A plate edge milling device

Abstract

The present application relates to the technical field of milling processing, in particular to a plate edge milling device, which comprises a conveying line and a clamp, the conveying line is provided with a milling cutter mechanism and a laser modification mechanism on one side along the width direction, and the conveying line comprises two conveying parts separated along the width direction. The clamp comprises two clamping plates opposite to each other, the clamp can be opened and closed to clamp the side edge of the plate, and the clamping plates can be clamped on the upper and lower surfaces of the plate respectively. At least one of the clamping plates is provided with an air cavity, and a plurality of air nozzles communicating with the air cavity are arranged on the outer part of the clamping plate along the conveying direction, and any air nozzle can adjustably suck air or spray cold air. A compression roller assembly is arranged above the conveying line. The conveying line comprises a chassis, the conveying part close to the milling cutter mechanism along the width direction is fixed with the chassis, and the other conveying part can be lifted relative to the chassis.

Description

Technical Field

[0001] This invention relates to the field of milling technology, and in particular to a plate milling device. Background Technology

[0002] In some application scenarios, the side surfaces of metal sheets need to be processed. Processing methods include, but are not limited to: milling the side surfaces to thin them to adjust the size of the sheet, milling the side surfaces to adjust the perpendicularity of the side surfaces to the upper and lower surfaces, modifying the flatness of the side surfaces, and milling the side surfaces with upper and lower bevels to facilitate welding.

[0003] The inventors sought to provide a milling device having a conveyor line that transports materials along a set direction. A milling component and a laser finishing component are arranged on one side of the conveyor line along the width direction (i.e., perpendicular to the conveying direction). The milling component uses a milling cutter to mill the side surface of the sheet metal to facilitate thinning or beveling. The laser finishing component performs finishing on the milled side surface by laser ablation.

[0004] However, the milling process generates a large amount of debris on the side surface of the sheet metal. Some of this debris flies around, causing environmental pollution; the rest remains on the side surface of the milled sheet, affecting the local quality of the side surface after subsequent laser ablation. The inventors attempted to add a suction nozzle near the milling assembly to absorb the generated debris. However, milling cutters typically require translation in all directions and rotation to adjust the tilt angle. In these situations, the suction nozzle can easily interfere with the milling cutter mechanism, hindering the normal operation of both milling and debris absorption. Summary of the Invention

[0005] The present invention provides a plate milling device that can solve at least one of the above-mentioned technical problems.

[0006] To address the aforementioned technical problems, one or more embodiments of the present invention provide a sheet metal milling device, including a conveyor line and a clamp. A milling cutter mechanism and a laser finishing mechanism are provided on one side of the conveyor line along its width direction. The conveyor line includes two conveying sections separated along its width direction. The clamp includes two opposing clamping plates, which can open and close to clamp the side edge of the sheet metal. The clamping plates can clamp the upper and lower surfaces of the sheet metal respectively. At least one clamping plate has an air chamber, and multiple air nozzles communicating with the air chamber are provided on the outside of the clamping plate along the conveying direction. Any air nozzle can adjustably draw in or spray cold air. A pressure roller assembly is provided above the conveyor line. The conveyor line includes a base frame. The conveying section near the milling cutter mechanism along its width direction is fixed to the base frame, and the other conveying section can be raised and lowered relative to the base frame.

[0007] The beneficial effects of one or more of the above technical solutions are as follows: In this solution, the milling device includes a conveyor line. A milling cutter mechanism and a laser finishing mechanism are set on one side of the conveyor line. The conveyor line can transport the sheet material to be processed. The milling cutter mechanism can mill the side edge of the sheet material to facilitate the adjustment of the sheet material size and the formation of the bevel. The laser finishing mechanism can finish the side surface of the sheet material after milling, remove excess burrs, and improve the flatness of the sheet material surface.

[0008] Additionally, a clamping device, separate from the conveyor line and capable of holding the sheet metal on its side, is provided. The clamping plates of this device have multiple air nozzles connected to air chambers along the conveying direction, each capable of adjusting to either extract or spray cold air. Firstly, this arrangement allows the air nozzles to move synchronously with the sheet metal. The clamping device is installed inside the conveyor line, preventing interference with the position adjustment of the milling cutter mechanism. Secondly, the air nozzles can extract air during milling to absorb excess debris, and can also spray cold air after milling and laser finishing at a specific location on the sheet metal. This facilitates rapid cooling and shaping of the sheet metal surface, preventing the material on the side surface from remaining molten for an extended period after laser finishing, thus reducing the probability of deformation due to gravity.

[0009] Meanwhile, the conveyor line includes two separate conveying sections. The conveying section closer to the milling cutter mechanism along the width direction is fixed to the base frame, while the other conveying section can be raised and lowered relative to the base frame. In this configuration, the conveying section farther from the milling cutter mechanism can be raised and lowered, thereby compensating for the increased dimensional difference in plates of different thicknesses after being clamped by the fixture, ensuring that the plates remain horizontal after being clamped by the fixture. Attached Figure Description

[0010] Figure 1 This is an isometric view of the overall structure in an embodiment of the present invention without the use of a fixture; Figure 2 This is an axonometric schematic diagram of the overall structure from another viewpoint in an embodiment of the present invention; Figure 3 This is a front view schematic diagram of the overall structure in use in an embodiment of the present invention; Figure 4 This is a top view of the conveyor line and clamps and other structural components in an embodiment of the present invention; Figure 5 for Figure 4 Enlarged structural diagram of section A; Figure 6 This is a top view schematic diagram of the cooperation between the plate and the clamp in an embodiment of the present invention; Figure 7 This is a partial schematic diagram of the fit between the sheet metal and the fixture in an embodiment of the present invention; Figure 8 This is a cross-sectional schematic diagram of the air chamber and air nozzle in an embodiment of the present invention; Figure 9 This is an isometric view of the laser finishing mechanism in an embodiment of the present invention.

[0011] In the diagram, 1. Electric push rod; 3. Sheet metal; 4. Support frame; 5. First conveyor section; 6. Second conveyor section; 7. Pressure roller assembly; 8. Laser finishing mechanism; 9. First milling cutter assembly; 10. Second milling cutter assembly; 11. Cantilever; 12. Lifting cylinder; 13. Crossbeam; 14. Base frame; 15. Worktable; 16. Fixture; 17. Air nozzle; 71. Horizontal frame; 72. Pressure roller; 73. Vertical guide rail; 91. Vertical frame; 92. Handwheel; 93. Support plate; 94. Laser emitter; 95. Rotating plate; 96. Arc rack; 97. Gear; 98. Laser head; 99. Guide assembly; 161. Upper clamping plate; 162. Air chamber; 163. Spring; 164. Lower clamping plate; 165. Hinge support; 1621. Flat plate; 1622. Second air chamber; 1623. Miniature valve; 1624. First air chamber; 171. Second section; 172. First section; 173. Separator plate; 174. Pipeline. Detailed Implementation

[0012] To clearly illustrate the technical features of this solution, the invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0013] See Figures 1-9 This embodiment provides a milling device for sheet metal 3, including a conveyor line and a clamp 16. A milling cutter mechanism and a laser finishing mechanism 8 are provided on one side of the conveyor line along its width direction. The conveyor line includes two conveying sections separated along its width direction. The clamp 16 includes two opposing clamping plates, which can open and close to clamp the side edges of the sheet metal 3. The clamping plates can clamp the upper and lower surfaces of the sheet metal 3 respectively. At least one clamping plate has an air chamber, and multiple air nozzles 17 communicating with the air chamber are provided on the outside of the clamping plate along the conveying direction. Any air nozzle 17 can adjustably draw or spray cold air. A pressure roller assembly 7 is provided above the conveyor line. The conveyor line includes a base frame 14. The conveying section near the milling cutter mechanism along its width direction is fixed to the base frame 14, and the other conveying section can be raised and lowered relative to the base frame 14.

[0014] See Figure 1 , Figure 2 Plate 3 is placed directly on the conveyor line. To facilitate displaying the positional relationship between the conveyor line and plate 3, in Figure 1 The clamp 16 is omitted, meaning that the side of the conveyor line near the milling cutter mechanism is not clamped by the aforementioned clamp 16, nor is the corresponding structure of the air nozzles 17 on the clamp plate arranged sequentially along the conveying direction of the conveyor line shown.

[0015] As a specific structural form, the conveyor line here is a roller conveyor line, which has multiple conveyor rollers arranged sequentially along the conveying direction, with the rotation axis of the conveyor rollers parallel to the width direction of the conveyor line. At least one conveyor roller is powered, which can be a rotary motor or a pneumatic motor, etc., and the power is transmitted sequentially between adjacent conveyor rollers through gear assemblies or pulley assemblies. More specifically, in the case where the conveyor line includes two conveying sections, the conveying section is... Figure 1 The first conveying section 5 and the second conveying section 6 shown are both separate roller conveying structures, supported on both sides of the plate 3 to be conveyed along its width. The separate design of the first conveying section 5 and the second conveying section 6 facilitates a lightweight design, resulting in a smaller overall conveyor line weight.

[0016] As a specific structural form, the conveyor line has a loading end and a unloading end. The sheet metal 3 enters the conveyor line from the loading end and exits from the unloading end. To achieve the effect of milling the side of the sheet metal 3 before laser finishing, the milling cutter mechanism is located on the side of the conveyor line near the loading end, and the laser finishing mechanism 8 is located on the side of the conveyor line near the unloading end. Therefore, when the sheet metal 3 is conveyed on the conveyor line, any point on the side surface of the sheet metal 3 passes the milling cutter mechanism first and then the laser finishing mechanism 8.

[0017] As can be seen, after milling the side surface of the plate 3 using a milling cutter mechanism, an uneven burr structure will be formed on the surface of the plate 3. The presence of this burr structure makes the roughness of the entire side surface of the plate 3 relatively large, making it difficult to obtain a smoother side surface. However, the laser finishing mechanism 8 here can emit a laser to the milled side surface. The laser can melt the burrs on the side surface of the plate 3, thereby reducing the roughness of the plate 3 surface and improving its smoothness.

[0018] The aforementioned processing of sheet material 3 includes both milling and laser finishing processes. It is known that milling generates a large amount of debris. This debris will remain on the side surface of sheet material 3, potentially mixing with burrs and hindering the laser's ablation effect on the burrs. Additionally, some debris will splatter, contaminating the work environment. During laser ablation, the side surfaces of sheet material 3 after ablation need to be rapidly cooled: firstly, this ensures that sheet material 3 reaches room temperature directly after being conveyed for further transport; secondly, it reduces the time the material on the side surfaces of sheet material 3 remains in a molten state, preventing material flow on the molten side surfaces and thus avoiding any impact on the roughness and flatness of sheet material 3 from laser ablation.

[0019] As mentioned above in this application, the suction mechanism installed at the milling cutter mechanism may affect the up-down, left-right, and rotational movement of the milling cutter mechanism. Furthermore, the fixed position of the suction nozzle 17 also prevents the application of cold air, hindering rapid gas cooling after laser finishing of the side surfaces of the sheet metal.

[0020] In this embodiment, an additional clamp 16 is provided, which moves along the conveyor line with the sheet metal 3. The clamp 16 does not need to be installed close to the milling cutter mechanism and the laser finishing mechanism 8, thus reducing the probability of positional interference between different structures. Furthermore, the air nozzle 17 here can perform different functions under different working conditions: when the milling cutter mechanism is milling a corresponding position of the sheet metal 3, the air nozzle 17 at that position acts as a suction device to remove debris; after moving away from the milling cutter mechanism and passing the laser finishing mechanism 8, the air nozzle 17 at that position can spray cold air to quickly cool and shape the side surface of the laser-finished sheet metal 3. In other words, each air nozzle 17 can play a corresponding role in both milling and laser finishing processes, which improves the efficiency of the air nozzle 17 and eliminates the need for two additional sets of air nozzles 17.

[0021] As can be seen, after the clamp 16 is installed on one side of the plate 3, the side of the plate 3 closest to the milling cutter mechanism along its width direction will be raised, causing the upper surface of the plate 3 to deviate from the horizontal state, and its side surface will no longer remain roughly horizontal. In this state, it is not convenient to align the milling cutter mechanism and the laser finishing mechanism 8 with the side surface of the plate 3, thus making it difficult to improve the processing accuracy of the side surface. To solve this problem, in this embodiment, the conveying part away from the milling cutter mechanism is set to be able to be raised and lowered vertically to adjust its own height, so that the heights of the two conveying parts are different, to compensate for the height difference caused by the clamp 16 being installed on one side of the plate 3, so that the plate 3 is still conveyed with its upper surface parallel to the conveying surface of the conveying line.

[0022] In this embodiment, the two clamping plates are hinged together by a hinge, and an elastic element is also installed between the two clamping plates to provide clamping force to the two clamping plates. The elastic element and the hinge are located at both ends of the clamping plates along the conveying direction.

[0023] Specifically, hinge supports 165 are respectively provided at both ends of the two clamping plates along the conveying direction of the conveyor line. The outer contour of the hinge supports 165 is roughly triangular. The two clamping plates are hinged to each other by a pin. The two clamping plates can be an upper clamping plate 161 and a lower clamping plate 164, and a set of elastic elements is provided between the upper clamping plate 161 and the lower clamping plate 164 at both ends of the conveyor line. As a specific structural form, the elastic elements can be springs 163, which are used in pairs. The two springs 163 are respectively provided on both sides of the hinge support 165 along the width direction of the clamping plate. It can be seen that the use of springs 163 can generate an inward clamping force between the two clamping plates. The structure of the hinge support 165 facilitates the opening of the two clamping plates to support the plate 3 when it is embedded.

[0024] In this embodiment, at least one of the clamps is slidably mounted with a detachable air chamber 162, which has an air cavity. The air cavity is divided into a first air cavity 1624 and a second air cavity 1622. The first air cavity 1624 is connected to the air extraction assembly, and the second air cavity 1622 is connected to the cold air pump. The air inlet end of the air nozzle 17 is connected to the first air cavity 1624 and the second air cavity 1622 through two pipes 174 respectively.

[0025] In one specific form, there is only one air chamber 162, which is mounted on the upper clamping plate 161 via a dovetail slide rail or a T-shaped slide rail. The air chamber 162 can slide and be positioned relative to the upper clamping plate 161. The sliding installation of the air chamber 162 with the upper clamping plate 161 facilitates the installation of different models of air chambers 162 on the clamping plate to meet the needs of different specifications of plates 3 after milling and laser finishing, which require different numbers and spacings of air nozzles 17.

[0026] Specifically, the interior of the air chamber 162 is first divided vertically by a flat plate 1621. The space above the flat plate 1621 is used to insert the lower end of the air nozzle 17. The inner cavity at the lower end of the air nozzle 17 is further divided into left and right parts by a partition plate 173. The space below the flat plate 1621 is divided by a vertical partition into the first air chamber 1624 and the second air chamber 1622, as described above. Two pipes 174 are respectively inserted into the first air chamber 1624 and the second air chamber 1622. A micro valve 1623 is respectively installed at the end of the pipes 174 inserted into the first air chamber 1624 and the second air chamber 1622 to control the closing of the different pipes 174, so that the air nozzle 17 can switch between the functions of evacuating air and spraying cold air.

[0027] Specifically, the aforementioned air extraction component can be an air extraction pump. A filter assembly should be installed between the air extraction pump and the first air chamber 1624 to prevent extracted debris from entering the air extraction pump. Additionally, the cold air pump includes an air pump and a semiconductor cooler. The airflow blown out by the air pump is cooled by the cold end of the semiconductor cooler to form cold air.

[0028] As a specific structural form, both the upper clamping plate 161 and the lower clamping plate 164 are square plates to facilitate fitting the upper surface of the plate 3. In other embodiments, the upper clamping plate 161 and the lower clamping plate 164 can be perforated plates, and their shapes can be irregular structures, which can be designed by those skilled in the art.

[0029] In this embodiment, the lifting drive assembly includes a vertical push rod; the two ends of the push rod are respectively hinged to the conveying part and the base frame 14.

[0030] Specifically, the first conveyor section 5 is located furthest from the milling cutter mechanism in the conveyor line, while the second conveyor section 6 is located closer to the milling cutter mechanism. The entire conveyor line includes a base frame 14, which supports the first and second conveyor sections 5 and 6. The base frame 14 has a bracket 4 facing inward along the conveying direction of the conveyor line, which supports the first conveyor section 5. An electric push rod 1 is fixed to the lower surface of the bracket 4. The housing of the electric push rod 1 is fixed through the bracket 4, and its telescopic rod passes upward through the bracket 4 and is fixed to the frame of the second conveyor section 6. During the up-and-down movement of the telescopic rod 1, the height of the upper surface of the first conveyor section 5 can be adjusted.

[0031] In this embodiment, the milling cutter mechanism includes two milling cutter assemblies (the first milling cutter assembly 9 and the second milling cutter assembly 10 shown in the figure). One milling cutter assembly is provided with a first milling cutter capable of milling the lower bevel of the plate 3, and the other milling cutter assembly is provided with a second milling cutter capable of milling the upper bevel of the plate 3.

[0032] Specifically, the milling cutter assembly here can adopt existing technology, such as the corresponding structure in patent CN221870410U. The milling cutter in the assembly only needs to be able to adjust its own posture. Of course, the milling cutter assembly can also adopt other structural forms, which can be designed by those skilled in the art.

[0033] In this embodiment, the laser finishing component includes a laser emitter 94 and a bracket 4. The laser emitter 94 can rotate and be positioned along an axis parallel to the conveying direction of the plate 3.

[0034] Specifically, a workbench 15 is provided on one side of the conveyor line. Two vertical supports 91 are mounted on the workbench 15. Each of the two vertical supports 91 has a support plate 93 mounted on it via a guide assembly 99, capable of vertical lifting and positioning. Rotating plates 95 are rotatably mounted on the first and second support plates 93. An arc-shaped rack 96 is mounted on each rotating plate 95, meshing with a gear 97. The gear 97 is rotatably connected to the support plate 93 via a rotating shaft, which is also fixed to a handwheel 92. A linkage plate is fixed between the two rotating plates 95, facilitating their linkage. A laser emitter 94 is fixed on the linkage plate, and the laser emitter 94 has a downward-facing laser head 98.

[0035] In this embodiment, the pressure roller assembly 7 can be raised, lowered, and positioned relative to the conveyor line.

[0036] Specifically, a vertical frame is installed on the workbench 15, with a cantilever 11 fixed to the upper end of the frame. The cantilever 11 extends towards one side of the conveyor line and is directly above the conveyor line. The cantilever 11 and the frame are located at both ends of the conveyor line along the conveying direction. A crossbeam 13 is installed between two cantilever 11s, and multiple lifting cylinders 12 are installed on the crossbeam 13. The cylinder body of the lifting cylinder 12 is fixed to the crossbeam 13, and its piston rod passes downward through the crossbeam 13 and is fixed to the pressure roller assembly 7. Thus, during the extension and retraction of the piston rod of the lifting cylinder 12, the pressure roller assembly 7 can be raised and lowered relative to the conveyor line.

[0037] The pressure roller assembly 7 here includes a cross frame 71, the two ends of which are slidably connected to the upright frame via vertical guide rails 73, and a row of pressure rollers 72 arranged sequentially along the conveying direction are provided on the cross frame 71.

[0038] In this embodiment, the air nozzle 17 includes a first section 172 and a second section 171 that are rotatably connected and connected by a hose (not shown in the figure). The first section 172 is fixed to the air chamber 162.

[0039] As a specific structural form, the first segment 172 extends vertically, the lower end of the first segment 172 is fixed to the upper clamping plate 161, and the lower end of the first segment 172 is inserted into the interior of the air chamber 162 so as to connect the first air chamber 1624 and the second air chamber 1622 mentioned above through the pipe 174 respectively.

[0040] The second segment 171 here is an L-shaped tube. The horizontal part of the second segment 171 is rotatably connected to the upper end of the first segment 172, and the ports of the two are sealed together by the aforementioned flexible tube. The vertical part of the second segment 171 extends vertically downward relative to the horizontal part, and the lowermost end of the second segment 171 forms an air outlet, which is located directly above the side surface of the plate 3.

[0041] In this embodiment, a retaining edge (not shown in the figure) is provided at one end of the conveyor line near the milling cutter mechanism along the width direction, and a pushing assembly (not shown in the figure) is provided at the other end to push the plate 3 towards the retaining edge. The pushing assembly includes a rotatable eccentric wheel, the shaft of which is vertically mounted on the base frame 14. During the rotation of the eccentric wheel, it can push the plate 3 towards the retaining edge, thereby facilitating the positioning of the plate 3 relative to the conveyor line along the width direction. In other embodiments, the pushing assembly uses an electric push rod 1 or a hydraulic push rod.

[0042] The above specific embodiments should not be construed as limiting the scope of protection of the present invention. For those skilled in the art, any alternative improvements or modifications made to the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0043] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A plate milling device, characterized in that, It includes a conveyor line and a fixture. The conveyor line is provided with a milling cutter mechanism and a laser finishing mechanism on one side along the width direction. The conveyor line includes two conveying sections separated along the width direction. The clamp includes two opposing clamping plates, which can be opened and closed to clamp the side of the plate. The clamping plates can be clamped on the upper and lower surfaces of the plate respectively. At least one of the clamping plates has an air chamber, and multiple air nozzles communicating with the air chamber are arranged on the outside of the clamping plate along the conveying direction. Any air nozzle can adjustably draw in or spray cold air. A pressure roller assembly is provided above the conveying line. The conveying line includes a base frame, and the conveying part near the milling cutter mechanism along the width direction is fixed to the base frame. The other conveying part can be raised and lowered relative to the base frame.

2. The sheet metal milling device according to claim 1, characterized in that, The two clamping plates are hinged together by a hinge, and an elastic element is installed between the two clamping plates to provide clamping force to the two clamping plates. The elastic element and the hinge are located at the two ends of the clamping plates along the conveying direction.

3. The sheet metal milling device according to claim 1, characterized in that, At least one of the clamps has a detachable air chamber slidably mounted on it, and the air chamber has the air cavity; the air cavity is divided into a first air cavity and a second air cavity, the first air cavity is connected to the air extraction assembly, the second air cavity is connected to the cold air pump, and the air inlet end of the air nozzle is connected to the first air cavity and the second air cavity through two pipes respectively.

4. The sheet metal milling device according to claim 1, characterized in that, The lifting drive assembly includes a vertical push rod; the two ends of the push rod are respectively hinged to the conveying part and the base frame.

5. The sheet metal milling device according to claim 1, characterized in that, The milling cutter mechanism includes two milling cutter assemblies, one of which is equipped with a first milling cutter capable of milling the lower bevel of the plate, and the other milling cutter assembly is equipped with a second milling cutter capable of milling the upper bevel of the plate.

6. The sheet metal milling device according to claim 1, characterized in that, The laser finishing assembly includes a laser emitter and a support. The laser emitter can rotate and be positioned along an axis parallel to the conveying direction of the sheet material.

7. The sheet metal milling device according to claim 1, characterized in that, The conveyor line is a roller conveyor line, and the pressure roller assembly can be raised, lowered, and positioned relative to the conveyor line.

8. The sheet metal milling device according to claim 1, characterized in that, The air nozzle includes a first section and a second section that are rotatably connected and connected by a hose. The first section is fixed to the air chamber.

9. The sheet metal milling device according to claim 1, characterized in that, The conveyor line has a retaining edge at one end near the milling cutter mechanism along its width direction, and a pushing edge assembly at the other end to push the plate towards the retaining edge.

10. The sheet metal milling device according to claim 9, characterized in that, The pushing edge assembly includes a rotatable eccentric wheel, the shaft of which is vertically mounted on the base frame.

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