A long-life laser nozzle

Abstract

The utility model relates to the field of laser nozzle, especially a long service life laser nozzle, nozzle cover cover is established on the nozzle core upper portion to splice and constitute the nozzle whole, the nozzle core middle part is equipped with the nozzle inner chamber to install the diamond inner cover, and the diamond inner cover upper wall is pressed tightly by the nozzle cover, in the utility model, the nozzle inner chamber is provided with the replaceable diamond inner cover to increase the overall performance of the nozzle inner chamber locally, and the diamond inner cover is convenient to disassemble, can effectively prolong the overall service life of the laser nozzle.

Description

Technical Field

[0001] This utility model relates to the field of laser nozzle technology, and in particular to a laser nozzle with a long service life. Background Technology

[0002] Laser nozzles are key consumable parts in laser processing equipment, usually installed at the end of the laser head. Currently, most laser nozzles on the market adopt an integral structure, that is, the nozzle body and the internal flow channel (liner) are made of the same material. However, due to long-term operation in high-temperature environments, when the internal channel of such integral nozzles fails due to wear or damage, the entire nozzle must be scrapped and replaced. Due to considerations of production economy and cost, traditional laser nozzles rarely use high-performance materials for the entire integral structure. Therefore, the service life of traditional nozzles is relatively short, which urgently needs to be solved. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a laser nozzle with a long service life.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A long-life laser nozzle includes a nozzle core and a nozzle cover. The nozzle cover is placed on the upper part of the nozzle core to form a complete nozzle. The nozzle core has a nozzle inner cavity in the middle to install a diamond inner sleeve. The upper wall of the diamond inner sleeve is pressed by the nozzle cover. The inner wall of the nozzle cavity is provided with multiple docking grooves. The docking grooves are matched and docked with the limiting blocks provided on the outer wall of the diamond inner sleeve. A constraint block is installed at the bottom of the docking groove. The inner side of the constraint block is connected to a spring plate to obtain an upward force, so that the top wall of the constraint block and the bottom wall of the limiting block maintain a pressing contact.

[0005] In addition, a preferred structure is that the upper end face of the nozzle core is equipped with a plurality of alignment posts, each of which is connected to a corresponding through hole in the middle of the nozzle cover to form an insertion fit.

[0006] In addition, a preferred structure is that the upper end of the alignment post extends out of the nozzle cover and is threaded with a fastening nut, which presses against the nozzle cover.

[0007] In addition, a preferred structure is that the bottom of the docking groove is provided with an installation groove, one side of the installation groove is connected to a spring plate, and the other end of the spring plate is connected to the inner wall of the constraint block.

[0008] Furthermore, in a preferred configuration, under natural conditions, the constraint block is pressed down by the limiting block on the outer wall of the diamond inner sleeve, causing the constraint block to be at the bottom of the mating groove, and the spring sheet to deflect and generate an upward rebound force on the constraint block.

[0009] In addition, a preferred structure is that the inner wall of the docking groove is provided with sliding grooves on both sides, and the sliding grooves are connected with the protrusions provided on the two side walls of the constraint block to form a sliding fit, so that the constraint block can move smoothly along the sliding grooves.

[0010] The beneficial effects of this utility model are as follows: In this invention, the nozzle inner cavity is provided with a replaceable diamond inner sleeve to locally increase the overall performance of the nozzle inner cavity, and the diamond inner sleeve is easy to disassemble, which can effectively extend the overall service life of the laser nozzle. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the internal structure of a laser nozzle with a long service life proposed in this utility model; Figure 2 This is a schematic diagram of the external structure of a laser nozzle with a long service life proposed in this utility model; Figure 3 This is a schematic diagram of the structure at point A proposed in this utility model; Figure 4 This is a schematic diagram of the nozzle inner cavity structure proposed in this utility model; Figure 5 This is a schematic diagram of the spring sheet connection structure proposed in this utility model; Figure 6 This is a schematic diagram of the constraint block installation structure proposed in this utility model.

[0012] In the diagram: 1. Nozzle core; 2. Nozzle cap; 21. Alignment post; 3. Fastening nut; 4. Diamond inner sleeve; 41. Limiting block; 5. Constraint block; 6. Spring plate; 7. Nozzle inner cavity; 8. Connecting groove; 9. Mounting groove; 10. Slide groove. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Reference Figure 1-6 A laser nozzle with a long service life includes a nozzle core 1 and a nozzle cover 2. The nozzle cover 2 is placed on the upper part of the nozzle core 1 to form a complete nozzle. The nozzle core 1 has a nozzle inner cavity 7 in the middle to install a diamond inner sleeve 4. The upper wall of the diamond inner sleeve 4 is pressed by the nozzle cover 2. The inner wall of the nozzle cavity 7 is provided with multiple mating grooves 8. The mating grooves 8 are matched and mated with the limiting block 41 provided on the outer wall of the diamond inner sleeve 4. A constraint block 5 is installed at the bottom of the mating groove 8. The inner side of the constraint block 5 is connected to the spring plate 6 to obtain the upward force, so that the top wall of the constraint block 5 and the bottom wall of the limiting block 41 are in top pressure contact.

[0015] Multiple alignment posts 21 are installed on the upper end face of the nozzle core 1. Each alignment post 21 is connected to the corresponding through hole in the middle of the nozzle cover 2 to form an insertion fit. The upper end of the alignment post 21 extends out of the nozzle cover 2 and is connected to a fastening nut 3 by thread. The fastening nut 3 is pressed on the nozzle cover 2 and the nozzle cover 2 is locked by the fastening nut 3.

[0016] In addition, the upper part of the nozzle cover 2 is provided with threads for mating the laser nozzle, which is in line with the conventional connection method in the art.

[0017] The bottom of the docking groove 8 is provided with an installation groove 9. One side of the installation groove 9 is connected to a spring plate 6, and the other end of the spring plate 6 is connected to the inner wall of the constraint block 5.

[0018] In its natural state, the constraint block 5 is pressed down by the limiting block 41 on the outer wall of the diamond inner sleeve 4, so that the constraint block 5 is at the bottom of the docking groove 8 and the spring plate 6 deflects and generates an upward rebound force on the constraint block 5.

[0019] The inner wall of the docking groove 8 is provided with sliding grooves 10 on both sides. The sliding grooves 10 are connected with the protrusions on both sides of the constraint block 5 to form a sliding fit, and the constraint block 5 moves smoothly along the sliding grooves 10.

[0020] In this embodiment, the diamond inner sleeve 4 can strengthen and dissipate heat in the nozzle cavity 7 by locally optimizing the structure.

[0021] During the later maintenance of the diamond inner sleeve 4, by loosening the fastening nut 3 and removing the nozzle core 1, the nozzle cover 2 is separated from the upper wall of the diamond inner sleeve 4. Under the action of the internal spring plate 6, the spring plate 6 drives the constraint block 5 to reset and move upward, and lifts the diamond inner sleeve 4, so that the diamond inner sleeve 4 can be quickly separated from the nozzle inner cavity 7 to achieve the effect of quick replacement and disassembly.

[0022] Correspondingly, during the installation of the diamond inner sleeve 4, the diamond inner sleeve 4 is placed into the nozzle inner cavity 7, and the limiting block 41 on the outer wall of the diamond inner sleeve 4 is aligned with the docking groove 8 for placement. Then, the limiting block 41 will contact and press down with the constraint block 5 on the bottom side of the docking groove 8. The constraint block 5 achieves smooth displacement through the sliding groove 10 and drives the spring plate 6 to deflect to generate the opposite force. At this time, the nozzle cover 2 is placed on the upper wall of the diamond inner sleeve 4, and the nozzle cover 2 is vertically inserted and docked with the alignment post 21 on the nozzle core 1. Then, the fastening nut 3 is screwed in to press the nozzle cover 2 to complete the installation. At this time, the diamond inner sleeve 4 and the nozzle inner cavity 7 are effectively matched and stably pressed into the nozzle inner cavity 7 by the nozzle cover 2.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A laser nozzle with a long service life, comprising a nozzle core (1) and a nozzle cap (2), characterized in that, The nozzle cap (2) is placed on the upper part of the nozzle core (1) to form the nozzle as a whole. The nozzle core (1) has a nozzle inner cavity (7) in the middle to install the diamond inner sleeve (4). The upper wall of the diamond inner sleeve (4) is pressed by the nozzle cap (2). The inner wall of the nozzle cavity (7) is provided with multiple docking grooves (8). The docking grooves (8) are matched and docked with the limiting block (41) provided on the outer wall of the diamond inner sleeve (4). A constraint block (5) is installed at the bottom of the docking groove (8). The inner side of the constraint block (5) is connected to the spring sheet (6) to obtain the upward force, so that the top wall of the constraint block (5) and the bottom wall of the limiting block (41) maintain the pressure contact.

2. The laser nozzle with a long service life according to claim 1, characterized in that, The upper end face of the nozzle core (1) is equipped with a plurality of alignment posts (21), each alignment post (21) being connected to the corresponding through hole opened in the middle of the nozzle cover (2) to form an insertion fit.

3. A laser nozzle with a long service life according to claim 2, characterized in that, The upper end of the alignment post (21) extends out of the nozzle cover (2) and is threaded with a fastening nut (3), which presses against the nozzle cover (2).

4. A laser nozzle with a long service life according to claim 1, characterized in that, The bottom of the docking groove (8) is provided with an installation groove (9), and a spring plate (6) is connected to one side of the installation groove (9). The other end of the spring plate (6) is connected to the inner wall of the constraint block (5).

5. A laser nozzle with a long service life according to claim 4, characterized in that, In its natural state, the constraint block (5) is pressed down by the limiting block (41) on the outer wall of the diamond inner sleeve (4), so that the constraint block (5) is at the bottom of the docking groove (8) and the spring sheet (6) deflects and generates an upward rebound force on the constraint block (5).

6. A laser nozzle with a long service life according to claim 1, characterized in that, The inner wall of the docking groove (8) is provided with sliding grooves (10) on both sides. The sliding grooves (10) are connected with the protrusions on both sides of the constraint block (5) to form a sliding fit, and the constraint block (5) moves smoothly along the sliding grooves (10).

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