Heat dissipation structure for spray head control panel

Abstract

The utility model relates to the technical field of heat dissipation structures, and particularly discloses a heat dissipation structure for a spray head control panel, which comprises a mainboard, a fixed block fixed at the bottom end of the mainboard, a heat conduction plate arranged below the fixed block, a ventilation pipe fixed at the bottom end of the heat conduction plate, a fixed platform fixed below the ventilation pipe, and an equipment groove formed in the top end of the fixed platform. An adjusting mechanism is arranged at the bottom end of the equipment groove. The utility model has the advantages of flexible adjustment, reliable clamping, high heat dissipation efficiency and the like. And by arranging an adjusting mechanism composed of an elastic piece, a ball, a rotating rod and a baffle, quick clamping and releasing of nozzle control plates of different sizes can be achieved, operation is easy and convenient, and adaptability is high. Meanwhile, the heat conduction plate, the fixing block and the cooling fins form an efficient heat conduction path, a good air duct system is formed by combining the ventilation pipe and the ventilation holes, the overall heat dissipation performance is remarkably improved, equipment faults caused by high temperature are effectively prevented, the operation stability of the spray head control panel is improved, and the service life of the spray head control panel is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation structure technology, specifically a heat dissipation structure for a nozzle control board. Background Technology

[0002] Printhead control boards are widely used in precision electronic devices such as industrial printers, 3D printers, and laser engraving machines to control the operating status and parameters of the printhead. During prolonged high-load operation, the electronic components inside the printhead control board generate a significant amount of heat. If this heat cannot be dissipated effectively and promptly, the control board's temperature will rise, affecting its stability and lifespan, and potentially leading to system malfunctions or equipment damage. Therefore, designing an installation structure with excellent heat dissipation performance is crucial for ensuring the normal operation of the printhead control board.

[0003] However, in the prior art, the heat of power components (such as driver chips and MOSFETs) on the nozzle control board needs to be conducted to the outer casing through a multi-layer PCB board. However, the PCB board material (FR-4) has low thermal conductivity (about 0.2W / m·K), which leads to excessively high local hot spot temperatures. Therefore, a heat dissipation structure for nozzle control board is provided. Utility Model Content

[0004] The purpose of this invention is to provide a heat dissipation structure for a nozzle control board, in order to solve the problem in the above-mentioned background art where the heat of power components (such as driver chips and MOSFETs) on the nozzle control board needs to be conducted to the outer casing through a multi-layer PCB board, and the PCB board material (FR-4) has low thermal conductivity (about 0.2W / m·K), resulting in excessively high local hot spot temperatures.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat dissipation structure for a nozzle control board, including a main board, a fixing block fixed at the bottom of the main board, a heat-conducting plate arranged below the fixing block, a ventilation pipe fixed at the bottom of the heat-conducting plate, a fixing platform fixed below the ventilation pipe, an equipment slot opened at the top of the fixing platform, and an adjustment mechanism arranged at the bottom of the equipment slot.

[0006] The adjustment mechanism includes a spring plate, one side of which is fixed to the inner wall at the top of the equipment slot. A ball bearing is movably mounted on the top of the spring plate via a shaft, and a rotating rod is fixed to the bottom of the fixed platform.

[0007] The bottom of the rotating rod is fixed with a rotary knob, the outer side of the rotating rod is fixed with a limit block, the top of the rotating rod passes through the fixed platform and is rotatably set inside the equipment slot via a bearing, and a baffle is fixed on the outer side of the rotating rod.

[0008] The bottom end of the rotating rod is fixed with a turntable, and several locking blocks are fixed on the outside of the turntable. The surface of the locking blocks is in contact with the top of the ball.

[0009] The bottom of the fixing block is fixed with several heat sinks, and the two sides of the fixing block are fixed with connecting blocks. The top of the connecting block is opened with a first threaded hole, and the top four corners of the heat conduction plate are opened with a second threaded hole.

[0010] The fixed platform has four fixing holes at the top corners and ventilation holes at the bottom. The first threaded hole has a bolt inside, and the bottom of the bolt passes through the second threaded hole and the fixing hole and extends to the bottom of the fixing hole.

[0011] This utility model has at least the following beneficial effects:

[0012] This utility model provides a heat dissipation structure for a nozzle control board, which has the advantages of flexible adjustment, strong adaptability, and high heat dissipation efficiency. The structure achieves rapid clamping and release of the nozzle control board through an adjustment mechanism located at the bottom of the equipment slot. The adjustment mechanism includes components such as springs, balls, rotating rods, baffles, turntables, and locking blocks, forming a linked adjustment system. Users can drive the baffle to move by rotating a knob, adapting to nozzle control boards of different sizes and shapes. The clamping force is evenly distributed, and the operation is simple and easy to replace. Simultaneously, the design of the limiting block effectively prevents excessive rotation of the baffle, ensuring structural stability. In terms of heat dissipation, heat is conducted sequentially through the nozzle control board → equipment slot → heat-conducting plate → fixing block → heat sink, and forms a complete airflow system with ventilation pipes and ventilation holes, achieving efficient natural convection or forced air cooling, significantly improving overall heat dissipation performance. The continuous heat conduction path and reasonable ventilation design effectively avoid performance degradation or component aging problems caused by high temperatures in the nozzle control board. With its compact structure and easy installation, it is particularly suitable for applications such as industrial printers and 3D printing equipment that have high requirements for heat dissipation of the nozzle control board, and has good practicality and promotion value. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 is a schematic diagram of the bottom structure of the fixed platform of this utility model;

[0015] Figure 3 is a schematic diagram of the overall internal structure of this utility model;

[0016] Figure 4 is a schematic diagram of the adjustment mechanism of this utility model;

[0017] Figure 5 is an enlarged schematic diagram of the structure at point A of this utility model.

[0018] In the diagram: 1. Main board; 2. Fixing block; 3. Heat-conducting plate; 4. Ventilation pipe; 5. Fixing platform; 6. Equipment slot; 7. Adjustment mechanism; 701. Spring; 702. Ball bearing; 703. Rotating rod; 704. Rotary knob; 705. Limiting block; 706. Baffle; 707. Turntable; 708. Locking block; 8. Heat sink; 9. Connecting block; 10. First threaded hole; 11. Second threaded hole; 12. Fixing hole; 13. Ventilation hole; 14. Bolt. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please refer to Figures 1-5. This utility model provides a technical solution: a heat dissipation structure for a nozzle control board, including a main board 1. The main board 1 serves as the basic support platform for the overall structure, used for installing and fixing subsequent functional components. A fixing block 2 is fixed at the bottom center of the main board 1. This fixing block 2 is preferably made of a metal material with good thermal conductivity to achieve effective heat conduction. A heat-conducting plate 3 is provided below the fixing block 2, and the heat-conducting plate 3 is in close contact with the fixing block 2.

[0021] The heatsink 3 is fixedly connected by screws or adhesive. The heatsink 3 is preferably made of a high thermal conductivity material, such as pure copper or aluminum alloy, to improve heat transfer efficiency. A ventilation pipe 4 is fixedly connected to the bottom of the heatsink 3. The ventilation pipe 4 can be made of metal or high-temperature resistant plastic, and its interior forms an airflow channel to help quickly dissipate the heat absorbed by the heatsink 3. Eight power transistors on each side of the mainboard 1 are fixed to the heatsink 8, and the four DACs at the bottom are tightly attached to the heatsink 8 via thermal paste. Their main function is to quickly dissipate the large amount of heat generated by the power transistors and DACs to prevent overheating damage, and also to fix the control board in place.

[0022] Thermal grease (also known as thermal conductive silicone pad or thermal conductive silicone pad) is a mature existing technology in the market. It is a flexible thermally conductive interface material made of organosilicon material as the base material and adding thermally conductive fillers such as ceramic powder and metal oxides. It is mainly used to fill the tiny gaps between heat-generating components (such as chips and power devices) and heat sinks in electronic devices, solving the problem of insufficient heat conduction efficiency caused by air (which has low thermal conductivity, only 0.026 W / m·K), thereby improving the overall heat dissipation performance.

[0023] The lower end of the ventilation duct 4 is fixedly connected to the top central area of ​​the fixed platform 5. The fixed platform 5 serves as the supporting foundation for the entire device, possessing good structural strength and stability. An equipment slot 6 is provided at its top to accommodate and position electronic components requiring heat dissipation, such as the nozzle control board. An adjustment mechanism 7 is provided at the bottom of the equipment slot 6 to clamp and fix the nozzle control board, and can be flexibly adjusted according to different sizes. The adjustment mechanism 7 includes a spring 701, one side of which is connected to the inner wall of the top of the equipment slot 6 by welding or bolting. A ball bearing 702 is movably mounted on the top of the spring bearing 701 via a shaft. This ball bearing 702 can rotate freely on the shaft, reducing friction and improving smoothness during adjustment.

[0024] A rotating rod 703 is fixedly connected to the bottom end of the fixed platform 5. The rotating rod 703 extends vertically downwards, and a rotary knob 704 is fixedly connected to its bottom end for easy manual operation by the user. A limit block 705 is fixed to the outside of the rotating rod 703 to limit the maximum rotation angle of the baffle 706, preventing excessive adjustment that could cause structural damage or excessive pressure on the equipment. The top end of the rotating rod 703 passes through the fixed platform 5 and is rotatably connected to the inside of the equipment slot 6 via a bearing, allowing the rotating rod 703 to smoothly drive the baffle 706 to rotate. The baffle 706 is fixedly sleeved on the rotating rod 703 and rotates synchronously with the rotation of the rotating rod, thereby clamping or releasing the nozzle control plate.

[0025] A turntable 707 is fixedly connected to the bottom of the rotating rod 703. Several locking blocks 708 are evenly distributed on the outer circumferential surface of the turntable 707. The surfaces of these locking blocks 708 maintain a movable contact with the top of the ball bearing 702. When the user rotates the rotary knob 704, the turntable 707 rotates accordingly, the locking blocks 708 push the ball bearing 702 to move, which in turn causes the spring sheet 701 to undergo elastic deformation, ultimately causing the baffle 706 to move towards the nozzle control plate, achieving clamping and fixation. Several heat sinks 8 are fixed to the bottom of the fixing block 2. These heat sinks 8 are evenly arranged along the bottom of the fixing block 2, increasing the surface area in contact with air and effectively improving the overall heat dissipation capacity. The heat sinks 8 are preferably made of aluminum, which has good thermal conductivity and lightweight characteristics.

[0026] Connecting blocks 9 are fixed on the left and right sides of the fixing block 2 respectively, and a first thread hole 10 is opened at the top of each connecting block 9.

[0027] Correspondingly, second threaded holes 11 are also provided at the four corners of the top of the heat-conducting plate 3. Fixing holes 12 are also provided at the four corners of the top of the fixing platform 5. The first threaded holes 10, the second threaded holes 11 and the fixing holes 12 are connected by bolts 14 in sequence and tightened, thereby firmly connecting the main board 1, the fixing block 2, the heat-conducting plate 3, the ventilation pipe 4 and the fixing platform 5 into a whole, ensuring the overall structure is stable and reliable. In addition, multiple ventilation holes 13 are provided at the bottom of the fixing platform 5. These ventilation holes 13 are connected to the ventilation pipe 4 to form a complete air duct system, which is conducive to the rapid exhaust of hot air and improves the overall heat dissipation efficiency.

[0028] In use, the user first places the nozzle control board to be cooled, such as the control motherboard in an industrial printer or 3D printing equipment, into the device slot 6. The device slot 6 is designed according to the standard size of the motherboard 1, providing a certain degree of accommodatingness to fit different models of control boards. At this time, one side of the nozzle control board contacts the baffle 706, while the other side is limited by the inner wall of the device slot 6, ensuring it is in the center of the heat conduction path. Then, the user manually rotates the rotary knob 704 located at the bottom of the fixed platform 5, causing the rotating rod 703 to rotate synchronously. Since the turntable 707 is fixedly connected to the bottom end of the rotating rod 703, it rotates along with the rotary knob 704. Several locking blocks 708 are provided on the outer periphery of the turntable 707, and these blocks 708 rotate with the turntable and sequentially contact the tops of the ball bearings 702.

[0029] The ball bearing 702 is mounted on the top of the spring clip 701 and is rolled together via a shaft. When the locking block 708 pushes the ball bearing 702, the ball bearing slides along the direction of the spring clip 701 and compresses the spring clip 701, causing elastic deformation. The deformation of the spring clip 701 causes the baffle 706 connected to its end to move towards the nozzle control plate, thereby clamping and fixing the nozzle control plate. During this process, the design of the ball bearing 702 effectively reduces the frictional resistance between the locking block 708 and the spring clip assembly, making the adjustment process smoother. At the same time, the point contact between the ball bearing 702 and the locking block 708 improves the sensitivity and response speed of the adjustment. The spring clip 701 provides good reset capability, and when the user rotates the rotary knob 704 in the opposite direction, it can quickly return to its original state, releasing the clamping force on the nozzle control plate, facilitating quick replacement or adjustment of the control plate position.

[0030] Furthermore, the angle of the baffle 706 changes with the rotation of the rotating rod 703, and can be adaptively adjusted according to the external dimensions of different nozzle control boards to ensure uniform distribution of clamping force and avoid damage to the control board due to excessive local force. The limiting block 705 is located in the middle of the rotating rod 703 to limit the maximum rotation angle of the baffle 706, preventing excessive deflection of the baffle 706 that could lead to structural instability or damage to the control board. The entire device is locked by bolts 14 through the first threaded hole 10, the second threaded hole 11, and the fixing hole 12, which firmly connects the main board 1, the fixing block 2, the heat-conducting plate 3, the ventilation pipe 4, and the fixing platform 5 into one unit, ensuring that it will not loosen or misalign due to vibration or external force during operation. The heat generated by the nozzle control board during operation is efficiently conducted and dissipated through the following heat conduction path: nozzle control board → inside the equipment tank 6 → heat-conducting plate 3 → fixing block 2 → heat sink 8 → surrounding air environment.

[0031] The heat-conducting plate 3 is made of a material with high thermal conductivity, which can quickly transfer heat from the nozzle control plate to the fixed block 2 below. The bottom of the fixed block 2 is equipped with multiple heat sinks 8, which significantly increases the contact area with air and improves heat exchange efficiency. At the same time, the ventilation pipe 4 guides the airflow from top to bottom and discharges it through the ventilation holes 13 at the bottom of the fixed platform 5.

[0032] The formation of natural convection channels helps to accelerate heat dissipation.

[0033] This utility model provides a heat dissipation structure for a nozzle control board, which achieves flexible clamping and release of the nozzle control board through an adjustment mechanism located at the bottom of the equipment slot. The adjustment mechanism 7 includes a spring 701, a ball bearing 702, and a rotating rod 703.

[0034] The baffle 706, turntable 707, and locking block 708 constitute a linkage adjustment system. Users can clamp or release the nozzle control board by rotating the rotary knob 704 located at the bottom of the fixed platform, without the need for additional tools, making operation simple and quick. When the turntable 707 rotates with the rotating rod 703, the locking block 708 on its outer side pushes the ball bearing 702 to move, thereby compressing the spring 701 to produce elastic deformation, driving the baffle 706 towards the nozzle control board, achieving automatic clamping. The ball bearing design effectively reduces the friction between the locking block 706 and the spring 701, improving the smoothness and response speed of the adjustment process. Simultaneously, the spring 701 has good reset performance, quickly returning to its original state when the rotary knob 704 rotates in the opposite direction, releasing the clamping force and facilitating quick replacement of the nozzle control board. Furthermore, the angle of the baffle 706 can be adaptively adjusted according to the different sizes and shapes of the nozzle control boards, ensuring uniform distribution of clamping force and preventing damage to the control board due to excessive local force. The limit block 705 further ensures that the maximum rotation angle of the baffle 706 does not exceed the safe range, preventing structural instability or equipment damage. This mechanically linked adjustment structure not only improves the flexibility and adaptability of the device, but also greatly enhances the user's operating experience and maintenance efficiency, making it particularly suitable for industrial printing equipment and 3D printing equipment that require frequent replacement or adjustment of nozzle control boards.

[0035] This invention significantly improves the heat dissipation efficiency of the nozzle control board during operation through a scientifically designed and optimized heat conduction path and ventilation structure. Heat is conducted from the nozzle control board to the heat-conducting plate 3 via the equipment slot 6, then sequentially to the fixing block 2 and the heat sink 8, and finally dissipated into the environment through air convection. The heat-conducting plate 3 is made of a high thermal conductivity material (such as copper or aluminum alloy), which can quickly absorb and diffuse heat. The fixing block 2 acts as an intermediate heat conduction bridge, with multiple aluminum heat sinks 8 at its bottom, greatly increasing the contact area with air and improving heat exchange efficiency. A ventilation duct 4 connects to the bottom of the heat-conducting plate 3, guiding hot air to flow from top to bottom, forming a smooth airflow channel, and exhausting the air through ventilation holes 13 at the bottom of the fixing platform 5, thus constructing a complete airflow system. Natural convection or the use of an external fan can further enhance airflow speed and accelerate heat dissipation, thereby effectively reducing the operating temperature of the nozzle control board and preventing performance degradation or component aging caused by overheating. Furthermore, the main board, fixing block 2, heat-conducting plate 3, ventilation duct 4, and fixing platform 5 are securely connected by bolts, ensuring structural stability and improving the continuity of heat conduction between components. This heat dissipation structure is suitable not only for conventional working environments but can also be expanded into a forced air cooling system by adding fans to meet the application requirements of high-temperature or long-term high-load operation. In summary, this structure possesses excellent thermal conductivity and ventilation design, effectively solving the heat dissipation problem of the nozzle control board during operation, and improving equipment stability and service life.

[0036] It should be noted that in this paper, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any relationship between these entities or operations.

[0037] What is this actual relationship or order? Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation structure for a nozzle control board, characterized in that: The device includes a motherboard, a fixing block fixed to the bottom of the motherboard, a heat-conducting plate below the fixing block, a ventilation pipe fixed to the bottom of the heat-conducting plate, a fixing platform fixed below the ventilation pipe, a device slot at the top of the fixing platform, and an adjustment mechanism at the bottom of the device slot.

2. The heat dissipation structure for the nozzle control board according to claim 1, characterized in that: The adjustment mechanism includes a spring plate, one side of which is fixed to the inner wall of the top of the equipment slot, and a ball bearing is movably mounted on the top of the spring plate via a shaft. A rotating rod is fixed to the bottom of the fixed platform.

3. The heat dissipation structure for the nozzle control board according to claim 2, characterized in that: A rotary knob is fixed at the bottom of the rotating rod, a limit block is fixed on the outside of the rotating rod, the top of the rotating rod passes through the fixed platform and is rotatably mounted inside the equipment slot via a bearing, and a baffle is fixed on the outside of the rotating rod.

4. The heat dissipation structure for the nozzle control board according to claim 3, characterized in that: A turntable is fixed to the bottom end of the rotating rod, and several locking blocks are fixed to the outer side of the turntable. The surface of the locking blocks is movably attached to the top of the ball bearing.

5. The heat dissipation structure for the nozzle control board according to claim 4, characterized in that: The bottom of the fixing block is fixed with several heat sinks, and connecting blocks are fixed on both sides of the fixing block. The top of the connecting block is opened with a first threaded hole, and the top four corners of the heat-conducting plate are all opened with second threaded holes.

6. The heat dissipation structure for the nozzle control board according to claim 5, characterized in that: The fixed platform has four fixing holes at its top corners and ventilation holes at its bottom. The first threaded hole has a bolt inside, and the bottom end of the bolt passes through the second threaded hole and the fixing hole and extends to the bottom of the fixing hole.

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