Hot pressing device and hot press

Abstract

The utility model belongs to the technical field of PCB manufacturing, and relates to a hot pressing device and a hot press. The hot-pressing device comprises a rack, a first hot-pressing plate, a second hot-pressing plate, an oil supply mechanism and a plurality of oil cylinders, wherein the first hot-pressing plate and the second hot-pressing plate are arranged on the rack at intervals in the first direction; the oil cylinder is used for driving the first hot pressing plate to be close to or away from the second hot pressing plate in the first direction; the oil supply mechanism comprises an oil storage module and a flow collecting and distributing valve, the oil storage module is used for storing oil, the flow collecting and distributing valve is provided with a valve cavity, an oil inlet and a plurality of oil outlets, the oil inlet and the oil storage module are communicated, and the oil outlets are communicated with the oil cylinders in a one-to-one correspondence mode. The flow collecting and distributing valve is used for distributing oil entering the valve cavity from the oil inlet to the oil outlets in an equal-flow mode. According to the hot pressing device, pressure distribution during material pressing can be more uniform, and product defects caused by uneven pressure are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of PCB manufacturing technology, and in particular relates to a hot pressing device and a hot pressing machine. Background Technology

[0002] In modern electronics manufacturing, PCB (Printed Circuit Board) hot pressing equipment is the most crucial core equipment in the PCB lamination process. Its main function is to achieve the cross-linking reaction of resin materials under high temperature, high pressure, and low vacuum conditions, enabling a tight bond between the resin layer and the copper foil layer, thereby manufacturing high-performance multilayer circuit boards. With the rapid development of Artificial Intelligence (AI) and 5G technologies, the demand for single-machine output of hot pressing equipment is increasing, and the hot pressing plates of PCB hot pressing equipment are gradually developing towards ultra-wide formats. However, with the widening of the hot pressing plate size, the traditional single-cylinder drive structure struggles to ensure uniform pressure distribution in ultra-wide hot pressing equipment, easily leading to uneven pressure distribution, insufficient product flatness, and affecting product quality and production efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is: to provide a hot pressing device that addresses the difficulty of ensuring uniform pressure distribution in ultra-wide hot pressing devices using traditional single-cylinder drive structures.

[0004] To solve the above-mentioned technical problems, in a first aspect, the present invention provides a hot pressing device, including a frame, a first hot pressing plate, a second hot pressing plate, an oil supply mechanism, and a plurality of oil cylinders. The first hot pressing plate and the second hot pressing plate are spaced apart on the frame along a first direction. The oil cylinders are used to drive the first hot pressing plate to move closer to or further away from the second hot pressing plate along the first direction.

[0005] The oil supply mechanism includes an oil storage module and a flow-dividing valve. The oil storage module is used to store oil. The flow-dividing valve has a valve chamber and an oil inlet and multiple oil outlets connected to the valve chamber. The oil inlet is connected to the oil storage module, and each of the oil outlets is connected to each of the oil cylinders in a one-to-one correspondence. The flow-dividing valve is used to distribute the oil entering the valve chamber from the oil inlet to each of the oil outlets at an equal flow rate.

[0006] Optionally, the oil supply mechanism further includes a hydraulic drive module, which includes a high-pressure oil circuit and a low-pressure oil circuit. The high-pressure oil circuit and the low-pressure oil circuit are respectively connected between the oil storage module and the oil inlet. The oil pressure of the high-pressure oil circuit is greater than the oil pressure of the low-pressure oil circuit.

[0007] Optionally, the high-pressure oil circuit includes a high-pressure pump and a high-pressure relief valve. The oil inlet of the high-pressure pump is connected to the oil storage module, the oil outlet of the high-pressure pump is connected to the oil inlet, and the high-pressure relief valve is connected between the oil outlet of the high-pressure pump and the oil storage module. The high-pressure relief valve opens when the output oil pressure of the high-pressure pump is higher than a first preset value.

[0008] Optionally, the high-pressure oil circuit further includes a first pipeline and a pressure-holding module. The first pipeline is connected between the oil outlet of the high-pressure pump and the oil inlet. The pressure-holding module is connected to the first pipeline and is used to supply oil to the flow divider valve when the high-pressure pump is turned off.

[0009] Optionally, the low-pressure oil circuit includes a low-pressure pump and a low-pressure relief valve. The oil inlet of the low-pressure pump is connected to the oil storage module, the oil outlet of the low-pressure pump is connected to the oil inlet, and the low-pressure relief valve is connected between the oil outlet of the low-pressure pump and the oil storage module. The low-pressure relief valve opens when the output oil pressure of the low-pressure pump is higher than a second preset value.

[0010] Optionally, the low-pressure oil circuit further includes a second pipeline and a pressure relief valve. The second pipeline is connected between the oil outlet of the low-pressure pump and the oil inlet, and the pressure relief valve is connected between the second pipeline and the oil storage module.

[0011] When the pressure relief valve is opened, the output oil of the low-pressure pump can flow back to the oil storage module through the pressure relief valve.

[0012] Optionally, the oil storage module includes a high-pressure oil tank and a low-pressure oil tank, the high-pressure oil circuit is connected between the high-pressure oil tank and the oil inlet, and the low-pressure oil circuit is connected between the low-pressure oil tank and the oil inlet.

[0013] Optionally, the hot pressing device further includes a pressure sensor connected to any of the oil cylinders, the pressure sensor being used to detect the oil pressure of the oil cylinder connected to it.

[0014] Optionally, a plurality of the hydraulic cylinders are arranged sequentially at intervals along the edge of the first hot press plate.

[0015] Secondly, this utility model provides a hot press, including the hot pressing device described above. The frame includes a first vacuum door, a second vacuum door, two side plates, and two horizontal plates. The two side plates are spaced apart along a second direction. The two horizontal plates are spaced apart along a first direction and are respectively connected to the two side plates. The first vacuum door and the second vacuum door are spaced apart along a third direction. The first vacuum door is connected to the two side plates and the two horizontal plates, and a cavity is formed between the first vacuum door and the two side plates and the two horizontal plates.

[0016] The second vacuum door is slidably connected between the two side plates, so that the second vacuum door can slide between a closed position that closes the cavity and an open position that fully opens the cavity;

[0017] Both the first hot press plate and the second hot press plate are disposed within the cavity;

[0018] The second direction and the third direction are perpendicular to the first direction.

[0019] Optionally, both the first hot press plate and the second hot press plate can be slidably connected to at least one of the side plates along the first direction.

[0020] Optionally, the hot pressing device further includes a first heat insulation component and a second heat insulation component, wherein the first heat insulation component is installed between the piston rod of the oil cylinder and the first hot pressing plate, and the second heat insulation component is installed between the frame and the second hot pressing plate.

[0021] Optionally, the hot pressing device further includes a movable platform, and the piston rods of each of the hydraulic cylinders are respectively connected to the movable platform;

[0022] The first heat insulation component is installed between the movable platform and the first hot press plate.

[0023] Optionally, the hot pressing device further includes a third hot pressing plate, which is slidably connected to the frame along the first direction and disposed between the first hot pressing plate and the second hot pressing plate along the first direction.

[0024] Optionally, multiple third hot press plates are provided, and the multiple third hot press plates are spaced apart along the first direction and located between the first hot press plate and the second hot press plate.

[0025] Optionally, the first hot press plate, the second hot press plate, and the third hot press plate all include a plate body, the plate body being provided with a liquid inlet, a liquid outlet, and a flow channel, the flow channel being connected between the liquid inlet and the liquid outlet;

[0026] At least one of the first hot press plate, the second hot press plate, and the third hot press plate further includes a heating element, which is used to heat the corresponding plate body.

[0027] Optionally, the hot press further includes a third pipeline, a fourth pipeline, a liquid supply mechanism, and a cooling mechanism. The liquid supply mechanism is provided with a medium outlet and a medium inlet. The third pipeline connects the liquid inlet and the medium outlet, and the fourth pipeline connects the liquid outlet and the medium inlet.

[0028] The cooling mechanism is disposed in the fourth pipeline, and the cooling mechanism is used to cool the heat-conducting medium in the fourth pipeline.

[0029] According to the hot pressing device and hot press of this utility model embodiment, a flow-collecting and diverting valve is set between the oil storage module and each oil cylinder, and the oil inlet of the flow-collecting and diverting valve is connected to the oil storage module. Each oil outlet of the flow-collecting and diverting valve is connected to each oil cylinder in a corresponding manner, so that the oil is distributed to each oil cylinder in an equal flow rate through the flow-collecting and diverting valve, so that the piston rod of each oil cylinder obtains an equal lifting distance, and the pressure distribution during pressing is more uniform, avoiding product defects caused by uneven pressure. Compared with the scheme of using a single oil cylinder to drive the movement of the hot pressing plate, the hot pressing device of this utility model embodiment can significantly improve the flatness and quality of the laminated products. In addition, since multiple oil cylinders drive the first hot pressing plate to move simultaneously, the size of each hot pressing plate can be further expanded, thereby increasing the production capacity of the hot pressing device, making the hot pressing device more efficient in the production process and shortening the production cycle. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a hot pressing device provided in an embodiment of the present invention (without material placed on it);

[0031] Figure 2 This is another schematic diagram of the hot pressing device provided in one embodiment of the present invention (when no material is placed);

[0032] Figure 3 This is another schematic diagram of the hot pressing device provided in one embodiment of the present invention (when placing materials);

[0033] Figure 4 This is a schematic diagram of the oil supply mechanism and oil cylinder of a hot pressing device provided in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the first hot press plate of a hot press device provided in an embodiment of the present invention.

[0035] The reference numerals in the accompanying drawings are as follows:

[0036] 10. Hot pressing device; 101. Pressing space; 1011. Subspace;

[0037] 1. Frame; 11. First vacuum door; 12. Second vacuum door; 13. Side panel; 14. Horizontal panel; 15. Vacuum chamber;

[0038] 2. First hot press plate; 21. Plate body; 211. Liquid inlet; 212. Liquid outlet; 213. Flow channel; 22. Heating element;

[0039] 3. Second hot press plate;

[0040] 4. Oil supply mechanism; 41. Oil storage module; 411. High-pressure oil tank; 4111. First oil tank; 4112. Second oil tank; 412. Low-pressure oil tank; 4121. Third oil tank; 4122. Fourth oil tank; 42. Combining and splitting valve; a. Oil inlet; b. Oil outlet; L1. High-pressure oil circuit; 43. High-pressure pump; 44. High-pressure relief valve; 45. Pressure holding module; L2. Low-pressure oil circuit; 46. Low-pressure pump; 47. Low-pressure relief valve; 48. Integrated control module;

[0041] 5. Hydraulic cylinder; 51. Piston rod;

[0042] 6. First heat insulation component;

[0043] 7. Second heat insulation component;

[0044] 8. Activity platform;

[0045] 9. Third hot press plate;

[0046] 20. Materials;

[0047] z, first direction; x, second direction; y, third direction. Detailed Implementation

[0048] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0049] like Figures 1 to 5 As shown, the hot press provided in this embodiment of the present invention includes a hot pressing device 10. The hot pressing device 10 includes a frame 1, a first hot pressing plate 2, a second hot pressing plate 3, an oil supply mechanism 4, and a plurality of oil cylinders 5. The first hot pressing plate 2 and the second hot pressing plate 3 are spaced apart on the frame 1 along a first direction z, and a pressing space 101 can be formed between the first hot pressing plate 2 and the second hot pressing plate 3. Each oil cylinder 5 is respectively installed on the frame 1 and located on the side of the first hot pressing plate 2 away from the second hot pressing plate 3. The piston rod 51 of each oil cylinder 5 is respectively connected to the first hot pressing plate 2. The oil cylinder 5 is used to drive the first hot pressing plate 2 to move along the first direction z to move closer to or away from the second hot pressing plate 3.

[0050] The oil supply mechanism 4 includes an oil storage module 41 and a flow-dividing valve 42. The oil storage module 41 is used to store oil. The flow-dividing valve 42 has a valve chamber and an oil inlet a and multiple oil outlets b that are connected to the valve chamber. The oil inlet a is connected to the oil storage module 41, and each oil outlet b is connected to each oil cylinder 5 in a corresponding manner. The flow-dividing valve 42 is used to distribute the oil entering the valve chamber from the oil inlet a to each oil outlet b in equal flow rate.

[0051] The hot pressing device 10 provided in this embodiment of the present invention has a flow-collecting and diverting valve 42 between the oil storage module 41 and each oil cylinder 5. The oil inlet a of the flow-collecting and diverting valve 42 is connected to the oil storage module 41, and each oil outlet b of the flow-collecting and diverting valve 42 is connected to each oil cylinder 5 in a corresponding manner. This allows the flow-collecting and diverting valve 42 to distribute the oil flow equally to each oil cylinder 5, ensuring that the piston rod 51 of each oil cylinder 5 has an equal lifting distance. This results in a more uniform pressure distribution during pressing, avoiding product defects caused by uneven pressure. Compared to a single oil cylinder 5 driving the hot pressing plate movement, the hot pressing device 10 of this embodiment of the present invention can significantly improve the flatness and quality of laminated products. Furthermore, since multiple oil cylinders 5 drive the first hot pressing plate 2 simultaneously, the surface area of ​​each hot pressing plate can be further expanded, thereby increasing the production capacity of the hot pressing device 10 and making the hot pressing device 10 more efficient and shortening the production cycle during the production process.

[0052] In one embodiment, such as Figure 4 As shown, the oil supply mechanism 4 also includes a hydraulic drive module, which includes a high-pressure oil circuit L1 and a low-pressure oil circuit L2. The high-pressure oil circuit L1 and the low-pressure oil circuit L2 are respectively connected between the oil storage module 41 and the oil inlet a. The oil pressure of the high-pressure oil circuit L1 is greater than the oil pressure of the low-pressure oil circuit L2.

[0053] By setting up a high-pressure oil circuit L1 and a low-pressure oil circuit L2, oil can be supplied through different oil circuits. When the high-pressure oil circuit L1 and the low-pressure oil circuit L2 work simultaneously, each oil cylinder 5 can be rapidly lifted.

[0054] In one embodiment, such as Figure 3 As shown, the high-pressure oil circuit L1 includes a high-pressure pump 43 and a high-pressure relief valve 44. The oil inlet of the high-pressure pump 43 is connected to the oil storage module 41, and the oil outlet of the high-pressure pump 43 is connected to the oil inlet a. The high-pressure relief valve 44 is connected between the oil outlet of the high-pressure pump 43 and the oil storage module 41. The high-pressure relief valve 44 opens when the output oil pressure of the high-pressure pump 43 is higher than the first preset value.

[0055] The pressure value of the high-pressure pump 43 can be set by setting the high-pressure relief valve 44. When the output oil pressure of the high-pressure pump 43 is higher than the first preset value, the high-pressure relief valve 44 opens to reduce the oil pressure of the high-pressure pump 43. The specific value of the first preset value can be designed as needed and is not limited here.

[0056] In one embodiment, such as Figure 4 As shown, the high-pressure oil circuit L1 also includes a first pipeline and a pressure holding module 45. The first pipeline is connected between the oil outlet of the high-pressure pump 43 and the oil inlet a. The pressure holding module 45 is connected to the first pipeline and is used to supply oil to the flow divider valve 42 when the high-pressure pump 43 is turned off.

[0057] The pressure holding module 45 requires hydraulic fluid from the first pipeline. In the event of a power outage in the hydraulic system, the pressure holding module 45 can maintain a stable pressure in the hot pressing device 10.

[0058] In one embodiment, such as Figure 4 As shown, the low-pressure oil circuit L2 includes a low-pressure pump 46 and a low-pressure relief valve 47. The oil inlet of the low-pressure pump 46 is connected to the oil storage module 41, and the oil outlet of the low-pressure pump 46 is connected to the oil inlet a. The low-pressure relief valve 47 is connected between the oil outlet of the low-pressure pump 46 and the oil storage module 41. The low-pressure relief valve 47 opens when the output oil pressure of the low-pressure pump 46 is higher than the second preset value.

[0059] The system low pressure is set by configuring the low-pressure relief valve 47. When the output oil pressure of the low-pressure pump 46 is higher than the second preset value, the low-pressure relief valve 47 opens to reduce the oil pressure of the low-pressure pump 46. The specific value of the second preset value can be designed as needed, but it must be ensured that the second preset value is less than the first preset value, and no further restrictions are imposed here.

[0060] In one embodiment, the low-pressure oil circuit L2 further includes a second pipeline and a pressure relief valve. The second pipeline is connected between the oil outlet of the low-pressure pump 46 and the oil inlet a, and the pressure relief valve is connected between the second pipeline and the oil storage module 41.

[0061] When the pressure relief valve is opened, the output oil of the low-pressure pump 46 can flow back to the oil storage module 41 through the pressure relief valve. At this time, the low-pressure oil circuit L2 stops supplying oil to each cylinder 5, and only the high-pressure oil circuit L1 supplies oil to each cylinder 5, so as to realize the slow lifting of each cylinder 5.

[0062] In one embodiment, the first pipeline, the second pipeline, and the pressure relief valve are integrated into the same integrated control module 48 to improve the integration of the hot pressing device 10. Furthermore, other valves, such as check valves, solenoid directional valves, and electro-proportional speed control valves, can also be installed on the first and second pipelines as needed.

[0063] In one embodiment, such as Figure 4 As shown, the oil storage module 41 includes a high-pressure oil tank 411 and a low-pressure oil tank 412. High-pressure oil circuit L1 connects the high-pressure oil tank 411 to the oil inlet a, and low-pressure oil circuit L2 connects the low-pressure oil tank 412 to the oil inlet a. That is, the oil inlet of the high-pressure pump 43 is connected to the high-pressure oil tank 411, the high-pressure relief valve 44 connects the oil outlet of the high-pressure pump 43 to the high-pressure oil tank 411, the oil inlet of the low-pressure pump 46 connects to the low-pressure oil tank 412, and the low-pressure relief valve 47 connects the oil outlet of the low-pressure pump 46 to the low-pressure oil tank 412.

[0064] By setting up a high-pressure oil tank 411 and a low-pressure oil tank 412, the oil supply and return of each oil circuit can be realized respectively.

[0065] In one embodiment, such as Figure 4 As shown, the high-pressure oil tank 411 may include a first oil tank 4111 and a second oil tank 4112. The oil inlet of the high-pressure pump 43 is connected to the first oil tank 4111, and the high-pressure overflow valve 44 is connected between the oil outlet of the high-pressure pump 43 and the second oil tank 4112. Oil is supplied through the first oil tank 4111 and returned through the second oil tank 4112.

[0066] The low-pressure oil tank 412 may include a third oil tank 4121 and a fourth oil tank 4122. The oil inlet of the low-pressure pump 46 is connected to the third oil tank 4121, and the low-pressure overflow valve 47 is connected between the oil outlet of the low-pressure pump 46 and the fourth oil tank 4122. Oil is supplied through the third oil tank 4121 and returned through the fourth oil tank 4122.

[0067] In one embodiment, the oil storage module 41 may also include only one integrated oil tank, with the high-pressure oil circuit L1 and the low-pressure oil circuit L2 respectively connected between the single integrated oil tank and the oil inlet a, so as to realize the oil supply and return of each oil circuit through one integrated oil tank.

[0068] In one embodiment, the hot pressing device 10 further includes a pressure sensor (not shown), which is connected to any of the oil cylinders 5 and is used to detect the oil pressure of the oil cylinder 5 connected to it.

[0069] By setting up a pressure sensor to monitor and adjust the oil pressure of cylinder 5 in real time, the pressure stability during the lamination process is ensured.

[0070] In one embodiment, the pressure sensor may be integrated into the integrated control module 48 to improve the integration of the hot pressing device 10.

[0071] In one embodiment, multiple hydraulic cylinders 5 are arranged sequentially at intervals along the edge of the first hot press plate 2 to provide edge support for the first hot press plate 2, thereby making the pressure distribution more uniform during pressing.

[0072] In one embodiment, such as Figures 1 to 3 As shown, the frame 1 includes a first vacuum door 11, a second vacuum door 12, two side plates 13, and two horizontal plates 14. The two side plates 13 are spaced apart along a second direction x. The two horizontal plates 14 are spaced apart along a first direction z and are respectively connected to the two side plates 13. The first vacuum door 11 and the second vacuum door 12 are spaced apart along a third direction y. The first vacuum door 11 is connected to the two side plates 13 and the two horizontal plates 14, and a cavity is formed between the first vacuum door 11 and the two side plates 13 and the two horizontal plates 14.

[0073] The second vacuum door 12 is slidably connected between the two side plates 13, so that the second vacuum door 12 can slide between the closed position of the closed cavity and the open position of the fully open cavity.

[0074] Both the first hot press plate 2 and the second hot press plate 3 are disposed inside the cavity.

[0075] The second direction x and the third direction y are perpendicular to the first direction z.

[0076] The first vacuum door 11 of the frame 1 is connected to each side plate 13 and each of the two horizontal plates 14 by bolts. The cavity is closed or opened by sliding the second vacuum door 12 between the closed position and the open position. When the cavity is open, the material 20 can be placed into or taken out of the pressing space 101; when the cavity is closed, the material 20 in the pressing space 101 can be heat-pressed.

[0077] In one embodiment, such as Figures 1 to 3 As shown, the frame 1 also includes a vacuum chamber 15, one side of which is connected to two side plates 13 and two horizontal plates 14, and the other side of which is connected to a first vacuum door 11.

[0078] In one embodiment, the frame 1 further includes a door drive mechanism (not shown in the figure), which is installed between two side plates 13. The second vacuum door 12 is connected to the output end of the door drive mechanism so as to drive the second vacuum door 12 to slide between the closed position and the open position through the door drive mechanism.

[0079] The door panel drive mechanism can be selected to use a motor in conjunction with a belt to achieve its drive function.

[0080] In one embodiment, such as Figures 1 to 3 As shown, both the first hot press plate 2 and the second hot press plate 3 can be slidably connected to at least one side plate 13 along the first direction z to ensure the movement direction of each hot press plate.

[0081] In one embodiment, such as Figures 1 to 3 As shown, the hot pressing device 10 also includes a first heat insulation component 6 and a second heat insulation component 7. The first heat insulation component 6 is installed between the piston rod 51 of the oil cylinder 5 and the first hot pressing plate 2, and the second heat insulation component 7 is installed between the frame 1 and the second hot pressing plate 3.

[0082] By setting the first heat insulation component 6 and the second heat insulation component 7, the high temperature of the first hot press plate 2 and the second hot press plate 3 is prevented from being transferred to the frame 1 or the hydraulic cylinder 5, thereby avoiding structural strength and accuracy failure of the frame 1 or the hydraulic cylinder 5 due to high temperature. At the same time, the setting of the first heat insulation component 6 and the second heat insulation component 7 can also reduce the heat loss of the first hot press plate 2 and the second hot press plate 3.

[0083] In one embodiment, such as Figures 1 to 3 As shown, the hot pressing device 10 also includes a movable platform 8, and the piston rod 51 of each oil cylinder 5 is connected to the movable platform 8.

[0084] The first heat insulation component 6 is installed between the movable platform 8 and the first hot press plate 2.

[0085] Through the synchronous drive of each hydraulic cylinder 5, the movable platform 8 drives the first heat insulation component 6 and the first hot press plate 2 to move along the first direction z, so as to make each hot press plate move closer or further away from each other.

[0086] In one embodiment, such as Figures 1 to 3 As shown, the hot pressing device 10 also includes a third hot pressing plate 9, which is slidably connected to the frame 1 along the first direction z, and is disposed between the first hot pressing plate 2 and the second hot pressing plate 3 along the first direction z.

[0087] By setting a third hot press plate 9 between the first hot press plate 2 and the second hot press plate 3, the pressing space 101 can be divided into multiple subspaces 1011. Each subspace 1011 can press a material 20, thereby enabling the hot press device 10 to simultaneously press multiple materials 20.

[0088] In one embodiment, such as Figures 1 to 3 As shown, multiple third hot press plates 9 are provided, and the multiple third hot press plates 9 are spaced apart along the first direction z and located between the first hot press plate 2 and the second hot press plate 3.

[0089] The number of third hot press plates 9 can be adjusted according to actual needs. The more third hot press plates 9 there are, the more subspaces 1011 there are in the hot press device 10, and the more materials 20 can be hot-pressed simultaneously; conversely, the fewer the number of third hot press plates 9 there are, the fewer subspaces 1011 there are in the hot press device 10, and the fewer materials 20 can be hot-pressed simultaneously.

[0090] In one embodiment, the first hot press plate 2, the second hot press plate 3 and the third hot press plate 9 each include a plate body, and the plate body is provided with a liquid inlet, a liquid outlet and a flow channel, with the flow channel connecting the liquid inlet and the liquid outlet.

[0091] At least one of the first hot press plate 2, the second hot press plate 3, and the third hot press plate 9 further includes a heating element for heating the corresponding plate body. Understandably, when the first hot press plate 2 further includes a heating element, the heating element of the first hot press plate 2 is used to heat the plate body of the first hot press plate 2; when the second hot press plate 3 further includes a heating element, the heating element of the second hot press plate 3 is used to heat the plate body of the second hot press plate 3; and when the third hot press plate 9 further includes a heating element, the heating element of the third hot press plate 9 is used to heat the plate body of the third hot press plate 9.

[0092] by Figure 5Taking the first hot press plate 2 as an example, the first hot press plate 2 includes a plate body 21 and a heating element 22. The plate body 21 is provided with a liquid inlet 211, a liquid outlet 212, and a flow channel 213, which connects the liquid inlet 211 and the liquid outlet 212. The heating element 22 of the first hot press plate 2 is used to heat the plate body 21 of the first hot press plate 2.

[0093] By employing highly efficient heating elements, uniform heating is ensured to meet the requirements of high-temperature lamination. The heating system is linked with the pressure control system to ensure optimal temperature and pressure coordination during the lamination process.

[0094] In one embodiment, such as Figure 5 As shown, the heating element is an electric heating tube, which achieves rapid heating through electrical control.

[0095] In one embodiment, the hot press further includes a third pipeline, a fourth pipeline, a liquid supply mechanism, and a cooling mechanism (not shown in the figure). The liquid supply mechanism is provided with a medium outlet and a medium inlet. The third pipeline is connected between the liquid inlet and the medium outlet, and the fourth pipeline is connected between the liquid outlet and the medium inlet.

[0096] The cooling mechanism is located in the fourth pipe and is used to cool the heat transfer medium in the fourth pipe.

[0097] The cooling mechanism can be selected from water cooling, oil cooling, or other suitable cooling methods according to actual needs. This cooling mechanism cools the heat-conducting medium in the second pipeline, enabling it to reduce the equipment temperature to a safe range in a short time, avoiding the slow cooling speed problem of traditional electric heating hot press devices, thereby improving equipment production efficiency.

[0098] The system features rapid cooling, quickly reducing temperature after lamination and improving production efficiency. Multiple cooling methods are available, allowing users to choose the appropriate method based on their specific needs.

[0099] The working principle of the hot pressing device 10 provided in this embodiment of the utility model is as follows:

[0100] (a) Preparation stage, such as Figure 1 and Figure 2 As shown, the piston rod 51 of the oil cylinder 5 is not extended. Since the flow channels of each hot press plate inside the hot press device 10 have not been filled with high-temperature heat-conducting medium, the temperature of the oil cylinder 5 and the frame 1 is below 120 degrees Celsius.

[0101] (ii) Work phase, such as Figure 3As shown, when the hot pressing device 10 is working, the material 20 is placed on the hot pressing plate. At this time, the piston rod 51 of the oil cylinder 5 extends upward under the drive of the oil supply mechanism 4 until each hot pressing plate is in contact with the adjacent material 20, and the oil cylinder 5 reaches the system set pressure value. While the oil cylinder 5 is pressurizing, the hot pressing plate is heated by the heat-conducting medium flowing inside it. The cavity of the hot pressing device 10 forms a low vacuum, high temperature, and high pressure environment under the action of the vacuum pump. The material 20 undergoes a chemical cross-linking reaction inside the hot pressing device 10, realizing the tight bonding between the resin and copper foil in the material 20.

[0102] When the hydraulic cylinder 5 is rapidly lifted, the low-pressure pump 46 and the high-pressure pump 43 work simultaneously.

[0103] When the hydraulic cylinder 5 is slowly lifted, the low-pressure pump 46 releases pressure through the pressure relief valve in the integrated control module 48, and the high-pressure pump 43 operates normally.

[0104] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hot pressing device, characterized in that, It includes a frame, a first hot press plate, a second hot press plate, an oil supply mechanism, and multiple oil cylinders. The first hot press plate and the second hot press plate are spaced apart on the frame along a first direction. The oil cylinders are used to drive the first hot press plate to move closer to or away from the second hot press plate along the first direction. The oil supply mechanism includes an oil storage module and a flow-dividing valve. The oil storage module is used to store oil. The flow-dividing valve has a valve chamber and an oil inlet and multiple oil outlets connected to the valve chamber. The oil inlet is connected to the oil storage module, and each of the oil outlets is connected to each of the oil cylinders in a one-to-one correspondence. The flow-dividing valve is used to distribute the oil entering the valve chamber from the oil inlet to each of the oil outlets at an equal flow rate.

2. The hot pressing device according to claim 1, characterized in that, The oil supply mechanism also includes a hydraulic drive module, which includes a high-pressure oil circuit and a low-pressure oil circuit. The high-pressure oil circuit and the low-pressure oil circuit are respectively connected between the oil storage module and the oil inlet. The oil pressure of the high-pressure oil circuit is greater than the oil pressure of the low-pressure oil circuit.

3. The hot pressing device according to claim 2, characterized in that, The high-pressure oil circuit includes a high-pressure pump and a high-pressure relief valve. The oil inlet of the high-pressure pump is connected to the oil storage module, and the oil outlet of the high-pressure pump is connected to the oil inlet. The high-pressure relief valve is connected between the oil outlet of the high-pressure pump and the oil storage module. The high-pressure relief valve opens when the output oil pressure of the high-pressure pump is higher than a first preset value.

4. The hot pressing device according to claim 3, characterized in that, The high-pressure oil circuit also includes a first pipeline and a pressure-holding module. The first pipeline is connected between the oil outlet of the high-pressure pump and the oil inlet. The pressure-holding module is connected to the first pipeline and is used to supply oil to the flow divider valve when the high-pressure pump is turned off.

5. The hot pressing device according to claim 2, characterized in that, The low-pressure oil circuit includes a low-pressure pump and a low-pressure relief valve. The oil inlet of the low-pressure pump is connected to the oil storage module, the oil outlet of the low-pressure pump is connected to the oil inlet, and the low-pressure relief valve is connected between the oil outlet of the low-pressure pump and the oil storage module. The low-pressure relief valve opens when the output oil pressure of the low-pressure pump is higher than a second preset value.

6. The hot pressing device according to claim 5, characterized in that, The low-pressure oil circuit also includes a second pipeline and a pressure relief valve. The second pipeline is connected between the oil outlet of the low-pressure pump and the oil inlet, and the pressure relief valve is connected between the second pipeline and the oil storage module. When the pressure relief valve is opened, the output oil of the low-pressure pump can flow back to the oil storage module through the pressure relief valve.

7. The hot pressing device according to claim 2, characterized in that, The oil storage module includes a high-pressure oil tank and a low-pressure oil tank. The high-pressure oil circuit is connected between the high-pressure oil tank and the oil inlet, and the low-pressure oil circuit is connected between the low-pressure oil tank and the oil inlet.

8. The hot pressing device according to claim 1, characterized in that, The hot pressing device also includes a pressure sensor, which is connected to any of the oil cylinders and is used to detect the oil pressure of the oil cylinder connected to it.

9. The hot pressing device according to claim 1, characterized in that, The plurality of hydraulic cylinders are arranged sequentially at intervals along the edge of the first hot press plate.

10. A hot press, characterized in that, The hot pressing device includes any one of claims 1-9, wherein the frame includes a first vacuum door, a second vacuum door, two side plates, and two horizontal plates, the two side plates being spaced apart along a second direction; the two horizontal plates being spaced apart along a first direction and respectively connected to the two side plates; the first vacuum door and the second vacuum door being spaced apart along a third direction, the first vacuum door being connected to the two side plates and the two horizontal plates, and a cavity being formed between the first vacuum door and the two side plates and the two horizontal plates; The second vacuum door is slidably connected between the two side plates, so that the second vacuum door can slide between a closed position that closes the cavity and an open position that fully opens the cavity; Both the first hot press plate and the second hot press plate are disposed within the cavity; The second direction and the third direction are perpendicular to the first direction.

11. The hot press according to claim 10, characterized in that, Both the first hot press plate and the second hot press plate can be slidably connected to at least one of the side plates along the first direction.

12. The hot press according to claim 10, characterized in that, The hot pressing device further includes a first heat insulation component and a second heat insulation component. The first heat insulation component is installed between the piston rod of the oil cylinder and the first hot pressing plate, and the second heat insulation component is installed between the frame and the second hot pressing plate.

13. The hot press according to claim 12, characterized in that, The hot pressing device also includes a movable platform, and the piston rods of each of the oil cylinders are respectively connected to the movable platform; The first heat insulation component is installed between the movable platform and the first hot press plate.

14. The hot press according to claim 10, characterized in that, The hot pressing device further includes a third hot pressing plate, which is slidably connected to the frame along the first direction and is disposed between the first hot pressing plate and the second hot pressing plate along the first direction.

15. The hot press according to claim 14, characterized in that, Multiple third hot press plates are provided, and the multiple third hot press plates are spaced apart along the first direction and located between the first hot press plate and the second hot press plate.

16. The hot press according to claim 14, characterized in that, The first hot press plate, the second hot press plate and the third hot press plate all include a plate body, and the plate body is provided with a liquid inlet, a liquid outlet and a flow channel, and the flow channel is connected between the liquid inlet and the liquid outlet; At least one of the first hot press plate, the second hot press plate, and the third hot press plate further includes a heating element, which is used to heat the corresponding plate body.

17. The hot press according to claim 16, characterized in that, The hot press also includes a third pipeline, a fourth pipeline, a liquid supply mechanism, and a cooling mechanism. The liquid supply mechanism is provided with a medium outlet and a medium inlet. The third pipeline connects the liquid inlet and the medium outlet, and the fourth pipeline connects the liquid outlet and the medium inlet. The cooling mechanism is disposed in the fourth pipeline, and the cooling mechanism is used to cool the heat-conducting medium in the fourth pipeline.

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