Protection device of laser cutting head

Abstract

The utility model relates to the technical field of protection devices, and discloses a protection device of a laser cutting head, which comprises a protection tube, a cutting head main body and a gutter channel, the protection tube is internally provided with an inner cavity, the bottom of the inner cavity is provided with a support pad, the cutting head main body comprises a nozzle, the nozzle is fixedly connected to the bottom of the cutting head main body, and the gutter channel is arranged in the inner cavity. A threaded groove is formed in one side of the outer surface of the nozzle, the nozzle is inserted into the supporting pad, the nozzle is in threaded connection with the interior of the inner cavity through the threaded groove, the cutting head body is located at the top of the protection pipe, a water flowing groove is formed between the protection pipe and the inner cavity, a water injection opening is formed in the top of the protection pipe, and a water outlet is formed in the top of the protection pipe. Water flow is injected into the water flowing groove, the rubber plug is used for blocking the water injection opening, a worker connects the protective pipe to the nozzle of the cutting head body in a threaded mode, the nozzle is connected to the supporting pad in an inserted mode, and the water flow in the water flowing groove cools the cutting head in the inner cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of protection devices, in particular to a protection device for a laser cutting head. Background Art

[0002] The components of a laser cutting head of a laser cutting machine include: a nozzle, a focusing lens and a focusing tracking system. In a laser cutting device, the main function of the laser head is to focus the divergent laser generated by the laser to make it a highly concentrated energy beam, and cooperate with the laser to eject a cutting gas to blow away residues or assist melting, and finally achieve the effect of precise cutting.

[0003] An existing laser cutting machine head with a protection device (publication number: CN104942449A) has at least the following drawbacks: Although the device protects the laser cutting head, after the laser cutting head stops operating, the temperature of the nozzle is too high, and the protection device does not have a heat dissipation function, which results in a slow heat dissipation speed of the nozzle of the laser cutting head and is not conducive to the cooling of the laser cutting head. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the drawbacks existing in the prior art, and to propose a protection device for a laser cutting head.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A protection device for a laser cutting head includes a protection tube, a cutting head main body and a water flow groove. An inner cavity is opened inside the protection tube, a support pad is installed at the bottom of the inner cavity, the cutting head main body includes a nozzle, the nozzle is fixedly connected to the bottom of the cutting head main body, a threaded groove is opened on one side of the outer surface of the nozzle, the nozzle is inserted into the support pad, and the nozzle is threadedly connected to the inside of the inner cavity through the threaded groove. The cutting head main body is located at the top of the protection tube, a water flow groove is opened between the protection tube and the inner cavity, a water injection port is opened at the top of the protection tube, and the water injection port is connected to the top of the water flow groove in a penetrating manner.

[0007] As a further scheme of the utility model, a limiting groove is opened at the top of the protection tube, the water injection port is connected to the limiting groove in a penetrating manner, a rubber plug is arranged inside the limiting groove, the rubber plug is inserted into the water injection port, and a limiting rope is fixedly installed on one side of the outside of the rubber plug.

[0008] As a further scheme of the utility model, one end of the limiting rope is fixedly connected to the inner wall of the limiting groove, the cutting head main body is arranged at the top of the limiting groove, a bottom cavity is opened on one side of the protection tube away from the inner cavity, and the water flow groove is located at the top of the bottom cavity.

[0009] As a further solution of the present utility model, a bottom plate is provided at the bottom of the bottom cavity, and the bottom plate is fixedly connected to the bottom of the protection tube by bolts. A retention frame is fixedly installed on the top of the bottom plate, and the retention frame is inserted into the bottom cavity.

[0010] As a further solution of the present utility model, a blower is provided inside the bottom cavity, and the blower is fixedly installed in the middle of the retention frame. A number of ventilation holes are provided on both the retention frame and the support pad, and the inner cavity is communicated with the bottom cavity through the ventilation holes.

[0011] As a further solution of the present utility model, a filter screen is provided at the bottom of the retention frame, and the filter screen is integrally installed on the inner wall of the bottom plate. A rubber sleeve is provided on one side of the bottom plate, and the rubber sleeve is fixedly connected to the outside of the protection tube. The top of the rubber sleeve is attached to the bottom of the cutting head body.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] 1. After the cutting head body is used up, the protection tube is penetrated through the nozzle, and the protection tube is rotated. The inner cavity is threadedly connected with the thread groove outside the nozzle, so that the protection tube is fixed on the nozzle of the cutting head body. There is a water flow groove between the protection tube and the inner cavity. The staff uses a syringe to inject water into the water flow groove and plugs the water injection port with a rubber plug. The staff threadedly connects the protection tube to the nozzle of the cutting head body, and the nozzle is inserted into the support pad. The water flow inside the water flow groove cools the cutting head inside the inner cavity. This device is convenient for the cutting head body to dissipate heat after processing.

[0014] 2. In order to prevent the water flow temperature from being heated by the cutting head body and affecting heat dissipation, the staff starts the blower. The blower extracts the air inside the inner cavity. Ventilation holes are provided on the inner cavity, the support pad and the retention frame. The high-temperature air is discharged from the protection tube through the ventilation holes. A filter screen is installed at the bottom of the bottom plate. When the blower is turned off, the filter screen filters the air flowing inside and outside the protection tube to prevent dust from entering the inner cavity and causing wear to the cutting head body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a split structural schematic diagram of a protection device for a laser cutting head proposed by the present utility model;

[0016] Figure 2 is a cross-sectional schematic diagram of the water flow groove of a protection device for a laser cutting head proposed by the present utility model;

[0017] Figure 3 is a structural schematic diagram of the cutting head body of a protection device for a laser cutting head proposed by the present utility model;

[0018] In the figure: 1. Protection tube; 101. Inner cavity; 102. Support pad; 103. Limit groove; 2. Cutting head body; 201. Nozzle; 202. Thread groove; 3. Water flow groove; 4. Water injection port; 5. Rubber plug; 6. Limit rope; 7. Ventilation hole; 8. Bottom cavity; 9. Fan; 10. Retaining frame; 11. Bottom plate; 1101. Filter screen; 12. Rubber sleeve. Detailed implementation mode

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Refer to Figures 1 - 3 , a protection device for a laser cutting head, including a protection tube 1, a cutting head body 2 and a water flow groove 3. An inner cavity 101 is opened inside the protection tube 1. A support pad 102 is installed at the bottom of the inner cavity 101. The cutting head body 2 includes a nozzle 201. The nozzle 201 is fixedly connected to the bottom of the cutting head body 2. A thread groove 202 is opened on one side of the outer surface of the nozzle 201. The nozzle 201 is inserted into the support pad 102. The nozzle 201 is threadedly connected to the inside of the inner cavity 101 through the thread groove 202. The cutting head body 2 is located at the top of the protection tube 1. A water flow groove 3 is opened between the protection tube 1 and the inner cavity 101. A water injection port 4 is opened at the top of the protection tube 1. The water injection port 4 is connected to the top of the water flow groove 3 in a penetrating manner.

[0023] In use, after the cutting head body 2 is used up, the protective tube 1 is penetrated through the nozzle, and the protective tube 1 is rotated. The inner cavity is threadedly connected to the threaded groove outside the nozzle 201, so that the protective tube 1 is fixed on the nozzle of the cutting head body 2. There is a water flow groove 3 between the protective tube 1 and the inner cavity 101. The staff uses a syringe to inject water into the water flow groove 3, and uses a rubber plug 5 to block the water injection port 4. The staff threadedly connects the protective tube 1 to the nozzle 201 of the cutting head body 2. The nozzle 201 is inserted into the support pad 102. The water flow inside the water flow groove 3 cools the cutting head inside the inner cavity 101. This device facilitates the heat dissipation of the cutting head body 2 after processing, and the support pad 102 also has a protective function for the nozzle 201.

[0024] In this embodiment, a limiting groove 103 is provided at the top of the protective tube 1. The water injection port 4 is connected to the limiting groove 103 in a penetrating manner. A rubber plug 5 is provided inside the limiting groove 103. The rubber plug 5 is inserted into the water injection port 4. A limiting rope 6 is fixedly installed on one side of the outside of the rubber plug 5.

[0025] In use, to prevent the loss of the rubber plug 5, the rubber plug 5 is connected to the limiting groove 103 through the limiting rope 6. After the rubber plug 5 blocks the water injection port 4, the limiting rope 6 is movably connected to the limiting groove 103 to prevent the limiting rope 103 from bulging and affecting the fitting of the protective tube 1 and the cutting head body 2.

[0026] In this embodiment, one end of the limiting rope 6 is fixedly connected to the inner wall of the limiting groove 103. The cutting head body 2 is provided at the top of the limiting groove 103. A bottom cavity 8 is provided on the side of the protective tube 1 away from the inner cavity 101. The water flow groove 3 is located at the top of the bottom cavity 8.

[0027] In use, the staff pulls out the rubber plug 5 from the water injection port 4 through the limiting rope 6, which facilitates the positioning connection of the rubber plug 5 on the protective tube 1 and prevents the loss of the rubber plug 5. Part of the water flow groove 3 surrounds between the inner cavity 101 and the support pad 102, which facilitates the cooling of the nozzle 201 inside the support pad 101.

[0028] In this embodiment, a bottom plate 11 is provided at the bottom of the bottom cavity 8. The bottom plate 11 is fixedly connected to the bottom of the protective tube 1 by bolts. A retaining frame 10 is fixedly installed on the top of the bottom plate 11. The retaining frame 10 is inserted into the bottom cavity 8.

[0029] In use, to prevent the heat of the cutting head body 2 from heating the water flow temperature and affecting heat dissipation, the staff starts the fan 9. The fan 9 extracts the air inside the inner cavity 101, and the high-temperature air is discharged from the protective tube 1 through the ventilation hole 7.

[0030] In this embodiment, a fan 9 is provided inside the bottom cavity 8. The fan 9 is fixedly installed in the middle of the retaining frame 10. A number of ventilation holes 7 are provided on both the retaining frame 10 and the support pad 102. The inner cavity 101 and the bottom cavity 8 are connected through the ventilation holes 7.

[0031] During use, there is a certain space between the retainer 10 and the bottom plate 11, which facilitates the flow of air. When the fan 9 is turned off, the filter net 1101 filters the air flowing inside and outside the protective tube 1 to prevent dust from entering the inner cavity 101 and wearing the cutting head body 2.

[0032] In this embodiment, a filter net 1101 is provided at the bottom of the retainer 10. The filter net 1101 is integrally installed on the inner wall of the bottom plate 11. A rubber sleeve 12 is provided on one side of the bottom plate 11. The rubber sleeve 12 is fixedly connected to the outside of the protective tube 1, and the top of the rubber sleeve 12 is fitted and connected to the bottom of the cutting head body 2.

[0033] During use, several curved surfaces are provided on both sides of the outside of the rubber sleeve 12, which facilitates the staff to exert force to rotate the protective tube 1, and the outside of the bottom plate 11 is fitted to the inner wall of the rubber sleeve 12.

[0034] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: After the use of the cutting head body 2 is completed, the protective tube 1 is penetrated through the nozzle, and the protective tube 1 is rotated. The inner cavity is threadedly connected to the threaded groove outside the nozzle 201, so that the protective tube 1 is fixed on the nozzle of the cutting head body 2. A water flow groove 3 is provided between the protective tube 1 and the inner cavity 101. The staff uses a syringe to inject water into the water flow groove 3, and uses a rubber plug 5 to block the water injection port 4. The staff threadedly connects the protective tube 1 to the nozzle 201 of the cutting head body 2, and the nozzle 201 is inserted into the support pad 102. The water flow inside the water flow groove 3 cools the cutting head inside the inner cavity 101. In order to prevent the water flow temperature from being heated by the cutting head body 2 and affecting heat dissipation, the staff starts the fan 9. The fan 9 extracts the air inside the inner cavity 101. Ventilation holes 7 are provided on the inner cavity 101, the support pad 102 and the retainer 10. The high-temperature air is discharged from the protective tube 1 through the ventilation holes 7. A filter net 1101 is installed at the bottom of the bottom plate 11. When the fan 9 is turned off, the filter net 1101 filters the air flowing inside and outside the protective tube 1 to prevent dust from entering the inner cavity 101 and wearing the cutting head body 2. This device facilitates the heat dissipation of the cutting head body 2 after processing, and the support pad 102 also has a protective function for the nozzle 201.

[0035] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A protection device for a laser cutting head, comprising a protective tube (1), a cutting head main body (2) and a water chute (3), characterized in that: The interior of the protective tube (1) is provided with an inner cavity (101). A support pad (102) is installed at the bottom of the inner cavity (101). The cutting head body (2) includes a nozzle (201). The nozzle (201) is fixedly connected to the bottom of the cutting head body (2). A threaded groove (202) is formed on one side of the outer surface of the nozzle (201). The nozzle (201) is inserted into the support pad (102). The nozzle (201) is threadedly connected to the inside of the inner cavity (101) through the threaded groove (202). The cutting head body (2) is located at the top of the protective tube (1). A water flow groove (3) is formed between the protective tube (1) and the inner cavity (101). A water injection port (4) is formed at the top of the protective tube (1). The water injection port (4) is connected to the top of the water flow groove (3) in a through manner.

2. The protection device for a laser cutting head according to claim 1, characterized in that, A limiting groove (103) is formed at the top of the protective tube (1). The water injection port (4) is connected to the limiting groove (103) in a through manner. A rubber plug (5) is arranged inside the limiting groove (103). The rubber plug (5) is inserted into the water injection port (4). A limiting rope (6) is fixedly installed on one side of the outside of the rubber plug (5).

3. The protection device of a laser cutting head according to claim 2, characterized in that, One end of the limiting rope (6) is fixedly connected to the inner wall of the limiting groove (103). The cutting head body (2) is arranged at the top of the limiting groove (103). A bottom cavity (8) is formed on one side of the protective tube (1) away from the inner cavity (101). The water flow groove (3) is located at the top of the bottom cavity (8).

4. The protection device for a laser cutting head according to claim 3, wherein A bottom plate (11) is arranged at the bottom of the bottom cavity (8). The bottom plate (11) is fixedly connected to the bottom of the protective tube (1) by bolts. A retaining frame (10) is fixedly installed on the top of the bottom plate (11). The retaining frame (10) is inserted into the bottom cavity (8).

5. The protection device for a laser cutting head according to claim 4, characterized in that A fan (9) is arranged inside the bottom cavity (8). The fan (9) is fixedly installed in the middle of the retaining frame (10). A number of ventilation holes (7) are formed in both the retaining frame (10) and the support pad (102). The inner cavity (101) is communicated with the bottom cavity (8) through the ventilation holes (7).

6. The protection device for a laser cutting head according to claim 5, characterized in that, A filter screen (1101) is arranged at the bottom of the retaining frame (10). The filter screen (1101) is integrally installed on the inner wall of the bottom plate (11). A rubber sleeve (12) is arranged on one side of the bottom plate (11). The rubber sleeve (12) is fixedly connected to the outside of the protective tube (1). The top of the rubber sleeve (12) is in close contact with the bottom of the cutting head body (2).

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