Laser cutting head cooling mechanism

Abstract

The utility model relates to the technical field of laser cutting, and discloses a laser cutting head cooling mechanism which comprises a laser emitter body, one side of the laser emitter body is connected with a rotating disc through a driving assembly, and the periphery of the rotating disc is connected with laser nozzles through embedding assemblies. Wherein the top side input end of one laser nozzle is located at the bottom side output end of the laser emitter body, the other side of the laser emitter body is connected with two connecting pieces through an unfolding mechanism, the bottom sides of the connecting pieces are fixedly connected with cooling jackets, the two cooling jackets are in mirror symmetry, and the two cooling jackets are in mirror symmetry. The two cooling sleeves are arranged on the outer wall of the other laser nozzle in a sleeving mode. According to the laser cutting device, when one of the laser nozzles performs laser focusing and performs cutting work, the other laser nozzles perform cooling and standby work, and direct cooling work on the heating laser nozzles is avoided, so that the service life of a cooling part is prolonged, and the laser cutting efficiency is ensured.

Description

Technical Field

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

[0002] The components of the laser cutting machine cutting head are: nozzle, focusing lens and focusing tracking system. The form of the cutting nozzle and the selection of nozzle size have a great influence on the cutting quality. There are three main forms of cutting nozzles: parallel, convergent and cone. Among them, under the action of high-energy laser beam, the cutting head will be affected by high temperature, and overheating may cause damage or premature wear of the cutting head, so a laser cutting head cooling mechanism is required.

[0003] After searching, the cooling laser cutting head and laser cutting machine of announcement number CN214079801U include a body, the body includes a barrel part and an inverted cone part, the barrel part and the inverted cone part are coaxially fixedly connected; a water cooling jacket is provided on the barrel part, a cold circulation channel is provided in the water cooling jacket, and the cold circulation channel is arranged around the barrel part; a water inlet and a water outlet communicated with the cold circulation channel are provided on the water cooling jacket, and cooling water flows out from the water outlet after entering the cold circulation channel from the water inlet; an air cooling jacket is provided on the inverted cone part, an air duct opening communicated with the outside is formed between the air cooling jacket and the inverted cone part, and an air inlet communicated with the air duct opening is provided on the air cooling jacket, and cooling air enters from the air inlet and is blown out from the opening of the air duct opening; the barrel part is cooled by water cooling circulation, and the inverted cone part is cooled by air cooling, and the two cooling methods are carried out simultaneously, so as to realize efficient cooling of the laser cutting head, ensure the constant temperature of the laser cutting head during operation, and improve the cutting quality;

[0004] Based on the above patent, by arranging a water cooling device and an air cooling device on the laser cutting head, that is, using a water cooling cycle to cool the barrel part, and using air cooling to cool the inverted cone part, the two cooling methods are carried out simultaneously, thereby achieving efficient cooling of the laser cutting head, ensuring the constant temperature of the laser cutting head during operation, and improving the cutting quality. Although the cooling efficiency can be guaranteed, this cooling form is installed on the part that continues to heat up to cool it, and then the cooling structure will also cause loss due to continuous high temperature, affecting the service life. In this regard, in response to this technical problem, the present application proposes a laser cutting head cooling mechanism. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a cooling mechanism for a laser cutting head, aiming to improve the problem in the prior art that the cooling structure mounted on the continuously heating part will also be worn out due to the continuous high temperature, thereby affecting the service life.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A laser cutting head cooling mechanism comprises a laser emitter body, one side of the laser emitter body is connected to a turntable via a driving assembly, the four sides of the turntable are connected to laser nozzles via interlocking assemblies, the top input end of one of the laser nozzles is located on the bottom output end of the laser emitter body, the other side of the laser emitter body is connected to two connecting parts via an unfolding mechanism, a cooling jacket is fixedly connected to the bottom side of the connecting parts, the two cooling jackets are mirror-symmetrical, the two cooling jackets are mounted on the outer wall of another laser nozzle, and a cooling assembly is arranged inside the cooling jacket.

[0008] Furthermore, the deployment mechanism includes a gear fixedly connected to the top of the connecting member, and adjacent sides of two of the gears are meshedly connected with racks, and the racks are connected to the laser emitter body through a pushing assembly.

[0009] Furthermore, the pushing assembly includes an electric push rod located on the top side of the rack, the non-driving end of the electric push rod is fixedly connected to the other side of the laser emitter body through a fixing frame, and the driving end of the electric push rod is fixedly connected to the top side of the rack.

[0010] Furthermore, the cooling assembly includes a flow channel opened inside the cooling jacket, one end of the flow channel is fixedly connected to a liquid inlet, the other end of the flow channel is fixedly connected to a liquid outlet, and the liquid inlet and the liquid outlet are both located on the outer wall of the cooling jacket.

[0011] Furthermore, the driving assembly includes a motor located on the top side of the turntable, the non-driving end of the motor is fixedly connected to one side of the laser emitter body through a second fixing frame, and the driving end of the motor is fixedly connected to the top center of the turntable.

[0012] Furthermore, the interlocking assembly includes an interlocking piece, a plurality of interlocking grooves are formed on the outer periphery of the top side of the turntable, one end of the interlocking piece is fixedly connected to the outer wall of the laser nozzle, and the other end of the interlocking piece is interference fit inside the interlocking groove.

[0013] Furthermore, an adapting groove is provided on one side of the cooling sleeve, and the shape of the adapting groove corresponds to the shape of the laser nozzle.

[0014] Furthermore, a focusing lens is fixedly connected inside the laser nozzle.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, by separating the laser emitter body for emitting laser and the laser nozzle used for focusing but generating heat, and providing a plurality of them, it is possible to focus the laser on one of the laser nozzles and perform cutting work while the remaining laser nozzles are cooled and on standby, thereby avoiding cooling work directly on the heated laser nozzle, thereby extending the service life of the cooling component and ensuring the efficiency of laser cutting.

[0017] 2. In the present invention, through the cooperation between the turntable, the engaging groove and the engaging piece, a separate module structure can be used to maintain and replace a single component, thereby greatly reducing costs and improving convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a cooling mechanism for a laser cutting head proposed in the utility model;

[0019] Figure 2 This is a schematic diagram of the rear structure of a cooling mechanism for a laser cutting head proposed in the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of a nozzle of a cooling mechanism for a laser cutting head proposed by the utility model;

[0021] Figure 4 This is a schematic diagram of the unfolded structure of a cooling jacket of a cooling mechanism for a laser cutting head proposed by the utility model;

[0022] Figure 5 This is a schematic diagram of the position of a flow path channel of a cooling mechanism of a laser cutting head proposed by the utility model;

[0023] Figure 6 This is a structural schematic diagram of an adapter slot of a cooling mechanism for a laser cutting head proposed by the utility model;

[0024] Figure 7 The utility model is a schematic structural diagram of an interlocking part of a cooling mechanism for a laser cutting head.

[0025] Legend:

[0026] 1. Laser transmitter body; 2. Laser nozzle; 3. Motor; 4. Turntable; 5. Fitting; 6. Fitting groove; 7. Electric push rod; 8. Rack; 9. Gear; 10. Connector; 11. Cooling jacket; 12. Liquid inlet; 13. Liquid outlet; 14. Flow channel; 15. Adapter groove; 16. Focusing lens. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-3 The utility model provides an embodiment: a cooling mechanism for a laser cutting head, comprising a laser emitter body 1, a non-driving end of a motor 3 located on the top side of a turntable 4 is fixedly connected to one side of the laser emitter body 1 through a fixing frame 2, a driving end of the motor 3 is fixedly connected to the top center of the turntable 4, a focusing lens 16 is fixedly connected to the inside of a laser nozzle 2, and a top input end of one of the laser nozzles 2 is located on a bottom output end of the laser emitter body 1;

[0029] Specifically, the laser emitter body 1 is used to emit laser for cutting. The laser is focused along the refraction of the focusing lens 16 to form a high-temperature beam, which is output from the bottom output port of the laser nozzle 2. By separating the laser emitter body 1 for emitting laser and the laser nozzle 2 for focusing but generating heat, and setting multiple laser emitters, it is possible to focus the laser in one of them and perform cutting work while the remaining laser nozzles 2 are cooled and on standby, avoiding direct cooling work on the heated laser nozzle 2, so as to extend the service life of the cooling components. The motor 3 drives the turntable 4 to rotate through the drive of the motor 3, so that the laser nozzle 2 connected to the turntable 4 rotates with the turntable 4, so that the overheated laser nozzle 2 is separated from the laser emitter body 1, so that the other temperature moves normally to the bottom output end of the laser emitter body 1, and the laser cutting work continues.

[0030] Reference Figure 4 , Figure 5 and Figure 6 , two gears 9 fixedly connected to the top of the connecting member 10 are meshedly connected with a rack 8 on the adjacent side, the non-driving end of the electric push rod 7 located on the top side of the rack 8 is fixedly connected to the other side of the laser transmitter body 1 through a fixing frame 1, the driving end of the electric push rod 7 is fixedly connected to the top side of the rack 8, and a cooling jacket 11 is fixedly connected to the bottom side of the connecting member 10. The two cooling jackets 11 are mirror-symmetrical, and the two cooling jackets 11 are sleeved on the outer wall of another laser nozzle 2. An adapter groove 15 is provided on one side of the cooling jacket 11, and the shape of the adapter groove 15 corresponds to the shape of the laser nozzle 2. One end of the flow path channel 14 provided in the cooling jacket 11 is fixedly connected to a liquid inlet 12, and the other end of the flow path channel 14 is fixedly connected to a liquid outlet 13, and the liquid inlet 12 and the liquid outlet 13 are both located on the outer wall of the cooling jacket 11;

[0031] Specifically, the liquid inlet 12 and the liquid outlet 13 are connected to the pipelines for conveying circulating coolant, respectively, so that the coolant cools the cooling jacket 11 in the flow path channel to assist the cooling of the laser nozzle 2. Through the adapter groove 15, the laser nozzle 2 can be completely wrapped inside the cooling jacket 11 to increase the contact between the laser nozzle 2 and the cooling jacket 11, so as to increase the rate of heat transfer. The rack 8 is pulled by the electric push rod 7, and the displaced rack 8 engages the transmission gear 9, so that the gear 9 drives the connecting member 10 connected thereto to rotate, change the angle, and change the angle of the cooling jacket 11 fixedly connected to the connecting member 10, so that the cooling jacket 11 is closed and sleeved on the outer wall of the overheated laser nozzle 2. At this time, the coolant enters the flow path channel 14 in the cooling jacket 11 along the liquid inlet 12, so that the temperature of the cooling jacket 11 is reduced, and then the temperature of the overheated laser nozzle 2 is transferred to the cooling jacket 11, so as to achieve cooling. When the temperature rises, the used coolant flows out along the liquid outlet 13.

[0032] Reference Figure 7 A plurality of interlocking grooves 6 are provided on the outer periphery of the top side of the turntable 4, one end of the interlocking member 5 is fixedly connected to the outer wall of the laser nozzle 2, and the other end of the interlocking member 5 is interference-fitted inside the interlocking groove 6;

[0033] Specifically, when replacing an aged laser nozzle 2, the aged laser nozzle 2 is removed by disengaging the other end of the fitting 5 from the fitting groove 6, and a new laser nozzle 2 is reinstalled on the turntable 4 through the fitting 5, and then the separate modular structure is used to maintain and replace a single component, thereby greatly reducing costs and improving convenience.

[0034] Working principle: When cooling the laser cutting head, the motor 3 drives the turntable 4 to rotate, so that the laser nozzle 2 connected to the turntable 4 rotates with the turntable 4, so that the overheated laser nozzle 2 is separated from the laser emitter body 1, so that the other temperature moves normally to the bottom output end of the laser emitter body 1, and the laser cutting work continues. The overheated laser nozzle 2 will be driven by the turntable 4 to the bottom side of the two cooling sleeves 11, and then the electric push rod 7 pulls the rack 8, and the displaced rack 8 engages the transmission gear 9, so that the gear 9 drives the connecting piece 10 connected thereto. Rotate, change the angle, and change the angle of the cooling jacket 11 connected and fixed to the connector 10, so that the cooling jacket 11 is closed and sleeved on the outer wall of the overheated laser nozzle 2. At this time, the coolant enters the flow path 14 in the cooling jacket 11 along the liquid inlet 12, so that the temperature of the cooling jacket 11 is reduced, and then the temperature of the overheated laser nozzle 2 is transferred to the cooling jacket 11, so as to achieve cooling. When the temperature rises, the used coolant flows out along the liquid outlet 13. When the laser nozzle 2 is replaced next time, the cooling jacket 11 will be opened, and the laser nozzle 2 after cooling will be driven by the turntable 4 to separate from the cooling jacket 11. When replacing the aged laser nozzle 2, the aged laser nozzle 2 is disassembled by separating the other end of the fitting 5 from the fitting groove 6, and the new laser nozzle 2 is reinstalled on the turntable 4 through the fitting 5.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling mechanism for a laser cutting head, comprising a laser emitter body (1), characterized in that: One side of the laser emitter body (1) is connected to a turntable (4) via a driving component, and the four sides of the turntable (4) are connected to laser nozzles (2) via interlocking components, wherein the top input end of one of the laser nozzles (2) is located on the bottom output end of the laser emitter body (1), and the other side of the laser emitter body (1) is connected to two connecting members (10) via an unfolding mechanism, and a cooling jacket (11) is fixedly connected to the bottom side of the connecting member (10), and the two cooling jackets (11) are mirror-symmetrical, and the two cooling jackets (11) are sleeved on the outer wall of another of the laser nozzles (2), and a cooling assembly is arranged inside the cooling jacket (11).

2. A laser cutting head cooling mechanism according to claim 1, characterized in that: The unfolding mechanism comprises a gear (9) fixedly connected to the top of the connecting member (10), and two adjacent sides of the gears (9) are meshedly connected with racks (8), and the racks (8) are connected to the laser emitter body (1) via a pushing assembly.

3. A laser cutting head cooling mechanism according to claim 2, characterized in that: The pushing assembly comprises an electric push rod (7) located on the top side of the rack (8), the non-driving end of the electric push rod (7) is fixedly connected to the other side of the laser transmitter body (1) through a fixing frame, and the driving end of the electric push rod (7) is fixedly connected to the top side of the rack (8).

4. A laser cutting head cooling mechanism according to claim 1, characterized in that: The cooling component comprises a flow path channel (14) opened inside the cooling jacket (11), one end of the flow path channel (14) is fixedly connected to a liquid inlet (12), and the other end of the flow path channel (14) is fixedly connected to a liquid outlet (13), and the liquid inlet (12) and the liquid outlet (13) are both located on the outer wall of the cooling jacket (11).

5. The cooling mechanism for a laser cutting head according to claim 1, characterized in that: The driving assembly comprises a motor (3) located on the top side of a turntable (4); a non-driving end of the motor (3) is fixedly connected to one side of a laser emitter body (1) via a second fixing frame; and a driving end of the motor (3) is fixedly connected to the center of the top side of the turntable (4).

6. A cooling mechanism for a laser cutting head according to claim 1, characterized in that: The interlocking assembly comprises an interlocking part (5), a plurality of interlocking grooves (6) are provided on the outer periphery of the top side of the turntable (4), one end of the interlocking part (5) is fixedly connected to the outer wall of the laser nozzle (2), and the other end of the interlocking part (5) is interference-fitted inside the interlocking groove (6).

7. The laser cutting head cooling mechanism according to claim 1, characterized in that: An adaption groove (15) is provided on one side of the cooling jacket (11), and the shape of the adaption groove (15) corresponds to the shape of the laser nozzle (2).

8. The laser cutting head cooling mechanism according to claim 1, characterized in that: A focusing lens (16) is fixedly connected inside the laser nozzle (2).

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