Water-jet guided laser cutting head

Abstract

The invention discloses a water-guided laser cutting head, which belongs to the technical field of laser cutting and comprises a light source connecting pipe, the bottom end of the light source connecting pipe is in threaded connection with a high-pressure water cavity block, a focus lens group is placed in the light source connecting pipe, the high-pressure water cavity block is fixedly connected with a protective lens and a nozzle, and the focus lens group, the protective lens and the nozzle are sequentially arranged from top to bottom. Two clamping plates are arranged in the light source connecting pipe, the focus lens set is located between the two clamping plates, a water inlet pipe is fixedly connected to the high-pressure water cavity block, and the water inlet pipe is communicated with the high-pressure water cavity block; the invention discloses a water-jet-guided laser cutting head, and aims to solve the problems that a water-jet-guided laser cutting head in the prior art can only be assembled with a lens with a fixed specification, the application range is small, lenses with different specifications cannot be replaced for use, most water-jet-guided laser cutting heads are assembled by adopting threaded connection, and the threaded connection mode is easy to loosen in the use process, so that the water-jet-guided laser cutting head is damaged. The water-guided laser cutting head is not stable, and the cutting effect is influenced.

Description

Technical Field

[0001] The present invention relates to the field of laser cutting technology, and more specifically to a water-conducting laser cutting head. Background Art

[0002] Water-conducting laser is a laser technology that uses water as a conductor. Its working principle is to focus the laser beam on the water flow and use the conductive properties of water to conduct the laser beam to the target object, thereby realizing operations such as processing, cutting, and drilling on the target object.

[0003] At present, when water-conducting laser is used to cut objects, it is necessary to spray water and focus the laser through the cutting head so that the laser can cut the object in the water flow. However, after long-term use, the lens of the water-conducting laser cutting head needs to be replaced. The existing water-conducting laser cutting head can usually only be equipped with lenses of fixed specifications, with a small scope of application, and lenses of different specifications cannot be replaced and used. Moreover, most water-conducting laser cutting heads are usually assembled using threaded connections, which are prone to loosening during use, resulting in instability of the water-conducting laser cutting head and affecting the cutting effect. Summary of the invention

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a water-conducting laser cutting head, aiming to solve the problem that the water-conducting laser cutting head in the prior art can usually only be equipped with lenses of fixed specifications, has a small scope of application, and cannot replace lenses of different specifications. Moreover, most water-conducting laser cutting heads are usually assembled using threaded connections, which are prone to loosening during use, resulting in instability of the water-conducting laser cutting head and affecting the cutting effect.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions:

[0008] A water-guided laser cutting head comprises a light source connecting pipe, the bottom end of which is threadedly connected to a high-pressure water cavity block, a focusing lens group is placed in the light source connecting pipe, a protective lens and a nozzle are fixedly connected to the high-pressure water cavity block, and the focusing lens group, the protective lens and the nozzle are arranged in sequence from top to bottom, two clamping plates are arranged in the light source connecting pipe, and the focusing lens group is located between the two clamping plates, a water inlet pipe is fixedly connected to the high-pressure water cavity block, and the water inlet pipe is connected to the high-pressure water cavity block, an elastic component, a synchronization component and a locking component are arranged between the two clamping plates and the light source connecting pipe, the elastic component is used to control the two clamping plates to elastically clamp and fix the focusing lens group in the light source connecting pipe, the synchronization component controls the two clamping plates to move simultaneously, and prevents the focusing lens group from being offset when being clamped and fixed by the two clamping plates, the locking mechanism is used to fix the two clamping plates, so that the clamping of the focusing lens group by the two clamping plates remains stable, and a limiting component is provided between the light source connecting pipe and the high-pressure water cavity block, and the limiting component is used to stabilize the connection between the light source connecting pipe and the high-pressure water cavity block.

[0009] As a preferred solution of the present invention, the elastic component includes two fixed tubes, the two fixed tubes are fixedly connected to the outer surface of the light source connecting tube, and the two fixed tubes are communicated with the light source connecting tube, a pull rod is movably passed through the two fixed tubes, and the ends of the two pull rods that are close to each other are respectively fixedly connected to two clamping plates, the outer surfaces of the two pull rods are sleeved with springs, and the two springs are respectively located in the two fixed tubes corresponding to the two clamping plates.

[0010] As a preferred solution of the present invention, the synchronization component includes two fixed plates, both of which are fixedly connected to the light source connecting tube, both of which are fixedly connected to a group of racks, both of which are rotatably connected to gears, and the two groups of racks are meshingly connected to the two gears.

[0011] As a preferred solution of the present invention, the locking assembly includes a threaded rod, the threaded rod movably passes through a pull rod, a fixing nut is fixedly connected to one of the fixing tubes, and the threaded rod corresponds to the fixing nut.

[0012] As a preferred solution of the present invention, the limit assembly includes two limit rotating rods, both of which are rotatably connected to the high-pressure water chamber block, and two fixed blocks are fixedly connected to the light source connecting tube, and both of the fixed blocks are provided with limit holes, and both of the limit rotating rods are movably penetrated by limit rods, and the two limit rods are respectively matched with the two limit holes.

[0013] As a preferred solution of the present invention, two stabilizing blocks are fixedly connected to the two fixing plates, and the two sets of racks are slidably connected to the four stabilizing blocks respectively.

[0014] As a preferred solution of the present invention, a pressing pad is arranged in the light source connecting tube, and the pressing pad is located on the upper side of the focusing lens group.

[0015] As a preferred solution of the present invention, the bottom end of the high-pressure water chamber block is threadedly connected to a positioning tube, and the nozzle is located in the positioning tube. Two laser positioning lights are fixedly connected to the outer surface of the positioning tube, and the two laser positioning lights are electrically connected to an external power supply.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) In this solution, the elastic component can elastically clamp focusing lens groups of different specifications and sizes through two clamping plates, which facilitates the replacement of focusing lens groups of different specifications and allows the replaced focusing lens groups to be stably used in the light source connecting tube. The synchronization component enables the two clamping plates to move simultaneously to ensure the accuracy of the correspondence between the focusing lens group and the protective lens. The locking component cooperates with the elastic component and the synchronization component to fix the two clamping plates, so that focusing lens groups of different specifications can be stably used in the clamping plates, and the application range is wide.

[0019] (2) In this solution, a limit assembly is added to the water-conducting laser cutting head on the basis of the threaded connection assembly. The limit assembly can make the water-conducting laser cutting head more stable after assembly, and effectively prevent the water-conducting laser cutting head from loosening, causing instability of the water-conducting laser cutting head and affecting the cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of the present invention;

[0021] Figure 2 An exploded view of the present invention;

[0022] Figure 3 A perspective view of the present invention;

[0023] Figure 4 It is the main cross-sectional view of the present invention;

[0024] Figure 5 is a side sectional view of the present invention;

[0025] Figure 6 It is a first stereogram of a part of the structure of the present invention;

[0026] Figure 7 For the present invention Figure 6 A magnified image of point A;

[0027] Figure 8 It is a second stereoscopic diagram of a part of the structure in the present invention.

[0028] Description of the numbers in the figure:

[0029] 1. Light source connecting pipe; 2. High-pressure water chamber block; 3. Focusing lens group; 4. Protective lens; 5. Nozzle; 6. Clamping plate; 701. Fixed tube; 702. Pull rod; 703. Spring; 801. Fixed plate; 802. Rack; 803. Gear; 901. Threaded rod; 902. Fixed nut; 101. Limiting rotating rod; 102. Fixed block; 103. Limiting hole; 104. Limiting rod; 11. Stabilizing block; 12. Pressure pad; 13. Positioning tube; 14. Laser positioning light; 15. Water inlet pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example:

[0034] See also Figure 1-4A water-guided laser cutting head comprises a light source connecting tube 1, the bottom end of which is threadedly connected to a high-pressure water cavity block 2, a focusing lens group 3 is placed in the light source connecting tube 1, a protective lens 4 and a nozzle 5 are fixedly connected to the high-pressure water cavity block 2, and the focusing lens group 3, the protective lens 4 and the nozzle 5 are arranged in sequence from top to bottom, two clamping plates 6 are arranged in the light source connecting tube 1, and the focusing lens group 3 is located between the two clamping plates 6, a water inlet pipe 15 is fixedly connected to the high-pressure water cavity block 2, and the water inlet pipe 15 is connected to the high-pressure water cavity block 2, and the two clamping plates 6 are connected to the light source connecting tube 1 is provided with an elastic component, a synchronization component and a locking component, the elastic component is used to control the two clamping plates 6 to elastically clamp and fix the focusing lens group 3 in the light source connecting tube 1, the synchronization component controls the two clamping plates 6 to move simultaneously to prevent the focusing lens group 3 from being offset when being clamped and fixed by the two clamping plates 6, the locking mechanism is used to fix the two clamping plates 6 so that the clamping of the focusing lens group 3 by the two clamping plates 6 remains stable, and a limiting component is provided between the light source connecting tube 1 and the high-pressure water cavity block 2, and the limiting component is used to stabilize the connection between the light source connecting tube 1 and the high-pressure water cavity block 2.

[0035] In this embodiment, when the water-guided laser cutting head is used, the high-pressure water chamber block 2 is first threadedly installed on the bottom of the light source connecting tube 1, and then the focusing lens group 3 is placed in the light source connecting tube 1. The two clamping plates 6 elastically clamp the focusing lens group 3 through the elastic component, and the synchronization component allows the two clamping plates 6 to keep synchronous movement during the process of clamping the focusing lens group 3, so that the focusing lens group 3 is stably clamped in the middle of the light source connecting tube 1 and accurately corresponds to the protective lens 4, and then the two clamping plates 6 are fixed by the locking component, and the two clamping plates 6 stably clamp the focusing lens group 3, and finally The light source rod is connected through the thread on the upper inner surface of the light source connecting tube 1, and the high-pressure water cavity block 2 is connected to the high-pressure water source through the water inlet pipe 15. The water from the high-pressure water source enters the high-pressure water cavity block 2 through the water inlet pipe 15 and is sprayed out by the nozzle 5. At the same time, the laser beam generated by the light source rod enters the light source connecting tube 1, passes through the focusing lens group 3 and the protective lens 4 in sequence, and is shot into the high-pressure water cavity block 2. The focusing lens group 3 focuses the laser beam in the nozzle 5. The focused laser is guided by the water column sprayed from the nozzle 5. The laser performs total reflection movement in the water column to extend the energy, thereby achieving the purpose of cutting the object.

[0036] Specifically, the elastic component includes two fixed tubes 701, and the two fixed tubes 701 are fixedly connected to the outer surface of the light source connecting tube 1, and the two fixed tubes 701 are connected to the light source connecting tube 1. Pull rods 702 are movably passed through the two fixed tubes 701, and the ends of the two pull rods 702 that are close to each other are respectively fixedly connected to the two clamping plates 6, and the outer surfaces of the two pull rods 702 are respectively provided with springs 703, and the two springs 703 are respectively located in the two fixed tubes 701 and correspond to the two clamping plates 6.

[0037] In this embodiment, when the focusing lens group 3 is replaced, by pulling any one of the pull rods 702, the two pull rods 702 drive the two clamping plates 6 to move away from each other through the synchronization component. At the same time, the two clamping plates 6 respectively squeeze the springs 703 in the two fixed tubes 701, and then the focusing lens group 3 is placed into the light source connecting tube 1 and the two pull rods 702 are released. The two pull rods 702, under the action of the elastic force of the two springs 703, push the two clamping plates 6 to clamp the focusing lens group 3, so that the focusing lens group 3 can be used stably.

[0038] Specifically, the synchronization component includes two fixed plates 801, both of which are fixedly connected to the light source connecting tube 1, and both of the clamping plates 6 are fixedly connected to a set of racks 802, both of which are rotatably connected to the two fixed plates 801, and the two sets of racks 802 are meshedly connected to the two gears 803.

[0039] In this embodiment, in the process of moving the two clamping plates 6 to replace the focusing lens group 3, the movement of any one of the clamping plates 6 will drive a set of racks 802 to move. The two sets of racks 802 will respectively drive the two clamping plates 6 to move by engaging with the two gears 803 on the two fixed plates 801, thereby realizing the removal and placement of the focusing lens group 3.

[0040] Specifically, the locking assembly includes a threaded rod 901 , which movably passes through a pull rod 702 , and a fixing nut 902 is fixedly connected to a fixing tube 701 , and the threaded rod 901 corresponds to the fixing nut 902 .

[0041] In this embodiment, after the two clamping plates 6 clamp the focusing lens group 3, the threaded rod 901 will correspond to the fixing nut 902. By threading the threaded rod 901 into the fixing nut 902, one pull rod 702 can be restricted, so that one clamping plate 6 cannot move. Since a synchronization mechanism is provided between the two clamping plates 6, when one clamping plate 6 cannot move, the other clamping plate 6 will also be unable to move, so that the focusing lens group 3 remains fixed.

[0042] Specifically, the limit assembly includes two limit rotating rods 101, and the two limit rotating rods 101 are rotatably connected to the high-pressure water chamber block 2. Two fixed blocks 102 are fixedly connected to the light source connecting tube 1. Limiting holes 103 are drilled on the two fixed blocks 102. Limiting rods 104 are movably penetrated through the two limit rotating rods 101, and the two limit rods 104 are matched with the two limit holes 103 respectively.

[0043] In this embodiment, after the high-pressure water cavity block 2 is threadedly connected and assembled with the light source connecting tube 1, the two limit rods 101 are rotated to contact the two fixed blocks 102, so that the two limit rods 104 are respectively inserted into the two limit holes 103, thereby restricting the two stabilizing blocks 11, so that the high-pressure water cavity block 2 cannot be separated from the light source connecting tube 1, thereby effectively preventing the water-guided laser cutting head from loosening and affecting the cutting.

[0044] Specifically, two stabilizing blocks 11 are fixedly connected to the two fixing plates 801 , and two sets of racks 802 are slidably connected to the four stabilizing blocks 11 , respectively.

[0045] In this embodiment, each set of racks 802 is provided with two, each rack 802 is slidably connected to a stabilizing block 11, and the four stabilizing blocks 11 are used to ensure the stability of the two sets of racks 802 when moving.

[0046] Specifically, a pressing pad 12 is disposed in the light source connecting tube 1 , and the pressing pad 12 is located on the upper side of the focusing lens group 3 .

[0047] In this embodiment, after the light source rod is installed on the light source connecting tube 1 , the focusing lens group 3 is pressed and fixed by the pressing pad 12 , so that the focusing lens group 3 is further stabilized between the two clamping plates 6 .

[0048] Specifically, the bottom end of the high-pressure water chamber block 2 is threadedly connected to a positioning tube 13, and the nozzle 5 is located in the positioning tube 13. Two laser positioning lights 14 are fixedly connected to the outer surface of the positioning tube 13, and the two laser positioning lights 14 are electrically connected to an external power supply.

[0049] In this embodiment, the positioning tube 13 is used to connect the high-pressure water chamber block 2 and two laser positioning lamps 14. The two laser positioning lamps 14 generate laser beams through external power supplies to illuminate the object, making it convenient for workers to confirm the cutting position.

[0050] Working principle: When the water-guided laser cutting head is in use, firstly, the high-pressure water chamber block 2 is threadedly installed on the bottom of the light source connecting tube 1, and then by pulling any one of the pull rods 702, the pull rod 702 drives a clamping plate 6 to move, and any movement of the clamping plate 6 will drive a set of racks 802 to move, and the two sets of racks 802 will respectively drive the two clamping plates 6 to move away from each other by meshing with the two gears 803 on the two fixed plates 801, and the two clamping plates 6 will respectively squeeze the springs 703 in the two fixed tubes 701, and then the focusing lens group 3 is placed into the light source connecting tube 1 and the two pull rods 702 are released. The two pull rods 702 push the two clamping plates 6 to clamp the focusing lens group 3 under the action of the elastic force of the two springs 703, so that the focusing lens group 3 is stably clamped in the middle of the light source connecting tube 1 and accurately corresponds to the protective lens 4 for use. After the two clamping plates 6 clamp the focusing lens group 3, the threaded rod 901 will correspond to the fixing nut 902, and by tightening the screw The threaded rod 901 is threadedly connected in the fixing nut 902, which can limit a pull rod 702, so that a clamping plate 6 cannot move. Since a synchronization mechanism is provided between the two clamping plates 6, when one clamping plate 6 cannot move, the other clamping plate 6 cannot move either, so that the focusing lens group 3 remains fixed. The two clamping plates 6 stably clamp and fix the focusing lens group 3. Finally, the light source rod is connected through the thread on the upper inner surface of the light source connecting tube 1, and the high-pressure water cavity block 2 is connected to the high-pressure water source through the water inlet pipe 15. The water from the high-pressure water source enters the high-pressure water cavity block 2 through the water inlet pipe 15 and is sprayed out by the nozzle 5. At the same time, the laser beam generated by the light source rod enters the light source connecting tube 1 and passes through the focusing lens group 3 and the protective lens 4 in turn and is shot into the high-pressure water cavity block 2. The focusing lens group 3 focuses the laser beam in the nozzle 5. The focused laser is guided by the water column sprayed from the nozzle 5. The laser performs total reflection movement in the water column to extend the energy, thereby achieving the purpose of cutting the object.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and improved concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A water-guided laser cutting head, comprising a light source connecting tube (1), characterized in that: The bottom end of the light source connecting pipe (1) is threadedly connected to a high-pressure water cavity block (2), a focusing lens group (3) is placed in the light source connecting pipe (1), a protective lens (4) and a nozzle (5) are fixedly connected to the high-pressure water cavity block (2), and the focusing lens group (3), the protective lens (4) and the nozzle (5) are arranged in sequence from top to bottom, two clamping plates (6) are arranged in the light source connecting pipe (1), and the focusing lens group (3) is located between the two clamping plates (6), a water inlet pipe (15) is fixedly connected to the high-pressure water cavity block (2), and the water inlet pipe (15) is connected to the high-pressure water cavity block (2), and the two clamping plates (6) and the light source connecting pipe (1) are connected. An elastic component, a synchronization component and a locking component are arranged between the light source connecting tube (1) and the high-pressure water cavity block (2); the elastic component is used to control the two clamping plates (6) to elastically clamp and fix the focusing lens group (3) in the light source connecting tube (1); the synchronization component controls the two clamping plates (6) to move simultaneously to prevent the focusing lens group (3) from being offset when being clamped and fixed by the two clamping plates (6); the locking mechanism is used to fix the two clamping plates (6) so that the clamping of the focusing lens group (3) by the two clamping plates (6) remains stable; and a limiting component is arranged between the light source connecting tube (1) and the high-pressure water cavity block (2); the limiting component is used to stabilize the connection between the light source connecting tube (1) and the high-pressure water cavity block (2).

2. A water-guided laser cutting head according to claim 1, characterized in that: The elastic component comprises two fixed tubes (701), the two fixed tubes (701) are fixedly connected to the outer surface of the light source connecting tube (1), and the two fixed tubes (701) are connected to the light source connecting tube (1), a pull rod (702) is movably passed through the two fixed tubes (701), and the ends of the two pull rods (702) that are close to each other are respectively fixedly connected to two clamping plates (6), the outer surfaces of the two pull rods (702) are sleeved with springs (703), and the two springs (703) are respectively located in the two fixed tubes (701) and correspond to the two clamping plates (6).

3. A water-guided laser cutting head according to claim 2, characterized in that: The synchronization component comprises two fixed plates (801), the two fixed plates (801) are fixedly connected to the light source connecting tube (1), the two clamping plates (6) are fixedly connected to a group of racks (802), the two fixed plates (801) are rotatably connected to a gear (803), and the two groups of racks (802) are meshedly connected to the two gears (803).

4. A water-guided laser cutting head according to claim 3, characterized in that: The locking assembly comprises a threaded rod (901), the threaded rod (901) movably passes through a pull rod (702), a fixing nut (902) is fixedly connected to a fixing tube (701), and the threaded rod (901) corresponds to the fixing nut (902).

5. A water-guided laser cutting head according to claim 4, characterized in that: The limiting assembly comprises two limiting rotating rods (101), the two limiting rotating rods (101) are both rotatably connected to the high-pressure water chamber block (2), the light source connecting pipe (1) is fixedly connected to two fixing blocks (102), the two fixing blocks (102) are both provided with limiting holes (103), the two limiting rotating rods (101) are both movably penetrated by limiting rods (104), and the two limiting rods (104) are respectively matched with the two limiting holes (103).

6. A water-guided laser cutting head according to claim 5, characterized in that: Two stabilizing blocks (11) are fixedly connected to the two fixing plates (801), and two sets of racks (802) are slidably connected to the four stabilizing blocks (11) respectively.

7. A water-guided laser cutting head according to claim 6, characterized in that: A pressing pad (12) is arranged in the light source connecting tube (1), and the pressing pad (12) is located on the upper side of the focusing lens group (3).

8. A water-guided laser cutting head according to claim 7, characterized in that: The bottom end of the high-pressure water chamber block (2) is threadedly connected to a positioning tube (13), and the nozzle (5) is located in the positioning tube (13). Two laser positioning lights (14) are fixedly connected to the outer surface of the positioning tube (13), and the two laser positioning lights (14) are electrically connected to an external power supply.

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