A laser cutting device for processing laptop casings

Abstract

This invention relates to the field of laser cutting technology, and provides a laser cutting device for processing laptop casings, including an operating table and a laser cutting head mounted on its top; a movable frame is installed inside the operating table, and clamping structures are provided on both sides of the movable frame; a longitudinal plate is installed inside the movable frame, and a transverse plate is installed at the bottom of the longitudinal plate. This invention, through the clamping structure, incorporates a gear and rack mechanism between the outer support bar and the inner support block. When the outer support bar is in operation, the second rack meshes with the gear, driving the inner support block to move horizontally towards the inner wall of the casing sidewall, forming an adaptive inner support that extends into the sidewall. When laser cutting the top of the sidewall, this provides reliable back support for the thin-walled sidewall, effectively avoiding vibration, tool deflection, or deformation caused by lack of support. Simultaneously, the narrow edge design of the inner support block avoids the rounded transition section at the corner of the sidewall, ensuring the fit of the support and the integrity of the processing.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, and in particular to a laser cutting apparatus for processing laptop casings. Background Technology

[0002] Laptop casings are critical structural components that support and protect the delicate internal components. These casings are typically made of lightweight alloy metals and are characterized by thin walls, large dimensions, complex shapes, and intricate features such as sidewalls, clips, and ventilation holes. Furthermore, their laser cutting process requires specialized laser cutting equipment for laptop casing manufacturing. To address this, patent CN118385793B discloses a laser cutting device for processing laptop casings, including a support base. A top rod is fixedly mounted on the upper surface of the support base, and a waste collection hopper is fixedly mounted at the top of the top rod. Support rods, evenly spaced and arranged in a ring, are fixedly mounted on the inner wall of the waste collection hopper. A driving element is fixedly mounted at the end of each support rod. A disc is mounted at the driving end of the driving element. Multiple ring-shaped mounting openings are formed on the outer wall of the disc, and square grooves are formed on the inner walls of the mounting openings. A material support frame is placed in the square grooves to support and limit the laptop casing to be processed. This invention can ensure relative stability between the mounting plate and the laptop casing to be cut, making the cutting process more stable. Furthermore, this device can simultaneously perform cutting and compaction operations on different laptop casings, effectively improving processing efficiency and resulting in better performance. The aforementioned laser cutting equipment for laptop casing processing achieves simultaneous processing of different casings through a rotary multi-station design, which improves processing efficiency to a certain extent. However, it mainly relies on the material support frame to support the bottom surface of the casing and simple limiting through the outer edge. Laptop casings are thin-walled parts with poor rigidity. Under the dynamic cutting force or high-frequency vibration generated by the high-speed movement of the laser cutting head, it is difficult to completely suppress the local micro-vibration or displacement of the casing by simply relying on the bottom support and the outer edge limiting. Especially when cutting near the edge or suspended area, it is easy to cause the cutting size to exceed the tolerance or the appearance of vibration marks on the cut edge. Furthermore, the bottom shell of the laptop casing is a vertical wall structure perpendicular to the main plane on all four sides. It is not a simple straight wall. At the corners, the side walls form rounded transition sections. The material support frame and square channel structure used in the aforementioned comparative documents can only position the bottom surface and general shape of the casing. They cannot extend into the side walls to provide internal support clamping. When the laser cuts the top of the side wall, the side wall is prone to vibration or blade deformation due to lack of support, resulting in uneven opening edges and large dimensional deviations after cutting. Summary of the Invention

[0003] The purpose of this invention is to provide a laser cutting device for processing laptop casings, in order to solve the problem of insufficient clamping stability in existing laser cutting devices for processing laptop casings.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a laser cutting device for processing laptop shells, comprising an operating table and a laser cutting head mounted on its top; a movable frame is installed inside the operating table, and clamping structures are provided on both sides of the movable frame; a longitudinal plate is installed inside the movable frame, and a transverse plate is installed at the bottom of the longitudinal plate; a support column runs through the interior of both the longitudinal plate and the transverse plate, and an adjustment structure is provided at both ends of both the longitudinal plate and the transverse plate; the clamping structure includes inner support bars installed on both sides of the movable frame, and an outer support bar is provided on one side of each inner support bar; a connecting frame is provided on the outer side of each outer support bar, and clamping blocks are installed at both ends of each connecting frame; an arc-shaped plate is provided on one side of each connecting frame, and an arc-shaped frame is provided on one side of each clamping block.

[0005] Preferably, the connecting frame has connecting shafts fixed at equal intervals inside, and the top of the movable frame inside the connecting frame is provided with a bracket, and the bracket and the connecting shaft form a sliding structure.

[0006] Preferably, a first spring is wound around the outside of the connecting shaft, a first roller is installed on the outside of the connecting frame, and the positions of the first roller and the arc plate correspond to each other.

[0007] Preferably, the clamping blocks and the connecting frame are connected, and the clamping blocks are symmetrically distributed about the center line of the connecting frame. The clamping blocks and the movable frame form a sliding structure, and each clamping block is equipped with a pressure plate.

[0008] Preferably, each pressure plate is provided with a second spring at its top and a second roller is installed on the outer side of each pressure plate, with the position of the second roller corresponding to the arc-shaped frame.

[0009] Preferably, the inner side of the outer support bar is provided with inner support blocks at equal intervals, and the inner support blocks and the movable frame form a sliding structure. The bottom of each inner support block is fixed with a first rack, and the bottom of each first rack is equipped with a gear.

[0010] Preferably, a second rack is provided on one side of the gear, and the second rack is connected to the outer support bar. The gear is meshed with the first rack and the second rack respectively.

[0011] Preferably, there are several longitudinal plates and transverse plates, the movable frame has two sets of empty slots, and each empty slot is provided with a corresponding longitudinal plate and transverse plate. The support column forms a sliding structure with the longitudinal plate and the transverse plate respectively, and pulleys are installed at the connection between the support column and the longitudinal plate and the transverse plate. The longitudinal plate and the transverse plate form a sliding structure with the movable frame.

[0012] Preferably, connecting blocks are installed at both ends of the transverse plate and the longitudinal plate, and inclined grooves are provided at the top and bottom of the connecting blocks, with fixing plates installed on one side of each inclined groove.

[0013] Preferably, the fixing plate and the connecting block form a sliding structure, both ends of the inclined groove plate are fixed with connecting rods, and a sliding shaft is installed on one side of the fixing plate, and the sliding shaft passes through the interior of the inclined groove plate, thus forming a sliding structure between the inclined groove plate and the sliding shaft.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the laser cutting device for processing laptop shells achieves dual stable clamping of horizontal centering and vertical pressing through the mechanical linkage of station switching and clamping structure; the internal support block driven by gear and rack forms adaptive support for the inner wall of the side wall, effectively suppressing cutting deformation; the adjustable clearance gap and negative pressure adsorption of the support column optimize chip removal and positioning effect, and the parallel operation of dual stations significantly improves processing efficiency; 1. By setting up a clamping structure, the horizontal displacement of the moving frame during the workstation switching process, the arc plate and the first roller, and the arc frame and the second roller cooperate in sequence to realize the synchronous centering movement of the connecting frame and the clamping block, as well as the synchronous flipping and pressing of the pressure plate. The workstation switching action and the clamping action are mechanically linked, without the need for an additional independent power source. This not only reduces the complexity of control and manufacturing costs, but more importantly, it achieves the dual function of horizontal centering and vertical pressing and fixing of the laptop shell. Furthermore, considering the structural feature of the laptop shell with side walls, a gear and rack linkage mechanism is set between the outer support bar and the inner support block. When the outer support bar drives the shell to descend to the processing position under the drive of the cylinder, the second rack meshes with the gear, thereby driving the first rack and the inner support block to move horizontally towards the inner wall of the shell side wall, forming an adaptive inner support that precisely extends into the interior of the side wall. When laser cutting the top of the side wall, it provides reliable back support for the thin-walled side wall, effectively avoiding vibration, tool deflection, or deformation caused by lack of support. At the same time, the narrow edge design of the inner support block avoids the rounded transition section at the corner of the side wall, ensuring the fit of the support and the integrity of the processing. Furthermore, several support columns provide support, and the bottom is connected to a negative pressure suction device via a flexible hose. During the cutting process, a uniform negative pressure adsorption can be formed on the thin-walled shell, further enhancing the stability of the positioning. This, combined with the mechanical clamping, creates a dual fixing effect. When the laser cutting head moves at high speed, it can effectively suppress local micro-vibration or displacement of the shell. It is especially suitable for the stable processing of thin-walled parts at the cutting edge or in the suspended area, thereby improving cutting accuracy and product yield. 2. By setting up multiple sets of independently adjustable longitudinal plates, transverse plates, and support columns that can slide within them, and by using an adjustment structure to achieve flexible position adjustment of the support columns in the horizontal direction, workers can pre-leave clearance directly below each cutting path according to the laser cutting drawings, so that the molten slag and waste material after the laser cuts through the shell can fall freely, avoiding secondary fusion or beam interference caused by the contact between the molten slag and the support surface. 3. By setting up two sets of workstations and driving the moving frame forward and backward via an electric lead screw, a parallel operation mode of "cutting at one workstation and loading / unloading at the other workstation" is realized. The cooperation between the first and second rollers in the clamping structure and the arc plate and arc frame enables the workstation to automatically complete the centering clamping and pressing action when entering the cutting area, and automatically reset and release when leaving the cutting area. This realizes the pure mechanical linkage between clamping action and workstation switching, eliminating the waiting time and signal delay required for separate control of clamping action, effectively shortening auxiliary time and improving processing efficiency. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural schematic diagram of the present invention; Figure 2 This is a rear-view three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the mobile frame of the present invention; Figure 4 This is a three-dimensional structural diagram of the disassembled mobile frame of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the transverse and longitudinal plates of the present invention; Figure 6 This is a frontal three-dimensional structural diagram of the connecting frame of the present invention; Figure 7 This is a rear three-dimensional structural diagram of the connecting frame of the present invention; Figure 8 This is a top-view three-dimensional structural diagram of the outer support strip of the present invention; Figure 9 This is a three-dimensional structural diagram of the outer support strip of the present invention, viewed from below. Figure 10 This is a three-dimensional structural diagram of the inner support block of the present invention; Figure 11 This is a three-dimensional structural diagram of the adjustment structure of the present invention; Figure 12 This is a three-dimensional structural diagram of the connecting block of the present invention; Figure 13 This is a three-dimensional structural diagram of the connecting block of the present invention in a cross-sectional state; Figure 14 This is a three-dimensional structural diagram of the support column of the present invention.

[0016] The following are the annotations in the diagram: 1. Operating table; 2. Moving frame; 3. Clamping structure; 31. Arc plate; 32. Connecting frame; 321. Bracket; 322. Connecting shaft; 323. First roller; 324. First spring; 33. Clamping block; 331. Pressure plate; 332. Second spring; 333. Second roller; 34. Inner support bar; 35. Outer support bar; 351. Inner support block; 352. First rack; 353. Gear; 354. Second rack; 36. Arc frame; 4. Laser cutting head; 5. Longitudinal plate; 6. Support column; 61. Pulley; 7. Transverse plate; 8. Adjustment structure; 81. Connecting block; 82. Fixing plate; 83. Inclined groove plate; 84. Connecting rod; 85. Sliding shaft. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-14This invention provides a laser cutting device for processing laptop casings, comprising an operating table 1 and a laser cutting head 4 mounted on its top; a movable frame 2 is installed inside the operating table 1, and clamping structures 3 are provided on both sides of the movable frame 2; a longitudinal plate 5 is installed inside the movable frame 2, and a transverse plate 7 is installed at the bottom of the longitudinal plate 5; support columns 6 penetrate the interior of both the longitudinal plate 5 and the transverse plate 7, and adjustment structures 8 are provided at both ends of both the longitudinal plate 5 and the transverse plate 7; several longitudinal plates 5 and transverse plates 7 are provided; the movable frame 2 is provided with two sets of slots, and corresponding longitudinal plates 5 and transverse plates 7 are provided in each slot; the support columns 6 are respectively connected to the longitudinal plates 5 and 7. A sliding structure is formed between the transverse plates 7, and pulleys 61 are installed at the connection between the support column 6 and the longitudinal plate 5 and the transverse plate 7. A sliding structure is formed between the longitudinal plate 5 and the transverse plate 7 and the movable frame 2. A connecting block 81 is installed at both ends of the transverse plate 7 and the longitudinal plate 5. An inclined groove plate 83 is provided at the top and bottom of the connecting block 81. A fixing plate 82 is installed on one side of the inclined groove plate 83. A sliding structure is formed between the fixing plate 82 and the connecting block 81. A connecting rod 84 is fixed at both ends of the inclined groove plate 83. A sliding shaft 85 is installed on one side of the fixing plate 82. The sliding shaft 85 passes through the interior of the inclined groove plate 83. A sliding structure is formed between the inclined groove plate 83 and the sliding shaft 85. Reference Figure 5 , Figures 11-14 As shown, before using the device, the position of the support column 6 is adjusted according to the laser cutting processing drawing of the laptop shell. A gap is left directly below the cutting path. The inclined slot pieces 83 at both ends of the longitudinal plate 5 are simultaneously squeezed from above and below, causing the inclined slot pieces 83 to slide into the connecting block 81. The inclined slot piece 83 displaces the inclined slot design of its side wall, pulling the sliding shaft 85 and causing the fixing piece 82 to move closer to the connecting block 81. Thus, the fixing piece 82 moves away from the side wall of the moving frame 2, and the longitudinal plate 5 and the moving frame 2 are no longer fixed. The longitudinal plate 5 and the entire row of support columns 6 connected internally can be pulled to move laterally. After adjusting to the appropriate position, the inclined slot piece 83 is released. The outside of the connecting rod 84 is wrapped with springs. The compressed springs quickly rebound, pushing the fixing piece 82 closer to the moving frame 2 again. The 82 and the movable frame 2 are both equipped with fine teeth at their opposite positions to achieve locking and fixation through the fixing plate 82. Similarly, the adjustable transverse plate 7 can control the longitudinal displacement of the entire row of support columns 6 connected inside it, so that each support column 6 can be moved laterally and longitudinally. The support column 6 is equipped with pulleys 61 at the connection between it and the longitudinal plate 5 and the transverse plate 7 to reduce friction when adjusting the position. At the same time, rollers are installed at both ends of the longitudinal plate 5 and the transverse plate 7 to reduce friction with the movable frame 2 and improve the smoothness of the displacement. After the gap between several support columns 6 is adjusted, when laser cutting, the beam and molten slag after cutting through the computer shell will be directly injected into the gap below, and the metal scrap can fall freely to avoid secondary fusion and beam interference. A collection device is set under the gap to collect the scrap. Reference Figures 1-4 As shown, when the device is in use, electric lead screws are installed on both sides of the moving frame 2, which can drive the moving frame 2 to move back and forth. Two sets of workstations are set on the top of the moving frame 2. When the front workstation is laser cutting, the other workstation can be loaded and unloaded. First, the cut computer shell is removed, and then the shell to be processed is placed on the support column 6. The support column 6 provides support below it. Limit strips are set at both ends of the workstation. When the computer shell is placed, the front and back positions are determined. After the upper set of computer shells is laser cut, the electric lead screws are started to drive the moving frame 2 to move forward, moving the rear workstation to the cutting area. The cutting area is moved to the front. When the rear workstation is processed, the front end can be loaded and unloaded, thereby improving processing efficiency. The clamping structure 3 includes inner support bars 34 installed on both sides of the movable frame 2, and an outer support bar 35 is provided on one side of each inner support bar 34. A connecting frame 32 is provided on the outer side of each outer support bar 35, and clamping blocks 33 are installed at both ends of each connecting frame 32. An arc-shaped plate 31 is provided on one side of each connecting frame 32, and an arc-shaped frame 36 is provided on one side of each clamping block 33. Connecting shafts 322 are fixed at equal intervals inside the connecting frame 32. A bracket 321 is provided on the top of the movable frame 2 inside the connecting frame 32, and a sliding structure is formed between the bracket 321 and the connecting shaft 322. The outer side of the frame is wound with a first spring 324. The outer side of the connecting frame 32 is equipped with a first roller 323, and the positions of the first roller 323 and the arc plate 31 are corresponding. The clamping block 33 is connected to the connecting frame 32, and the clamping blocks 33 are symmetrically distributed about the center line of the connecting frame 32. The clamping block 33 and the moving frame 2 form a sliding structure. The inside of the clamping block 33 is equipped with a pressure plate 331. The top of the pressure plate 331 is provided with a second spring 332, and the outer side of the pressure plate 331 is equipped with a second roller 333. The position of the second roller 333 is corresponding to the arc frame 36. Reference Figures 1-7As shown, when the moving frame 2 moves the rear station forward, the first rollers 323 on both sides first contact the arc plate 31. The arc plate 31 is arc-shaped. As it moves, the first rollers 323 continuously push the two sets of connecting frames 32 towards the center as the curvature changes. The connecting frames 32 are connected to the clamping blocks 33, which move the clamping blocks 33 simultaneously. During the movement, the clamping blocks 33 have a lateral centering effect on the computer casing. After centering the computer casing, the two sets of second rollers 333 then contact the corresponding arc frame 36 simultaneously. The arc frame 36 has two sets symmetrically arranged, with their positions staggered to ensure that the two sets of second rollers 333 contact it simultaneously. The arc frame 36 is arched. When moved to the cutting area, the second roller 333 moves to the highest point of the arc frame 36, pushing the pressure plate 331 to flip towards the center position, fixing the two sides of the computer shell to the bottom of the inner support bar 34, while the front station moves forward and away from the cutting area. The second rollers 333 on both sides first move away from the highest point of the arc frame 36, and the outer side of the pressure plate 331 loses its pushing force. Under the tension of the second spring 332, the pressure plate 331 is driven to reset, losing its clamping on the two sides of the computer shell. Then the first roller 323 moves away from the arc plate 31. Under the rebound force of the first spring 324, the clamping block 33 is pushed to reset with the bracket 321 as the fulcrum, moving away from the cut computer shell, which facilitates the loading and unloading of materials by the workers and realizes the centering clamping while switching stations. Inner support blocks 351 are evenly spaced on the inner side of the outer support bar 35, and a sliding structure is formed between the inner support blocks 351 and the movable frame 2. A first rack 352 is fixed to the bottom of each inner support block 351, and a gear 353 is installed on the bottom of each first rack 352. A second rack 354 is provided on one side of the gear 353, and the second rack 354 is connected to the outer support bar 35. The gear 353 meshes with the first rack 352 and the second rack 354 respectively. Reference Figures 8-10As shown, when cutting a computer casing with side walls, after placement, the bottom of both side walls is located at the top of the outer support bar 35. A cylinder is installed at the bottom of the outer support bar 35. Activating the cylinder causes the outer support bar 35 to move downwards, causing the computer casing to descend and its top plate to contact the support column 6 and the inner support bar 34. Simultaneously with the downward movement of the outer support bar 35, the second rack 354 connected to it moves synchronously. Initially, the second rack 354 is not engaged with the gear 353. As the outer support bar 35 moves downwards until the top plate of the computer casing contacts the support column 6 and the inner support bar 34... When the support bar 34 contacts, the second rack 354 engages with the gear 353, causing the first rack 352 to shift to one side, which in turn causes the inner support block 351 connected to it to move synchronously closer to the inner wall of the computer casing side wall, thus providing an internal support effect. The narrow width of the inner support block 351 avoids the transition section of the rounded corner at the corner of the side wall. At the same time, the bottom ends of the support columns 6 are all connected to the negative pressure suction device through hoses. When the fixing is completed, the negative pressure suction device is activated. While the support column 6 provides support, it can firmly adsorb the thin-walled computer casing through negative pressure, further enhancing the stability of the positioning.

[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser cutting device for processing laptop casings, comprising an operating table (1) and a laser cutting head (4) mounted on its top; Its features are: The operating table (1) is equipped with a movable frame (2), and clamping structures (3) are provided on both sides of the movable frame (2). The movable frame (2) is equipped with a longitudinal plate (5), and a transverse plate (7) is installed at the bottom of the longitudinal plate (5). Both the longitudinal plate (5) and the transverse plate (7) have support columns (6) running through their interiors, and both ends of the longitudinal plate (5) and the transverse plate (7) are provided with adjustment structures (8). The clamping structure (3) includes inner support bars (34) installed on both sides of the movable frame (2), and an outer support bar (35) is provided on one side of each inner support bar (34). A connecting frame (32) is provided on the outer side of each outer support bar (35), and clamping blocks (33) are installed at both ends of each connecting frame (32). An arc plate (31) is provided on one side of each connecting frame (32), and an arc frame (36) is provided on one side of each clamping block (33).

2. The laser cutting device for processing laptop casings according to claim 1, characterized in that: The connecting frame (32) has connecting shafts (322) fixed at equal intervals inside. The top of the movable frame (2) inside the connecting frame (32) is provided with a bracket (321), and the bracket (321) and the connecting shaft (322) form a sliding structure.

3. The laser cutting device for processing laptop casings according to claim 2, characterized in that: The connecting shaft (322) is wound with a first spring (324), and a first roller (323) is installed on the outside of the connecting frame (32), and the positions of the first roller (323) and the arc plate (31) are corresponding.

4. The laser cutting device for processing laptop casings according to claim 1, characterized in that: The clamping block (33) and the connecting frame (32) are connected, and the clamping block (33) is symmetrically distributed about the center line of the connecting frame (32). The clamping block (33) and the moving frame (2) form a sliding structure. Each clamping block (33) has a pressure plate (331) installed inside.

5. The laser cutting apparatus for processing laptop casings according to claim 4, characterized in that: The top of each pressure plate (331) is provided with a second spring (332), and the outer side of each pressure plate (331) is provided with a second roller (333). The position of the second roller (333) corresponds to that of the arc frame (36).

6. The laser cutting apparatus for processing laptop casings according to claim 1, characterized in that: The inner side of the outer support bar (35) is provided with inner support blocks (351) at equal intervals, and the inner support blocks (351) and the movable frame (2) form a sliding structure. The bottom of each inner support block (351) is fixed with a first rack (352), and the bottom of each first rack (352) is equipped with a gear (353).

7. The laser cutting apparatus for processing laptop casings according to claim 6, characterized in that: A second rack (354) is provided on one side of the gear (353), and the second rack (354) is connected to the outer support bar (35). The gear (353) is meshed with the first rack (352) and the second rack (354) respectively.

8. The laser cutting apparatus for processing laptop casings according to claim 1, characterized in that: The longitudinal plate (5) and the transverse plate (7) are provided in several units. The movable frame (2) is provided with two sets of empty slots, and the corresponding longitudinal plate (5) and transverse plate (7) are provided in the empty slots. The support column (6) forms a sliding structure with the longitudinal plate (5) and the transverse plate (7) respectively. The connection between the support column (6) and the longitudinal plate (5) and the transverse plate (7) is provided with pulleys (61). The longitudinal plate (5) and the transverse plate (7) form a sliding structure with the movable frame (2).

9. The laser cutting apparatus for processing laptop casings according to claim 8, characterized in that: Both ends of the transverse plate (7) and the longitudinal plate (5) are equipped with connecting blocks (81), and the top and bottom of the connecting blocks (81) are provided with inclined groove pieces (83), and a fixing piece (82) is installed on one side of each inclined groove piece (83).

10. The laser cutting apparatus for processing laptop casings according to claim 9, characterized in that: The fixed plate (82) and the connecting block (81) form a sliding structure. Both ends of the inclined groove plate (83) are fixed with connecting rods (84). A sliding shaft (85) is installed on one side of the fixed plate (82), and the sliding shaft (85) passes through the interior of the inclined groove plate (83). The inclined groove plate (83) and the sliding shaft (85) form a sliding structure.

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