A water jet laser cutting machine cutting head device

Abstract

This utility model relates to the field of laser cutting machine technology, specifically to a cutting head device for a water-guided laser cutting machine. It includes a machine frame, a cutting head assembly, and an installation assembly. The installation assembly includes a positioning plate, a slide block, a fixing plate, a connecting arm, a guide block, a limiting frame, a limiting platform, a connector, and a descending component. During installation, the guide block, pre-installed on the rear side of the cutting head assembly, is directly engaged with the connecting arm and vertically slid in. The dovetail blocks on both sides of the guide block and the symmetrically arranged positioning rods at the bottom provide positioning, avoiding the need for numerous positioning pins that could affect disassembly or installation speed. After pushing in, the upper limiting frame is directly slid-in and installed. Finally, a connector is installed to limit the limiting frame, thus quickly fixing the cutting head assembly. Conversely, after removing the connector and the insertion frame, the cutting head assembly can be directly slid upwards and removed. This solves the problem of inconvenient quick installation and disassembly of the cutting head device in existing laser cutting machines.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting machine technology, and in particular to a cutting head device for a water-guided laser cutting machine. Background Technology

[0002] Existing laser microjets utilize traditional dual-head five-axis machining platforms. The laser microjets' head module is mounted on the machining head unit, where the workpiece stage is fixed. The machining head unit can perform five-axis motion: rapid relative motion with respect to the X, Y, and Z axes of the workpiece coordinate system, rotation of the C-axis (parallel to the Z-axis) swing arm, oscillation of the B-axis (parallel to the Y-axis) swing head, and normal motion (A-axis, parallel to the Z-axis) follow-up motion. For laser microjets, the head unit's position needs constant movement during processing. This movement, especially oscillation or rotation, alters the position and shape of the water jet (besides the single A-axis follow-up motion, the micro-water jet path becomes curved). This can result in the micro-water jet beam appearing as a discontinuous series of droplets, leading to instability of the laser beam coupled within it, ultimately affecting the workpiece's processing quality.

[0003] A search revealed that prior art CN220575046U discloses a head assembly for a water-guided laser cutting machine. The head assembly is mounted on the machine frame of the water-guided laser cutting machine and located above the workpiece platform on the machine bed. The head assembly includes a head and an A-axis translation mechanism. The head is equipped with a laser micro-jets module, and the A-axis translation mechanism drives the head to move vertically along the A-axis on the machine frame. This utility model allows for rapid vertical movement of the head assembly while ensuring workpiece cutting quality.

[0004] However, the above-mentioned head assembly has the following problems in actual use: the head connecting plate is fixedly connected to the A-axis drive rod connecting block on the A-axis drive rod, the head base plate is fixedly connected to the head connecting plate, and the head module is fixedly assembled on the head base plate. According to the structure disclosed in the attached drawings, the connecting parts of the above components require a large number of bolts to achieve fixed connection, which makes the subsequent disassembly of the head assembly very cumbersome and the installation inconvenient and slow. Utility Model Content

[0005] The purpose of this utility model is to provide a cutting head device for a water-guided laser cutting machine, which solves the problem that the cutting head device of the existing laser cutting machine is not convenient for quick installation and disassembly.

[0006] To achieve the above objectives, this utility model provides a cutting head device for a water-guided laser cutting machine, including a machine frame, a machine head assembly disposed on the front side of the machine frame, and a mounting assembly;

[0007] The installation assembly includes a positioning plate, a slide block, a fixing plate, a connecting arm, a guide block, a limiting frame, a limiting platform, a connector, and a descending component. The positioning plate is fixed to the front side of the machine frame. The slide block is located on the front side of the positioning plate and is driven by the descending component to achieve vertical lifting and lowering movement. The fixing plate is fixed to the front side of the slide block and has the connecting arm integrally provided. The vertical direction of the connecting arm does not penetrate the inner side of the mounting groove and has symmetrical dovetail grooves communicating with the mounting groove. The dovetail grooves facilitate the sliding installation and engagement of the dovetail blocks on the guide block. The guide block is connected to the T-shaped connecting part of the machine head assembly by bolts. The limiting frame passes through the connecting arm and the guide block respectively and is slidably connected to the limiting platform. The connector is used to lock the end of the limiting frame to the limiting platform.

[0008] The downward component includes a linear guide slider assembly and an auxiliary unit. The linear guide slider assembly is symmetrically installed on the front side of the positioning plate, and its linear slider is connected to the slide block by bolts. The auxiliary unit is located on the side of the positioning plate near the slide block.

[0009] The auxiliary unit includes a servo motor and a transmission screw. The servo motor is mounted on the top of the positioning plate. The transmission screw is rotatably connected to the positioning plate. The T-shaped nut of the transmission screw is installed in the through hole of the mounting plate on the rear side of the slide block, and its shaft end near the servo motor is connected to the output shaft of the servo motor through a coupling.

[0010] The guide block is equipped with a T-shaped screw on its top, and a lifting ring is welded to the top of the T-shaped screw.

[0011] The water-guided laser cutting head device further includes a reinforcing component, which includes a reinforcing plate and ear plates. The ear plates are integrally provided on both sides of the reinforcing plate, and the ear plates are detachably connected to the connecting arm and the positioning plate, respectively.

[0012] This utility model discloses a cutting head device for a water-guided laser cutting machine. During installation, the guide block pre-installed on the rear side of the cutting head assembly is directly engaged with the connecting arm and vertically slid in. The dovetail blocks on both sides of the guide block and the symmetrically arranged integrated positioning rods at the bottom directly achieve positioning, avoiding the need for numerous positioning pins that would affect the speed of disassembly or installation. After the guide block is pushed in, the upper limit frame is directly slidably inserted and installed. Finally, a connector is installed to limit the position of the limit frame, thus completing the quick fixation of the cutting head assembly. Subsequently, a connector is removed, the limit frame is pulled out, and the cutting head assembly is finally lifted upwards to complete disassembly. This is convenient and quick, thus solving the problem that the cutting head devices of existing laser cutting machines are not convenient for quick installation and disassembly. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of the water-guided laser cutting head device according to the first embodiment of this utility model.

[0015] Figure 2 This is a schematic diagram of the connecting arm according to the first embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the limiting frame according to the first embodiment of this utility model.

[0017] Figure 4 This is a schematic diagram of the overall structure of the water-guided laser cutting head device according to the second embodiment of this utility model.

[0018] In the diagram: 101-Machine frame, 102-Machine head assembly, 103-Positioning plate, 104-Slide block, 105-Fixing plate, 106-Connecting arm, 107-Guide block, 108-Limiting frame, 109-Limiting platform, 110-Connecting piece, 111-Linear guide rail slider component, 112-Servo motor, 113-Transmission screw, 114-T-screw, 115-Lifting ring, 201-Reinforcing plate, 202-Ear plate. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0020] Example 1:

[0021] like Figures 1 to 3 As shown, where Figure 1 This is a schematic diagram of the overall structure of the cutting head device of a water-guided laser cutting machine. Figure 2 This is a schematic diagram of the connecting arm. Figure 3This is a structural diagram of a limiting frame. This utility model provides a cutting head device for a water-guided laser cutting machine: it includes a machine frame 101, a cutting head assembly 102, and an installation assembly. The installation assembly includes a positioning plate 103, a slide 104, a fixing plate 105, a connecting arm 106, a guide block 107, a limiting frame 108, a limiting platform 109, a connecting piece 110, and a descending component. The descending component includes a linear guide rail slider component 111 and an auxiliary unit. The auxiliary unit includes a servo motor 112 and a transmission lead screw 113. This solution solves the problem of inconvenient quick installation and disassembly of the cutting head device in existing laser cutting machines. It is understood that the aforementioned solution enables rapid installation and disassembly of the cutting head assembly 102.

[0022] In this embodiment, a machine head assembly 102 is provided on the front side of the machine gantry 101. The equipment installed on the machine gantry 101 in this application directly adopts the equipment structure disclosed in the prior art CN220575046U. This application aims to optimize the installation structure of the machine head assembly 102 to facilitate quick installation and disassembly. Similarly, the machine head assembly 102 is configured with a laser microjets (specifically, the LMJIP module from SYNOVA, not shown in the figure) just like the prior art. During processing, the water jet impacts the processing surface; then the laser pulse is emitted and passes through the water jet, and the material begins to absorb heat; the absorbed laser energy generates a plasma layer that separates water and material; after the laser pulse ends, the plasma phenomenon ends, and the water jet cools the material; the water jet completely removes the heat through convection; thereby achieving high-precision cutting of the workpiece. In addition, the circuits, electronic components, and modules involved in this utility model are all prior art, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve improvements to the software and methods.

[0023] The positioning plate 103 is fixed to the front side of the machine gantry 101. The slide block 104 is located on the front side of the positioning plate 103 and is driven by the descending component to achieve vertical lifting and lowering movement. The fixing plate 105 is fixed to the front side of the slide block 104 and is integrally provided with the connecting arm 106. The vertical dovetail grooves communicating with the mounting groove are symmetrically arranged on the inner side of the vertical non-penetrating mounting groove of the connecting arm 106. The dovetail grooves facilitate the sliding installation and engagement of the dovetail block on the guide block 107. The guide block 107 is connected to the T-shaped connecting part of the machine head assembly 102 by bolts. The limiting frame 108 passes through the connecting arm 106 and the guide block 107 respectively and is slidably connected to the limiting platform 109. The connecting piece 110 is used to lock the end of the limiting frame 108 onto the limiting platform 109. The positioning plate 103 is fixed by positioning pins and bolts. The slide block 104 is connected to the linear slider of the linear guide slider component 111 by bolts and positioning pins. The fixing plate 105 is fixed by positioning pins and bolts. The connecting arm 106 is provided with a non-penetrating mounting groove. The bottom of the mounting groove is provided with symmetrical through holes that cooperate with the positioning cylinder at the bottom of the guide block 107. At the same time, the inner side of the mounting groove is provided with symmetrical dovetail grooves for the installation of dovetail blocks on the guide block 107. The dovetail blocks and positioning cylinders directly replace the traditional positioning pin structure to ensure the positioning stability of the guide block 107. The guide block 107 has bolt holes and non-penetrating circular holes on its front side. The bolt holes facilitate bolt connection to the T-shaped mounting part on the rear side of the head assembly 102. Vertically symmetrically spaced cylinders are arranged on the T-shaped mounting part, and these cylinders slide in conjunction with the non-penetrating circular holes on the front side of the guide block 107. This structure improves the stability of the connection between the head assembly 102 and the guide block 107. The guide block 107 is pre-installed on the head assembly 102 to form an integral structure. The limiting frame 108 is U-shaped, consisting of a flat plate and two square rods. The connecting arm 106 and the guide block 107 each have through-cavities for the square rods to pass through. The connecting arm 106 has an integrally formed limiting platform 109 on the end of the through-cavity away from the flat plate. The limiting platform 109 allows the ends of the square rods on the limiting frame 108 to pass through. Alignment through-holes are provided through the limiting platform 109 and the square rods. The connector 110 uses a T-shaped screw and nut. The optical shaft end of the T-shaped screw passes through the through holes on the square rod of the limiting platform 109 and the limiting frame 108, respectively. Finally, it is tightened by the nut, thereby fixing the limiting frame 108, ensuring stability, and preventing the limiting frame 108 from moving. The dimensions of the T-shaped screw and the square rod must ensure that the head assembly 102 can work stably after installation. The specific dimensions are set according to the weight of the head assembly 102.

[0024] Secondly, the linear guide slider component 111 is symmetrically installed on the front side of the positioning plate 103, and its linear slider is connected to the slide block 104 by bolts; the auxiliary unit is located on the side of the positioning plate 103 near the slide block 104. The linear guide slider component 111 directly adopts the guide slider structure of the Z-axis of the existing vertical machining center, and the corresponding dimensions can be selected according to existing technology and equipment requirements. The linear guide of the linear guide slider component 111 is fixed by countersunk bolts, and rectangular blocks are set on both sides to ensure the straightness of the linear guide. The rectangular blocks are fixed by countersunk bolts and positioning pins and do not interfere with the sliding of the linear slider. A linear slider is set on the linear guide, and the linear slider is connected to the slide block 104 by positioning pins and bolts. The auxiliary unit is used to drive the slide block 104 to reciprocate.

[0025] Then, the servo motor 112 is mounted on the top of the positioning plate 103; the transmission screw 113 is rotatably connected to the positioning plate 103, and the T-shaped mating nut of the transmission screw 113 is installed in the through hole of the mounting plate portion on the rear side of the slide 104, and its shaft end near the servo motor 112 is connected to the output shaft of the servo motor 112 through a coupling. The servo motor 112 is equipped with a brake mechanism and an encoder for easy stopping, shaft locking, and position control, and is fixed by bolts. The mounting ends on both sides of the transmission screw 113 are respectively mounted on the detachable bearing seats of the positioning plate 103 through rotating bearings. The fixing disc of the T-shaped mating nut of the transmission screw 113 is fixed in the through hole of the mounting portion on the rear side of the slide 104 by bolts. The top connecting end of the transmission screw 113 is connected to the output shaft of the servo motor 112 through a coupling.

[0026] Finally, a T-shaped screw 114 is installed on the top of the guide block 107, and a lifting ring 115 is welded to the top of the T-shaped screw 114. The top of the guide block 107 is provided with a threaded hole to facilitate the installation of the T-shaped screw 114. The welding of the lifting ring 115 facilitates the installation of the T-shaped screw 114 and also allows for the installation of an auxiliary rope, making it easier to remove the head assembly 102 upwards.

[0027] When using this utility model to solve the problem of inconvenient quick installation and disassembly of the head assembly of a laser cutting machine in the prior art, the guide block 107, which is pre-installed on the rear side of the head assembly 102, is directly engaged with the connecting arm 106 and vertically slid in during installation. The dovetail blocks on both sides of the guide block 107 and the symmetrically arranged integrated positioning rods at the bottom directly achieve the positioning function, avoiding the need for many positioning pins that affect the speed of disassembly or installation. After the guide block 107 is pushed in, the limiting frame 108 is directly slidably inserted and installed. Finally, a connector 110 is installed to limit the limiting frame 108, thus completing the quick fixation of the head assembly 102. Subsequently, one connector 110 is removed, the limiting frame 108 is pulled out, and finally the head assembly 102 is slid upward to complete the disassembly. This is convenient and quick, thus solving the problem of inconvenient quick installation and disassembly of the head assembly of a laser cutting machine in the prior art.

[0028] Example 2:

[0029] like Figure 4 As shown, where Figure 4 This is a schematic diagram of the overall structure of the cutting head device of a water-guided laser cutting machine. Based on the first embodiment, this utility model provides a cutting head device for a water-guided laser cutting machine. The cutting head device for a water-guided laser cutting machine also includes a reinforcing component, which includes a reinforcing plate 201 and an ear plate 202.

[0030] The reinforcing plate 201 has ear plates 202 integrally formed on both sides, and the ear plates 202 are detachably connected to the connecting arm 106 and the positioning plate 103, respectively. The ear plates 202 are fixed by bolts.

[0031] In this embodiment, the stability of the connecting arm 106 can be effectively improved by setting the reinforcing plate 201 and the ear plate 202.

[0032] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A cutting head device for a water-guided laser cutting machine, comprising a machine frame, wherein a cutting head assembly is disposed on the front side of the machine frame, characterized in that, It also includes installation components; The installation assembly includes a positioning plate, a slide block, a fixing plate, a connecting arm, a guide block, a limiting frame, a limiting platform, a connector, and a descending component. The positioning plate is fixed to the front side of the machine frame. The slide block is located on the front side of the positioning plate and is driven by the descending component to achieve vertical lifting and lowering movement. The fixing plate is fixed to the front side of the slide block and has the connecting arm integrally provided. The vertical direction of the connecting arm does not penetrate the inner side of the mounting groove and has symmetrical dovetail grooves communicating with the mounting groove. The dovetail grooves facilitate the sliding installation and engagement of the dovetail blocks on the guide block. The guide block is connected to the T-shaped connecting part of the machine head assembly by bolts. The limiting frame passes through the connecting arm and the guide block respectively and is slidably connected to the limiting platform. The connector is used to lock the end of the limiting frame to the limiting platform.

2. The water-guided laser cutting head device as described in claim 1, characterized in that, The downward component includes a linear guide slider assembly and an auxiliary unit. The linear guide slider assembly is symmetrically installed on the front side of the positioning plate, and its linear slider is connected to the slide block by bolts. The auxiliary unit is located on the side of the positioning plate near the slide block.

3. The water-guided laser cutting head device as described in claim 2, characterized in that, The auxiliary unit includes a servo motor and a transmission screw. The servo motor is mounted on the top of the positioning plate. The transmission screw is rotatably connected to the positioning plate. The T-shaped nut of the transmission screw is installed in the through hole of the mounting plate on the rear side of the slide block, and its shaft end near the servo motor is connected to the output shaft of the servo motor through a coupling.

4. The water-guided laser cutting head device as described in claim 1, characterized in that, A T-shaped screw is installed on the top of the guide block, and a lifting ring is welded to the top of the T-shaped screw.

5. The water-guided laser cutting head device as described in claim 1, characterized in that, The water-guided laser cutting head device also includes a reinforcing component, which includes a reinforcing plate and ear plates. The ear plates are integrally provided on both sides of the reinforcing plate, and the ear plates are detachably connected to the connecting arm and the positioning plate, respectively.

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