A laser cutting device for multilayer composite materials

Abstract

This invention discloses a laser cutting device for multi-layer composite materials, applicable to the field of laser cutting. Through the coordinated action of a movable swing block and a connector, the device achieves automatic and orderly separation of the small pieces cut from the surface of the composite material and the residual frame after cutting. In distinguishing between the two, the swing block first pushes out the small pieces embedded in the frame row by row. Combined with the tilting of the sword grid and the blocking and guiding of the connector, the small pieces slide down to the collection frame in a specified direction. No manual picking or complex robotic arms are required, which significantly reduces labor intensity, space occupation and equipment cost. In addition, the use of a retractable cleaning block and a micro electric push rod enables the swing block to scrape and clean the slag on the surface of the grid plate inside the sword grid while swinging upward.

Description

Technical Field

[0001] This invention relates to the field of laser cutting, and in particular to a laser cutting apparatus for multilayer composite materials. Background Technology

[0002] Laser cutting technology utilizes a high-precision heat source to achieve non-contact cutting, perfectly avoiding the mechanical stress damage of traditional processes. Its narrow heat-affected zone allows for precise processing of composite materials used in electronic product manufacturing, producing smooth, burr-free cuts that ensure a perfect fit for precision structures. Furthermore, this technology supports high-speed continuous cutting of complex patterns, significantly improving production yield and efficiency, making it a core technology for manufacturing thin, lightweight, and highly reliable electronic products.

[0003] The prior art CN202510270029.X discloses a feeding and picking device for a laser cutting machine. The small parts after laser cutting are received by an unfolded feeding mechanism. When the size of the parts produced by cutting is large, the closed support plate and connecting cylinder can also buffer the falling parts. The parts are tilted and unloaded as the partition and feeding mechanism flip.

[0004] The prior art CN202411115213.9 discloses a plate laser cutting machine. By designing a toothed plate that can rotate along a crossbar, the cut parts remaining on the toothed plate after laser cutting can fall off smoothly by tilting. At the same time, by using a designed lifting mechanism in conjunction with a transmission unit, new plates and waste plates can be pushed and moved accordingly, eliminating the need for personnel to handle the plates and materials, thus improving cutting efficiency.

[0005] When cutting composite materials, the aforementioned laser cutting equipment uses a tilting method to facilitate material feeding. However, in actual operation, after the composite material is cut, the cut pieces and the remaining frame need to be separated. The existing technology can only achieve the corresponding material feeding process but cannot separate the two. Furthermore, the cut pieces are constrained by the frame groove formed by the cutting. A single slope cannot achieve effective material feeding, and further improvements are needed. Summary of the Invention

[0006] The core of this invention lies in the coordinated action of a movable swing block and a connector to achieve automatic and orderly separation of the cut pieces and residual frame from the surface of the composite material after cutting, solving the problem in existing technologies where the cut pieces and residual frame cannot be separated in an orderly manner when the inclined sword grid is used for material discharge. At the same time, by utilizing the cooperation of a retractable cleaning block and a micro electric actuator, the swing block can scrape and clean the slag on the surface of the grid plate inside the sword grid while swinging upward.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A laser cutting device for multilayer composite materials includes a cutting frame. Four rectangularly arranged hydraulic telescopic rods are installed inside the cutting frame. A support member is hinged to the power end of each hydraulic telescopic rod. A frame member is fixedly connected to the inner side of the support member. A sword grid is installed on the top of the frame member. A separating component is installed inside the frame member. The separating component includes a lead screw rotatably mounted on the inner wall of the frame member. A moving block is threaded onto the surface of the lead screw. A bushing is mounted on the surface of the moving block, and a rotating rod is rotatably connected to the inner side of the bushing. Multiple swing blocks are arranged on the surface of the rotating rod. A first support and a second support are mounted on the top of the moving block, located on one side of the rotating rod. A gear third is rotatably connected to the surface of the first support, and a gear second is connected to the end of the rotating rod. An electric actuator first is mounted on the surface of the second support, and a rack second is connected to the power end of the electric actuator first.

[0009] Furthermore, both rack two and gear two mesh with gear three. A guide rod is installed inside the frame component, and the guide rod is symmetrically arranged with the lead screw component. A drive motor with its output end connected to the end of the lead screw component is installed on the front of the frame component.

[0010] A second electric actuator is installed at the center of the front of the frame component via a connecting rod. The power end of the second electric actuator is connected to a sliding plate that slides through the surface of the frame component. A connector slides through the interior of the sliding plate, and limit plates are installed at both the upper and lower ends of the connector. A rack is fitted onto the surface of the connector, and a gear is meshed onto the surface of the rack.

[0011] Furthermore, a hanging plate is installed at the bottom of the sliding plate, and a rotating motor is installed on the surface of the hanging plate, with the output end of the rotating motor connected to the surface of gear one.

[0012] Furthermore, the cross-sectional dimensions of both the connector and the swing block are smaller than the distance between adjacent grid plates within the sword grid, and when flipped to an upward vertical position, the top of the swing block extends beyond the surface of the sword grid.

[0013] Furthermore, a cutting component is installed on the top of the cutting frame, a support plate is installed inside the cutting frame, a material collection frame located on one side of the sword grid is slidably connected to the top of the support plate, and a hopper with a conical cross section is connected to the bottom of the frame component.

[0014] Optionally, the rotating rod is equipped with a number of miniature electric actuators that are the same as the number of swing blocks, and the power end of the miniature electric actuators is connected to the swing blocks, with the swing blocks slidably connected to the surface of the rotating rod.

[0015] Furthermore, a power pipe is installed inside the swing block, and symmetrically arranged cleaning blocks are embedded on the surface of the swing block. Symmetrically arranged follower blocks are installed inside the power pipe. A return spring is connected between the two follower blocks, and the tail ends of the two follower blocks are fixedly connected to the surface of the cleaning blocks. A bridging piston rod is connected to the power end surface of the micro electric actuator, and a transfer liquid tank is installed inside the rotating rod.

[0016] Furthermore, the top of the transfer tank is connected to a delivery pipe whose tail end is connected to the inside of the power pipe, and the bridging piston rod is slidably fitted into the inside of the transfer tank.

[0017] Compared with the prior art, the advantages of this invention are: (1) This solution achieves automatic and orderly separation of the surface-cut pieces and the residual frame after the composite material is cut through the coordinated action of the movable swing block and the plug-in piece. When distinguishing the two, the swing block is used to push out the small pieces embedded in the frame one by one. Combined with the tilting of the sword grid and the blocking and guiding of the plug-in piece, the small pieces slide down to the collection frame in the specified direction. There is no need for manual picking or complex robotic arms, which significantly reduces labor intensity, space occupation and equipment cost.

[0018] (2) This solution integrates a micro electric push rod and a retractable cleaning block in the swing block to achieve both facilitating discharge and cleaning the sword grid. When the swing component pushes the cutting block down along the inclined sword grid surface during the discharge process, if the cutting block is relatively thin and may be deformed due to molten slag, the swing block can move in the opposite direction and move to the bottom of the cutting block before swinging again and combining with the extension of the micro electric push rod to push it out, assisting the cutting block to cross the molten slag. At the same time as the micro electric push rod extends, the cleaning block extends through hydraulic linkage, scraping off the stubborn molten slag on the sword grid surface during the movement, preventing it from causing extrusion damage to subsequent thin workpieces. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the sword gate, frame component, separating component, and electric actuator II of the present invention; Figure 3 This is a schematic diagram of the structure of the sliding plate, rotating motor, gear one, rack one, and connector of the present invention. Figure 4 This is a partial structural diagram of the differentiating component of the present invention; Figure 5 This is a structural schematic diagram of the distinguishing component and the swing block of the present invention; Figure 6 This is a partial front view of the sliding plate, plug-in component, and differentiating component within the frame of the present invention. Figure 7This is a schematic diagram of the swing block swinging upwards according to the present invention; Figure 8 This is a schematic diagram of the first column of the present invention, in which the cut pieces are pushed out by the swing block and the connector is inserted into the cut frame. Figure 9 A schematic diagram of the differentiating component of the present invention moving along the tilted sword grid surface and using a swing block to push the cutting pieces out of the frame; Figure 10 This is a schematic diagram illustrating how the oscillating component of the present invention continuously extends to actuate the small pieces of cutting material that are blocked by molten slag to move into the collection frame; Figure 11 This is a schematic diagram of the miniature electric actuator, cleaning block, transfer tank, and power pipe of the present invention. Figure 12 For the present invention Figure 11 Enlarged diagram of point A in the diagram; Figure 13 This is a schematic diagram of the present invention, in which a cleaning block extends synchronously from the surface of the swing block when the miniature electric actuator drives the swing block to extend, so as to clean the slag on the surface of the inner grid plate of the sword grid.

[0020] Explanation of the labels in the diagram: 1. Cutting frame; 2. Collection frame; 3. Lifting plate; 4. Hydraulic telescopic rod; 401. Support component; 5. Sword grid; 501. Frame component; 502. Hopper; 6. Electric push rod one; 7. Cutting component; 8. Drive motor; 9. Electric push rod two; 901. Sliding plate; 902. Rotary motor; 903. Gear one; 904. Rack one; 905. Connector; 906. Hanging plate; 10. Differentiating component; 101. Rotating rod; 102. Bushing; 103. Gear two; 104. Gear three; 105. Lead screw component; 106. Support one; 107. Moving block; 108. Support two; 109. Rack two; 11. Swing block; 1101. Cleaning block; 1102. Power pipe; 1103. Return spring; 12. Miniature electric push rod; 13. Transfer liquid tank; 14. Bridging piston rod. Detailed Implementation

[0021] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0022] Example 1:

[0023] Please see Figures 1-6A laser cutting device for multilayer composite materials includes a cutting frame 1. Four rectangularly arranged hydraulic telescopic rods 4 are installed inside the cutting frame 1. A support member 401 is hinged to the power end of each hydraulic telescopic rod 4. A frame member 501 is fixedly connected to the inner side of the support member 401. A sword grid 5 is installed on the top of the frame member 501. A separating component 10 is installed inside the frame member 501. The separating component 10 includes a lead screw 105 rotatably mounted on the inner wall of the frame member 501. A moving block 1 is threaded onto the surface of the lead screw 105. 07. A bushing 102 is mounted on the surface of the movable block 107, and a rotating rod 101 is rotatably connected to the inner side of the bushing 102. Multiple swing blocks 11 are arranged on the surface of the rotating rod 101. A bracket 106 and a bracket 2 108 located on one side of the rotating rod 101 are mounted on the top of the movable block 107. A gear 3 104 is rotatably connected to the surface of the bracket 106. A gear 2 103 is connected to the end of the rotating rod 101. An electric push rod 6 is mounted on the surface of the bracket 2 108, and a rack 2 109 is connected to the power end of the electric push rod 6.

[0024] Please see Figure 2 Both rack 2 109 and gear 2 103 mesh with gear 3 104. A guide rod is installed inside the frame 501, and the guide rod is symmetrically arranged with the lead screw 105. A drive motor 8 with its output end connected to the end of the lead screw 105 is installed on the front of the frame 501.

[0025] Please see Figure 3 and Figure 6 An electric actuator 9 is mounted on the center of the front of the frame member 501 via a connecting rod. The power end of the electric actuator 9 is connected to a sliding plate 901 that slides through the surface of the frame member 501. A connector 905 slides through the interior of the sliding plate 901, and limit plates are installed at both the upper and lower ends of the connector 905. A rack 904 is fitted onto the surface of the connector 905, and a gear 903 is meshed onto the surface of the rack 904. A hanging plate 906 is installed at the bottom of the sliding plate 901, and a rotating motor 902 is installed on the surface of the hanging plate 906. The output end of the rotating motor 902 is connected to the surface of the gear 903.

[0026] The cross-sectional dimensions of both the connector 905 and the swing block 11 are smaller than the distance between adjacent grid plates within the sword grid 5. When flipped to the upward vertical position, the top of the swing block 11 extends beyond the surface of the sword grid 5.

[0027] Please see Figure 1 The top of the cutting frame 1 is equipped with a cutting component 7, and the inside of the cutting frame 1 is equipped with a support plate 3. The top of the support plate 3 is slidably connected to a material collection frame 2 located on one side of the sword grid 5, and the bottom of the frame component 501 is connected to a hopper 502 with a conical cross section.

[0028] Specifically, the composite material placed on the surface of the sword grid 5 is cut using the cutting part 7. After the cutting is completed, the material needs to be unloaded. If manual material collection is used, the workload is large and the efficiency is low. If a robot arm is used in conjunction with the adjustment suction cup, the footprint and cost of the laser cutting device will increase. Therefore, this embodiment is adopted.

[0029] Before cutting begins, the composite material is placed tightly against the surface of the sword grid 5 on the side away from the collection frame 2, and the cutting dimensions are obtained. Then, the cutting part 7 is used to perform the corresponding cutting process. During the cutting process, the rotating rod 101 drives the swing block 11 to rotate to a downward vertical position, which can prevent slag from adhering to the surface of the swing block 11 (because the cross-sectional width of the swing block 11 is smaller than the diameter of the rotating rod 101, it can shield the swing block 11 during the falling of slag).

[0030] After cutting, start the drive motor 8 to drive the lead screw 105 (initially, the lead screw 105 is located near the edge inside the frame 501, blocked by the edge of the sword grid 5, so the molten slag falling during cutting will not fall onto the surface of the lead screw 105) to rotate, indirectly driving the moving block 107 to move a short distance towards the collection frame 2, until the rotating rod 101 moves below the first row of cut pieces, then stop the drive motor 8, start the electric push rod 6, and use the meshing transmission between the rack 109, gear 104 and gear 103 to drive the rotating rod 101 and the surface swing block 11 to gradually swing upward (as shown in the image). Figure 7 As shown), it can assist the first row of small cut pieces to detach from the frame surface formed after the composite material is cut. At the same time, the electric actuator 9 drives the sliding plate 901 to move into the frame member 501 until the vertical projection of the connector 905 is below the first row of small cut pieces. Then, the rotary motor 902 is started. Through the meshing transmission of the rack 904 and the gear 903, the connector 905 is moved upward until the top of the connector 905 extends above the composite material (as shown). Figure 8 (as shown), so that it can act as a barrier when the composite material tilts downwards, making it easier for the subsequent small pieces to be cut and removed from the frame.

[0031] After the connector 905 rises and acts as a barrier against the frame formed after the composite material is cut, both the electric actuator 9 and the rotary motor 902 stop working. At this time, the two hydraulic telescopic rods 4 near the collection frame 2 are activated, causing the sword grid 5 and the frame component 501 to tilt downwards, allowing the first row of separated cut pieces to slide along the surface of the composite material into the collection frame 2. Subsequently, the drive motor 8 is activated again, causing the lead screw component 105 to continue rotating, causing the moving block 107 to continue moving closer to the collection frame 2, so as to form a top-down, sequential separation and feeding operation (e.g., Figure 9 (As shown).

[0032] As the moving block 107 continues to approach the collection frame 2, the electric push rod 6 continues to start, indirectly driving the rotating rod 101 to rotate in the opposite direction, so that the swing block 11 gradually switches to a horizontal position. Until the moving block 107 moves to the position below the second column of cut pieces, the electric push rod 6, rack 109, gear 103 and gear 104 work together to switch the swing block 11 to an upward vertical position, thereby detaching the second column of cut pieces embedded in the frame and sliding and rolling down the inclined surface of the sword grid 5 into the collection frame 2.

[0033] After the last column of cut pieces is transferred, the composite material frame blocked by the connector 905 is transferred, and then the sword grid 5 returns to a horizontal state, and the moving block 107 and the connector 905 are reset accordingly.

[0034] After cutting, the size of the composite material plate is usually smaller than the cross-sectional size of the sword grid 5. When the cut piece slides down the inclined surface of the sword grid 5, the surface of the grid plates inside the sword grid 5 may be covered with slag from the previous cutting, which will hinder the downward movement of the cut piece. At this time, the swing block 11 can continue to swing upward and extend, continuing to move along the gap between adjacent grid plates inside the sword grid 5, which will have a pushing effect and help the blocked cut piece slide smoothly into the collection frame 2 (e.g., Figure 10 (As shown).

[0035] Example 2:

[0036] Please see Figures 11-12 The rotating rod 101 is equipped with a number of miniature electric actuators 12 that are the same number as the swing blocks 11. The power end of the miniature electric actuator 12 is connected to the swing block 11. The swing block 11 is slidably connected to the surface of the rotating rod 101. The swing block 11 is equipped with a power pipe 1102. The surface of the swing block 11 is inlaid with symmetrically arranged cleaning blocks 1101. The power pipe 1102 is equipped with symmetrically arranged follower blocks. A return spring 1103 is connected between the two follower blocks. The tail ends of the two follower blocks are fixedly connected to the surface of the cleaning block 1101. The power end surface of the miniature electric actuator 12 is connected with a bridging piston rod 14. The rotating rod 101 is equipped with a transfer liquid tank 13.

[0037] The top of the transfer tank 13 is connected to a liquid delivery pipe whose tail end is connected to the inside of the power pipe 1102, and the bridging piston rod 14 is slidably fitted into the inside of the transfer tank 13.

[0038] Specifically, in Example 1, the stable upward swinging extension of the swing block 11 is used to promote the discharge of material. However, because the surface of the inner grid plate of the sword grid 5 is covered with molten slag left over from the previous cutting operation, when the swing block 11 is used to promote the discharge and the cut pieces are thin, the cut pieces will be squeezed and deformed. To address this phenomenon, corresponding improvements are needed.

[0039] In this embodiment, when the swing block 11 is in the upward swinging state, a pressure sensor is embedded on the surface of the side near the collection frame 2. This sensor is used to help determine whether there is a possibility of compression deformation of the cut pieces when pushing and discharging. If the compression effect is maintained for a continuous period of time (the judgment threshold of the period of time can be selected according to the actual situation and is not fixed), it indicates that there is a possibility of compression deformation. At this time, the swing block 11 rotates in the opposite direction and moves with the moving block 107 to the bottom of the cut pieces. Then it continues to swing upward and activates the micro electric push rod 12, which drives the extension and push out, helping the cut pieces to pass through the obstruction area and slide down smoothly.

[0040] When the miniature electric actuator 12 drives the swing block 11 to extend, it drives the bridging piston rod 14 to move upward, thereby squeezing the liquid and causing the space between the two follower blocks (hereinafter referred to as the changing chamber, which is initially filled with sufficient liquid, and the space above the top of the bridging piston rod 14 is also filled with sufficient liquid. The return spring 1103 is treated with anti-corrosion to avoid rust, and the tail end of the bridging piston rod 14 and the inner wall of the transfer tank 13, as well as the inner walls of the follower blocks and the power pipe 1102, are in a sliding seal state) to be filled with liquid, causing the follower blocks to move outward, driving the cleaning block 1101 to extend, thereby increasing the cross-sectional width of the swing block 11, and enabling it to clean and scrape the slag on the surface of the inner grid plate of the sword grid 5 when it follows the moving block 107 away from the collection frame 2 (such as...). Figure 13 (As shown).

[0041] In addition, if one or more of the swing blocks 11 encounter the edge of the frame during the upward swing, the frame constraint will be difficult to perform smoothly during the first ejection. At this time, the overlapping frame edge and the position of the swing block 11 can be determined according to the size at the time of cutting, so that the swing block 11 at the corresponding position can be retracted under the action of the micro electric push rod 12 to avoid motion interference with the edge of the frame during the swing. When the micro electric push rod 12 retracts, the cleaning block 1101 will not protrude from the surface of the swing block 11.

[0042] Finally, the hydraulic telescopic rod 4, electric actuator 6, drive motor 8, electric actuator 9, rotary motor 902 and miniature electric actuator 12 in this application are all prior art. Their models and working principles are not described in detail here. The corresponding models can be selected according to actual needs.

[0043] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A laser cutting device for multilayer composite materials, comprising a cutting frame (1), characterized in that: The cutting frame (1) is equipped with four rectangularly arranged hydraulic telescopic rods (4). Each hydraulic telescopic rod (4) has a support member (401) hinged to its power end. A frame member (501) is fixedly connected to the inner side of the support member (401). A sword grid (5) is installed on the top of the frame member (501). A separating component (10) is installed inside the frame member (501). The separating component (10) includes a lead screw (105) rotatably mounted on the inner wall of the frame member (501). A moving block (107) is threaded onto the surface of the lead screw (105). The surface of the moving block (107) is... A bushing (102) is installed, and a rotating rod (101) is rotatably connected to the inner side of the bushing (102). Multiple swing blocks (11) are arranged on the surface of the rotating rod (101). A bracket one (106) and a bracket two (108) located on one side of the rotating rod (101) are installed on the top of the moving block (107). A gear three (104) is rotatably connected to the surface of the bracket one (106). A gear two (103) is connected to the end of the rotating rod (101). An electric push rod one (6) is installed on the surface of the bracket two (108), and a rack two (109) is connected to the power end of the electric push rod one (6).

2. The laser cutting device for multilayer composite materials according to claim 1, characterized in that: Both the second rack (109) and the second gear (103) mesh with the third gear (104). The frame (501) is equipped with a guide rod, which is symmetrically arranged with the lead screw (105). The front of the frame (501) is equipped with a drive motor (8) whose output end is connected to the end of the lead screw (105).

3. The laser cutting device for multilayer composite materials according to claim 1, characterized in that: An electric actuator (9) is installed at the center of the front of the frame member (501) via a connecting rod. The power end of the electric actuator (9) is connected to a sliding plate (901) that slides through the surface of the frame member (501). A connector (905) slides through the interior of the sliding plate (901), and limit plates are installed at both the upper and lower ends of the connector (905). A rack (904) is fitted onto the surface of the connector (905), and a gear (903) is meshed onto the surface of the rack (904).

4. The laser cutting device for multilayer composite materials according to claim 3, characterized in that: A mounting plate (906) is installed at the bottom of the sliding plate (901), and a rotating motor (902) is installed on the surface of the mounting plate (906), and the output end of the rotating motor (902) is connected to the surface of the gear (903).

5. A laser cutting device for multilayer composite materials according to claim 3, characterized in that: The cross-sectional dimensions of the connector (905) and the swing block (11) are both smaller than the distance between adjacent grid plates in the sword grid (5). When flipped to the upward vertical position, the top of the swing block (11) extends out of the surface of the sword grid (5).

6. The laser cutting device for multilayer composite materials according to claim 1, characterized in that: The top of the cutting frame (1) is equipped with a cutting component (7), and the inside of the cutting frame (1) is equipped with a lifting plate (3). The top of the lifting plate (3) is slidably connected to a material collection frame (2) located on one side of the sword grid (5). The bottom of the frame component (501) is connected to a hopper (502) with a conical cross section.

7. The laser cutting device for multilayer composite materials according to claim 1, characterized in that: The rotating rod (101) is equipped with a number of miniature electric actuators (12) that are the same as the number of swing blocks (11), and the power end of the miniature electric actuators (12) is connected to the swing blocks (11). The swing blocks (11) are slidably connected to the surface of the rotating rod (101).

8. A laser cutting device for multilayer composite materials according to claim 7, characterized in that: The swing block (11) is equipped with a power pipe (1102) inside. The surface of the swing block (11) is inlaid with symmetrically arranged cleaning blocks (1101). The power pipe (1102) is equipped with symmetrically arranged follower blocks inside. A return spring (1103) is connected between the two follower blocks. The tail ends of the two follower blocks are fixedly connected to the surface of the cleaning block (1101). The power end surface of the micro electric push rod (12) is connected with a bridging piston rod (14). The rotating rod (101) is equipped with a transfer liquid tank (13) inside.

9. A laser cutting device for multilayer composite materials according to claim 8, characterized in that: The top of the transfer tank (13) is connected to a liquid delivery pipe whose tail end is connected to the inside of the power pipe (1102), and the bridging piston rod (14) is slidably fitted into the inside of the transfer tank (13).

Images