Laser cutting nozzle convenient to disassemble and assemble

Abstract

The utility model provides a laser cutting nozzle convenient to disassemble and assemble, and belongs to the technical field of laser cutting nozzles. The laser cutting nozzle convenient to disassemble and assemble comprises a cutting nozzle body and a connector. An auxiliary sealing plate is arranged on the outer side of the mounting plate in a threaded connection mode, and the auxiliary sealing plate and the connecting position of the connector and the threaded connector are sealed after the cutting nozzle body is mounted; a heat insulation sleeve is detachably arranged on the auxiliary sealing plate and the cutting nozzle body. The heat insulation sleeve is detachably connected with the auxiliary sealing plate and the cutting nozzle body, so that when the cutting nozzle body is damaged during operation and needs to be replaced, replacement personnel can be protected, the cutting nozzle body can be replaced in time along with the cutting nozzle body, the cutting nozzle body can be replaced without waiting for temperature drop, and the production efficiency is not affected; and moreover, replacement personnel cannot be scalded, and the cutting nozzle body is convenient to replace and disassemble.

Description

Technical Field

[0001] The present application relates to the field of laser cutting nozzles, and in particular to a laser cutting nozzle that is easy to assemble and disassemble. Background Art

[0002] Laser cutting machine is to focus the laser emitted from the laser into a high-power density laser beam through the optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point, and at the same time, the high-pressure gas coaxial with the beam blows away the molten or vaporized metal. With the improvement of modern requirements for processing technology, laser cutting machines are now widely used. When using laser cutting machines, the nozzle is one of the essential components and is located at the bottom of the laser head, very close to the workpiece. The focused laser and high-pressure airflow are ejected through the nozzle. The nozzle of the laser cutting machine can assist the gas to spray out quickly, which can effectively prevent the melt stains and other debris from rebounding upwards, thereby protecting the focusing mirror. At the same time, it can control the gas diffusion area and size, which will affect the cutting quality of the laser cutting machine.

[0003] Since the laser cutting nozzle is a consumable, it needs to be replaced regularly. However, if the laser cutting nozzle is damaged while working and needs to be replaced, the temperature of the laser cutting nozzle can reach 200-400 degrees Celsius during operation. This makes it inconvenient to replace the damaged laser cutting nozzle and can easily cause burns to the replacement personnel. Utility Model Content

[0004] In order to remedy the above shortcomings, the present application provides a laser cutting nozzle that is easy to disassemble and assemble, aiming to improve the problem that the temperature of the laser cutting nozzle can reach 200-400 degrees Celsius during operation, which makes it inconvenient to replace the damaged laser cutting nozzle and can easily cause burns to the replacement personnel.

[0005] An embodiment of the present application provides a laser cutting nozzle that is easy to disassemble and assemble, including a cutting nozzle body and a connecting head.

[0006] A mounting plate is installed on the cutting nozzle body, and a threaded joint is connected to the mounting plate. The threaded joint is threadedly connected to the connecting head. An auxiliary sealing plate is threadedly connected to the outer side of the mounting plate. The auxiliary sealing plate is sealed at the connection between the connecting head and the threaded joint after the cutting nozzle body is installed. A heat insulation sleeve is detachably provided on the auxiliary sealing plate and the cutting nozzle body.

[0007] In a specific embodiment, the thermal insulation sleeve includes an annular thermal insulation sleeve and a conical thermal insulation sleeve, the annular thermal insulation sleeve is connected to the conical thermal insulation sleeve, the annular thermal insulation sleeve passes through the cutting nozzle body and is detachably connected to the outside of the auxiliary sealing plate, and at this time the conical thermal insulation sleeve is located outside the cutting nozzle body.

[0008] In a specific embodiment, an elastic abutment is provided on the side of the annular heat insulation sleeve, and an abutment groove cooperating with the elastic abutment is provided on the outer side of the auxiliary sealing plate.

[0009] In a specific embodiment, the elastic clamping member includes a limit block and a guide rod, one end of the limit block is connected to the guide rod, the other end of the guide rod movably passes through the annular thermal insulation sleeve and is fixedly connected to the clamping block, and the clamping block is tightly pressed against the inside of the clamping groove, and a spring is provided on the outer sleeve of the guide rod between the clamping block and the inner side wall of the annular thermal insulation sleeve.

[0010] In a specific embodiment, a clearance groove cooperating with the spring is provided on the inner side of the annular heat insulation sleeve.

[0011] In a specific embodiment, a sealing gasket is provided on the inner side wall of the auxiliary sealing plate.

[0012] In a specific embodiment, a first internal thread is formed on the inner side of the auxiliary sealing plate, and a first external thread matching the first internal thread is formed on the outer side of the mounting plate.

[0013] In a specific embodiment, the outer side of the threaded joint is provided with a second external thread, and the interior of the connecting head is provided with a second internal thread matching with the second external thread.

[0014] Beneficial effects:

[0015] 1. Through the detachable connection between the heat-insulating sleeve, the auxiliary sealing plate and the cutting nozzle body, when the cutting nozzle body is damaged during operation and needs to be replaced, the replacement personnel can be protected and replaced in time with the cutting nozzle body without waiting for the temperature to drop, which will not affect the production efficiency and will not cause burns to the replacement personnel, and it is convenient to replace and disassemble the cutting nozzle body.

[0016] 2. By setting the auxiliary sealing plate, the connection between the threaded joint and the connector can be made more stable, thereby increasing the stability of the cutting nozzle body during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of a laser cutting nozzle that is easy to disassemble and assemble provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the position structure of the auxiliary sealing plate after the cutting nozzle body provided in the embodiment of the present application is installed;

[0020] Figure 3 A schematic diagram of the position structure of an unfinished auxiliary sealing plate installed on a cutting nozzle body provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of the connection relationship between the heat insulation sleeve and the auxiliary sealing plate provided in the embodiment of the present application;

[0022] Figure 5 Provided for the implementation of this application Figure 4 Enlarged view of point A in the middle.

[0023] In the figure: 1-cutting nozzle body; 2-mounting plate; 3-threaded joint; 4-auxiliary sealing plate; 41-tightening groove; 5-insulating sleeve; 51-annular insulating sleeve; 52-conical insulating sleeve; 6-elastic tight fitting; 61-limiting block; 62-guide rod; 63-tightening block; 64-spring; 7-connector; 8-sealing pad. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0025] See also Figure 1-Figure 5 The present application provides a laser cutting nozzle that is easy to disassemble and assemble, including a cutting nozzle body 1 and a connecting head 7.

[0026] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The cutting nozzle body 1 is provided with a mounting plate 2, the mounting plate 2 is connected with a threaded joint 3, the threaded joint 3 is threadedly connected with the connector 7, an auxiliary sealing plate 4 is threadedly connected with the outer side of the mounting plate 2, and the auxiliary sealing plate 4 is sealed at the connection between the connector 7 and the threaded joint 3 after the cutting nozzle body 1 is installed. Specifically, the connector 7 is installed on the laser cutting machine. A heat insulation sleeve 5 is detachably provided on the auxiliary sealing plate 4 and the cutting nozzle body 1. Among them, when the cutting nozzle body 1 is damaged during operation and needs to be replaced, first put the heat insulation sleeve 5 on the auxiliary sealing plate 4 and the cutting nozzle body 1, then pinch the heat insulation sleeve 5 outside the auxiliary sealing plate 4 by hand, rotate the auxiliary sealing plate 4, so that the auxiliary sealing plate 4 moves to the bottom of the connector 7, and then pinch the heat insulation sleeve 5 outside the cutting nozzle body 1 again, rotate the cutting nozzle body 1, so that the threaded joint 3 is detached from the connector 7, and when installing a new cutting nozzle body 1, align the threaded joint 3 with the connector 7 and tighten it, and then rotate the auxiliary sealing plate 4 again to seal the connection between the connector 7 and the threaded joint 3 and then perform normal operation. Through the detachable connection between the heat insulation sleeve 5 and the auxiliary sealing plate 4 and the cutting nozzle body 1, when the cutting nozzle body 1 is damaged during operation and needs to be replaced, the replacement personnel can be protected and replaced in time with the cutting nozzle body 1, and can be replaced without waiting for its temperature to drop, which will not affect the production efficiency and will not cause burns to the replacement personnel, and it is convenient to replace and disassemble the cutting nozzle body 1. The auxiliary sealing plate 4 can make the connection between the threaded joint 3 and the connector 7 more stable, thereby increasing the stability of the cutting nozzle body 1 during operation. Due to the detachable setting of the heat insulating sleeve 5, the heat insulating sleeve 5 can be reused for a long time.

[0027] In this embodiment, the heat insulating sleeve 5 includes an annular heat insulating sleeve 51 and a conical heat insulating sleeve 52, the annular heat insulating sleeve 51 is connected to the conical heat insulating sleeve 52, the annular heat insulating sleeve 51 passes through the cutting nozzle body 1 and is detachably connected to the outside of the auxiliary sealing plate 4, and at this time the conical heat insulating sleeve 52 is located outside the cutting nozzle body 1. During disassembly, the annular heat insulating sleeve 51 insulates the auxiliary sealing plate 4, and the conical heat insulating sleeve 52 insulates, so that the replacement personnel can replace the cutting nozzle body 1 conveniently without being burned.

[0028] In this embodiment, an elastic abutment member 6 is provided on the side of the annular heat-insulating sleeve 51, and an abutment groove 41 matching with the elastic abutment member 6 is provided on the outer side of the auxiliary sealing plate 4. The elastic abutment member 6 includes a limit block 61 and a guide rod 62, one end of the limit block 61 is connected to the guide rod 62, the other end of the guide rod 62 movably passes through the annular heat-insulating sleeve 51 and is fixedly connected with a abutment member 63, and the abutment member 63 is abutted against the inside of the abutment groove 41, and a spring 64 is provided on the outer side of the guide rod 62 between the abutment member 63 and the inner side wall of the annular heat-insulating sleeve 51. A clearance groove matching with the spring 64 is provided on the inner side of the annular heat-insulating sleeve 51. During installation, hold the annular heat insulation sleeve 51 and put the annular heat insulation sleeve 51 upward from the cutting nozzle body 1. During the upward movement of the annular heat insulation sleeve 51, the abutment block 63 is squeezed by the outer wall of the cutting nozzle body 1 and moves to both sides until the annular heat insulation sleeve 51 moves to the outside of the auxiliary sealing plate 4. At this time, the abutment block 63 is located inside the abutment groove 41. Under the action of the spring 64, the annular heat insulation sleeve 51 is connected to the auxiliary sealing plate 4. When the auxiliary sealing plate 4 is rotated, the annular heat insulation sleeve 51 will not rotate outside the auxiliary sealing plate 4 to affect the rotation of the auxiliary sealing plate 4, thereby improving the replacement efficiency. During disassembly, pull the limit block 61 to make the abutment block 63 come out of the abutment groove 41, and the annular heat insulation sleeve 51 and the conical heat insulation sleeve 52 can be removed downward.

[0029] In this embodiment, a sealing gasket 8 is provided on the inner side wall of the auxiliary sealing plate 4 to increase the friction between the auxiliary sealing plate 4 and the connector 7 .

[0030] In this embodiment, a first internal thread is provided on the inner side of the auxiliary sealing plate 4, and a first external thread matching the first internal thread is provided on the outer side of the mounting plate 2. The screw connection between the auxiliary sealing plate 4 and the mounting plate 2 is achieved by the matching of the first internal thread and the first external thread.

[0031] Specifically, the outer side of the threaded joint 3 is provided with a second external thread, and the inner side of the connector 7 is provided with a second internal thread matched with the second external thread. The threaded joint 3 and the connector 7 are screwed together by the cooperation of the second external thread and the second internal thread.

[0032] Working principle of this easy-to-disassemble laser cutting nozzle:

[0033] When the cutting nozzle body 1 is damaged during operation and needs to be replaced, first put the heat insulation sleeve 5 on the auxiliary sealing plate 4 and the cutting nozzle body 1, then pinch the heat insulation sleeve 5 outside the auxiliary sealing plate 4 by hand, rotate the auxiliary sealing plate 4 so that the auxiliary sealing plate 4 moves to the bottom of the connector 7, then pinch the heat insulation sleeve 5 outside the cutting nozzle body 1 again, rotate the cutting nozzle body 1 so that the threaded joint 3 is detached from the connector 7, and when installing a new cutting nozzle body 1, align the threaded joint 3 with the connector 7 and tighten it, then rotate the auxiliary sealing plate 4 again to seal the connection between the connector 7 and the threaded joint 3 and then perform normal operation. Through the detachable connection between the heat insulation sleeve 5, the auxiliary sealing plate 4 and the cutting nozzle body 1, when the cutting nozzle body 1 is damaged during operation and needs to be replaced, the replacement personnel can be protected and replaced in time with the cutting nozzle body 1, and can be replaced without waiting for its temperature to drop, which will not affect the production efficiency and will not cause burns to the replacement personnel, and it is convenient to replace and disassemble the cutting nozzle body 1. By providing the auxiliary sealing plate 4, the connection between the threaded joint 3 and the connecting head 7 can be made more stable, thereby increasing the stability of the cutting nozzle body 1 during operation.

[0034] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A laser cutting nozzle that is easy to disassemble and assemble, characterized in that: include A cutting nozzle body (1) and a connecting head (7), wherein a mounting plate (2) is mounted on the cutting nozzle body (1), wherein the mounting plate (2) is connected to a threaded joint (3), wherein the threaded joint (3) is threadedly connected to the connecting head (7), wherein an auxiliary sealing plate (4) is threadedly connected to the outer side of the mounting plate (2), wherein the auxiliary sealing plate (4) is sealed at the connection between the connecting head (7) and the threaded joint (3) after the cutting nozzle body (1) is mounted, and a heat insulating sleeve (5) is detachably provided on the auxiliary sealing plate (4) and the cutting nozzle body (1).

2. The laser cutting nozzle that is easy to disassemble and assemble according to claim 1, characterized in that: The thermal insulation sleeve (5) comprises an annular thermal insulation sleeve (51) and a conical thermal insulation sleeve (52), wherein the annular thermal insulation sleeve (51) is connected to the conical thermal insulation sleeve (52), the annular thermal insulation sleeve (51) passes through the cutting nozzle body (1) and is detachably connected to the outer side of the auxiliary sealing plate (4), and at this time, the conical thermal insulation sleeve (52) is located on the outer side of the cutting nozzle body (1).

3. The laser cutting nozzle that is easy to disassemble and assemble according to claim 2, characterized in that: An elastic abutment member (6) is disposed on the side of the annular heat-insulating sleeve (51), and an abutment groove (41) matching with the elastic abutment member (6) is formed on the outer side of the auxiliary sealing plate (4).

4. The laser cutting nozzle that is easy to disassemble and assemble according to claim 3, characterized in that: The elastic abutment member (6) comprises a limit block (61) and a guide rod (62), one end of the limit block (61) is connected to the guide rod (62), the other end of the guide rod (62) movably passes through the annular heat insulation sleeve (51) and is fixedly connected to a limit block (63), and the limit block (63) is tightly abutted against the inside of the limit groove (41), and a spring (64) is provided on the outer side of the guide rod (62) between the limit block (63) and the inner side wall of the annular heat insulation sleeve (51).

5. The laser cutting nozzle that is easy to disassemble and assemble according to claim 4, characterized in that: The inner side of the annular heat-insulating sleeve (51) is provided with a clearance groove which matches the spring (64).

6. The laser cutting nozzle that is easy to disassemble and assemble according to claim 1, characterized in that: The inner side wall of the auxiliary sealing plate (4) is provided with a sealing gasket (8).

7. The laser cutting nozzle that is easy to disassemble and assemble according to claim 1, characterized in that: The auxiliary sealing plate (4) has a first internal thread on its inner side, and the mounting plate (2) has a first external thread on its outer side that matches the first internal thread.

8. The conveniently disassembled laser cutting nozzle according to claim 1, characterized in that: The outer side of the threaded joint (3) is provided with a second external thread, and the interior of the connecting head (7) is provided with a second internal thread matching the second external thread.

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