hot press

Abstract

The application relates to the technical field of circuit board manufacturing, and discloses a hot press, which is used for pressing and forming a multilayer circuit board, and comprises a machine body, a liquid channel pipeline storage box and a liquid flow check valve assembly. The liquid channel pipeline storage box is connected to the machine body and communicates with the inside of the machine body to form a vacuum cavity. The bottom of the liquid channel pipeline storage box is provided with a first liquid discharge port which communicates with the vacuum cavity. The liquid flow check valve assembly comprises a liquid collecting bin and a liquid flow check valve pipeline. The liquid collecting bin is connected to the first liquid discharge port through the liquid flow check valve pipeline to form a fluid channel for sucking a vacuum in the liquid collecting bin. The liquid flow check valve pipeline is used for inhibiting the backflow of liquid into the liquid channel pipeline storage box, effectively solves the problem of liquid leakage collection in the hot press, and makes the hot press unnecessary to additionally set an energy-consuming suction pump and arrange a cable, thereby helping to save energy.

Description

Technical Field

[0001] This application relates to the field of circuit board manufacturing technology, and in particular to a hot press. Background Technology

[0002] Pipelines inside hot presses are prone to cracking and leakage due to material fatigue, repeated bending, and other factors.

[0003] In related technologies, suction pumps such as electric gear pumps or diaphragm pumps are usually used to collect leaks. These suction pumps all require electric power, which makes wiring difficult and is not energy-efficient. Utility Model Content

[0004] In order to overcome the problems existing in the prior art, the main objective of this application is to provide a hot press.

[0005] To achieve the above objectives, this application adopts the following technical solution.

[0006] According to an embodiment of this application, a hot press is provided for pressing and molding multilayer circuit boards. The hot press includes a machine body, a liquid pipeline storage box, and a liquid flow check assembly. The liquid pipeline storage box is connected to the machine body and communicates with the interior of the machine body to form a vacuum chamber. The bottom of the liquid pipeline storage box is provided with a first drain port communicating with the vacuum chamber. The liquid flow check assembly includes a liquid collection chamber and a liquid flow check pipe. The liquid collection chamber is connected to the first drain port through the liquid flow check pipe to form a fluid channel for drawing vacuum from the liquid collection chamber, and the liquid flow check pipe is used to prevent liquid from flowing back into the liquid pipeline storage box.

[0007] The first possible scenario is that the liquid flow check pipe has a first connector and a second connector at both ends, and the liquid collection chamber is provided with a liquid collection port; the first connector and the first drain port are sealed together, and the second connector and the liquid collection port are sealed together; the height of the liquid collection port in the vertical direction is lower than the height of the first drain port in the vertical direction.

[0008] The second possibility is that the liquid flow check valve also includes a liquid level detector, which is connected to the liquid collection tank and used to detect the liquid level in the liquid collection tank.

[0009] The third possibility is that the liquid level detector includes a liquid level display chamber, which is connected to the liquid collection chamber and located on the horizontal side of the liquid collection chamber; the liquid level display chamber is provided with a liquid level detection cavity and a first liquid passage hole, the liquid collection chamber is provided with a liquid collection cavity and a second liquid passage hole, the first liquid passage hole and the second liquid passage hole are connected, and the liquid flow check pipe is connected to the liquid collection cavity.

[0010] The fourth possibility is that the liquid level display chamber has a first light-transmitting part on one side along the horizontal direction, and the first light-transmitting part is opposite to the liquid level detection chamber; in the vertical direction, the bottom height of the first light-transmitting part is lower than the top height of the liquid collection chamber, and the top height of the first light-transmitting part is higher than or equal to the top height of the liquid collection chamber; and / or, the liquid collection chamber has a second light-transmitting part on one side along the horizontal direction, and the second light-transmitting part is opposite to the liquid collection chamber; in the vertical direction, the bottom height of the second light-transmitting part is lower than the top height of the liquid collection chamber, and the top height of the second light-transmitting part is higher than or equal to the top height of the liquid collection chamber.

[0011] The fifth possibility is that the first liquid passage is near the bottom of the liquid level detection chamber, and the second liquid passage is near the bottom of the liquid collection chamber.

[0012] The sixth possibility is that the liquid collection chamber is also provided with a second drain port, which is connected to the liquid collection cavity, and the liquid flow check assembly also includes a first switching valve connected to the second drain port for opening or closing the second drain port; and / or, the liquid level display chamber is also provided with a third drain port, which is connected to the liquid level detection cavity, and the liquid flow check assembly also includes a second switching valve connected to the third drain port for opening or closing the third drain port.

[0013] The seventh possibility is that the fluid flow check assembly also includes a position detector and an indicator. The position detector is connected to the liquid level display chamber and is used to detect the liquid level in the liquid level detection chamber. The position detector and the indicator are communicatively connected. The indicator is configured to issue an indicator signal based on the detection information from the position detector.

[0014] The eighth possible scenario is that the inner bottom wall of the liquid pipeline storage box is provided with a liquid collection tank, which includes a tank opening, a tank bottom wall and a tank peripheral wall. The tank opening is spaced above the tank bottom wall and connects to the vacuum chamber; the tank peripheral wall extends from the tank opening to the tank bottom wall; wherein, the first liquid outlet is located on the tank bottom wall; and / or, the inner diameter of the tank peripheral wall gradually increases from the tank bottom wall towards the tank opening.

[0015] The ninth possibility is that the hot press also includes a locking mechanism, and the liquid collection tank is detachably connected to the liquid pipeline storage box via the locking mechanism.

[0016] The hot press according to the embodiments of this application has at least the following beneficial effects: by setting a first drain port at the bottom of the liquid pipeline storage box and communicating with the vacuum chamber, the liquid collection chamber is connected to the first drain port through a liquid flow check pipe, forming a fluid channel for evacuating the liquid collection chamber, so that when the gas in the vacuum chamber is extracted, the gas in the liquid collection chamber will also be extracted through the fluid channel. When both the vacuum chamber and the collection chamber are evacuated to a vacuum state, or when both are at atmospheric pressure, the pressures inside the vacuum chamber and the collection chamber are approximately equal. Liquid in the vacuum chamber can drain into the collection chamber through the fluid channel under gravity. However, in the initial stage of vacuum breaking in the vacuum chamber, the vacuum breaking time inside the collection chamber is later than that in the vacuum chamber, creating a negative pressure. Liquid in the vacuum chamber is then rapidly drawn into the collection chamber through the fluid channel, achieving rapid drainage. In this way, liquid leaking from the hot press can be automatically and continuously drawn into the collection chamber for storage, eliminating the need for an additional energy-consuming suction pump. This achieves continuous liquid suction with zero external power and zero energy consumption, avoiding pump failure and eliminating the need for cabling, thus contributing to energy savings. Furthermore, the liquid flow check pipe can prevent liquid in the collection chamber from flowing back into the liquid pipeline receiving box, improving the stability of the liquid flow check pipe assembly in collecting liquid.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the hot press in the embodiments of this application; Figure 2 This is a partial cross-sectional view of the hot press in an embodiment of this application; Figure 3 for Figure 1 Enlarged structural diagram at point III; Figure 4 This is a schematic diagram of the structure of the fluid flow check component in the embodiments of this application; Figure 5 This is a schematic diagram of the flow check assembly from another perspective in the embodiments of this application; Figure 6 This is a schematic diagram illustrating the communication connection between the controller, position detector, and prompter provided in an embodiment of this application.

[0019] Figure label: Hot press 100; machine body 110; Liquid pipeline storage box 130; vacuum chamber 131; first drain outlet 133; liquid collection tank 135; tank opening 1351; tank bottom wall 1353; tank peripheral wall 1355; Liquid flow check valve assembly 150; liquid collection chamber 151; liquid collection port 1511; liquid flow check valve pipe 153; fluid channel 156; first connector 1531; second connector 1533; pipe body 1535; mounting part 154; liquid level display chamber 155; first light-transmitting part 1551; first switching valve 157; controller 158; position detector 159; indicator 161. Detailed Implementation

[0020] The following will clearly and completely describe the concept and technical effects of this application in conjunction with embodiments, so as to fully understand the purpose, features and effects of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application.

[0021] In the description of the embodiments of this application, if directional descriptions are involved, such as "up", "down", "front", "back", "left", "right" etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or device 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 this application.

[0022] In the description of the embodiments of this application, if a feature is referred to as "setting," "fixing," "connecting," or "installing" on another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, connected, or installed on the other feature. In the description of the embodiments of this application, if "several" is involved, it means one or more; if "multiple" is involved, it means two or more; if "greater than," "less than," or "exceeds," it should be understood as excluding the stated number; if "above," "below," or "within," it should be understood as including the stated number. If "first" or "second" is involved, it should be understood as used to distinguish technical features, and not as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0023] Please see Figures 1 to 2 A hot press 100 according to an embodiment of this application is used for pressing and molding multilayer circuit boards. The hot press 100 includes a body 110, a liquid pipeline storage box 130 and a liquid flow check assembly 150.

[0024] The liquid pipeline storage box 130 is connected to the body 110, and the liquid pipeline storage box 130 is connected to the inside of the body 110 to form a vacuum chamber 131. The bottom of the liquid pipeline storage box 130 is provided with a first drain port 133 that connects to the vacuum chamber 131, so that the liquid in the vacuum chamber 131 can be discharged through the first drain port 133.

[0025] As an example, the hot press 100 may also include a hot press plate assembly, a piping assembly, and a lifting cylinder. A liquid piping storage box 130 may be connected to one side of the machine body 110 along the horizontal direction. The machine body 110 may have a hot press chamber, and the liquid piping storage box 130 may have a storage chamber. The hot press chamber and the storage chamber are connected to form a vacuum chamber 131. The hot press plate assembly may be located inside the hot press chamber, and the lifting cylinder may be located below the hot press plate assembly for driving the hot press plate assembly to hot press the circuit board material. The piping assembly may be located inside the vacuum chamber 131 and is used to supply a liquid heat exchange medium to the hot press plate assembly. The liquid heat exchange medium may include a liquid heating medium or a liquid cooling medium to heat or cool the hot press plate assembly. Due to material fatigue, repeated bending, and other factors, the piping assembly is prone to cracking and leakage, causing the supplied liquid heat exchange medium to leak into the vacuum chamber 131. The liquid in the vacuum chamber 131 can be discharged through the first drain port 133.

[0026] Please see Figures 2 to 4 The liquid flow check assembly 150 includes a liquid collection chamber 151 and a liquid flow check pipe 153. The liquid collection chamber 151 is connected to the first drain port 133 through the liquid flow check pipe 153, forming a fluid channel 156 for evacuating the liquid collection chamber 151. Thus, when the gas in the vacuum chamber 131 is evacuated, the gas in the liquid collection chamber 151 will also be evacuated through the fluid channel 156. When both the vacuum chamber 131 and the liquid collection chamber 151 are evacuated to a vacuum state, or when both the vacuum chamber 131 and the liquid collection chamber 151 are at atmospheric pressure, the pressure inside the vacuum chamber 131 and the liquid collection chamber 151 is approximately equal. The liquid in the vacuum chamber 131 can be discharged into the liquid collection chamber 151 through the fluid channel 156 under the action of gravity. However, in the initial stage of breaking the vacuum in the vacuum chamber 131, the time for breaking the vacuum inside the liquid collection chamber 151 will be later than the time for breaking the vacuum in the vacuum chamber 131. A negative pressure is formed inside the liquid collection chamber 151, and the liquid in the vacuum chamber 131 is quickly drawn into the liquid collection chamber 151 through the fluid channel 156, achieving rapid liquid discharge.

[0027] Thus, the hot press 100 provided in this application embodiment can effectively collect the liquid in the vacuum chamber 131 by setting the liquid flow check component 150. The liquid leaking inside the hot press 100 can be automatically and continuously sucked into the collection tank 151 for storage without the need for an additional energy-consuming suction pump. This achieves continuous liquid suction with zero external power and zero energy consumption, avoiding the situation of suction pump failure. Moreover, there is no need to lay cables, which helps to save energy. In addition, it also helps to reduce the frequency of hot press 100 shutdown for inspection. On the one hand, it can reduce the downtime for inspection and improve production efficiency. On the other hand, it can avoid the situation where the liquid in the vacuum chamber 131 leaks again during the unpacking inspection process, which would contaminate the hot press 100 and the ground. This helps to avoid the fire hazard caused by secondary liquid leakage.

[0028] Specifically, during the hot pressing of the circuit board material by the hot press 100, the gas in the vacuum chamber 131 is extracted by the vacuum device. Since the liquid collection chamber 151 is connected to the first drain port 133 through the liquid flow check pipe 153, the vacuum chamber 131 and the liquid collection chamber 151 can be evacuated to a vacuum state. At this time, the pressure in the vacuum chamber 131 and the liquid collection chamber 151 is approximately equal. The liquid collected in the vacuum chamber 131 can be discharged into the liquid collection chamber 151 through the first drain port 133 under its own gravity. When the hot press 100 finishes hot pressing the circuit board material in the current hot pressing chamber, the vacuum chamber 131 is vented to facilitate unloading and loading of new circuit board material. In the initial stage of venting the vacuum chamber 131, the venting time of the liquid collection chamber 151 will be later than that of the vacuum chamber 131. During this period, the pressure in the liquid collection chamber 151 is lower than the pressure in the vacuum chamber 131. Under the action of pressure difference, the liquid collection chamber 151 can quickly draw liquid from the vacuum chamber 131 through the fluid channel 156. After both the vacuum chamber 131 and the liquid collection chamber 151 are vented, both the vacuum chamber 131 and the liquid collection chamber 151 return to normal atmospheric pressure. The liquid collected in the vacuum chamber 131 can be discharged into the liquid collection chamber 151 through the fluid channel 156 under its own gravity. Thus, the hot press 100 can achieve continuous liquid suction with zero external power and zero energy consumption.

[0029] The liquid flow check pipe 153 is used to suppress liquid backflow into the liquid path pipe storage box 130, which helps to prevent liquid in the liquid collection tank 151 from flowing back into the vacuum chamber 131, thereby improving the stability of liquid collection by the liquid flow check component 150.

[0030] As an example, the vertical height of one end of the liquid flow check pipe 153 connected to the first drain port 133 can be higher than the vertical height of the other end of the liquid flow check pipe 153 connected to the liquid collection chamber 151. The height difference between the two ends can suppress the backflow of liquid in the liquid collection chamber 151 into the vacuum chamber 131.

[0031] It should be noted that the fluid flow check component 150 in this embodiment adopts a modular structure, which can adapt to hot presses 100 of different tonnages and expand the application range.

[0032] When evacuating the vacuum chamber 131, the gas inside the vacuum chamber 131 can be extracted using a vacuum extraction device from the factory, or the hot press 100 may include a vacuum extraction device.

[0033] Understandably, the hot press 100 may also include locking components.

[0034] The liquid collection tank 151 is detachably connected to the liquid pipeline storage box 130 by a locking device to facilitate the replacement and cleaning of the liquid collection tank 151.

[0035] As an example, the liquid collection tank 151 is detachably connected to the bottom of the liquid pipeline storage box 130 via a locking member. The top of the liquid collection tank 151 has a protruding mounting portion 154, which may have a first mounting hole. The bottom of the liquid pipeline storage box 130 may have a second mounting hole, with the first and second mounting holes facing each other. The locking member can pass through the first mounting hole and connect to the second mounting hole. The second mounting hole may be a threaded hole, and the locking member may be a screw, stud, rivet, or other locking structure.

[0036] The number of mounting parts 154 can also be multiple, and each mounting part 154 can be connected to the liquid pipeline storage box 130 by at least one locking member, which helps to make the connection between the liquid collection tank 151 and the liquid pipeline storage box 130 more stable.

[0037] It is understood that the inner bottom wall of the liquid pipeline storage box 130 may be provided with a liquid collection tank 135, which may include a tank opening 1351, a tank bottom wall 1353 and a tank peripheral wall 1355.

[0038] The groove openings 1351 are spaced above the bottom wall 1353 and connected to the vacuum chamber 131. The peripheral wall 1355 of the groove can extend from the groove openings 1351 to the bottom wall 1353. The first drain port 133 can be located on the bottom wall 1353, so that the liquid collection tank 135 can collect the liquid in the vacuum chamber 131 and discharge it from the first drain port 133.

[0039] Understandably, the inner diameter of the tank perimeter wall 1355 can gradually increase from the tank bottom wall 1353 toward the tank opening 1351, which helps to guide the liquid more smoothly to the bottom of the tank.

[0040] The groove wall 1355 can be in the form of a circular ring, a polygonal ring, an elliptical ring, or other ring shapes.

[0041] It is understood that the fluid flow check pipe 153 has a first connector 1531 and a second connector 1533 at both ends. For example, the fluid flow check pipe 153 may include a pipe body 1535, with the first connector 1531 and the second connector 1533 respectively connected to both ends of the pipe body 1535. The pipe body 1535 may be a flexible pipe or a rigid pipe.

[0042] The liquid collection chamber 151 is provided with a liquid collection port 1511, which can be connected to the interior of the liquid collection chamber 151.

[0043] The first connector 1531 and the first drain port 133 can be sealed together, and the second connector 1533 and the collection port 1511 can be sealed together. Thus, the first drain port 133 and the collection port 1511 can be sealed together through the liquid flow check pipe 153, which helps to avoid air leakage during vacuuming. In addition, by setting the liquid flow check pipe 153 to connect the first drain port 133 and the collection port 1511, it is also helpful to arrange the position of the collection chamber 151 more flexibly.

[0044] As an example, the inner wall of the first drain port 133 may be provided with internal threads, and the first connector 1531 may be provided with external threads. The first connector 1531 can be threadedly connected to the first drain port 133 to seal the gap between the first connector 1531 and the first drain port 133, and facilitate disassembly. Sealing adhesive, sealing rings, sealing tape, or other sealing structures can also be provided between the first connector 1531 and the first drain port 133 for further sealing, further reducing the possibility of air leakage.

[0045] The connection method between the second connector 1533 and the liquid collection port 1511 can be referred to the connection method between the first connector 1531 and the first liquid discharge port 133, and will not be repeated here.

[0046] The height of the liquid collection port 1511 in the vertical direction can be lower than the height of the first liquid discharge port 133 in the vertical direction, so that the liquid in the vacuum chamber 131 can flow more smoothly to the liquid collection port 1511 under the action of gravity.

[0047] Understandably, the flow check assembly 150 may also include a level detector.

[0048] The liquid level detector can be connected to the liquid collection tank 151 to detect the liquid level in the liquid collection tank 151. The liquid level in the liquid collection tank 151 can be determined based on the detection result of the liquid level detector, so as to remind the staff to drain the liquid in the liquid collection tank 151. This helps to avoid the situation where the liquid collection tank 151 fails due to excessive liquid in the liquid collection tank 151. It also avoids the situation where the staff cannot see the liquid level in the liquid collection tank 151 and need to regularly disassemble the liquid flow check component 150 for inspection, thus reducing inspection time.

[0049] The liquid level detector can be an electronic liquid level detector. When the liquid level detector is electronic, it can be located inside the liquid collection tank 151, for example, at the top of the liquid collection tank 151, to detect the highest liquid level within it. When the liquid level detector detects liquid, it can issue an alarm signal, which can be at least one of a light signal and an audible signal. Alternatively, the liquid level detector can also feed back the liquid level information in the liquid collection tank 151 to the controller 158 of the hot press 100 in the form of a signal (e.g., ...). Figure 6 (As shown), to remind staff to drain the liquid in collection chamber 151.

[0050] The controller 158 is a feedback loop component widely used in industrial control applications. For example, the controller 158 can be a PLC (Programmable Logic Controller), which internally stores instructions for performing logical operations, sequential control, timing, counting, and arithmetic operations. It controls various types of mechanical equipment, mechanisms, or production processes through digital or analog inputs and outputs. The control process and methods implemented by the controller 158 are achievable by those skilled in the art based on commonly used controllers 158 in existing industrial equipment, and will not be elaborated upon here.

[0051] Please see Figure 2 , Figure 3 and Figure 5 The level detector can also adopt a mechanical structure. It is understood that the level detector may include a level display chamber 155.

[0052] The liquid level display chamber 155 can be connected to the liquid collection chamber 151 and is located on the horizontal side of the liquid collection chamber 151. That is, the liquid level display chamber 155 and the liquid collection chamber 151 can be distributed in the horizontal direction and are roughly at the same height.

[0053] The liquid level display chamber 155 is equipped with a liquid level detection chamber and a first liquid passage. The liquid collection chamber 151 is equipped with a liquid collection chamber and a second liquid passage. The first liquid passage and the second liquid passage are connected. The liquid flow check pipe 153 is connected to the liquid collection chamber, so that the liquid in the vacuum chamber 131 can enter the liquid collection chamber through the fluid channel 156. The liquid in the liquid collection chamber can enter the liquid level detection chamber, so that the operator can observe the liquid level through the liquid level display chamber 155. It should be noted that the liquid level display chamber 155 and the liquid collection chamber 151 are roughly at the same spatial height, and the liquid level detection chamber and the liquid collection chamber are also roughly at the same spatial height. Therefore, the liquid levels in the liquid level detection chamber and the liquid collection chamber are basically the same. The operator can roughly determine the liquid level in the liquid collection chamber by observing the liquid level in the liquid level detection chamber.

[0054] The liquid level display chamber 155 can be made entirely of light-transmitting material, making it easier to observe the liquid level. The liquid level display can also show the liquid level through other methods.

[0055] It is understood that the fluid flow check valve assembly 150 may also include a position detector 159 and an indicator 161 (such as...). Figure 6 (As shown).

[0056] The position detector 159 can be connected to the liquid level display chamber 155 to detect the liquid level in the liquid level detection chamber.

[0057] The position detector 159 and the indicator 161 are connected in communication. The indicator 161 is configured to issue an indicator signal based on the detection information of the position detector 159. In this way, the position detector 159 can remind the staff of the liquid level in the liquid level detection chamber, which helps to avoid the situation where the staff need to regularly disassemble the liquid flow check assembly 150 for inspection because they cannot see the liquid level in the liquid collection chamber, thus reducing the inspection time.

[0058] The indicator 161 can be connected to the body 110 (e.g. Figure 1 The liquid pipeline storage box 130, the liquid collection tank 151, and the liquid level display tank 155 shown in the figure, or the indicator 161 can be placed separately on the ground or in other locations.

[0059] As an example, the position detector 159 may include a main body and a sensing unit. The sensing unit may be located inside the liquid level detection chamber, and the main body may be connected to the outside of the liquid level display chamber 155. Both the main body and the indicator 161 can be communicatively connected to the controller 158. The sensing unit can send a sensing signal to the main body based on the liquid it comes into contact with inside the liquid level detection chamber. The main body can send a first signal to the controller 158 based on the received sensing signal. The controller 158 can send a second signal to the indicator 161 based on the received first signal. The indicator 161 can then issue an alert signal to remind the operator. The position of the sensing unit inside the liquid level detection chamber can be flexibly set according to requirements. For example, the sensing unit can be located at the top of the liquid level detection chamber, in which case the position detector 159 can reflect the highest liquid level inside the liquid level detection chamber. When the sensing unit and the top of the collection chamber are at the same height, the position detector 159 can reflect the highest liquid level inside the collection chamber to remind the operator to drain the liquid from the collection chamber.

[0060] The prompt signal may include at least one of the sound signal and the light signal.

[0061] It should be noted that the controller 158 can also work with an IoT gateway and a SIM card to send notification messages to the target's mobile phone. Specifically, the controller 158 communicates with the IoT gateway, which has 4G / 5G communication capabilities, via a serial port, such as RS484 / 232, and then the corresponding notification messages are configured in the IoT gateway management software. When the controller 158 receives the first signal from the location detector 159, the IoT gateway sends the notification message to the target's mobile phone, thus enabling timely notification through the IoT gateway.

[0062] It is understandable that the liquid level display chamber 155 may have a first light-transmitting part 1551 on one side along the horizontal direction.

[0063] The first light-transmitting part 1551 and the liquid level detection chamber can be opposite each other, so that the liquid in the liquid level detection chamber can be observed through the first light-transmitting part 1551.

[0064] In the vertical direction, the bottom of the first light-transmitting part 1551 is lower than the top of the liquid collecting chamber, and the top of the first light-transmitting part 1551 is higher than or level with the top of the liquid collecting chamber. Thus, when the liquid in the liquid collecting chamber reaches its highest level, the liquid level in the liquid level detection chamber is approximately level with the liquid level in the liquid collecting chamber. The highest liquid level in the liquid collecting chamber can be displayed through the first light-transmitting part 1551, so as to remind the staff to drain the liquid in the liquid collecting chamber and avoid the situation where the liquid collecting chamber 151 fails due to overfilling. In addition, if the indicator 161 or the position detector 159 fails, the staff can still visually determine the highest liquid level in the liquid collecting chamber through the first light-transmitting part 1551, further preventing the liquid collecting chamber 151 from failing.

[0065] The first light-transmitting part 1551 can be made of light-transmitting materials such as glass or transparent plastic. The position of the first light-transmitting part 1551 on the side of the liquid level display tank 155 can be set as needed to avoid being blocked by other structures. For example, the first light-transmitting part 1551 can be located on the side of the liquid level display tank 155 that is away from the liquid collection tank 151.

[0066] It is understandable that the liquid collection chamber 151 may have a second light-transmitting section on one side along the horizontal direction.

[0067] The second light-transmitting part is opposite to the liquid collection cavity, so that the liquid in the liquid collection cavity can be observed through the second light-transmitting part.

[0068] In the vertical direction, the bottom of the second light-transmitting part is lower than the top of the liquid collection chamber, and the top of the second light-transmitting part is higher than or level with the top of the liquid collection chamber. This allows the highest liquid level in the liquid collection chamber to be observed directly through the second light-transmitting part, so as to remind the staff to drain the liquid in the liquid collection chamber and avoid the liquid collection tank 151 from becoming too full and malfunctioning. In addition, if the indicator 161 or the position detector 159 fails, the staff can still determine the highest liquid level in the liquid collection chamber through the second light-transmitting part, further preventing the liquid collection tank 151 from malfunctioning.

[0069] The second light-transmitting part can be made of light-transmitting materials such as glass or transparent plastic. The position of the second light-transmitting part on the side of the liquid collection tank 151 can be set as needed to avoid being blocked by other structures. For example, the second light-transmitting part can be set on the side of the liquid level display tank 155 that is opposite to the liquid collection tank 151.

[0070] It should be noted that the liquid collection tank 151 can also be made entirely of light-transmitting material, which makes it easier to observe the liquid level.

[0071] Understandably, the first liquid passage can be located near the bottom of the liquid level detection chamber, and the second liquid passage can be located near the bottom of the liquid collection chamber, so as to better ensure that the liquid level in the liquid level detection chamber and the liquid collection chamber can always be kept consistent.

[0072] As an example, the bottom of the liquid level detection chamber and the bottom of the liquid collection chamber are roughly on the same horizontal plane, while the top of the liquid level detection chamber may be higher than or level with the top of the liquid collection chamber.

[0073] Understandably, the liquid collection chamber 151 may also be equipped with a second drain port.

[0074] The second drain port can be connected to the liquid collection chamber. The liquid flow check valve assembly 150 also includes a first switch valve 157, which is connected to the second drain port and is used to open or close the second drain port. Thus, the liquid in the liquid collection chamber and the liquid level detection chamber can be quickly discharged by opening the first switch valve 157.

[0075] It is understandable that the first switching valve 157 can be a mechanical valve or an electric valve. For example, the first switching valve 157 can be a ball valve.

[0076] The location of the second drain outlet can be flexibly set according to needs. For example, the second drain outlet can be located near or at the bottom of the liquid collection tank 151 so as to use the gravity of the liquid to drain the liquid more smoothly.

[0077] Understandably, the liquid level display chamber 155 is also provided with a third drain port, which is connected to the liquid level detection chamber. The liquid flow check valve assembly 150 also includes a second switch valve, which is connected to the third drain port and is used to open or close the third drain port, so that the liquid in the collection chamber and the liquid level detection chamber can be quickly discharged by opening the second switch valve.

[0078] It is understandable that the second switching valve can be a mechanical valve or an electric valve; for example, the first switching valve 157 can also be a ball valve.

[0079] The location of the third drain outlet can be flexibly set according to needs. For example, the third drain outlet can be located near or at the bottom of the liquid level display chamber 155 to utilize the gravity of the liquid to drain the liquid more smoothly.

[0080] In the hot press 100 provided in this application embodiment, a first drain port 133 communicating with a vacuum chamber 131 is provided at the bottom of the liquid pipeline storage box 130. The liquid collection chamber 151 is connected to the first drain port 133 through a liquid flow check pipe 153, forming a fluid channel 156 for evacuating the vacuum chamber 151. Thus, when the gas in the vacuum chamber 131 is extracted, the gas in the liquid collection chamber 151 is also extracted through the fluid channel 156. When both the vacuum chamber 131 and the liquid collection chamber 151 are evacuated to a vacuum state, or when both are at atmospheric pressure, the pressures inside the vacuum chamber 131 and the liquid collection chamber 151 are approximately equal. The liquid in the vacuum chamber 131 can be discharged into the liquid collection chamber 151 through the fluid channel 156 under the influence of gravity. In the initial stage of breaking the vacuum in the vacuum chamber 131, the time for breaking the vacuum in the liquid collection chamber 151 is later than that of breaking the vacuum in the vacuum chamber 131. A negative pressure is formed inside the liquid collection chamber 151, and the liquid in the vacuum chamber 131 is quickly drawn into the liquid collection chamber 151 through the fluid channel 156, achieving rapid liquid discharge. In this way, the liquid leaking from the hot press 100 can be automatically and continuously sucked into the liquid collection chamber 151 for storage without the need for an additional energy-consuming suction pump. This achieves continuous liquid suction with zero external power and zero energy consumption, avoiding the situation of suction pump failure, and eliminating the need for cabling, which helps to save energy. In addition, the liquid flow check pipe 153 can also prevent the liquid in the liquid collection tank 151 from flowing back into the liquid pipeline storage box 130, thereby improving the stability of the liquid flow check component 150 in collecting liquid.

[0081] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A hot press for pressing and molding multilayer circuit boards, characterized in that, include: Organism; A liquid pipeline storage box is connected to the machine body, and the liquid pipeline storage box is connected to the inside of the machine body to form a vacuum chamber. The bottom of the liquid pipeline storage box is provided with a first drain port that connects to the vacuum chamber. The liquid flow check assembly includes a liquid collection tank and a liquid flow check pipe; the liquid collection tank is connected to the first drain port through the liquid flow check pipe to form a fluid channel for evacuating the liquid collection tank, and the liquid flow check pipe is used to prevent liquid from flowing back into the liquid pipeline storage box.

2. The hot press according to claim 1, characterized in that, The liquid flow check pipe has a first connector and a second connector at both ends, and the liquid collection chamber is provided with a liquid collection port; the first connector and the first drain port are sealed together, and the second connector and the liquid collection port are sealed together. The height of the liquid collection port in the vertical direction is lower than the height of the first liquid discharge port in the vertical direction.

3. The hot press according to claim 1, characterized in that, The liquid flow check valve assembly also includes a liquid level detector connected to the liquid collection tank for detecting the liquid level in the liquid collection tank.

4. The hot press according to claim 3, characterized in that, The liquid level detector includes a liquid level display compartment, which is connected to the liquid collection compartment and located on one side of the liquid collection compartment in the horizontal direction. The liquid level display chamber is provided with a liquid level detection chamber and a first liquid passage hole, and the liquid collection chamber is provided with a liquid collection chamber and a second liquid passage hole. The first liquid passage hole and the second liquid passage hole are connected, and the liquid flow check pipe is connected to the liquid collection chamber.

5. The hot press according to claim 4, characterized in that, The liquid level display chamber has a first light-transmitting part on one side along the horizontal direction, and the first light-transmitting part is opposite to the liquid level detection chamber; in the vertical direction, the bottom height of the first light-transmitting part is lower than the top height of the liquid collection chamber, and the top height of the first light-transmitting part is higher than or level with the top height of the liquid collection chamber. And / or, the liquid collection chamber has a second light-transmitting portion on one side along the horizontal direction, the second light-transmitting portion being opposite to the liquid collection cavity; along the vertical direction, the bottom height of the second light-transmitting portion is lower than the top height of the liquid collection cavity, and the top height of the second light-transmitting portion is higher than or level with the top height of the liquid collection cavity.

6. The hot press according to claim 4, characterized in that, The first liquid passage is located near the bottom of the liquid level detection chamber, and the second liquid passage is located near the bottom of the liquid collection chamber.

7. The hot press according to claim 4, characterized in that, The liquid collection chamber is also provided with a second drain port, which is connected to the liquid collection chamber. The liquid flow check valve assembly also includes a first switching valve, which is connected to the second drain port and is used to open or close the second drain port. And / or, the liquid level display chamber is further provided with a third drain port, the third drain port is connected to the liquid level detection chamber, and the liquid flow check valve assembly further includes a second switch valve, the second switch valve is connected to the third drain port, and is used to open or close the third drain port.

8. The hot press according to claim 4, characterized in that, The liquid flow check valve assembly also includes a position detector and an indicator. The position detector is connected to the liquid level display chamber and is used to detect the liquid level in the liquid level detection chamber. The position detector and the indicator are communicatively connected. The prompter is configured to issue a prompt signal based on the detection information from the position detector.

9. The hot press according to claim 1, characterized in that, The inner bottom wall of the liquid pipeline storage box is provided with a liquid collection tank. The liquid collection tank includes a tank opening, a tank bottom wall, and a tank peripheral wall. The tank opening is spaced above the tank bottom wall and connects to the vacuum chamber. The tank peripheral wall extends from the tank opening to the tank bottom wall. Wherein, the first drain outlet is located on the bottom wall of the tank; and / or, the inner diameter of the tank perimeter wall gradually increases from the bottom wall of the tank towards the tank opening.

10. The hot press according to any one of claims 1 to 9, characterized in that, The hot press also includes a locking component, and the liquid collection chamber is detachably connected to the liquid pipeline storage box via the locking component.

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