Electrical laminate die cutting apparatus
By using a preheating and cooling device and a dynamic pressing device during the laser cutting process, the problems of product deformation and interlayer delamination caused by temperature differences in laser cutting technology have been solved, achieving efficient temperature control and pressing, and improving the processing quality of electrical laminated products.
Patent Information
- Application Number
- CN202611053682.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-15
- Publication Date
- 2026-08-25
AI Technical Summary
Existing laser cutting technology has problems in the processing of electrical laminated products, such as large temperature differences before and after cutting, which leads to product deformation and quality defects, and the delamination phenomenon between layers is difficult to control effectively during the cutting process.
A preheating and cooling device moves synchronously with the laser cutting machine. Preheating before cutting and rapid cooling after cutting are achieved through the exhaust housing and wind force adjustment device. Combined with the dynamic pressing device, the laminate near the cutting path is dynamically pressed to reduce temperature difference and stress.
It effectively reduces the risk of deformation in laminated products, improves product quality, prevents delamination between layers, and ensures cutting accuracy and consistency.
Smart Images
Figure CN122625855A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of die-cutting technology for laminated products, and particularly to a die-cutting device for electrical laminated products. Background Technology
[0002] Electrical laminates are key electrical materials formed by hot-pressing multiple layers of insulating materials. They are widely used in transformers, motors, electrical equipment, and other fields, and their processing precision directly affects the insulation performance and safety reliability of electrical equipment. Die-cutting is one of the core processes in the production of electrical laminates. Currently, the mainstream processing methods include mechanical punching and laser cutting. Among them, laser cutting has become the preferred technology for high-precision electrical laminate processing due to its advantages such as high cutting precision, smooth cut edges, and no mechanical stress damage.
[0003] However, when existing laser cutting technology is applied to the processing of electrical laminated products, there are still many technical pain points that need to be addressed, as follows:
[0004] During laser cutting, the laser beam generates localized high temperatures in the cutting area. These localized high temperatures can cause thermal stress inside the laminated product. The thermal expansion coefficients of the different layers of material vary, and thermal stress can easily cause warping, deformation, or even cracking of the product. Current technologies only rely on natural cooling or external cooling fans for cooling, which has low cooling efficiency and the residual heat left after cutting the laminated product cannot be utilized. It is impossible to preheat the area before cutting to further reduce thermal stress.
[0005] The hot airflow and mechanical vibration generated during the cutting process will further aggravate the separation between layers, that is, the "delamination" phenomenon. The "delamination" phenomenon is mainly internal cooling and external heating or internal heating and external cooling. This means that the cooling rate of laminated products after cutting must be kept consistent to avoid the phenomenon of internal heating and external cooling. As a result, laminated products cannot achieve rapid cooling when internal cooling and external heating occur, and the "delamination" phenomenon will continue to occur during the cooling process, causing the "delamination" phenomenon of laminated products to gradually increase.
[0006] For cutting large-sized or complex-shaped electrical laminates, the laser cutting machine needs to move along a predetermined trajectory. However, existing dynamic pressing devices mostly use independent drive mechanisms. When there is a lag or offset between the pressing device and the cutting position, the interlayer stress in the cutting area cannot be released in time, significantly increasing the risk of delamination. It is also difficult to continuously press and suppress areas that have already shown a delamination trend.
[0007] Therefore, it is necessary to invent a die-cutting device for electrical laminated products to solve the above problems. Summary of the Invention
[0008] The purpose of this invention is to provide a die-cutting device for electrical laminated products, so as to solve the problem mentioned in the background art that it is impossible to simultaneously achieve preheating before cutting and cooling after cutting, resulting in product deformation and quality defects due to temperature difference during cutting.
[0009] To achieve the above objectives, the present invention provides the following technical solution: a die-cutting device for electrical laminated products, comprising: Conveyor; A sliding frame, which is mounted on top of the conveyor; A laser cutting machine, which is mounted on a sliding frame and slides along the length of the sliding frame; The preheating and cooling device consists of two sets, upper and lower, arranged symmetrically around the laminate as the axis. It is used to extract the residual heat after the laminate is cut and cool it down, and to preheat the laminate before the cut by relying on the residual heat.
[0010] Optional, the preheating and cooling device includes: The exhaust housing is slidably mounted on the sliding frame and slides synchronously with the laser cutting machine. Along the cutting direction of the laminate, the exhaust housing has an exhaust duct and an inlet duct installed at the front and rear ends, respectively. There are multiple exhaust vents, which are located on the side of the exhaust housing near the laminate. When the airflow passes through the exhaust housing quickly, it creates a negative pressure and uses the exhaust vents to extract heat from the laminate.
[0011] Optionally, the preheating and cooling device also includes an airflow adjustment device consisting of a downward pressure structure, a rocker structure, and a wind baffle. The pressure structure is installed inside the exhaust housing and extends to the outside of the exhaust housing, and a first compression spring is installed between the pressure structure and the inner wall of the exhaust housing. A baffle plate is installed at the connection between the air outlet duct and the exhaust housing. The rocker structure is installed inside the exhaust housing and, when the downward pressure structure slides, it drives the baffle plate to adjust the overlap size with the exhaust duct.
[0012] Optionally, a slide rail for sliding the baffle plate is fixedly installed on the inner wall of the rear end of the exhaust housing, and the outer side of the baffle plate is wrapped with sealing rubber.
[0013] Optionally, a threaded block is fixedly installed on the side of the exhaust housing away from the laminate, and a threaded rod and a first guide rod are inserted inside the threaded block. The threaded rod and the first guide rod are installed on the sliding frame.
[0014] Optional, also includes: The guide device consists of two sets, which are mounted on the sliding frame; The constant pressure bonding device is provided in two sets, which are respectively clamped on both sides of the laminate; The dynamic pressing device has multiple sets and is installed on the guiding device to move with the laser cutting machine.
[0015] Optionally, the guiding device includes: The frame has multiple panels, which are installed on the sliding frame; The second guide rod, which has two parts, is installed on the sliding frame and passes through multiple frame plates; Multiple electromagnetic clutches are provided and mounted on the frame plate; There are multiple drive rods, and each pair of adjacent drive rods is connected by an electromagnetic clutch.
[0016] Optionally, both the constant pressing device and the dynamic pressing device include: A sliding block, which is installed on the outside of the guiding device; The telescopic rod is mounted on the sliding block; A pressing component, which is mounted on a telescopic rod and used to press laminates.
[0017] Optionally, the dynamic pressing device also includes: A polygonal sleeve is slidably mounted inside the sliding block and fitted onto the outside of the drive rod; There are two second compression springs, which are installed on both sides of the polygonal sleeve. A limiting ring plate for blocking the second compression spring is installed on the sliding block, and the limiting ring plate is fixed inside the sliding block. The guide slide is located on the outside of the drive rod, and a sliding head fixed in a polygonal sleeve is slidably installed inside the guide slide.
[0018] Optionally, the guide slide consists of a spiral section and two circular sections, with the two circular sections connected to the two ends of the spiral section respectively.
[0019] The technical effects and advantages of this invention are as follows: 1. The preheating and cooling device of the present invention moves synchronously with the laser cutting machine, which can move the residual heat after the cutting position to the front side of the cutting position for preheating. This not only achieves timely cooling of the cutting part and avoids defects in laminated products due to high temperature, but also preheats the laminate before cutting, reduces the temperature difference before and after cutting, reduces the risk of product deformation, and improves product quality.
[0020] 2. The airflow adjustment device in the preheating and cooling device of the present invention can improve the airflow effect of the exhaust port according to the severity of the delamination of the laminate, accelerate the heat dissipation of the laminate, reduce the temperature difference between the inside and outside of the laminate, so that the laminate can be quickly shaped and no longer delaminated. At the same time as rapid heat dissipation, the airflow adjustment device will also squeeze the laminate to prevent the delamination of the laminate.
[0021] 3. The dynamic pressing device of the present invention moves with the laser cutting machine and dynamically presses the laminate near the cutting path, effectively reducing the stress of the laser cutting machine during the cutting process and preventing the laminate from delaminating during the cutting process. At the same time, after moving to the designated position, it can stay at the corresponding position, so that the dynamic pressing device can effectively prevent the delaminating laminate from continuing to delaminate. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the constant pressure closing device of the present invention; Figure 3 This is a schematic diagram of the preheating and cooling device of the present invention; Figure 4 This is a schematic diagram of the internal structure of the preheating and cooling device of the present invention; Figure 5 This is a schematic diagram of the downward pressing structure of the present invention; Figure 6 This is a schematic diagram of the guiding device structure of the present invention; Figure 7 This is a schematic diagram of the dynamic pressing device of the present invention; Figure 8 This is a schematic diagram of the polygonal sleeve structure of the present invention; Figure 9 This is a schematic diagram of the guide slide structure of the present invention.
[0023] In the diagram: 100, conveyor; 200. Sliding frame; 300. Laser cutting machine; 400. Preheating and cooling device; 410. Exhaust housing; 420. Air outlet duct; 430. Air inlet duct; 440. Exhaust port; 411. Filter screen; 450. Wind speed adjustment device; 451. Downward pressure structure; 4511. Pressure plate; 4512. Directional rod; 4513. Lifting plate; 4514. First compression spring; 4515. Horizontal plate; 452. Rocker structure; 4521. Central support plate; 4522. End support plate; 453. Wind baffle plate; 454. Slide rail; 456. Sealing rubber; 457. Threaded block; 458. Threaded rod; 459. First guide rod; 500. Guiding device; 510. Frame plate; 520. Second guide rod; 530. Electromagnetic clutch; 540. Drive rod; 600. Constant pressure closing device; 700. Dynamic pressing device; 710. Sliding block; 720. Telescopic rod; 730. Pressing component; 740. Polygonal sleeve; 750. Second compression spring; 751. Limiting ring plate; 760. Guide slide; 761. Spiral part; 762. Circular part; 770. Sliding head. Detailed Implementation
[0024] 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.
[0025] This invention provides, for example Figure 1-9 The electrical laminate product die-cutting apparatus shown includes: The conveyor 100 is composed of multiple cross frames and frames. It moves the electrical laminate to the cutting position by rotating the rollers, and is then fixed by multiple points after moving to the corresponding position. The sliding frame 200 is mounted on the top of the conveyor 100 and is used to mount the laser cutter 300. The sliding frame 200 is equipped with a drive motor and a lead screw. The drive motor (not shown in the figure) is used as a power source to drive the laser cutter 300 to slide at a certain speed. The laser cutting machine 300 is mounted on the sliding frame 200 and slides along the length of the sliding frame 200. In this embodiment, the laser cutting machine 300 can be implemented using various existing technologies such as CO2 laser cutting machine, gantry laser cutting machine or cantilever laser cutting machine. The laser cutting machine 300 relies on the drive motor mounted on the sliding frame 200 as the power source. When the drive motor is started, it drives the laser cutting machine 300 to move at a predetermined speed. The preheating and cooling device 400 consists of two sets, upper and lower, symmetrically arranged around the laminated plate as an axis. Each set has two preheating and cooling devices 400 arranged front and rear, with the two devices in the same set symmetrically arranged around the laser cutting machine 300 as an axis of symmetry. The preheating and cooling devices 400 move synchronously with the laser cutting machine 300, and the distance between the preheating and cooling devices 400 and the laser cutting machine 300 remains constant. The preheating and cooling devices 400 create a suction effect through the rapid airflow through the orifice (a physical phenomenon arising from fluid mechanics principles, where the fluid velocity increases as it passes through a narrow section of a pipe, causing the pressure in that area to be lower than the surrounding environment pressure). This creates a suction effect. Compared to natural heat dissipation, the suction effect creates negative pressure, which accelerates the airflow rate near the cutting position of the laminate, thereby rapidly reducing the temperature of the cutting position and achieving rapid heat dissipation. At the same time, the residual heat at the cutting position is collected inside the preheating and cooling device 400. The collected residual heat is then combined with hot air input into the preheating and cooling device 400 by a hot air device (hot air blower, air pump, etc.) and transported through the air duct to a position 50-100mm in front of the cutting position to preheat the area of the laminate product to be cut. The preheating temperature can be controlled at 50-80℃, effectively reducing the temperature difference before and after cutting. The preheating and cooling device 400 moves synchronously with the laser cutting machine 300, which can move the residual heat after the cutting position to the front of the cutting position for preheating. This not only achieves timely cooling of the cutting part and avoids defects in laminated products due to excessive temperature difference, but also preheats the laminate before cutting, reduces the temperature difference before and after cutting, reduces the risk of product deformation, and improves product quality.
[0026] The working principle of this embodiment is as follows: In use, the laminate is placed on the conveyor 100 and pushed to the corresponding cutting position. Then the laminate is clamped and fixed. The hot air device (hot air blower, air pump, etc.) connected to the preheating and cooling device 400 is started. Then the drive motor on the sliding frame 200 is started, so that the sliding frame 200 drives the laser cutting machine 300 and the preheating and cooling device 400 to move along the cutting direction. During the movement, the preheating and cooling device 400 preheats the laminate before the cutting position and cools it after the cutting position.
[0027] During the cutting process, the hot air device provides hot air flow to the preheating and cooling device 400. When the air flow passes through the preheating and cooling device 400, it forms an air suction effect, which extracts the residual heat after the laminate is cut and guides the residual heat to the front of the cutting position for preheating.
[0028] To achieve proper airflow and preheating and cooling of the laminate, in some embodiments of the present invention, reference is made to... Figure 3 and Figure 4As shown, the preheating and cooling device 400 includes: The exhaust housing 410 is slidably mounted on the sliding frame 200. When the laser cutting machine 300 moves, the exhaust housing 410 moves synchronously with the laser cutting machine 300. Along the cutting direction, the exhaust housing 410 has an exhaust duct 420 and an intake duct 430 fixedly installed at its front and rear ends, respectively. The inner diameter of the exhaust duct 420 is larger than the inner diameter of the intake duct 430, so that a fast-flowing airflow is formed inside the exhaust housing 410, and the fast-flowing airflow forms an air suction effect. The air outlet ducts 420 located on both sides of the laser cutting machine 300 preheat the cutting area, and the air outlet direction of the air outlet ducts 420 is inclined towards the cutting area, so that the two hot air streams converge in the cutting area and improve the preheating effect of the cutting area. Multiple exhaust vents 440 are provided and are located on the side of the exhaust housing 410 near the laminate. Each exhaust vent 440 is elongated. When the airflow passes through the exhaust housing 410 quickly, a negative pressure is formed. By relying on the exhaust vents 440 to extract heat from the laminate, the airflow speed in the laminate cutting area is accelerated, thereby accelerating heat dissipation. The exhaust vents 440 are inclined towards the exhaust duct 420. When the airflow enters the exhaust housing 410 from the inlet duct 430 and flows quickly along the inner wall of the housing, a negative pressure zone is formed at the exhaust vent 440. Guided by the inner wall of the exhaust vent 440, heat from the laminate cutting area can be efficiently extracted.
[0029] In some embodiments of the present invention, reference is made to... Figure 4 As shown, a filter screen 411 is attached inside the exhaust vent 440. The filter screen 411 filters out debris in the extracted hot air, preventing debris from drifting to the front of the cutting position with the airflow and also preventing debris from scattering everywhere and creating a safety hazard.
[0030] To adjust the heat dissipation effect, in some embodiments of the present invention, reference is made to... Figure 3 and Figure 4 As shown, the preheating and cooling device 400 also includes an airflow adjustment device 450 composed of a pressing structure 451, a rocker structure 452, and a wind baffle 453. The pressing structure 451 is installed inside the exhaust housing 410 and extends to the outside of the exhaust housing 410. The pressing structures 451 on the upper and lower preheating and cooling devices 400 are clamped on the upper and lower sides of the laminate, so that an airflow guiding space is formed between the exhaust housing 410 and the pressing structure 451, ensuring that hot air can enter the interior of the exhaust housing 410 normally. This provides a reliable structural basis for the wind pressure regulation and flow control of the entire ventilation system. At the same time, the pressing structure 451 can also compress the laminate. When the laminate is slightly delaminated, it can directly flatten the laminate. A first compression spring 4514 is installed between the pressing structure 451 and the inner wall of the exhaust housing 410, which applies an outward preload force to the pressing structure 451 in the natural state. The wind baffle 453 is set at the connection between the air outlet duct 420 and the exhaust housing 410. The maximum moving distance of the wind baffle 453 is 30% to 50% of the inner diameter of the air outlet duct 420. While the pressure structure 451 is raised and lowered, the wind baffle 453 is driven to rise and fall synchronously to adjust the air outlet area of the air outlet duct 420, change the airflow speed, thereby adjusting the exhaust effect of the exhaust port 440 and changing the heat dissipation speed. The rocker structure 452 is installed inside the exhaust housing 410. When the pressing structure 451 slides, it drives the baffle plate 453 to adjust the overlap size with the exhaust duct 420. When the pressing structure 451 slides into the exhaust housing 410, it pushes one end of the rocker structure 452 to lift upward around the pin axis, while the other end rotates downward and drives the baffle plate 453 to move closer to the exhaust duct 420, increasing the overlap area. Conversely, when the pressing structure 451 slides outward, the rocker structure 452 drives the baffle plate 453 to move away from the exhaust duct 420, reducing the overlap area, thereby adjusting the wind force.
[0031] Among them, the wind force adjustment device 450 in the preheating and cooling device 400 can improve the exhaust effect of the exhaust port 440 according to the severity of the delamination of the laminate, accelerate the heat dissipation speed of the laminate, reduce the temperature difference between the inside and outside of the laminate, so that the laminate can quickly set and stop delamination. At the same time as rapid heat dissipation, the wind force adjustment device 450 will also squeeze the laminate to prevent the delamination of the laminate.
[0032] In some embodiments of the present invention, reference is made to... Figure 4 As shown, the pressing structure 451 includes: Pressure plate 4511, multiple pressure plates 4511 are provided and connected together by horizontal plate 4515, so that multiple pressure plates 4511 can be raised and lowered synchronously, so that multiple pressure plates 4511 can simultaneously squeeze the laminate. The outer side of the pressure plate 4511 is set as arc shape. The directional rod 4512 is fixedly installed on the pressure plate 4511 and slides through the exhaust housing 410 and extends into the exhaust housing 410 to prevent the pressure plate 4511 and the lifting plate 4513 from shifting during lifting. The lifting plate 4513 is snapped into the inner end of the directional rod 4512. The lifting plate 4513 and the pressure plate 4511 rise and fall synchronously, and drive the rocker structure 452 during the rising and falling.
[0033] In some embodiments of the present invention, reference is made to... Figure 4 As shown, the rocker structure 452 includes: The central support plate 4521 is rotatably mounted inside the exhaust housing 410 via a shaft; There are two end plates 4522, which are slidably inserted at both ends of the central plate 4521, and the two end plates 4522 are respectively hinged to the frontmost lifting plate 4513 and the wind baffle plate 453 through shafts.
[0034] During rotation, the end plate 4522 slides along the length of the central plate 4521, and the hinge position of the central plate 4521 is close to the foremost lifting plate 4513, so that the lifting distance of the lifting plate 4513 is much smaller than the lifting distance of the wind baffle 453, thereby increasing the lifting distance of the wind baffle 453.
[0035] In some embodiments of the present invention, reference is made to... Figure 4 As shown, a slide rail 454 for sliding the baffle plate 453 is fixedly installed on the inner wall of the rear end of the exhaust housing 410. The slide rail 454 is configured to guide the sliding of the baffle plate 453. The outer side of the baffle plate 453 is wrapped with sealing rubber 456. The sealing rubber 456 contacts the inner wall of the exhaust housing 410, which can effectively prevent airflow from leaking from the gap between the baffle plate 453 and the exhaust housing 410, ensuring the stability of the gas flow inside the exhaust housing 410 and maintaining the cooling effect.
[0036] In some embodiments of the present invention, reference is made to... Figure 4 As shown, a threaded block 457 is fixedly installed on the side of the exhaust housing 410 away from the laminate. A telescopic structure for adjusting the height of the exhaust housing 410 is fixedly installed between the threaded block 457 and the exhaust housing 410. A threaded rod 458 and a first guide rod 459 are inserted inside the threaded block 457. The threaded rod 458 and the first guide rod 459 are rotatably mounted on the sliding frame 200. The threaded rod 458 cooperates with the threaded structure on the inner wall of the threaded block 457. Through rotational movement, the threaded block 457 achieves axial linear displacement, thereby driving other connected components to move. The first guide rod 459 mainly plays a guiding and supporting role, ensuring that the threaded rod 458 remains stable during movement, reducing unnecessary shaking and offset, and improving the movement accuracy and reliability of the overall structure.
[0037] In some embodiments of the present invention, reference is made to... Figure 1 and Figure 2 As shown, it also includes: The guide device 500 has two sets and is installed on the sliding frame 200. The two sets of guide devices 500 are arranged symmetrically, and a fixed pressing device 600 and a dynamic pressing device 700 are provided on the outside of the guide device 500. The guide device 500 is a structure for driving the dynamic pressing device 700 to move synchronously with the laser cutting machine 300. The constant pressure clamping device 600 is provided with two sets, upper and lower, which are respectively clamped on the upper and lower sides of the laminate. The constant pressure clamping device 600 is used to apply a certain pre-tightening force to the laminate during the laser cutting process to prevent the laminate from deforming or displacing due to the laser thermal effect, which would affect the cutting accuracy. The dynamic pressing device 700 has multiple sets and is installed on the guide device 500 to move with the laser cutting machine 300. It can accurately follow the movement trajectory of the laser cutting machine 300 to achieve precise pressing of the workpiece cutting area, thereby ensuring the quality and dimensional accuracy of the cutting edge.
[0038] The dynamic pressing device 700 moves with the laser cutting machine 300 to dynamically press the laminate near the cutting path, effectively reducing the stress of the laser cutting machine 300 during the cutting process and reducing the probability of delamination of the laminate during the cutting process. At the same time, after moving to the designated position, it can stay in the corresponding position, so that the dynamic pressing device 700 can effectively prevent the delaminated laminate from continuing to delaminate.
[0039] The working principle of this embodiment is as follows: First, start the constant pressing device 600 and the dynamic pressing device 700, so that the upper and lower sets of constant and dynamic pressing devices 600 and 700 are applied to the upper and lower sides of the laminate. Start the drive motor, so that the drive motor drives the guide device 500, so that the guide device 500 drives the dynamic pressing device 700 to move synchronously with the laser cutting machine 300, so that it stops at the corresponding position after moving to the designated position, and then drives the next dynamic pressing device 700 to move.
[0040] In order to sequentially drive multiple dynamic pressing devices 700, in some embodiments of the present invention, referring to... Figure 6 As shown, the guiding device 500 includes: Multiple rack plates 510 are provided and fixedly installed on the sliding frame 200; Two second guide rods 520 are provided and installed on the sliding frame 200 and pass through multiple frame plates 510. They are used to guide the dynamic pressing device 700 to move smoothly along a predetermined path, ensuring the accuracy and stability of the movement of the dynamic pressing device 700. Multiple electromagnetic clutches 530 are provided and are bolted to the frame plate 510. The electromagnetic clutch 530 is a mechanical device that controls the clutch state through electromagnetic force. When energized, it generates electromagnetic attraction to engage the clutch. When de-energized, the electromagnetic attraction disappears and the clutch disengages, thereby realizing the transmission and disconnection of drive. Multiple drive rods 540 are provided, and each pair of adjacent drive rods 540 is connected by an electromagnetic clutch 530. The engagement and disengagement of the electromagnetic clutches 530 can achieve flexible control of the power transmission between different drive rods 540. By controlling the de-energization of the corresponding electromagnetic clutch 530, the power connection between it and the front and rear drive rods 540 can be disconnected. (For example, when the first drive rod 540 starts, if the electromagnetic clutch 530 connected to it is energized, it will drive the second drive rod 540 to rotate synchronously. When the electromagnetic clutch 530 is de-energized, the first drive rod 540 rotates independently. When the second drive rod 540 rotates, the first drive rod 540 will also rotate. When the third drive rod 540 rotates, the first drive rod 540 and the second drive rod 540 will also rotate synchronously.) This meets the movement requirements of the equipment under different working conditions. The two sets of drive rods 540 located on the upper and lower parts of the laminate are connected by a belt pulley drive.
[0041] In order to press and fix the laminate, in some embodiments of the present invention, reference is made to... Figure 6 As shown, both the constant pressing device 600 and the dynamic pressing device 700 include: The sliding block 710 is sleeved on the outside of the second guide rod 520 and the drive rod 540. The second guide rod 520 and the drive rod 540 are horizontally arranged. The sliding block 710 slides smoothly along the axial direction of the second guide rod 520 under the drive of the drive rod 540, thereby driving the entire sliding block 710 and the components mounted on it to reciprocate. The telescopic rod 720 is fixedly installed on the side of the sliding block 710 near the laminate. The telescopic rod 720 can further adjust the position and stroke of the pressing component 730 to adapt to the pressing requirements of laminates of different thicknesses or specifications. The pressing component 730 is fixedly installed on the telescopic rod 720 and is used to press the laminate. The contact part between the pressing component 730 and the laminate can be set as a plane, or a rotating roller can be installed to reduce friction.
[0042] In order to achieve normal movement of the dynamic pressing device 700, in some embodiments of the present invention, reference is made to... Figure 7 and Figure 8 As shown, the dynamic pressing device 700 also includes: A polygonal sleeve 740 is slidably mounted inside the sliding block 710 and sleeved on the outside of the drive rod 540; There are two second compression springs 750, which are installed on both sides of the polygonal sleeve 740 to provide a reset spring force for the polygonal sleeve 740, ensuring that it can automatically return to the initial position after being subjected to external force, thereby ensuring the stability and repeatability of the pressing action. At the same time, a limiting ring plate 751 for blocking the second compression spring 750 is installed on the sliding block 710, and the limiting ring plate 751 is fixed inside the sliding block 710. The guide slide 760 is located on the outside of the drive rod 540. The sliding head 770 is slidably installed inside the guide slide 760 and fixed inside the polygonal sleeve 740. The guide slide 760 is used to drive the sliding head 770 to move horizontally when the drive rod 540 rotates. By limiting and guiding the sliding head 770 through the guide slide 760, the linear motion trajectory of the polygonal sleeve 740 during the sliding process can be effectively guaranteed, the offset during the movement process can be reduced, and the pressing accuracy and stability can be improved.
[0043] The working principle of this embodiment is as follows: When the drive rod 540 rotates, it drives the guide slide 760 to rotate synchronously, causing the guide slide 760 to push the sliding head 770 through the inner wall. The sliding head 770 drives the sliding block 710 to slide, and stops moving after the sliding block 710 moves to the designated position. The polygonal sleeve 740 continues to move a certain distance under the drive of the sliding head 770, and compresses the second compression spring 750, so that the second compression spring 750 applies a thrust to the polygonal sleeve 740.
[0044] During reset, the drive rod 540 rotates in the opposite direction, and the polygonal sleeve 740 slides along the guide slide 760 again under the push of the second compression spring 750, so that the sliding block 710 slides and resets.
[0045] In order to stop the movement of the sliding block 710, in some embodiments of the present invention, reference is made to... Figure 9 As shown, the guide slide 760 consists of a spiral part 761 and two circular parts 762, with the two circular parts 762 respectively connected to the two ends of the spiral part 761.
[0046] Among them, the spiral part 761 serves as an intermediate transition section, and its structure is spiral-shaped, enabling the drive rod 540 to drive the sliding block 710 to slide normally during rotation. At the same time, the sliding speed of the sliding block 710 is proportional to the screw speed of the spiral part 761 and the rotation speed of the drive rod 540. When the sliding head 770 slides to the circular part 762, it slides inside the circular part 762, causing the sliding block 710 to stop sliding.
[0047] When the drive rod 540 rotates in the opposite direction, when the slider 770 is located in the circular part 762, the polygonal sleeve 740 is always subjected to the squeezing force of the second compression spring 750. When the slider 770 corresponds to the spiral part 761, the second compression spring 750 will push the slider 770 into the interior of the spiral part 761.
[0048] The working method of this invention: First, the electrical laminate to be cut is placed on the conveyor 100 and pushed along the conveyor 100 to the cutting position; then the fixed pressing device 600 and the dynamic pressing device 700 are started. When started, the telescopic rod 720 drives the pressing component 730 to move toward the electrical laminate, so that the upper and lower pressing components 730 press and position the electrical laminate.
[0049] Start the drive motor on the sliding frame 200, which drives the lead screw used to move the laser cutting machine 300 to rotate. The lead screw moves the laser cutting machine 300. At the same time, the lead screw drives the threaded rod 458 and the drive rod 540 to rotate through the pulley, so that the laser cutting machine 300, the exhaust housing 410 and the dynamic pressing device 700 move synchronously. When the laser cutting machine 300 moves, it cuts the laminate in the width direction.
[0050] During the cutting process, when the threaded rod 458 rotates, it drives the threaded block 457 to move, causing the threaded block 457 to move synchronously with the laser cutting machine 300. The air inlet pipe 430 on the exhaust housing 410 is connected to the hot air device. The hot air generated by the hot air device is discharged through the exhaust housing 410 and the air outlet pipe 420 to preheat the laminate to be cut. At the same time, when the hot air flows rapidly inside the exhaust housing 410, it forms a negative pressure to extract the air, so that the residual heat at the cut position of the laminate is extracted by the negative pressure and enters the interior of the exhaust housing 410 through the exhaust port 440 and flows to the air outlet pipe 420 to preheat the laminate.
[0051] The pressure plate 4511 in the downward pressure structure 451 constantly compresses the laminate and moves synchronously with the laser cutting machine 300. When the laminate delaminates at or near the cutting point of the laser cutting machine 300, the downward pressure structure 451 moves into the interior of the exhaust housing 410 under the pressure of the laminate, and increases the compression of the first compression spring 4514. This causes the lifting plate 4513 in the downward pressure structure 451 to drive the rocker structure 452 to rotate, and the rocker structure 452 to drive the wind baffle 453 to slide along the slide rail 454 to increase the overlap with the air inlet duct 430. The size increases the airflow speed inside the exhaust housing 410, accelerates the airflow rate near the laminate cutting position, thereby rapidly reducing the temperature at the cutting position, increasing the heat dissipation speed of the laminate, reducing the temperature difference between the inside and outside of the laminate, ending the lamination of the laminate earlier, and when the pressing structure 451 is misaligned with the lamination position, the first compression spring 4514 pushes the pressing structure 451 to reset and squeeze the laminate, and when the pressing structure 451 resets, it drives the wind baffle 453 to reset, so that the heat dissipation of the laminate returns to the initial state, avoiding the laminate being hot inside and cold outside.
[0052] When the foremost drive rod 540 rotates, it drives the sliding block 710 to slide by the helical part 761 and the sliding head 770, so that the entire dynamic pressing device 700 moves with the laser cutting machine 300. When the sliding block 710 contacts the frame plate 510, the sliding head 770 stops moving. The polygonal sleeve 740 continues to move a certain distance under the drive of the sliding head 770 and squeezes the second compression spring 750, so that the second compression spring 750 applies a thrust to the polygonal sleeve 740. When the laser cutting machine 300 corresponds to the next dynamic pressing device 700, the corresponding electromagnetic clutch 530 is activated, so that the foremost drive rod 540 drives the next drive rod 540 to rotate synchronously, so that the laser cutting machine 300 and the dynamic pressing device 700 move synchronously.
[0053] When the cutting is completed and the device is reset, the motor drives the drive rod 540 to rotate in the opposite direction. When the sliding head 770 is in the circular part 762, the polygonal sleeve 740 is always subjected to the squeezing force of the second compression spring 750. When the sliding head 770 corresponds to the spiral part 761, the second compression spring 750 will push the sliding head 770 into the interior of the spiral part 761 and move to the initial position under the drive of the spiral part 761.
[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 die-cutting device for electrical laminated products, characterized in that, include: Conveyor; A sliding frame, which is mounted on top of the conveyor; A laser cutting machine, which is mounted on a sliding frame and slides along the length of the sliding frame; The preheating and cooling device consists of two sets, upper and lower, arranged symmetrically around the laminate as the axis. It is used to extract the residual heat after the laminate is cut and cool it down, and to preheat the laminate before the cut by relying on the residual heat.
2. The die-cutting device for electrical laminated products according to claim 1, characterized in that: The preheating and cooling device includes: The exhaust housing is slidably mounted on the sliding frame and slides synchronously with the laser cutting machine. Along the cutting direction of the laminate, the exhaust housing has an exhaust duct and an inlet duct installed at the front and rear ends, respectively. There are multiple exhaust vents, which are located on the side of the exhaust housing near the laminate. When the airflow passes through the exhaust housing quickly, it creates a negative pressure and uses the exhaust vents to extract heat from the laminate.
3. The die-cutting device for electrical laminated products according to claim 2, characterized in that: The preheating and cooling device also includes an airflow adjustment device consisting of a pressure-down structure, a rocker structure, and a baffle plate. The pressure structure is installed inside the exhaust housing and extends to the outside of the exhaust housing, and a first compression spring is installed between the pressure structure and the inner wall of the exhaust housing. A baffle plate is installed at the connection between the air outlet duct and the exhaust housing. The rocker structure is installed inside the exhaust housing and, when the downward pressure structure slides, it drives the baffle plate to adjust the overlap size with the exhaust duct.
4. The die-cutting device for electrical laminated products according to claim 3, characterized in that: The exhaust housing has a slide rail fixedly installed on the inner wall of the rear end for the sliding of the baffle plate, and the outer side of the baffle plate is wrapped with sealing rubber.
5. The die-cutting device for electrical laminated products according to claim 2, characterized in that: A threaded block is fixedly installed on the side of the exhaust housing away from the laminate. A threaded rod and a first guide rod are inserted inside the threaded block. The threaded rod and the first guide rod are installed on the sliding frame.
6. The die-cutting device for electrical laminated products according to claim 1, characterized in that: Also includes: The guide device consists of two sets, which are mounted on the sliding frame; The constant pressure bonding device is provided in two sets, which are respectively clamped on both sides of the laminate; The dynamic pressing device has multiple sets and is installed on the guiding device to move with the laser cutting machine.
7. The die-cutting device for electrical laminated products according to claim 6, characterized in that: The guiding device includes: The frame has multiple panels, which are installed on the sliding frame; The second guide rod, which has two parts, is installed on the sliding frame and passes through multiple frame plates; Multiple electromagnetic clutches are provided and mounted on the frame plate; There are multiple drive rods, and each pair of adjacent drive rods is connected by an electromagnetic clutch.
8. The die-cutting device for electrical laminated products according to claim 6, characterized in that: Both the constant pressing device and the dynamic pressing device include: A sliding block, which is installed on the outside of the guiding device; The telescopic rod is mounted on the sliding block; A pressing component, which is mounted on a telescopic rod and used to press laminates.
9. The die-cutting device for electrical laminated products according to claim 8, characterized in that: The dynamic pressing device also includes: A polygonal sleeve is slidably mounted inside the sliding block and fitted onto the outside of the drive rod; There are two second compression springs, which are installed on both sides of the polygonal sleeve. A limiting ring plate for blocking the second compression spring is installed on the sliding block, and the limiting ring plate is fixed inside the sliding block. The guide slide is located on the outside of the drive rod, and a sliding head fixed in a polygonal sleeve is slidably installed inside the guide slide.
10. The die-cutting device for electrical laminated products according to claim 10, characterized in that: The guide slide consists of a spiral section and two circular sections, with the two circular sections connected to the two ends of the spiral section respectively.