A lamp plate laser cutting device

Abstract

The utility model relates to the technical field of lamp plate processing, and disclose a kind of lamp plate laser cutting device, including laser cutting machine, laser cutting machine gantry arm one side is fixedly connected with strip mounting seat, the upper surface of strip mounting seat is fixedly connected with cylinder, cylinder piston rod end portion passes through strip mounting seat fixedly connected with presser plate frame, the presser plate frame is opened with square mouth, detachably equipped with mould core plate in square mouth, the mould core plate is opened with the mould core hole same with the shape of required lamp plate, the presser plate frame is equipped with multiple pin assemblies, which are used for pressing the plate material from below, the utility model is equipped with the presser plate frame, the plate material of cutting position can be pressed tightly before cutting the plate material, and cooperate with the mould core plate of modular design, prevent the plate material overheating in the process of cutting the plate material, so that the plate material is deformed, and then lead to the waste of material.

Description

Technical Field

[0001] This utility model relates to the field of lamp sheet processing technology, and more specifically to a laser cutting device for lamp sheets. Background Technology

[0002] In the field of lighting manufacturing, metal sheets are the basic raw materials for making lamp bodies, brackets, decorative covers and other components. Due to its high precision, high flexibility and non-contact processing characteristics, laser cutting technology has become a key process for cutting and shaping lamp sheets. Traditional laser cutting operations usually involve laying the sheet flat on the worktable and having the laser cutting head scan and cut it according to a preset path.

[0003] When traditional free-form laser cutting is applied to lighting fixture sheets, especially thin sheets or materials sensitive to heat deformation, laser cutting is essentially a thermal processing process. The high-energy-density laser beam melts the workpiece material instantly, while generating a heat-affected zone around the cutting seam. The material in this area expands rapidly due to heat, while the surrounding cold area constrains it, leading to thermal stress concentration.

[0004] After cutting is completed and the heat dissipates, uneven cooling and shrinkage can cause plastic deformation such as warping and twisting of the sheet material. This deformation can cause the cut contour dimensions to exceed tolerances, making it impossible to meet assembly requirements, directly leading to product scrap and waste of raw materials. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a laser cutting device for lamp sheet materials to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: a laser cutting device for lamp panel materials, including a laser cutting machine, a strip mounting base fixedly connected to one side of the gantry arm of the laser cutting machine, a cylinder fixedly connected to the upper surface of the strip mounting base, a pressure plate frame fixedly connected to the piston rod end of the cylinder through the strip mounting base, a square opening on the pressure plate frame, a mold core plate detachably provided in the square opening, a mold core hole with the same shape as the required lamp panel on the mold core plate, and a plurality of ejector pin assemblies for pushing the panel material downwards on the pressure plate frame.

[0007] As a further embodiment of this utility model, the ejector pin assembly includes multiple clearance holes formed on the pressure plate frame, and a cylinder with a bottom opening is fixedly connected to each of the multiple clearance holes. A sliding rod is inserted through and slidably connected to the top of the cylinder, and a top plate is fixedly connected to the bottom end of the sliding rod. A spring is provided between the upper surface of the top plate and the inner wall of the top of the cylinder.

[0008] As a further embodiment of this utility model, an annular groove that matches the shape of the top plate is provided at the bottom opening of the cylinder for supporting the top plate.

[0009] As a further embodiment of this utility model, a stepped groove is provided at the edge of the square opening, and multiple sides of the mold core plate are integrally formed with stepped protrusions that bulge outward and cooperate with the stepped groove.

[0010] As a further embodiment of this utility model, the strip mounting base is provided with multiple circular holes, and a guide rod is fixedly connected to the upper surface of the pressure plate frame. The top end of the guide rod passes through the circular holes and extends upwards, with a limit block fixedly connected to the top end.

[0011] As a further embodiment of this utility model, a linear bearing is fitted onto the circular hole, and the inner ring of the linear bearing is interference-fitted with the outer circumference of the guide rod.

[0012] As a further embodiment of this utility model, the mold core plate adopts a modular design and has various specifications. The shape and size of the mold core holes opened on the mold core plates of different specifications are different, but they all have stepped protrusions that cooperate with the stepped grooves.

[0013] As a further embodiment of this invention, a displacement sensor is provided between the end of the cylinder piston rod and the strip mounting seat to detect the downward stroke of the pressure plate frame.

[0014] The technical effects and advantages of this utility model are as follows: 1. This utility model, through the provided pressure plate frame, can press the sheet material at the cutting part before cutting, and cooperate with the modularly designed mold core plate to prevent the sheet material from overheating during the cutting process, causing the sheet material to deform and thus leading to material waste.

[0015] 2. This utility model, through the precise matching of stepped grooves and stepped protrusions between the mold core plate and the pressure plate frame, allows for easy and quick operation when changing processed products; only the corresponding mold core plate needs to be replaced. This can meet the production needs of various types of lighting fixture panels.

[0016] 3. This utility model, through its unique elastic ejector assembly design, ensures that during the rising process of the pressure plate frame, the ejector assembly is finally detached from the plate under the action of the spring restoring force. This action can produce a slight "push-down" effect, which can effectively overcome the problem of adhesion between the workpiece and the pressure plate frame that may be caused by the cutting heat effect, so that the finished product or waste can be smoothly detached. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This utility model Figure 1 A magnified view of a portion of the image.

[0019] Figure 3This is a structural diagram of the pressure plate frame of this utility model.

[0020] Figure 4 This is a partial sectional view of the cylinder of this utility model.

[0021] Figure 5 This utility model Figure 3 Enlarged view of part A.

[0022] The attached figures are labeled as follows: 1. Laser cutting machine; 2. Strip mounting base; 3. Round hole; 4. Guide rod; 5. Pressure plate frame; 6. Square opening; 7. Mold core plate; 8. Mold core hole; 9. Cylinder; 10. Alternating hole; 11. Cylinder; 12. Sliding rod; 13. Top plate; 14. Annular groove; 15. Spring; 16. Stepped groove; 17. Stepped protrusion. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1-5 This utility model provides a laser cutting device for lamp sheet materials, including a laser cutting machine 1. A strip mounting base 2 is fixedly connected to one side of the gantry arm of the laser cutting machine 1 by bolts. A cylinder 9 is fixedly connected to the upper surface of the strip mounting base 2 by bolts. The piston rod end of the cylinder 9 passes through the strip mounting base 2 and is fixedly connected to a pressure plate frame 5 by bolts. A square opening 6 is provided on the pressure plate frame 5. A mold core plate 7 is detachably provided in the square opening 6. A mold core hole 8 with the same shape as the required lamp sheet is provided on the mold core plate 7. The pressure plate frame 5 is provided with multiple ejector pin assemblies for pushing the sheet material downwards. A displacement sensor (displacement sensor model: PDL-050-A high-precision laser displacement sensor) is provided between the piston rod end of the cylinder 9 and the strip mounting base 2 to detect the downward stroke of the pressure plate frame 5.

[0025] Laser cutting machine 1 is a device that uses a high-energy-density, focused laser beam as a "cutting tool" to locally irradiate the workpiece, causing it to rapidly melt, vaporize, ablate, or reach its ignition point. At the same time, a high-speed airflow coaxial with the beam blows away the molten material, thereby achieving thermal cutting of the material. This is existing technology, and those skilled in the art can set it up according to actual needs, which will not be elaborated here.

[0026] The pressure plate frame 5 can press the sheet material at the cutting part before cutting, and cooperate with the modularly designed mold core plate 7 to prevent the sheet material from overheating during the cutting process, causing the sheet material to deform and thus resulting in material waste.

[0027] It should be noted that: Cylinder 9 is a power actuator that converts the pressure energy of compressed air into mechanical energy. By controlling the gas in and out, it drives the piston to perform linear reciprocating motion. It can be used in conjunction with a magnetic switch, proximity switch or photoelectric switch to achieve precise control of the extension and retraction displacement of the piston rod of cylinder 9. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0028] When in use, the piston rod of cylinder 9 extends downward, pushing the entire pressure plate frame 5 to move downward along the direction of guide rod 4. The mold core plate 7 fixed on the pressure plate frame 5 then descends and first contacts the sheet material. As cylinder 9 continues to press down, the mold core plate 7 presses the sheet material tightly onto the worktable below.

[0029] Furthermore, the ejector pin assembly includes multiple clearance holes 10 opened on the pressure plate frame 5. Each clearance hole 10 is fixedly connected to a cylinder 11 with a bottom opening by bolts. A slide rod 12 is inserted through and slidably connected to the top of the cylinder 11. A top plate 13 is fixedly connected to the bottom of the slide rod 12 by bolts. A spring 15 is provided between the upper surface of the top plate 13 and the inner wall of the top of the cylinder 11.

[0030] Furthermore, an annular groove 14 that matches the shape of the top plate 13 is provided at the bottom opening of the cylinder 11 to support the top plate 13.

[0031] When the top plate 13 contacts the surface of the sheet, the spring 15 begins to be compressed, and the slide rod 12 retracts relative to the cylinder 11. The elastic force provided by the spring 15 continues to act on the sheet through the top plate 13, forming a downward auxiliary clamping force. This design can effectively adapt to the slight unevenness that may exist in the sheet, ensuring that the sheet is evenly clamped, thereby suppressing vibration during laser cutting, preventing warping, and ensuring a smooth and flat cut. The cylinder 9 continues to extend until the top plate 13 is embedded in the annular groove 14, and the pressure plate frame 5 clamps the sheet.

[0032] After the cutting is completed, the laser cutting head moves back to the safe position, the piston rod of the cylinder 9 retracts upward, driving the pressure plate frame 5 and the mold core plate 7 to rise together. At this time, under the restoring force of the spring 15, the ejector pin assembly's top plate 13 finally leaves the surface of the sheet material, and sometimes it can even play a role in assisting to push the workpiece down, preventing the sheet material from being heated and sticking to the pressure plate frame 5 during the cutting process.

[0033] Through the unique elastic ejector pin assembly design, during the upward movement of the pressure plate frame 5, the ejector pin assembly is finally detached from the plate under the restoring force of the spring 15. This action can produce a slight "push-down" effect, which can effectively overcome the problem of adhesion between the workpiece and the pressure plate frame 5 that may be caused by the cutting heat effect, so that the finished product or waste can be detached smoothly.

[0034] In this utility model, a stepped groove 16 is provided at the edge of the square opening 6, and multiple sides of the mold core plate 7 are integrally formed with stepped protrusions 17 that protrude outward and cooperate with the stepped groove 16.

[0035] Furthermore, the core plate 7 adopts a modular design and has various specifications. The core holes 8 opened on the core plates 7 of different specifications have different shapes and sizes, but all have stepped protrusions 17 that match the stepped grooves 16.

[0036] The stepped groove 16 and stepped protrusion 17 that precisely match the mold core plate 7 and the pressure plate frame 5 make it possible to change the processed products by simply replacing the corresponding mold core plate 7. The operation is simple and quick and can meet the production needs of a variety of lighting fixtures.

[0037] First, select a mold core plate 7 of the appropriate specification according to the shape and size of the lamp plate to be processed. Align the stepped protrusion 17 on the side of the mold core plate 7 with the stepped groove 16 on the pressure plate frame 5, embed and fix it in the square opening 6, and fix it with screws to complete the quick change of mold. Then, place the whole flat plate on the worktable of the laser cutting machine 1 and move it to the bottom of the mold core plate 7.

[0038] In this utility model, the strip mounting base 2 has multiple round holes 3, and the upper surface of the pressure plate frame 5 is fixedly connected to a guide rod 4 by bolts. The top end of the guide rod 4 passes through the round hole 3 and extends upward, and the top end is fixedly connected to a limit block by bolts.

[0039] Furthermore, a linear bearing is fitted onto the circular hole 3, with the inner ring of the linear bearing having an interference fit with the outer circumference of the guide rod 4.

[0040] The use of this utility model involves the following steps: S1: First, according to the shape and size of the lamp plate to be processed, select the corresponding specification of the mold core plate 7, align the stepped protrusion 17 on the side of the mold core plate 7 with the stepped groove 16 on the pressure plate frame 5, embed and fix it in the square opening 6, and fix it with screws to complete the quick change of the mold. Then, place the whole flat plate on the worktable of the laser cutting machine 1 and move it initially under the mold core plate 7. S2: Subsequently, the piston rod of cylinder 9 extends downward, pushing the entire pressure plate frame 5 to move downward along the direction of guide rod 4. The mold core plate 7 fixed on the pressure plate frame 5 descends and contacts the sheet metal first. As cylinder 9 continues to press down, the mold core plate 7 presses the sheet metal onto the worktable below. At the same time, multiple ejector pin assemblies set on the pressure plate frame 5 also descend. S3: When the top plate 13 contacts the surface of the sheet, the spring 15 begins to be compressed, the slide rod 12 retracts relative to the cylinder 11, and the elastic force provided by the spring 15 continues to act on the sheet through the top plate 13, forming a downward auxiliary clamping force. This design can effectively adapt to the slight unevenness that may exist in the sheet, ensuring that the sheet is evenly clamped, thereby suppressing vibration during laser cutting, preventing warping, and ensuring a smooth and flat cut. The cylinder 9 continues to extend until the top plate 13 is embedded in the annular groove 14, and the pressure plate frame 5 clamps the sheet. S4: After the cutting is completed, the laser cutting head moves back to the safe position, the piston rod of the cylinder 9 retracts upward, driving the pressure plate frame 5 and the mold core plate 7 to rise together. At this time, under the restoring force of the spring 15, the ejector pin assembly's top plate 13 finally leaves the surface of the sheet material. Sometimes it can even play a role in assisting in lifting the workpiece, preventing the sheet material from being heated and sticking to the pressure plate frame 5 during the cutting process.

[0041] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change. The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs. The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A laser cutting device for lamp sheet metal, comprising a laser cutting machine (1), characterized in that: The laser cutting machine (1) has a strip mounting base (2) fixedly connected to one side of the gantry arm. A cylinder (9) is fixedly connected to the upper surface of the strip mounting base (2). The piston rod end of the cylinder (9) passes through the strip mounting base (2) and is fixedly connected to a pressure plate frame (5). A square opening (6) is provided on the pressure plate frame (5). A mold core plate (7) is detachably provided in the square opening (6). A mold core hole (8) with the same shape as the required lamp plate is provided on the mold core plate (7). Multiple ejector pin assemblies for pushing the plate material downward are provided on the pressure plate frame (5).

2. The laser cutting device for lamp sheet metal according to claim 1, characterized in that: The ejector pin assembly includes multiple clearance holes (10) opened on the pressure plate frame (5). Each clearance hole (10) has a cylinder (11) with an open bottom fixedly connected inside. A slide rod (12) is inserted through and slidably connected to the top of the cylinder (11). A top plate (13) is fixedly connected to the bottom end of the slide rod (12). A spring (15) is provided between the upper surface of the top plate (13) and the inner wall of the top of the cylinder (11).

3. The laser cutting device for lamp sheet metal according to claim 2, characterized in that: The bottom opening of the cylinder (11) is provided with an annular groove (14) that matches the shape of the top plate (13) for supporting the top plate (13).

4. The laser cutting device for lamp sheet metal according to claim 1, characterized in that: The square opening (6) has a stepped groove (16) at its edge, and the core plate (7) has multiple sides integrally formed with stepped protrusions (17) that mate with the stepped groove (16).

5. The laser cutting device for lamp sheet metal according to claim 1, characterized in that: The strip mounting base (2) has multiple round holes (3), and the upper surface of the pressure plate frame (5) is fixedly connected to a guide rod (4). The top end of the guide rod (4) passes through the round hole (3) and extends upward, with a limit block fixedly connected to the top end.

6. The laser cutting device for lamp sheet metal according to claim 5, characterized in that: A linear bearing is fitted onto the circular hole (3), and the inner ring of the linear bearing is interference-fitted with the outer circumference of the guide rod (4).

7. The laser cutting device for lamp sheet metal according to claim 1, characterized in that: The core plate (7) adopts a modular design and has various specifications. The core holes (8) opened on the core plates (7) of different specifications have different shapes and sizes, but all have stepped protrusions (17) that match the stepped grooves (16).

8. The laser cutting device for lamp sheet metal according to claim 1, characterized in that: A displacement sensor is provided between the piston rod end of the cylinder (9) and the strip mounting seat (2) to detect the downward stroke of the pressure plate frame (5).

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