating member; 321-first connecting section; 322-second connecting section; 323-indicating section;

[0042] 400-follow-up positioning assembly; 410-first fixing member; 411-third connecting section; 412-sliding section; 413-abutting portion; 420-first elastic member;

[0043] 500-retraction assembly; 510-elastic retraction pin; 511-pin body; 512-second elastic member; 520-positioning member; 521-introduction part; 530-retraction groove;

[0044] 600 - the third elastic member.

[0045] To facilitate understanding of the solutions of the embodiments of the present application, the spline curves and arrows used in the labels in the accompanying drawings are explained here: the components indicated by the spline curves without arrows are solid components, that is, components with solid structures; the components indicated by the spline curves with arrows are virtual components, that is, components without solid structures.

[0046] The above drawings have shown the clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the embodiments of the present application in any way, but to illustrate the concepts of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the embodiments of the present application, it should be understood that the orientation or position relationship (if any) indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements that are not clearly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the sentence "comprising..." do not exclude the existence of other identical elements in the process, method, article or device comprising the element. If there is no conflict, the embodiments of the present application and the various features in the embodiments can be combined with each other, all within the scope of protection of the present application.

[0049] The embodiment of the present application provides a laser nozzle assembly, Figure 1 It is a schematic structural diagram of the laser nozzle assembly located on the workpiece 10.

[0050] Specifically, see Figure 1 The laser nozzle assembly includes: a nozzle body 100, which has a nozzle 120; a socket 200, which is sleeved on the nozzle body 100, and the socket 200 can move relative to the nozzle body 100 along the axial direction of the nozzle body 100, and the socket 200 is used to contact the workpiece 10; a measuring component 300, a part of which is arranged on the socket 200, and the measuring component 300 is used to measure the distance between the bottom of the socket 200 and the nozzle 120.

[0051] The nozzle body 100 is a core component of laser output, and has a nozzle 120 thereon, which is used to eject laser beam and auxiliary gas to achieve cutting of the workpiece 10. It should be noted that the nozzle body 100 is a structural design method already existing in the art, and will not be described in detail here.

[0052] The change in the distance between the nozzle body 100 and the workpiece 10 will affect the processing quality of the workpiece 10. Therefore, in production, it is usually necessary to regularly measure the distance between the nozzle body 100 and the workpiece 10. In the related art, it is usually necessary to move the nozzle body 100 to the cutting position through a support body, and then the operator uses a feeler gauge to statically measure the distance between the nozzle body 100 and the workpiece 10. Manual measurement depends on the technical level and experience of the operator. If the operator's technical level is not high or the experience is insufficient, the accuracy of the measurement result will be low.

[0053] In this embodiment, the introduction of the sleeve 200 and the measuring assembly 300 solves the above-mentioned problem.

[0054] Specifically, the socket 200 is sleeved on the nozzle body 100, and the socket 200 can move relative to the nozzle body 100 along the axial direction of the nozzle body 100. When the laser nozzle assembly moves toward the workpiece 10, the bottom of the socket 200 can contact the workpiece 10, and the distance between the bottom of the socket 200 and the nozzle 120 is actually the distance between the bottom of the socket 200 and the nozzle 120 in the axial direction of the nozzle body 100; when the nozzle body 100 moves to the cutting position, the distance between the bottom of the socket 200 and the nozzle 120 is the working distance between the nozzle body 100 and the workpiece 10. The working distance can be used to determine whether the current cutting position of the nozzle body 100 meets the cutting requirements. If not, it is necessary to stop the machine and adjust the working distance between the nozzle body 100 and the workpiece 10 so that the working distance meets the cutting requirements.

[0055] By setting the measuring component 300, part of the measuring component 300 is set on the socket 200, and the measuring component 300 is used to measure the distance between the bottom of the socket 200 and the nozzle 120. The measuring component 300 will not be affected by human factors, so that the accuracy of the measurement result is higher.

[0056] Furthermore, through the cooperation of the sleeve 200 and the measuring assembly 300, the distance between the nozzle body 100 and the workpiece 10 can be measured during the operation of the nozzle body 100 without stopping the machine, with a short measuring time, convenient operation and a simple measuring method.

[0057] Compared with the prior art, the embodiment of the present application does not require manual operation to move the laser nozzle assembly, which reduces the skill requirements for operators, reduces training costs, reduces operating difficulty, and avoids damage to people or equipment caused by human operating errors.

[0058] The preferred technical solution of the laser nozzle assembly of the embodiment of the present application is described below in conjunction with the accompanying drawings, wherein: Figure 2 is a schematic structural diagram of a measuring component 300 of a laser nozzle assembly, Figure 3A schematic diagram of the structure of the follow-up positioning component 400 of the laser nozzle assembly connected to the sleeve 200, Figure 4 A schematic diagram of the structure of the backstop assembly 500 of the laser nozzle assembly, Figure 5 It is a structural schematic diagram of the connection between the sleeve 200 and the nozzle body 100 of the laser nozzle assembly.

[0059] In some embodiments, see Figure 1 and Figure 2 The measuring assembly 300 includes a scale member 310 and an indicator member 320 , one of which is disposed on the socket 200 , and the other of which is disposed on the nozzle body 100 , and the indicator member 320 is used to contact the scale on the scale member 310 .

[0060] The scale member 310 and the indicator member 320 are respectively arranged on the sleeve 200 and the nozzle body 100, forming a relatively movable measurement system. When the sleeve 200 contacts and compresses the workpiece 10, the indicator member 320 contacts different scales on the scale member 310, directly reflecting the distance between the bottom of the sleeve 200 and the nozzle 120, thereby reflecting the distance between the nozzle body 100 and the workpiece 10. This direct mechanical measurement method eliminates the intermediate link of manually using tools for measurement. The operator only needs to observe the scale in contact with the indicator member 320 to read the distance, reducing error accumulation, thereby improving the accuracy of the measurement result.

[0061] The scale member 310 and the indicator member 320 are fixedly arranged on the sleeve member 200 and the nozzle body 100 respectively, which can ensure that the reference point of each measurement is always the same. No matter which operator performs the measurement, the same measurement reference is used, which improves the consistency and repeatability of the measurement.

[0062] The arrangement of the scale member 310 and the indicator member 320 allows the measurement process to be carried out synchronously with the movement of the sleeve member 200, and the measurement starts immediately when the sleeve member 200 contacts the workpiece 10. This design allows the measurement process to become part of the cutting process, and the measurement can be completed without stopping the machine, thereby improving production efficiency.

[0063] For some specific implementations, see Figure 1 and Figure 2 The scale member 310 is a scale plate, and the scale plate has a plurality of scales arranged at intervals along the axial direction of the nozzle body 100. The setting of multiple scales can cover a larger measurement range. By reasonably designing the scale spacing and values, high-precision measurement can be achieved.

[0064] For other specific implementations, see Figure 1 and Figure 2The indicator member 320 includes: a first connecting section 321, the first connecting section 321 is connected to the nozzle body 100 or the socket 200; a second connecting section 322, the second connecting section 322 is connected to the first connecting section 321, and the second connecting section 322 extends in a direction toward the scale member 310; an indicating section 323, the indicating section 323 is connected to the second connecting section 322, and the indicating section 323 is used to contact the scale on the scale member 310.

[0065] The three-section structure of the indicator 320 (the first connecting section 321 , the second connecting section 322 and the indicating section 323 ) provides flexible installation and adjustment capabilities.

[0066] By providing the first connecting section 321 , the indicator 320 can be firmly connected to the nozzle body 100 or the sleeve 200 , thereby ensuring the stability of the measurement.

[0067] The second connecting section 322 extends in a direction toward the scale member 310 , compensating for the distance difference between the indicator 320 and the scale member 310 , so that the indicator section 323 can contact the scale on the scale member 310 .

[0068] The indicating segment 323 is in direct contact with the scale on the scale member 310 , and the operator can intuitively observe the corresponding relationship between the indicating segment 323 and the scale to achieve accurate scale reading.

[0069] It should be noted that the embodiment of the present application does not limit the specific structure of the indicating segment 323, as long as it can accurately indicate the position of the scale. Exemplarily, the indicating segment 323 is needle-shaped, triangular-shaped or blade-shaped.

[0070] To facilitate understanding of the specific structure of the indicating segment 323 , the embodiment of the present application is described by taking the indicating segment 323 being triangular as an example: the indicating segment 323 is triangular, and one of the angles of the triangle is used to contact the scale on the scale member 310 .

[0071] Specifically, the sharp corner of the triangle can be used as an indicator point to accurately point to the scale, greatly reducing the reading error. This precise indication effect is due to the geometric characteristics of the sharp corner of the triangle, which can provide a very small contact point in a limited space. This very small contact point can significantly reflect the position and reading of the scale.

[0072] Moreover, the sharp corners of the triangle can more easily guide the operator's line of sight, making the reading process more intuitive and faster, which not only improves the measurement efficiency, but also reduces the reading errors caused by line of sight deviation, thereby improving the accuracy of the measurement results.

[0073] In some specific embodiments (not shown in the figure), the scale member 310 is a scale mark, which is covered on the sleeve 200, and the sleeve 200 has a scale window, and the scale mark is located on one side of the scale window; the indicator 320 is a pointer, which is arranged on the nozzle body 100, inserted in the scale window, and points to the scale mark. Through the combination of the scale mark and the pointer, the reading can be clearly and accurately performed.

[0074] Furthermore, the scale member 310 is a voice broadcast member. When the sleeve member 200 moves to a preset position, the scale member 310 can broadcast the value of the scale pointed to by the indicator member 320 to provide feedback to the operator on the current distance between the nozzle body 100 and the workpiece 10 .

[0075] In other embodiments, see Figure 1 , Figure 3 and Figure 5 The laser nozzle assembly also includes a follower fixing component, the sleeve 200 has a follower hole 210, the follower fixing component includes a first fixing component 410, the first fixing component 410 is inserted into the follower hole 210, the first fixing component 410 can move in the follower hole 210 along the axial direction of the nozzle body 100, and the first fixing component 410 is connected to the nozzle body 100.

[0076] The first fixing member 410 is connected to the nozzle body 100, and the sleeve 200 is provided with a follower hole 210. The first fixing member 410 is inserted into the follower hole 210. The first fixing member 410 can move along the axial direction of the nozzle body 100 under the guidance of the follower hole 210 without deviation or rotation. In a specific implementation, the follower hole 210 is provided along the axial direction of the nozzle body 100.

[0077] In some specific embodiments (not shown in the figure), the first fixing member 410 has an abutment portion protruding along its radial direction, the abutment portion is arranged at one end of the first fixing member 410 away from the nozzle body 100, and the abutment portion abuts against the sleeve 200.

[0078] Thus, there is friction between the abutment portion and the sleeve 200, and under the action of the friction, the nozzle body 100 can support the sleeve 200 through the first fixing member 410. When the sleeve 200 contacts the workpiece 10 and the external force of the workpiece 10 on the sleeve 200 is greater than the friction, the first fixing member 410 can move in the follower hole 210 along the axial direction of the nozzle body 100.

[0079] For other specific implementations, see Figure 5The first fixing member 410 has an abutting portion 413 protruding along its radial direction. The first elastic member 420 is sleeved on the first fixing member 410 , and the first elastic member 420 abuts between the sleeve member 200 and the abutting portion 413 .

[0080] In this embodiment, there is friction between the first elastic member 420 and the sleeve member 200. Under the action of the friction, the nozzle body 100 can support the sleeve member 200 through the first fixing member 410 and the first elastic member 420. When the sleeve member 200 contacts the workpiece 10 and the external force of the workpiece 10 on the sleeve member 200 is greater than the friction, the first fixing member 410 can move in the follower hole 210 along the axial direction of the nozzle body 100.

[0081] In a specific implementation, the abutting portion 413 may be disposed on a side of the sleeve 200 away from the nozzle body 100 , or may be disposed on a side of the sleeve 200 close to the nozzle body 100 .

[0082] In some specific implementations, see Figure 3 and Figure 5 The first fixing member 410 includes a third connecting section 411 and a sliding section 412 which are connected to each other, and the follower hole 210 includes a sliding hole section 211 and a guide hole section 212 which are connected to each other; the third connecting section 411 is detachably connected to the nozzle body 100, and the sliding section 412 is inserted into the sliding hole section 211; the width of the third connecting section 411 is greater than the width of the sliding hole section 211, and the width of the third connecting section 411 is less than the width of the guide hole section 212.

[0083] In this embodiment, when the first fixing member 410 is disassembled, since the width of the third connecting segment 411 is greater than the width of the sliding hole segment 211, the third connecting segment 411 cannot slide out through the narrow sliding hole segment 211, thereby preventing the first fixing member 410 from falling off. Furthermore, since the width of the third connecting segment 411 is less than the width of the guide hole segment 212, the third connecting segment 411 can pass through the guide hole segment 212, and the first fixing member 410 can be moved to the position of the guide hole segment 212 and the first fixing member 410 can be pulled out, thereby completing the disassembly of the first fixing member 410 without worrying about the first fixing member 410 accidentally falling off.

[0084] It can be understood that the number of the guide hole segments 212 can be two, which are respectively arranged on two opposite sides of the sliding hole segment 211 .

[0085] After the first fixing member 410 is removed, the nozzle body 100 can no longer support the sleeve 200, so that the sleeve 200 can be separated from the nozzle body 100 to achieve the removal of the sleeve 200. When the sleeve 200 is removed, the sleeve 200 will not interfere with the normal operation of the nozzle body 100.

[0086] Furthermore, the sleeve 200 can be removed by removing the first fixing member 410 , so that an operator can more conveniently maintain the nozzle body 100 , the sleeve 200 and the follow-up fixing assembly.

[0087] In a specific implementation, the third connecting section 411 is screwed, riveted or clamped to the nozzle body 100 .

[0088] In some embodiments, see Figure 1 and Figure 4 The laser nozzle assembly further includes a backstop assembly 500 . When the sleeve 200 moves to a preset position, the backstop assembly 500 locks the sleeve 200 and the nozzle body 100 .

[0089] By providing the backstop assembly 500, a controllable self-locking mechanism is provided for the sleeve 200. This mechanism can position the sleeve 200 at different positions to achieve position adjustment and locking of the sleeve 200 relative to the nozzle body 100. When the sleeve 200 is locked, the position of the sleeve 200 relative to the nozzle body 100 remains unchanged, so that the relative position between the scale member 310 and the indicator member 320 remains unchanged, thereby ensuring the accuracy of the reading.

[0090] For further information, see Figure 4 The backstop assembly 500 includes: an elastic backstop pin 510, which is arranged on the sleeve 200; a plurality of positioning members 520, each positioning member 520 is arranged on the nozzle body 100 at intervals along the axial direction of the nozzle body 100, and a backstop groove 530 is formed between two adjacent positioning members 520; the sleeve 200 moves relative to the nozzle body 100 to compress or stretch the elastic backstop pin 510, so that the elastic backstop pin 510 is stuck in different backstop grooves 530.

[0091] The elastic stop pin 510 is arranged on the sleeve 200, so that the stop assembly 500 has flexibility and adaptability. When the sleeve 200 moves to the desired position, the elastic stop pin 510 can automatically stretch or compress and quickly snap into the corresponding stop groove 530, making the stop locking process of the stop assembly 500 simple and quick.

[0092] A plurality of positioning members 520 are arranged at intervals along the axial direction of the nozzle body 100, and a stop groove 530 is formed between two adjacent positioning members 520. The plurality of stop grooves 530 provide a plurality of preset locking positions for the elastic stop pin 510. This design allows the operator to select a suitable locking position under different working conditions, and realizes multi-level adjustment of the scale reading, thereby improving the accuracy of the scale reading.

[0093] For some specific implementations, see Figure 4 The elastic stop pin 510 includes: a pin body 511, which is inserted into the socket 200; a second elastic member 512, which is sleeved on the pin body 511 and connects the pin body 511 and the socket 200.

[0094] The pin body 511 is inserted into the socket 200 , so that the pin body 511 can be stably supported on the socket 200 .

[0095] The second elastic member 512 is sleeved on the pin body 511 and connects the pin body 511 and the socket 200, which can prevent the pin body 511 from loosening or falling off during use. Moreover, under the action of the elastic force of the second elastic member 512, the pin body 511 can freely extend and retract when the socket 200 moves relative to the nozzle body 100, thereby entering or exiting different stop grooves 530 more smoothly to avoid jamming.

[0096] In a specific implementation, the pin body 511 has a connecting portion (not shown) protruding along its radial direction, and the first elastic member 420 is sleeved on the pin body 511 , and the first elastic member 420 connects the sleeve member 200 and the connecting portion.

[0097] Furthermore, the connection portion may be disposed on a side of the sleeve 200 away from the nozzle body 100 , or may be disposed on a side of the sleeve 200 close to the nozzle body 100 .

[0098] For other specific implementations, see Figure 4 The positioning member 520 has an introduction portion 521 , and the sleeve member 200 moves relative to the nozzle body 100 so that the elastic stop pin 510 is smoothly introduced into the stop groove 530 along the introduction portion 521 .

[0099] By providing the introduction portion 521, the specific shape of the introduction portion 521 enables the elastic stop pin 510 to slide into the stop groove 530 along the guide surface of the introduction portion 521, rather than directly making hard contact with the positioning member 520. This smooth introduction method can reduce the introduction resistance, not only allowing the elastic stop pin 510 to be more smoothly introduced into the stop groove 530, but also allowing the sleeve 200 to move more smoothly relative to the nozzle body 100.

[0100] In some examples, the introduction portion 521 is inclined or arc-shaped.

[0101] In other embodiments (not shown in the figure), the anti-retraction assembly 500 is an electric telescopic cylinder, which is arranged on the socket 200. When the socket 200 moves to a preset position, the electric telescopic rod extends and abuts against the nozzle body 100. Under the action of friction, the socket 200 cannot move relative to the nozzle body 100, so as to lock the relative position of the socket 200 and the nozzle body 100.

[0102] In some other embodiments, see Figure 1 and Figure 5 The laser nozzle assembly further includes a third elastic member 600 , which is sleeved on the nozzle body 100 , and the third elastic member 600 abuts between the sleeve 200 and the nozzle body 100 .

[0103] By setting the third elastic member 600, when the nozzle body 100 moves to the cutting position, the socket 200 abuts against the workpiece 10, the socket 200 moves relative to the nozzle body 100, and the third elastic member 600 stretches or compresses. The third elastic member 600 has a buffering effect and can absorb the impact force between the socket 200 and the workpiece 10 to ensure the smooth progress of the measurement process.

[0104] Moreover, when the backstop assembly 500 does not lock the socket 200 and the nozzle body 100, under the action of the elastic force of the third elastic member 600, the distance between the bottom of the socket 200 and the nozzle 120 is the largest, so that the laser nozzle assembly can be used to measure scenes that do not exceed the above distance, and has a wide range of applications.

[0105] It should be noted that the embodiment of the present application does not limit the specific structure of the first elastic member 420, the second elastic member 512 and the third elastic member 600, as long as elastic connection or elastic abutment can be achieved. Exemplarily, the first elastic member 420, the second elastic member 512 and the third elastic member 600 are all springs or elastic sleeves.

[0106] For some specific implementations, see Figure 5 The sleeve 200 has a first protrusion 220 protruding toward the nozzle body 100 , the nozzle body 100 has a second protrusion 110 protruding toward the sleeve 200 , and the third elastic member 600 abuts between the first protrusion 220 and the second protrusion 110 .

[0107] In this embodiment, the third elastic member 600 is respectively abutted against the first protrusion 220 and the second protrusion 110, and the third elastic member 600 has no connection with the sleeve 200 and the nozzle body 100. Therefore, the third elastic member 600 and the sleeve 200 can be removed from the nozzle body 100 for easy maintenance.

[0108] In some other specific embodiments (not shown in the figure), the socket 200 has a first protrusion 220 protruding toward the nozzle body 100, the nozzle body 100 has a second protrusion 110 protruding toward the socket 200, and the third elastic member 600 is connected between the first protrusion 220 and the second protrusion 110.

[0109] In this embodiment, the third elastic member 600 is connected between the first protrusion 220 and the second protrusion 110, so that the socket 200, the third elastic member 600 and the nozzle body 100 are connected together, thereby realizing the installation and support of the socket 200 and the third elastic member 600. Therefore, there is no need to design an additional supporting structure to connect the socket 200 and the nozzle body 100, so that the structure of the laser nozzle assembly is relatively simple.

[0110] An embodiment of the present application also provides a laser cutting device, comprising a support body (not shown) and any of the aforementioned laser nozzle assemblies disposed on the support body.

[0111] The laser cutting device of this embodiment adopts all the technical solutions of any of the aforementioned laser nozzle assemblies, and therefore has at least all the beneficial effects brought by the technical solutions of the aforementioned embodiments, which will not be described one by one here.

[0112] In some specific embodiments, the supporting body is a cutting table, a robot or a manipulator, which is convenient for controlling the movement of the laser nozzle assembly.

[0113] It should be understood that the embodiments of the present application are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A laser nozzle assembly, characterized in that: include: A nozzle body (100), wherein the nozzle body (100) has a nozzle (120); a sleeve member (200), the sleeve member (200) being sleeved on the nozzle body (100), the sleeve member (200) being movable relative to the nozzle body (100) along the axial direction of the nozzle body (100), and the sleeve member (200) being used to contact the workpiece (10); A measuring component (300), part of which is arranged on the sleeve (200), and the measuring component (300) is used to measure the distance between the bottom of the sleeve (200) and the nozzle (120).

2. The laser nozzle assembly according to claim 1, characterized in that: The measuring assembly (300) comprises a scale member (310) and an indicator member (320), one of which is arranged on the sleeve member (200), and the other of which is arranged on the nozzle body (100), and the indicator member (320) is used to contact the scale on the scale member (310).

3. The laser nozzle assembly according to claim 2, characterized in that: The scale member (310) is a scale plate having a plurality of scales arranged at intervals along the axial direction of the nozzle body (100).

4. The laser nozzle assembly according to claim 2, characterized in that: The indicator (320) comprises: A first connecting section (321), wherein the first connecting section (321) is connected to the nozzle body (100) or the socket (200); a second connecting section (322), the second connecting section (322) being connected to the first connecting section (321), the second connecting section (322) extending in a direction toward the scale member (310); An indicating segment (323), wherein the indicating segment (323) is connected to the second connecting segment (322), and the indicating segment (323) is used to contact the scale on the scale member (310).

5. The laser nozzle assembly according to claim 4, characterized in that: The indicating section (323) is in the shape of a triangle, and one of the angles of the triangle is used to contact the scale on the scale member (310).

6. The laser nozzle assembly according to any one of claims 1 to 5, characterized in that: It also includes a follower fixing assembly, the sleeve (200) has a follower hole (210), and the follower fixing assembly includes: a first fixing member (410), the first fixing member (410) being inserted into the follower hole (210), the first fixing member (410) being movable in the follower hole (210) along the axial direction of the nozzle body (100), and the first fixing member (410) being connected to the nozzle body (100); A first elastic member (420), wherein the first elastic member (420) is sleeved on the first fixing member (410), and the first elastic member (420) is abutted between the sleeve member (200) and the first fixing member (410).

7. The laser nozzle assembly according to claim 6, characterized in that: The first fixing member (410) comprises a third connecting section (411) and a sliding section (412) connected to each other, and the follower hole (210) comprises a sliding hole section (211) and a guide hole section (212) connected to each other; The third connecting section (411) is detachably connected to the nozzle body (100), and the sliding section (412) is inserted into the sliding hole section (211); The width of the third connecting section (411) is greater than the width of the sliding hole section (211), and the width of the third connecting section (411) is less than the width of the guide hole section (212).

8. The laser nozzle assembly according to any one of claims 1 to 5, characterized in that: The invention also includes a back-off assembly (500), wherein the back-off assembly (500) includes: An elastic stop pin (510), the elastic stop pin (510) comprising a pin body (511) and a second elastic member (512), the pin body (511) being inserted into the sleeve (200), the second elastic member (512) being sleeved on the pin body (511), and the second elastic member (512) connecting the pin body (511) and the sleeve (200); a plurality of positioning members (520), each of the positioning members (520) being arranged on the nozzle body (100) at intervals along the axial direction of the nozzle body (100), and a stop groove (530) being formed between two adjacent positioning members (520); The sleeve (200) moves relative to the nozzle body (100) so that the second elastic member (512) is compressed or stretched, and the pin body (511) is inserted into different stop grooves (530).

9. The laser nozzle assembly according to any one of claims 1 to 5, characterized in that: It also includes a third elastic member (600), wherein the third elastic member (600) is sleeved on the nozzle body (100); The sleeve (200) has a first protrusion (220) protruding toward the nozzle body (100), the nozzle body (100) has a second protrusion (110) protruding toward the sleeve (200), and the third elastic member (600) abuts between the first protrusion (220) and the second protrusion (110).

10. A laser cutting device, characterized in that: The invention comprises a supporting body and a laser nozzle assembly according to any one of claims 1 to 9 arranged on the supporting body.

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