Hot melting machine for printed circuit board

Abstract

The utility model is suitable for the technical field of circuit board processing, and provides a fuse machine for a printed circuit board, which comprises a water tank for storing cooling water, the mounting frame is fixed at the top of the water tank, and an air cylinder used for adjusting the pressing force is arranged on the mounting frame; the spring is fixed on an output rod of the air cylinder through a mounting plate and is used for buffering pressure; the heating plate is fixed at the bottom of the spring and used for hot melting of the rubber sheet, and a heat insulation sleeve used for heat insulation is fixedly arranged outside the heating plate in a sleeving mode; and the cooling assembly is arranged on the water tank and is used for rapidly cooling the circuit board. According to the hot melting machine for the printed circuit board provided by the scheme, the circuit board can be cooled while being quickly shaped after being heated and pressed, so that the processing efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board processing technology, and in particular relates to a hot melt machine for printed circuit boards. Background Technology

[0002] Printed circuit boards (PCBs) are important components in electronic devices. During PCB production, multiple layers of different raw materials need to be pressed together. Before pressing, the PCBs need to be heat-fused, which is usually done using a heat-fusion machine. A heat-fusion machine is an instrument that uses a heating plate to transfer heat to the welding surfaces of the upper and lower plastic heating elements, causing their surfaces to melt. Then, the heating plate is quickly withdrawn, allowing the molten surfaces of the two heating elements to fuse, solidify, and become one. The whole machine is in the form of a frame and consists of three main plates: an upper template, a lower template, and a heating template. It is also equipped with a heating mold and upper and lower plastic cooling molds. The operation is pneumatically controlled and manually operated.

[0003] Existing hot melt machines only have heating and pressurizing functions, which makes it inconvenient to cool down the hot-pressed circuit boards in a timely manner to ensure their strength. Natural cooling of the circuit boards is also time-consuming. Utility Model Content

[0004] This utility model provides a hot melt machine for printed circuit boards, aiming to solve the problem mentioned in the background art that the existing hot melt machines only have heating and pressurizing functions, and it is inconvenient to cool down the hot-pressed circuit board in time to ensure the strength of the circuit board.

[0005] To solve the above problems, this utility model is implemented as follows: a hot melt machine for printed circuit boards includes: a water tank for storing cooling water; a mounting bracket fixed to the top of the water tank, the mounting bracket being provided with a cylinder for adjusting the pressing force; a spring fixed to the cylinder output rod by a mounting plate for buffering pressure; a heating plate fixed to the bottom of the spring for hot melt adhesive sheets, the heating plate being fixedly covered with a heat insulation sleeve for heat insulation; and a cooling assembly disposed on the water tank for rapidly cooling the circuit board.

[0006] Preferably, the cooling component includes a metal plate, an outlet channel, a hot water pump, and an inlet pipe. The metal plate is fixed to the top of the water tank, the outlet channel is disposed inside the metal plate, the hot water pump is installed inside the water tank, the inlet pipe extends into the outlet channel, and a drain pipe extending outside the outlet channel is provided on the outlet channel.

[0007] Preferably, a connecting pipe and a drain pipe are installed on both sides of the water tank, and a guide hopper for guiding the ice blocks to be discharged is installed on the top of the connecting pipe. The drain pipe is used to provide a channel to discharge excess cooling water.

[0008] Preferably, the water tank is equipped with an alarm, the alarm is equipped with a temperature sensor, the detection probe of the temperature sensor extends into the water tank, and the water tank is equipped with an observation window for displaying the water level.

[0009] Preferably, a stirring rod is rotatably installed inside the water tank, and a motor is installed at the bottom of the water tank. The output shaft of the motor is fixedly connected to the stirring rod, and the stirring rod is used to mix ice cubes and cooling water.

[0010] Preferably, a limiting rod penetrating the spring is installed on the top of the heat insulation sleeve, an opening is provided on the mounting plate, the limiting rod extends through the opening to the top of the mounting plate, and a limiting block is fixed to the top of the limiting rod.

[0011] Preferably, the motor is fitted with a waterproof shell, and the stirring rod is provided with stirring blades, which are located at the discharge end of the connecting pipe.

[0012] Compared with related technologies, the hot melt machine for printed circuit boards provided by this utility model has the following advantages:

[0013] Compared with existing technologies, the hot melt machine for printed circuit boards provided in this solution ensures precise control of the pressing force through the combined use of cylinders and springs. The combination of heating plate and heat insulation sleeve achieves effective heating while preventing heat transfer from damaging the surrounding environment and components. The introduction of cooling components, including the coordinated work of metal plate, liquid outlet channel, hot water pump and liquid inlet pipe, enables rapid cooling of the circuit board. The design of the water tank and its supporting components, such as connecting pipe, drain pipe, alarm, observation window, stirring rod and motor, further improve the efficiency and stability of the cooling system. Overall, this utility model improves the safety, reliability and performance stability of the hot melt machine, ensuring that the circuit board achieves the best processing effect during the hot melt process. Attached Figure Description

[0014] Figure 1 This is a front view structural schematic diagram of a hot melt machine for printed circuit boards provided by this utility model;

[0015] Figure 2 This is a front sectional view of a hot melt machine for printed circuit boards provided by this utility model;

[0016] Figure 3 This is a schematic diagram of the assembly structure of the limiting rod of the buffer spring in this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the heating plate and the heat insulation sleeve in this utility model.

[0018] Reference numerals: 1. Water tank; 2. Mounting bracket; 3. Cylinder; 4. Mounting plate; 5. Spring; 6. Heating plate; 7. Heat insulation sleeve; 8. Metal plate; 9. Liquid outlet channel; 10. Hot water pump; 11. Liquid inlet pipe; 12. Connecting pipe; 13. Feed hopper; 14. Sewage pipe; 15. Alarm; 16. Observation window; 17. Stirring rod; 18. Motor; 19. Limiting rod. Detailed Implementation

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] This utility model embodiment provides a hot melt machine for printed circuit boards, such as... Figure 1-4 As shown, the hot melt machine for printed circuit boards includes: a water tank 1 for storing cooling water; a mounting bracket 2 fixed to the top of the water tank 1, on which a cylinder 3 for adjusting the pressing force is provided; a spring 5 for buffering pressure fixed to the output rod of the cylinder 3 by a mounting plate 4; a heating plate 6 for hot melt adhesive sheets fixed to the bottom of the spring 5, and a heat insulation sleeve 7 for heat insulation is fixedly sleeved on the outside of the heating plate 6; and a cooling assembly for rapidly cooling the circuit board disposed on the water tank 1.

[0022] In this embodiment, the water tank 1 is used to store cooling water, providing a water source for subsequent cooling components, ensuring a sufficient and stable water supply during the cooling process, and improving cooling efficiency. The mounting bracket 2 provides a stable platform, ensuring the overall structural stability and operational reliability of the hot melt machine. The cylinder 3 is used to adjust the pressing force, i.e., to control the pressure of the heating plate 6 on the circuit board. By precisely controlling the pressing force, it ensures that the circuit board is subjected to uniform and appropriate pressure during the hot melt process, improving the hot melt effect. The mounting plate 4 serves as a bridge connecting the cylinder 3 and the spring 5, ensuring that the spring 5 can be stably mounted on the output rod of the cylinder 3. The spring 5, through its buffering effect, protects the circuit board from excessive pressure damage, improving the safety and reliability of the hot melt machine. The heating plate 6, through its heating effect, achieves a firm bond between the circuit board and the film, improving the strength and stability of the circuit board. The heat insulation sleeve 7 is used for heat insulation, preventing heat from being transferred to the surrounding environment and components, effectively reducing energy loss, and protecting the surrounding environment and components from high-temperature damage.

[0023] In a further preferred embodiment of the present invention, the cooling component includes a metal plate 8, a liquid outlet channel 9, a hot water pump 10, and a liquid inlet pipe 11. The metal plate 8 is fixed to the top of the water tank 1, the liquid outlet channel 9 is disposed inside the metal plate 8, the hot water pump 10 is installed inside the water tank 1, the liquid inlet pipe 11 extends into the liquid outlet channel 9, and a drain pipe extending outside the liquid outlet channel 9 is provided on the liquid outlet channel 9.

[0024] In this embodiment, the metal plate 8, as part of the cooling component, directly contacts the circuit board to transfer the cooling effect. The metal plate 8 has good thermal conductivity, enabling it to quickly transfer the temperature of the cooling water in the water tank 1 to the circuit board, achieving rapid cooling. Simultaneously, the robustness of the metal plate 8 ensures its stability and durability during the cooling process. The liquid outlet channel 9 is located within the metal plate 8, providing a flow channel for the cooling water to cool the metal plate 8 in contact with the circuit board, thereby cooling the circuit board. The hot water pump 10 is installed inside the water tank 1 to drive the cooling water to circulate within the system. The cooling system operates by circulating the cooling water from tank 1 to outlet channel 9 and back to tank 1 for further cooling. The introduction of hot water pump 10 enables the recycling of cooling water, improving the efficiency of the cooling system. Furthermore, by adjusting hot water pump 10, precise control of cooling water flow rate and velocity can be achieved, further optimizing the cooling effect. The design of inlet pipe 11 ensures the smooth discharge and recycling of cooling water after the cooling process, avoiding water waste. Additionally, by adjusting inlet pipe 11 and outlet pipe, the circulation and discharge process of cooling water can be further controlled to achieve a more efficient cooling effect.

[0025] In a further preferred embodiment of the present invention, a connecting pipe 12 and a drain pipe 14 are respectively installed on both sides of the water tank 1. A guide hopper 13 for guiding the discharge of ice blocks is installed on the top of the connecting pipe 12, and the drain pipe 14 is used to provide a channel to discharge excess cooling water.

[0026] In this embodiment, cooling medium can be easily added to the water tank 1 through the connecting pipe 12, thereby further reducing the water temperature and improving the cooling effect. At the same time, the design of the connecting pipe 12 is also convenient for maintenance and cleaning. The design of the guide hopper 13 ensures that cooling medium such as ice can enter the water tank 1 accurately and quickly, avoiding the scattering and waste of ice during the addition process. At the same time, the guiding effect of the guide hopper 13 also improves the uniformity of ice distribution in the water tank 1, thereby further improving the cooling effect. The drain pipe 14 is used to discharge excess or deteriorated cooling water to maintain the cleanliness of the water in the water tank 1 and the cooling effect. The design of the drain pipe 14 allows the water quality in the water tank 1 to be managed and maintained in a timely and effective manner. By regularly discharging excess or deteriorated cooling water, it can be ensured that the water quality in the water tank 1 is always kept clean and within a suitable temperature range, thereby further improving the cooling effect and performance stability of the hot melt machine.

[0027] In a further preferred embodiment of the present invention, an alarm 15 is installed on the water tank 1, the alarm 15 is equipped with a temperature sensor, the detection probe of the temperature sensor extends into the water tank 1, and the water tank 1 is provided with an observation window 16 for displaying the water level.

[0028] In this embodiment, the alarm 15, through an integrated temperature sensor, can monitor the water temperature in the water tank 1 in real time. When the water temperature exceeds the preset safety range, the alarm 15 will immediately sound an alarm to remind the operator to take timely measures, such as adding ice or adjusting the working status of the hot water pump 10, to prevent the water temperature from being too high and damaging the hot water fusion machine or affecting the cooling effect. This design improves the safety and reliability of the hot water fusion machine. The temperature sensor can accurately and quickly measure the water temperature in the water tank 1 and transmit the data to the alarm 15. This design allows the operator to understand the water temperature in the water tank 1 in real time, so as to take necessary measures in time to keep the water temperature within a suitable range. The observation window 16 allows the operator to intuitively understand the water level in the water tank 1, so as to determine whether cooling water needs to be added or other maintenance operations need to be performed. This design improves the ease of use and maintainability of the hot water fusion machine, while also ensuring the stable operation of the cooling system.

[0029] In a further preferred embodiment of this utility model, a stirring rod 17 is rotatably installed inside the water tank 1, and a motor 18 is installed at the bottom of the water tank 1. The output shaft of the motor 18 is fixedly connected to the stirring rod 17, and the stirring rod 17 is used to mix ice cubes and cooling water.

[0030] In this embodiment, the rotation of the stirring rod 17 breaks the stratification between the ice and the cooling water, allowing them to mix thoroughly. This accelerates the melting of the ice and uniformly lowers the water temperature. This design improves the efficiency and effectiveness of the cooling system, ensuring that the hot melt machine can obtain a stable low-temperature cooling medium during operation. The motor 18 drives the rotation of the stirring rod 17, providing the necessary power source to enable the stirring rod 17 to rotate continuously and stably. By adjusting the speed and operating time of the motor 18, the mixing effect of the stirring rod 17 can be controlled, thereby further optimizing the performance and efficiency of the cooling system.

[0031] In a further preferred embodiment of the present invention, a limiting rod 19 that penetrates the spring 5 is installed on the top of the heat insulation sleeve 7, and an opening is provided on the mounting plate 4. The limiting rod 19 extends to the top of the mounting plate 4 through the opening, and a limiting block is fixed to the top of the limiting rod 19.

[0032] In this embodiment, the limiting rod 19 serves to fix and limit the position of components such as the heat insulation sleeve 7, spring 5, and mounting plate 4, ensuring their relative position stability and preventing displacement or loosening during operation. At the same time, the limiting rod 19 also limits the compression of spring 5 through the limiting block at its top, thereby ensuring that spring 5 provides sufficient elastic force. The elastic force of spring 5 allows heating plate 6 to fit tightly against the circuit board, reducing the gap in heat transfer.

[0033] In a further preferred embodiment of the present invention, the motor 18 is externally fitted with a waterproof shell, and the stirring rod 17 is provided with stirring blades, which are located at the discharge end of the connecting pipe 12.

[0034] In this embodiment, the waterproof shell is used to prevent moisture from entering the motor 18, protecting the motor 18 from damage and avoiding the risk of short circuit or damage to the motor 18 due to moisture. This improvement increases the service life and reliability of the motor 18, while also ensuring the stable operation of the cooling system. The design of the stirring blades allows the stirring rod 17 to mix ice cubes and cooling water more effectively when rotating, improving stirring efficiency and mixing uniformity. The stirring blades can also increase the power of the water flow, promote water circulation and exchange, and further improve the cooling effect. The discharge end of the connecting pipe 12 is located near the stirring blades, which helps the ice cubes to be broken up by the stirring blades and mixed into the cooling water more quickly.

[0035] In summary, compared with related technologies, this device ensures precise control of the pressing force through the combined use of cylinder 3 and spring 5. The combination of heating plate 6 and heat insulation sleeve 7 achieves effective heating while preventing heat transfer from damaging the surrounding environment and components. The introduction of cooling components, including the coordinated work of metal plate 8, liquid outlet channel 9, hot water pump 10, and liquid inlet pipe 11, enables rapid cooling of the circuit board. The design of water tank 1 and its supporting components, such as connecting pipe 12, drain pipe 14, alarm 15, observation window 16, stirring rod 17, and motor 18, further improve the efficiency and stability of the cooling system. Overall, this utility model improves the safety, reliability, and performance stability of the hot melt machine, ensuring that the circuit board achieves the best processing effect during the hot melt process.

[0036] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A hot melt machine for printed circuit boards, characterized in that, include: Water tanks used for storing cooling water; A mounting bracket fixed to the top of the water tank, the mounting bracket being equipped with a cylinder for adjusting the pressing force; A spring for buffering pressure is fixed to the cylinder output rod by a mounting plate; A heating plate for hot melt adhesive sheet is fixed to the bottom of the spring, and a heat insulation sleeve for heat insulation is fixedly sleeved on the outside of the heating plate; A cooling component is installed on the water tank for rapidly cooling the circuit board.

2. The hot melt machine for printed circuit boards as described in claim 1, characterized in that, The cooling assembly includes a metal plate, an outlet channel, a hot water pump, and an inlet pipe. The metal plate is fixed to the top of the water tank, the outlet channel is located inside the metal plate, the hot water pump is installed inside the water tank, the inlet pipe extends into the outlet channel, and a drain pipe extends out of the outlet channel.

3. The hot melt machine for printed circuit boards as described in claim 1, characterized in that, The water tank is equipped with a connecting pipe and a drain pipe on both sides. The top of the connecting pipe is equipped with a guide hopper for guiding the ice blocks to discharge, and the drain pipe is used to provide a channel to discharge excess cooling water.

4. The hot melt machine for printed circuit boards as described in claim 1, characterized in that, An alarm is installed on the water tank, and the alarm is equipped with a temperature sensor. The detection probe of the temperature sensor extends into the water tank, and the water tank is equipped with an observation window for displaying the water level.

5. The hot melt machine for printed circuit boards as described in claim 3, characterized in that, A stirring rod is rotatably installed inside the water tank, and a motor is installed at the bottom of the water tank. The output shaft of the motor is fixedly connected to the stirring rod, and the stirring rod is used to mix ice cubes and cooling water.

6. The hot melt machine for printed circuit boards as described in claim 1, characterized in that, A limiting rod that passes through the spring is installed on the top of the heat insulation sleeve. An opening is provided on the mounting plate. The limiting rod extends through the opening to the top of the mounting plate. A limiting block is fixed to the top of the limiting rod.

7. The hot melt machine for printed circuit boards as described in claim 5, characterized in that, The motor is fitted with a waterproof shell, and the stirring rod is equipped with stirring blades, which are located at the discharge end of the connecting pipe.

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