Laser cutting equipment for metal plate

Abstract

The utility model provides laser cutting equipment for a metal plate, which belongs to the technical field of laser cutting equipment, aims to solve the problems that the cutting precision of the existing laser cutting equipment depends on the flatness of a plate, and if the plate is swelled and warped, the processing precision is easy to become poor, and comprises a bottom frame and a workbench needle plate arranged on the bottom frame, the working table needle plate is used for placing a plate needing to be cut; the clamping mechanisms are installed on the periphery of the bottom frame, and the clamping mechanisms can clamp the periphery of the plate; the X displacement mechanism is installed on the side portion of the bottom frame, the Y displacement mechanism is installed on the X displacement mechanism, the laser head is installed on the Y displacement mechanism, the X displacement mechanism drives the Y displacement mechanism to move in the X direction, the Y displacement mechanism drives the laser head to move in the Y direction, and the Y displacement mechanism is further provided with a pressing plate mechanism. The pressing plate mechanism can apply pressing force to the plate around the laser head cutting position.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting equipment, and more specifically, particularly relates to a laser cutting equipment for sheet metal. Background Art

[0002] Laser cutting machine is to focus the laser light emitted from the laser into a high power density laser beam through the optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point, and at the same time, the high-pressure gas coaxial with the beam blows away the molten or vaporized metal. As the relative position of the beam and the workpiece moves, the material is eventually cut, thus achieving the purpose of cutting.

[0003] For example, the laser cutting machine with application number CN201510964813.7 includes a machine tool body, characterized in that: a lifting mechanism is provided in the machine tool body, a workbench assembly is provided above the lifting mechanism, the workbench assembly includes a workbench and a workbench needle plate provided on the workbench, a sheet material clamping mechanism is provided on the side of the workbench in the Y-axis direction, a plurality of sheet material universal translation support mechanisms parallel to the side of the workbench in the X-axis direction are provided on the workbench needle plate, a crossbeam is provided above the side of the workbench in the X-axis direction, an exhaust dust removal mechanism is provided below the crossbeam, and the exhaust dust removal mechanism is enclosed on the outside of the workbench needle plate. Currently, most laser cutting machines adopt the above scheme, placing the cutting sheet material on the needle plate, and then moving the laser cutting head in the X-axis direction and the Y-axis direction of the workbench, so as to cut the sheet material into different shapes.

[0004] Based on the search of the above patents and combined with the equipment in the prior art, it is found that the cutting accuracy of the existing laser cutting equipment depends on the flatness of the sheet material. If the sheet material has bulging and warping, it is easy to cause the processing accuracy to deteriorate.

[0005] Therefore, in view of this, the existing structure and defects are studied and improved, and a sheet metal laser cutting device is provided to achieve a more practical purpose. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a laser cutting device for sheet metal to solve the problem that the cutting accuracy of existing laser cutting equipment depends on the flatness of the sheet material. If the sheet material has bulging and warping, it is easy to cause the processing accuracy to deteriorate.

[0007] The purpose and effect of the sheet metal laser cutting equipment of the utility model are achieved by the following specific technical means:

[0008] A laser cutting device for sheet metal, comprising:

[0009] It includes a bottom frame and a workbench needle plate arranged on the bottom frame, and the workbench needle plate is used to place the plate material to be cut;

[0010] A clamping mechanism, which is installed on all four sides of the bottom frame and can clamp the outer periphery of the sheet material;

[0011] A laser head, an X displacement mechanism and a Y displacement mechanism, wherein the X displacement mechanism is mounted on the side of the bottom frame, the Y displacement mechanism is mounted on the X displacement mechanism, the laser head is mounted on the Y displacement mechanism, the X displacement mechanism drives the Y displacement mechanism to move along the X direction, the Y displacement mechanism drives the laser head to move along the Y direction, and the Y displacement mechanism is also provided with a pressing plate mechanism, which can apply a pressing force to the sheet material around the cutting position of the laser head.

[0012] Furthermore, the pressure plate mechanism includes a first support plate, a sliding rod fixedly connected to a second support plate, a spring whose upper part abuts against a lower surface of the support plate, and a second support plate arranged parallel to the first support plate. The slide rod is provided with multiple slide rods, a spring is sleeved on the outer periphery of the slide rod, the lower part of the spring abuts against the upper surface of the second support plate, a through hole is provided in the middle of the first support plate, the first support plate is provided with multiple through holes, the through holes are arranged corresponding to the slide rod, a platform is provided at the upper end of the slide rod, the platform is located at the upper part of the through hole, the diameter of the platform is larger than the diameter of the through hole, a through hole is provided in the middle of the second support plate, and both the through hole one and the through hole two are located directly below the laser head.

[0013] Furthermore, the pressure plate mechanism also includes an extension piece, one end of the extension piece is connected to the abutment plate, and the other end of the extension piece is installed on the Y displacement mechanism, and the extension piece can move with the Y displacement mechanism.

[0014] Furthermore, the outer peripheral edge of the lower surface of the second abutment plate and the lower edge of the second via hole are both provided with rounded corners.

[0015] Furthermore, the clamping mechanism includes a lower clamping plate connected to the bottom frame, two guide shafts whose lower ends are fixedly connected to the lower clamping plate, an upper clamping plate parallel to the lower clamping plate, a nut fixedly connected to the upper clamping plate, and a screw threadedly connected to the nut, the lower clamping plate is provided with a clamping hole, the lower end of the screw is rotatably connected to the clamping hole, guide holes are provided at both ends of the upper clamping plate, the guide shaft is slidably connected to the guide holes, and a knob is fixedly connected to the upper end of the screw.

[0016] Furthermore, a plurality of brackets are provided at the lower portion of the bottom frame.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model installs a plurality of clamping mechanisms on the periphery of the bottom frame of the laser cutting machine, thereby clamping and fixing the plate material on all sides, and then arranges a pressure plate mechanism at the laser head. When the laser head cuts the plate material, the pressure plate mechanism applies positive pressure to the periphery of the cutting position of the laser head, thereby ensuring that the plate material does not have a large edge warping or bulging, thereby ensuring that the laser head is perpendicular to the surface of the plate material when cutting the plate material, thereby improving the plate material cutting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a three-dimensional structural schematic diagram of a sheet metal laser cutting device.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the bottom frame, the workbench needle plate and the bracket assembly of the utility model.

[0021] Figure 3 The utility model is a three-dimensional structural schematic diagram of a pressing plate mechanism of a sheet metal laser cutting device.

[0022] Figure 4 The utility model is a three-dimensional structural schematic diagram of a clamping mechanism of a sheet metal laser cutting device.

[0023] In the figure, the correspondence between the component names and the figure numbers is: bottom frame 11, workbench needle plate 12, bracket 13, clamping mechanism 14, lower clamping plate 141, clamping hole 1410, guide shaft 142, upper clamping plate 143, guide hole 1430, nut 144, screw 145, knob 1450, laser head 15, X displacement mechanism 16, Y displacement mechanism 17, pressure plate mechanism 18, abutment plate 181, through hole 1810, sliding rod 182, table body 1820, spring 183, abutment plate 2 184, through hole 2 1840, extension piece 185. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example:

[0028] As attached Figure 1 To Attachment Figure 4 As shown:

[0029] The utility model provides a sheet metal laser cutting device, comprising:

[0030] It includes a bottom frame 11 and a workbench needle plate 12 arranged on the bottom frame 11, and the workbench needle plate 12 is used to place the plate material to be cut;

[0031] Clamping mechanism 14: Clamping mechanisms 14 are installed around the bottom frame 11, and the clamping mechanisms 14 can clamp the outer periphery of the sheet;

[0032] The laser head 15, the X displacement mechanism 16 and the Y displacement mechanism 17, the X displacement mechanism 16 is installed on the side of the bottom frame 11, the Y displacement mechanism 17 is installed on the X displacement mechanism 16, the laser head 15 is installed on the Y displacement mechanism 17, the X displacement mechanism 16 drives the Y displacement mechanism 17 to move along the X direction, the Y displacement mechanism 17 drives the laser head 15 to move along the Y direction, and the Y displacement mechanism 17 is also provided with a pressing plate mechanism 18, which can apply a pressing force to the sheet material around the cutting position of the laser head 15.

[0033] In this embodiment, a plurality of clamping mechanisms 14 are installed on the periphery of the bottom frame of the laser cutting machine to achieve clamping and fixing of the sheet material on all sides, and a pressure plate mechanism 18 is provided at the laser head 15. When the laser head 15 cuts the sheet material, the pressure plate mechanism 18 applies positive pressure to the periphery of the cutting position of the laser head 15, thereby ensuring that the sheet material does not have a large warping or bulging, thereby ensuring that the laser head 15 is perpendicular to the surface of the sheet material when cutting the sheet material, thereby improving the sheet material cutting quality.

[0034] The X displacement mechanism 16 and the Y displacement mechanism 17 are structured as follows: the sliding direction is guided by the setting of the slider and the slide rail, the screw nut and the screw are threadedly connected, the screw nut is fixed on the component to be moved, and the screw rotation connection is ensured, and the motor is used to provide power for the screw rotation, thereby realizing "the X displacement mechanism 16 drives the Y displacement mechanism 17 to move along the X direction, and the Y displacement mechanism 17 drives the laser head 15 to move along the Y direction". Then, the laser head 15 is driven to move along the X-axis and the Y-axis on the processing plane of the sheet. The X-axis and the Y-axis are perpendicular to each other. For details, please refer to the patent with the publication number CN218673607U, which shows the transverse movement mechanism and the longitudinal movement mechanism.

[0035] More specifically, Figure 3 As shown, the pressure plate mechanism 18 includes a butt plate 181, a slide bar 182 fixedly connected to a butt plate 184, a spring 183 whose upper part abuts against the lower surface of the butt plate 181, and a butt plate 184 arranged parallel to the butt plate 181. A plurality of slide bars 182 are provided, and a spring 183 is sleeved on the outer periphery of the slide bar 182. The lower part of the spring 183 abuts against the upper surface of the butt plate 184. A through hole 1810 is provided in the middle of the butt plate 181. The butt plate 181 is provided with a plurality of through holes, and the through holes are arranged corresponding to the slide bar 182. A platform 1820 is provided at the upper end of the slide bar 182, and the platform 1820 is located at the upper part of the through hole. The diameter of the platform 1820 is larger than the diameter of the through hole. A through hole 1840 is provided in the middle of the butt plate 184. Both the through hole 1810 and the through hole 1840 are located directly below the laser head 15.

[0036] The spring 183 exerts a downward elastic force on the second plate 184, so as to ensure that the lower surface of the second plate 184 fits the upper surface of the plate when the laser head 15 cuts the plate. The specific elastic coefficient of the spring 183 depends on the thickness of the plate. In order to ensure smooth movement between the second plate 184 and the plate, lubricating oil needs to be applied to the lower surface of the second plate 184.

[0037] The pressure plate mechanism 18 also includes an extension piece 185 , one end of the extension piece 185 is connected to the abutment plate 181 , and the other end of the extension piece 185 is installed on the Y displacement mechanism 17 , and the extension piece 185 can move with the Y displacement mechanism 17 .

[0038] The extension piece 185 is used to ensure that the second abutment plate 184 can abut against the upper surface of the sheet material.

[0039] The outer peripheral edge of the lower surface of the second abutment plate 184 and the lower edge of the second via hole 1840 are both provided with rounded corners.

[0040] The rounded corners ensure that the second stop plate 184 can avoid shifting the strip structure formed by cutting the sheet material as much as possible when moving on the sheet material, thereby making the second stop plate 184 move more smoothly on the sheet material.

[0041] More specifically, Figure 4 As shown, the clamping mechanism 14 includes a lower clamping plate 141 connected to the bottom frame 11, two guide shafts 142 fixedly connected to the lower clamping plate 141 at the lower end, an upper clamping plate 143 parallel to the lower clamping plate 141, a nut 144 fixedly connected to the upper clamping plate 143, and a screw 145 threadedly connected to the nut 144. The lower clamping plate 141 is provided with a clamping hole 1410, and the lower end of the screw 145 is rotatably connected to the clamping hole 1410. Guide holes 1430 are provided at both ends of the upper clamping plate 143, the guide shaft 142 is slidably connected to the guide hole 1430, and the upper end of the screw 145 is fixedly connected to a knob 1450.

[0042] The knob 1450 rotates to drive the nut 144 to move up and down, so that the nut 144 drives the upper clamping plate 143 to move up and down along the axial direction of the guide shaft 142.

[0043] A plurality of brackets 13 are disposed at the lower portion of the bottom frame 11 .

[0044] The support 13 is used to ensure that the height of the sheet material after placement is within a suitable range. The support 13 can be set as a support frame with adjustable height.

[0045] The specific usage and function of this embodiment are as follows:

[0046] When the utility model is in use, a sheet is placed on a workbench needle plate 12 and is clamped at the periphery of the sheet by a plurality of clamping mechanisms 14. When the laser head 15 moves in the X-axis and Y-directions along with the X-displacement mechanism 16 and the Y-displacement mechanism 17 and cuts the sheet, the second abutment plate 184 of the pressing plate mechanism 18 applies positive pressure to the sheet under the action of elastic force, so that the periphery of the sheet at the cutting position is in close contact with the workbench needle plate 12, thereby ensuring the horizontality of the sheet and ensuring higher dimensional accuracy of the cutting.

[0047] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A laser cutting device for sheet metal, characterized in that: include: It comprises a bottom frame (11) and a workbench needle plate (12) arranged on the bottom frame (11), wherein the workbench needle plate (12) is used for placing a sheet material to be cut; A clamping mechanism (14), wherein the clamping mechanism (14) is installed on all four sides of the bottom frame (11), and the clamping mechanism (14) is capable of clamping the outer periphery of the sheet material; A laser head (15), an X displacement mechanism (16) and a Y displacement mechanism (17), wherein the X displacement mechanism (16) is mounted on the side of the bottom frame (11), the Y displacement mechanism (17) is mounted on the X displacement mechanism (16), the laser head (15) is mounted on the Y displacement mechanism (17), the X displacement mechanism (16) drives the Y displacement mechanism (17) to move along the X direction, the Y displacement mechanism (17) drives the laser head (15) to move along the Y direction, and the Y displacement mechanism (17) is also provided with a pressing plate mechanism (18), and the pressing plate mechanism (18) can apply a pressing force to the sheet material around the cutting position of the laser head (15).

2. The laser cutting device for sheet metal according to claim 1, characterized in that: The pressure plate mechanism (18) comprises a first abutment plate (181), a slide rod (182) fixedly connected to a second abutment plate (184), a spring (183) whose upper portion abuts against the lower surface of the first abutment plate (181), and a second abutment plate (184) arranged parallel to the first abutment plate (181), wherein a plurality of slide rods (182) are provided, a spring (183) is sleeved on the outer periphery of the slide rod (182), the lower portion of the spring (183) abuts against the upper surface of the second abutment plate (184), and a spring (183) is arranged in the middle portion of the first abutment plate (181). A through hole (1810) is provided, and the support plate (181) is provided with multiple through holes, and the through holes are arranged corresponding to the sliding rod (182). A platform (1820) is provided at the upper end of the sliding rod (182), and the platform (1820) is located at the upper part of the through hole. The diameter of the platform (1820) is larger than the diameter of the through hole. A through hole (1840) is provided in the middle of the support plate (184), and the through hole (1810) and the through hole (1840) are both located directly below the laser head (15).

3. The laser cutting device for sheet metal according to claim 2, characterized in that: The pressure plate mechanism (18) further comprises an extension member (185), one end of which is connected to the abutment plate (181), and the other end of which is mounted on the Y displacement mechanism (17). The extension member (185) can move with the Y displacement mechanism (17).

4. The laser cutting device for sheet metal according to claim 2, characterized in that: The outer peripheral edge of the lower surface of the second abutment plate (184) and the lower edge of the second through hole (1840) are both provided with rounded corners.

5. The laser cutting device for sheet metal according to claim 1, characterized in that: The clamping mechanism (14) comprises a lower clamping plate (141) connected to the bottom frame (11), two guide shafts (142) whose lower ends are fixedly connected to the lower clamping plate (141), an upper clamping plate (143) parallel to the lower clamping plate (141), a nut (144) fixedly connected to the upper clamping plate (143), and a screw rod (145) threadedly connected to the nut (144); the lower clamping plate (141) is provided with a clamping hole (1410); the lower end of the screw rod (145) is rotatably connected to the clamping hole (1410); guide holes (1430) are provided at both ends of the upper clamping plate (143); the guide shafts (142) are slidably connected to the guide holes (1430); and the upper end of the screw rod (145) is fixedly connected to a knob (1450).

6. A sheet metal laser cutting device as claimed in any one of claims 1 to 5, characterized in that: A plurality of brackets (13) are arranged at the lower part of the bottom frame (11).

Images