Hot pressing machine for producing aluminum-based copper-clad plate

Abstract

The invention relates to the technical field of lamination, in particular to a thermocompression bonding machine for aluminum-based copper-clad plate production, which comprises a rack, an electric double-opening sliding door, a driving assembly, a fixed plate and the like, the left side and the right side of the machine frame are each provided with an electric double-opening sliding door. The rack is connected with a driving assembly; the driving assembly is connected with two fixing plates which are symmetrical left and right; the driving assembly drives the fixing plate to move left and right and rotate. The aluminum-based copper-clad plate is driven by the first driving part to move into the buffer cavity for cooling operation, so that the cooling operation and the pressing operation of the aluminum-based copper-clad plate are performed separately, and after the cooling operation is completed, the feeding operation of a new batch of pre-laminated plates is performed, so that the time required for the feeding preparation of the pre-laminated plates can be shortened, and the feeding efficiency of the pre-laminated plates is improved. And the pressing plate can continuously perform pressing operation, so that the pressing efficiency of the aluminum-based copper-clad plate is improved, and the production efficiency of the aluminum-based copper-clad plate is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hot pressing machines, and particularly to a hot pressing machine for the production of aluminum-based copper clad laminates. Background Art

[0002] As a filling structure for a new type of composite thermal insulation wall, the aluminum-based copper clad laminate can achieve dynamic thermal management of building envelopes by actively adjusting the temperature of the board due to its excellent thermal conductivity. This active temperature control mechanism can not only maintain the stability of the internal thermal environment of the workshop, but also significantly reduce the load change of the air conditioning system caused by environmental temperature fluctuations. Combined with the electromagnetic shielding layer formed by the copper clad layer, while achieving electromagnetic compatibility management in the workshop, the thermal conduction advantage of this material enables the air conditioning system to operate under steady-state conditions, reducing the cooling / heating energy consumption by about 20%-30% compared with traditional passive thermal insulation materials. This dual-functional characteristic makes the aluminum-based copper clad laminate particularly suitable for the electronic clean workshop environment that requires precise temperature control and electromagnetic shielding. The conventional processing process of the aluminum-based copper clad laminate is as follows: first, the copper foil, prepreg, and aluminum plate are pre-laminated to form a pre-laminated board, then the pre-laminated board and the steel plate are cross-laminated and placed on the carrier board, and then they are sent into the hot pressing machine together. The pressing plate of the hot pressing machine applies pressure to the pre-laminated board, and at the same time, the heating plate in the pressing plate heats up the pre-laminated board, so that the prepreg in the pre-laminated board first melts and then cross-links and cures under high temperature and high pressure, making the copper foil and the aluminum plate closely adhere to each other, thereby forming the aluminum-based copper clad laminate. Then, the heating plate in the pressing plate is cooled by the cooling system of the hot pressing machine, and then the aluminum-based copper clad laminate is cooled by the pressing plate. The pressing time and the cooling time required for the conventional aluminum-based copper clad laminate are usually both more than half an hour, and the cooling operation needs to rely on the cooperation of the pressing plate to complete. Therefore, the cooling operation needs to occupy the pressing plate of the hot pressing machine for a long time, thereby reducing the pressing operation frequency of the pressing plate, and further reducing the production efficiency of the aluminum-based copper clad laminate.

[0003] In summary, the present application proposes a hot pressing machine for the production of aluminum-based copper clad laminates to improve the above-mentioned technical problems. Summary of the Invention

[0004] In order to overcome the defect that in the production process of the aluminum-based copper clad laminate, the cooling operation needs to occupy the pressing plate of the hot press for a long time, thereby reducing the usage frequency of the pressing plate and further reducing the production efficiency of the aluminum-based copper clad laminate, the present invention provides a hot pressing machine for the production of aluminum-based copper clad laminates.

[0005] The technical solution is as follows: A hot press for the production of aluminum-based copper clad laminates includes a frame and an electric double-opening sliding door; an electric double-opening sliding door is installed on each of the left and right sides of the frame; it also includes a driving component, a fixing plate, a sliding frame, a bearing plate, a telescopic support, a sliding plate, and an auxiliary cooling system; a driving component is connected to the frame; two symmetric fixing plates are connected to the driving component; the fixing plates are driven by the driving component to move left and right and rotate; a number of sliding frames are slidably connected to each fixing plate; a bearing plate for carrying steel plates and pre-laminated plates is slidably connected to each sliding frame; a telescopic support is installed on each fixing plate; the telescopic support is connected to all the sliding frames; a number of sliding plates are slidably connected to the middle of the frame; adjacent two sliding plates are slidably connected by a linkage rod; except for the lowermost sliding plate, a pressing plate is installed on each sliding plate, and a heating plate is fixedly connected to the inside of each pressing plate; an auxiliary cooling system for cooling the aluminum-based copper clad laminate is installed inside the frame.

[0006] Preferably, the driving component includes a slide rail, an electric slider, a first connecting plate, a rotating plate, a motor, a second connecting plate, a first driving member, and a second driving member; a number of slide rails are fixedly connected to the left and right sides of the frame; an electric slider is slidably connected to each slide rail; a first connecting plate is fixedly connected to each electric slider; two first connecting plates on the left jointly rotatably connect a rotating plate; two first connecting plates on the right also jointly rotatably connect a rotating plate; a motor is fixedly connected to each of the two upper first connecting plates; the output end of each motor is fixedly connected to the adjacent rotating plate; a second connecting plate is slidably connected to each rotating plate; each second connecting plate and the adjacent fixing plate are fixedly connected by two fixing rods, and the fixing rods penetrate through the adjacent electric double-opening sliding door; a first driving member is fixedly connected to each rotating plate; the telescopic end of each first driving member is fixedly connected to the corresponding second connecting plate; a second driving member is fixedly connected to the frame; the telescopic end of the second driving member is fixedly connected to the uppermost sliding plate.

[0007] Preferably, the auxiliary cooling system includes a first electric control lifting door and a second electric control lifting door; a number of symmetric first electric control lifting doors are installed on the upper side of the frame; the first electric control lifting door penetrates through the upper side of the frame; a number of symmetric second electric control lifting doors are installed on the lower side of the frame; the second electric control lifting door penetrates through the lower side of the frame; both the first electric control lifting door and the second electric control lifting door slide in the vertical direction; inside the frame, the cavity between the left and right first electric control lifting doors is the hot pressing cavity; inside the frame, the cavity between the first electric control lifting door and the adjacent electric double-opening sliding door is the buffer cavity.

[0008] Preferably, a number of ventilation holes are evenly opened at the edge parts of the four sides of each bearing plate; a side plate is fixedly connected to each of the four sides of each bearing plate; the four side plates jointly form a closed structure; the ventilation holes are located inside the side plates.

[0009] Preferably, the auxiliary cooling system further includes ventilation plates; a ventilation plate for cooling the buffer cavity is fixedly connected to each first electric control lifting door; two symmetrically arranged ventilation plates are also slidably connected to the lower side of the frame; the upper ventilation plates are aligned with the lower ventilation plates; the ventilation plates are all located in the corresponding buffer cavities; a rectangular groove is formed in each ventilation plate; the contour size of the rectangular groove is consistent with the layout size of the ventilation holes; a ventilation pipe is fixedly connected in each rectangular groove; the ventilation pipe is of an annular closed structure, and a plurality of exhaust holes are formed in the ventilation pipe; all the ventilation pipes are connected to the air outlet of the external gas temperature control device; a protruding block is fixedly connected to the lower side of each second electric control lifting door; a limiting plate is fixedly connected to the lower side of the ventilation plates located at the lower side; each protruding block is aligned with the middle of the corresponding limiting plate.

[0010] Preferably, both the bearing plate and the side plates are made of copper-chromium alloy material with high pressure resistance, high temperature resistance and good thermal conductivity.

[0011] Preferably, the auxiliary cooling system further includes a sealing ring; a sealing ring is fixedly connected to the four side plates of the bearing plate together.

[0012] Preferably, it further includes an exhaust pipe; an exhaust pipe for improving the pressing quality of the aluminum-based copper clad laminate is fixedly connected in each sliding plate; all the exhaust pipes are communicated with the external exhaust device; the air inlet of the exhaust pipe is located at the edge part of the pressing plate.

[0013] Preferably, it further includes positioning blocks; a plurality of positioning blocks for limiting the steel plate are inserted into each side plate of the bearing plate; the pressing plate is connected to the sliding plate through detachable bolts.

[0014] Preferably, the sealing ring is made of FFKM perfluororubber with good high temperature resistance, compressive resistance and elasticity, and its working temperature range is -30°C to 325°C.

[0015] Advantages of the present invention: Compared with the conventional hot pressing device, after the aluminum-based copper clad laminate is pressed, the first driving member drives the aluminum-based copper clad laminate to move into the buffer cavity for cooling, so that the cooling operation and the pressing operation of the aluminum-based copper clad laminate are separated. And after the cooling operation is completed, the feeding operation of a new batch of pre-laminated plates is carried out. In this way, the time required for the feeding preparation of the pre-laminated plates can be reduced, and the pressing plate can continuously carry out the pressing operation, thereby improving the pressing efficiency of the aluminum-based copper clad laminate and further improving the production efficiency of the aluminum-based copper clad laminate; By separating the buffer cavity and the hot pressing cavity, while cooling the aluminum-based copper clad laminate, the heat loss in the hot pressing cavity can be avoided, so that the temperature in the hot pressing cavity always remains consistent, ensuring the pressing quality of the aluminum-based copper clad laminate; Compared with the conventional method of evacuating the hot pressing cavity, evacuating the temporary sealing cavity can quickly discharge the gas, thereby improving the vacuum degree, further enhancing the thermal conductivity of the aluminum-based copper clad laminate, and thus improving the heat insulation performance of the composite insulation wall. The positioning blocks limit the four peripheral edges of the steel plate, preventing the steel plate from shifting horizontally. This avoids the phenomenon that all the pre-laminated plates on the bearing plate undergo interlayer slippage after one of the pre-laminated plates experiences interlayer slippage, thereby improving the yield rate of the aluminum-based copper clad laminate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic three-dimensional structure diagram of the hot press for producing the aluminum-based copper clad laminate of the present invention; Figure 2 Cross-sectional view of the frame of the present invention; Figure 3 Schematic diagram of the feeding state of the bearing plate of the present invention; Figure 4 Schematic three-dimensional structure diagram of the combination of the driving component and the fixing plate of the present invention; Figure 5 Schematic diagram of the sealed state of the hot pressing cavity and the buffer cavity of the present invention; Figure 6 Schematic three-dimensional structure diagram of the combination of the frame and the sliding plate of the present invention; Figure 7 Schematic three-dimensional structure diagram of the combination of the sliding plate and the pressing plate of the present invention; Figure 8 Schematic diagram of the pressing state of the pressing plate of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of area A in Figure 10 Schematic three-dimensional structure diagram of the combination of the fixing plate, the sliding frame and the telescopic bracket of the present invention; Figure 11 Schematic three-dimensional structure diagram of the combination of the bearing plate and the positioning block of the present invention; Figure 12 Schematic three-dimensional structure diagram of the auxiliary cooling system of the present invention; Figure 13 Schematic three-dimensional structure diagram of the ventilation plate of the present invention; Figure 14 Schematic diagram of the cooling working state of the present invention; Figure 15 Schematic three-dimensional structure diagram of the combination of the steel plate and the pre-laminated plate of the present invention.

[0017] Description of reference numerals: 1 - frame, 1001 - hot pressing cavity, 1002 - buffer cavity, 2 - electric double-opening sliding door, 3 - fixing plate, 4 - sliding carriage, 5 - bearing plate, 5001 - vent hole, 5002 - side plate, 6 - telescopic support, 7 - sliding plate, 7001 - pressing plate, 8 - steel plate, 9 - pre-laminated plate, 201 - slide rail, 202 - electric slider, 203 - first connecting plate, 204 - rotating plate, 205 - motor, 206 - second connecting plate, 207 - first driving member, 208 - second driving member, 301 - first electric control lifting door, 302 - second electric control lifting door, 30201 - protruding block, 303 - vent plate, 30301 - rectangular groove, 30302 - ventilation pipe, 30303 - limiting plate, 304 - sealing ring, 401 - air extraction pipe, 402 - positioning block. Detailed implementation mode

[0018] The present invention will be further described below in conjunction with the accompanying drawings and the detailed implementation mode.

[0019] Example 1: Refer to Figures 1 - 15 As shown, a hot press for producing aluminum-based copper clad laminates includes a frame 1 and an electric double-opening sliding door 2; an electric double-opening sliding door 2 is installed on each of the left and right sides of the frame 1; the electric double-opening sliding door 2 is composed of a guide rail, two linear sliders and two door panels; the linear sliders move back and forth on the guide rail, thereby driving the door panels to move back and forth. It also includes a driving assembly, a fixing plate 3, a sliding carriage 4, a bearing plate 5, a telescopic support 6, a sliding plate 7 and an auxiliary cooling system; a driving assembly is connected to the frame 1; two symmetrically arranged fixing plates 3 are connected to the driving assembly; the driving assembly drives the fixing plate 3 to move left and right and rotate; six sliding carriages 4 are slidably connected to each fixing plate 3; a bearing plate 5 is slidably connected to each sliding carriage 4; the size of the pre-laminated plate 9 is smaller than that of the steel plate 8, and the pre-laminated plate 9 is formed by stacking copper foil, semi-cured sheet and aluminum plate; a telescopic support 6 is installed on each fixing plate 3; the telescopic support 6 is connected to all the sliding carriages 4; seven sliding plates 7 are slidably connected to the middle part of the frame 1; adjacent two sliding plates 7 are slidably connected by a linkage rod; except for the lowermost sliding plate 7, a pressing plate 7001 is installed on each sliding plate 7, and a heating plate is fixedly connected inside each pressing plate 7001; an auxiliary cooling system is installed inside the frame 1; the aluminum-based copper clad laminate is cooled by the auxiliary cooling system.

[0020] The driving assembly includes a slide rail 201, an electric slider 202, a first connecting plate 203, a rotating plate 204, a motor 205, a second connecting plate 206, a first driving member 207 and a second driving member 208; two upper and lower symmetric slide rails 201 are fixedly connected to the left and right sides of the frame 1; an electric slider 202 is slidably connected to each slide rail 201; a first connecting plate 203 is fixedly connected to each electric slider 202; two first connecting plates 203 on the left side jointly rotatably connect a rotating plate 204; two first connecting plates 203 on the right side also jointly rotatably connect a rotating plate 204; a motor 205 is fixedly connected to each of the two upper first connecting plates 203; the output end of each motor 205 is fixedly connected to the adjacent rotating plate 204; a second connecting plate 206 is slidably connected to the side of each rotating plate 204 away from the frame 1; each second connecting plate 206 is fixedly connected to the adjacent fixing plate 3 by two fixing rods, and the fixing rods penetrate through the adjacent electric double-opening sliding door 2; a first driving member 207 is fixedly connected to the middle of each rotating plate 204, and the first driving member 207 is an electric push rod; the telescopic end of each first driving member 207 is fixedly connected to the corresponding second connecting plate 206; a second driving member 208 is fixedly connected to the middle of the frame 1, and the second driving member 208 is an electric push rod; the telescopic end of the second driving member 208 is fixedly connected to the uppermost sliding plate 7.

[0021] The auxiliary cooling system includes a first electric control lifting door 301 and a second electric control lifting door 302; two left and right symmetric first electric control lifting doors 301 are installed on the upper side of the frame 1; the first electric control lifting door 301 penetrates through the upper side of the frame 1; two left and right symmetric second electric control lifting doors 302 are installed on the lower side of the frame 1; the second electric control lifting door 302 penetrates through the lower side of the frame 1; both the first electric control lifting door 301 and the second electric control lifting door 302 are composed of a guide rail, a linear slider and a door panel; by the linear slider moving up and down in the guide rail, the door panel is driven to move up and down; inside the frame 1, the cavity located between the two first electric control lifting doors 301 on the left and right sides is a hot pressing cavity 1001; inside the frame 1, the cavity located between the first electric control lifting door 301 and the adjacent electric double-opening sliding door 2 is a buffer cavity 1002.

[0022] Furthermore, to improve the cooling effect on the aluminum-based copper clad laminate and thus improve the quality of the aluminum-based copper clad laminate, a number of ventilation holes 5001 are evenly opened at the peripheral edge parts of each bearing plate 5; a side plate 5002 is fixedly connected to each of the four sides of each bearing plate 5; the four side plates 5002 jointly form a closed structure; the ventilation holes 5001 are located inside the side plates 5002.

[0023] The auxiliary cooling system further includes a ventilation plate 303; a ventilation plate 303 is fixedly connected to the lower side of each first electric control lifting door 301; two symmetric ventilation plates 303 are also slidably connected to the lower side of the frame 1; the upper ventilation plate 303 is aligned with the lower ventilation plate 303; the ventilation plates 303 are all located in the corresponding buffer cavities 1002; a rectangular groove 30301 is formed in each ventilation plate 303; the contour dimension of the rectangular groove 30301 is consistent with the layout dimension of the ventilation holes 5001; a ventilation pipe 30302 is fixedly connected in each rectangular groove 30301; the ventilation pipe 30302 is of an annular closed structure, and a number of exhaust holes are formed in the ventilation pipe 30302; all the ventilation pipes 30302 are connected to the air outlet of an external gas temperature control device; a protruding block 30201 is fixedly connected to the lower side of each second electric control lifting door 302; a limiting plate 30303 is fixedly connected to the lower side of the lower ventilation plate 303; each protruding block 30201 is aligned with the middle of the corresponding limiting plate 30303.

[0024] Furthermore, to extend the service life of the bearing plate 5 and improve the heat uniformity of the pre-laminated plate 9 at the same time, both the bearing plate 5 and the side plate 5002 are made of copper-chromium alloy material with high pressure resistance, high temperature resistance and good thermal conductivity.

[0025] The auxiliary cooling system further includes a sealing ring 304; a sealing ring 304 is fixedly connected to the four side plates 5002 of the bearing plate 5 together.

[0026] To solve the above problems, the following describes the lamination operation and cooling operation of the aluminum-based copper clad laminate in detail: Before the lamination operation, the lamination operation needs to be carried out first. Place the bearing plate 5 on the operation platform of the external lamination mechanism. Through the external lamination mechanism, the steel plate 8 and the pre-laminated plate 9 are cross-laminated at the center of the bearing plate 5. At the same time, at this time, the fixing plate 3 is located outside the frame 1, and the first driving member 207 is in the extended state. Taking the top-down view as the reference, control the left motor 205 to drive the adjacent rotating plate 204 and its connecting parts to rotate clockwise by 90 degrees, and control the right motor 205 to drive the adjacent rotating plate 204 and its connecting parts to rotate counterclockwise by 90 degrees, so that the fixing plates 3 and the sliding frames 4 on both the left and right sides face the front side, as Figure 3 shown, and then insert the bearing plate 5 equipped with the steel plate 8 and the pre-laminated plate 9 into the sliding frame 4 in sequence through the external feeding structure (such as a mechanical claw), so as to complete the feeding operation of the bearing plate 5. It should be noted that the size of the bearing plate 5 needs to be larger than the size of the steel plate 8 to ensure that the entire steel plate 8 is supported by the bearing plate 5.

[0027] Subsequently, perform the preparatory operations before lamination. Control the motor 205 to drive the rotating plate 204 and its connecting parts to reset. Then control the electric double-opening sliding doors 2 on both the left and right sides to open. Control the electric slider 202 to move towards the center side of the frame 1 on the corresponding slide rail 201, thereby driving the first connecting plate 203, rotating plate 204, and connecting parts on the left side to move to the right, and the first connecting plate 203, rotating plate 204, and connecting parts on the right side to move to the left, so that the fixed plates 3, carriage racks 4, and bearing plates 5 on both the left and right sides all enter the range of the corresponding buffer cavities 1002 of the frame 1. Then control the two electric double-opening sliding doors 2 to close. At this time, the fixing rod on the second connecting plate 206 penetrates through the adjacent electric double-opening sliding door 2, and at this time, both the first electric control lifting door 301 and the second electric control lifting door 302 are in the open state, and the hot pressing cavity 1001 is communicated with the buffer cavity 1002. Control the telescopic end of the first driving member 207 on the right side to contract, thereby driving the second connecting plate 206 on the right side to move to the left, so that the fixed plate 3 and its connecting parts on the right side move further to the left, and the fixed plate 3, carriage rack 4, and bearing plate 5 on the right side enter the hot pressing cavity 1001. It should be noted here that the telescopic bracket 6 is initially in the extended state to ensure that the distance between the bottom surfaces of two adjacent bearing plates 5 is the same as the distance between the top surfaces of the corresponding two sliding plates 7, so as to facilitate the insertion of the bearing plate 5 between the corresponding two sliding plates 7. As the fixed plate 3 on the right side continues to move to the left, the carriage rack 4 and the bearing plate 5 are inserted between the corresponding two sliding plates 7, and the lower side of the bearing plate 5 is attached to the corresponding sliding plate 7. The center of the bearing plate 5 is aligned with the pressing plate 7001 on the upper sliding plate 7, and control the heating plate in the pressing plate 7001 to start heating. In this way, the preparatory operations before lamination are completed.

[0028] Subsequently, a lamination operation is performed. The specific steps are as follows: Control the second driving member 208 to drive the uppermost slide plate 7 to continuously move downward, so that the uppermost pressing plate 7001 fits with the steel plate 8 carried in the uppermost bearing plate 5. Subsequently, drive the uppermost bearing plate 5 and the second uppermost slide plate 7 downward, so that the pressing plate 7001 on the second uppermost slide plate 7 fits with the steel plate 8 of the corresponding bearing plate 5, and so on, until the lowermost slide plate 7 fits with the bottom of the hot pressing cavity 1001, so that the pressing plate 7001 on each slide plate 7 fits with the steel plate 8 on the corresponding bearing plate 5. During this process, the distance between two adjacent bearing plates 5 gradually decreases, and the telescopic support 6 adapts to contract. Then, control the telescopic end of the second driving member 208 to continue to extend, so that the pressure applied downward by the slide plate 7 gradually increases, so as to apply pressure to the steel plate 8 and the prepreg 9 in the bearing plate 5 through the pressing plate 7001. At the same time, heat the steel plate 8 and the prepreg 9 through the heating plate in the pressing plate 7001, so that the temperature of the prepreg 9 gradually rises to 200 °C. In this way, the semi-cured sheet in the prepreg 9 first melts and then crosslinks and cures under high temperature and high pressure to form an aluminum-based copper clad laminate. Subsequently, control the second driving member 208 to drive the uppermost slide plate 7 to continuously move upward, and the remaining slide plates 7 move upward under the drive of the linkage rod, so that the slide plate 7 returns to the initial position, and at the same time, the pressing plate 7001 is separated from the steel plate 8 on the corresponding bearing plate 5, and the bearing plate 5 returns to the initial position under the drive of the slide plate 7, and the telescopic support 6 is reset, thus completing the lamination operation.

[0029] Subsequently, a cooling operation is performed. Control the first driving member 207 on the right to drive the right fixing plate 3 and its connecting parts to move to the right, so that the bearing plate 5 on the slide plate 7 moves to the right into the right buffer cavity 1002. Then, control the first electric sliding door 301 on the right to move downward, and control the second electric sliding door 302 on the right to move upward until the first electric sliding door 301 on the right and the second electric sliding door 302 on the right fit with each other. At this time, the right buffer cavity 1002 is in a sealed state. At this time, the buffer cavity 1002 can be cooled by inputting low-temperature gas into the right buffer cavity 1002, so that the aluminum-based copper clad laminate inside gradually cools down. However, considering that after the buffer cavity 1002 cools down, when the first electric sliding door 301 and the second electric sliding door 302 are opened, the hot air in the hot pressing cavity 1001 easily flows into the buffer cavity 1002, resulting in heat loss in the hot pressing cavity 1001, which is not conducive to subsequent lamination operations. Therefore, as Figure 14As shown, when the first electric control sliding door 301 moves downward, it synchronously drives the upper ventilation plate 303 to move downward, causing the upper ventilation plate 303 to press downward on the bearing plate 5, thereby causing the bearing plate 5 and the sliding frame 4 to move downward. The telescopic bracket 6 expands and contracts adaptively, so that the side plate 5002 of the lower bearing plate 5 fits against the bottom of the upper bearing plate 5. At the same time, the upper ventilation plate 303 fits against the bottom of the uppermost bearing plate 5. At the same time, when the second electric control sliding door 302 moves upward, it synchronously drives the protruding block 30201 to press upward on the limiting plate 30303 of the lower ventilation plate 303, causing the lower ventilation plate 303 to fit against the bottom of the lowermost bearing plate 5, and the rectangular groove 30301 communicates with the inside of the lowermost bearing plate 5. At the same time, the interiors of two adjacent bearing plates 5 are communicated through the ventilation holes 5001. The external gas temperature control device is controlled to transport low-temperature gas into the lower ventilation pipe 30302, so that the low-temperature gas enters the corresponding rectangular groove 30301. Subsequently, the low-temperature gas enters the lowermost bearing plate 5 through the lowermost ventilation hole 5001, and then is blown into the upper bearing plate 5 through the upper ventilation hole 5001. It enters the rectangular groove 30301 of the upper ventilation plate 303 from the uppermost bearing plate 5, and finally the low-temperature air flow returns to the external gas temperature control device through the upper ventilation pipe 30302. In this way, by overlapping the bearing plates 5, an independent sealed space is formed between the bearing plates 5 and the upper and lower ventilation plates 303, so that the aluminum-based copper clad laminate is cooled in the independent sealed space, thereby avoiding the heat loss of the subsequent hot pressing cavity 1001 caused by the temperature drop in the buffer cavity 1002 and ensuring the pressing quality of the aluminum-based copper clad laminate. Moreover, during the cooling process, gradient cooling is usually adopted. As the temperature of the aluminum-based copper clad laminate drops, the cooling rate can gradually increase. Compared with the low-temperature air flow flowing through the entire buffer cavity 1002, restricting the space through which the low-temperature air flow flows to the inside of the bearing plate 5 can more effectively control the cooling rate, thereby ensuring the quality of the aluminum-based copper clad laminate. It should be noted here that the temperature of the flowing low-temperature gas can be controlled by the external gas temperature control device, so that the cooling rate can be dynamically adjusted, avoiding the accumulation of internal stress caused by the too rapid temperature drop of the aluminum-based copper clad laminate, and further avoiding the situation where when the aluminum-based copper clad laminate is used as the filling structure of the composite insulation wall, the deformation caused by the accumulation of internal stress leads to a decrease in the insulation performance of the wall.

[0030] While the aluminum-based copper clad laminate in the right load-bearing plate 5 is being cooled down, the first driving member 207 on the left is controlled to drive the fixing plate 3 on the left and its connecting parts to move to the right, so that the left load-bearing plate 5 enters the hot pressing cavity 1001, and the prepreg 9 in the left load-bearing plate 5 is pressed by the pressing plate 7001. After the temperature of the aluminum-based copper clad laminate on the right gradually drops to 60 °C, the cooling rate does not need to be controlled. At this time, the right electric double-opening sliding door 2 is controlled to open, and the right load-bearing plate 5 is driven by the right electric slider 202 to move outside the frame 1. Then, the right load-bearing plate 5 is driven by the motor 205 to rotate forward. Subsequently, the load-bearing plate 5 is removed from the sliding rack 4 by the external feeding structure and placed on the storage platform. The aluminum-based copper clad laminate is cooled down to room temperature by the external air, and a new batch of load-bearing plates 5 with prepregs 9 to be pressed are inserted into the sliding rack 4. Using the same steps as in the preparation operation before the above-mentioned feeding and pressing, the new batch of prepregs 9 are sent into the buffer cavity 1002 on the right. After the prepregs 9 in the left load-bearing plate 5 are completed with the pressing operation, they are sent into the buffer cavity 1002 on the left for cooling, and at the same time, a new batch of prepregs 9 are sent into the hot pressing cavity 1001 for pressing.

[0031] Compared with the conventional hot pressing device, after the aluminum-based copper clad laminate is completed with the pressing operation, the first driving member 207 drives the aluminum-based copper clad laminate to move into the buffer cavity 1002 for cooling, so that the cooling operation and the pressing operation of the aluminum-based copper clad laminate are carried out separately. And after the cooling operation is completed, the feeding operation of a new batch of prepregs 9 is carried out. In this way, the time required for the feeding preparation of the prepregs 9 can be reduced, so that the pressing plate 7001 can continuously carry out the pressing operation, thereby improving the pressing efficiency of the aluminum-based copper clad laminate, and further improving the production efficiency of the aluminum-based copper clad laminate.

[0032] On this basis, by separating the buffer chamber 1002 from the hot pressing chamber 1001, it is possible to avoid heat loss in the hot pressing chamber 1001 while cooling the aluminum-based copper-clad laminate, so that the temperature in the hot pressing chamber 1001 is always consistent, thereby ensuring the pressing quality of the aluminum-based copper-clad laminate. When the aluminum-based copper-clad laminate is being unloaded, the first electrically-controlled sliding door 301 and the second electrically-controlled sliding door 302 are fitted together to block outside air from entering the hot pressing chamber 1001, thereby also avoiding heat loss in the hot pressing chamber 1001. When loading, the first electrically-controlled sliding door 301 and the second electrically-controlled sliding door 302 corresponding to the buffer chamber 1002 need to be opened. Open, and at the same time control the external gas temperature control device to continuously deliver hot air flow to the ventilation plate 303 on the lower side, so that the buffer chamber 1002 is filled with hot air flow, so that when the electric double-opening sliding door 2 on the corresponding side of the buffer chamber 1002 is opened, the hot air flow continues to diffuse to the outside, thereby preventing the outside cold air from entering the buffer chamber 1002, and then the pre-stacked plate 9 is sent into the buffer chamber 1002 through the fixed plate 3 and the slide 4, and the electric double-opening sliding door 2 is closed. At this time, the pre-stacked plate 9 is preheated by the hot air flow continuously blown out from the buffer chamber 1002, so that during the subsequent pressing, the preheating operation of the pressing plate 7001 on the pre-stacked plate 9 is avoided, thereby improving the pressing efficiency.

[0033] On this basis, by making the bearing plate 5 and the side plate 5002 both of copper-chromium alloy materials that are pressure-resistant, high-temperature-resistant and have good thermal conductivity, the bearing plate 5 will not be deformed when subjected to high pressure and high temperature, thereby extending the service life of the bearing plate 5, and being able to evenly transfer heat to the steel plate 8 in contact with the bearing plate 5, thereby improving the heating uniformity of the pre-stacked plate 9.

[0034] It is also considered that when the lower side plate 5002 contacts the bottom of the upper support plate 5 , the sealing performance of the contact portion is improved by the sealing ring 304 to prevent low-temperature gas from overflowing from the contact portion, thereby affecting the uniformity of the temperature inside the support plate 5 .

[0035] Embodiment 2: On the basis of embodiment 1, refer to Figures 7 - 9 and Figure 11 As shown, it also includes an exhaust pipe 401; each slide plate 7 is fixed with an exhaust pipe 401; all the exhaust pipes 401 are connected to an external exhaust device; the air inlet of the exhaust pipe 401 is located at the edge of the pressing plate 7001.

[0036] It also includes a positioning block 402; two positioning blocks 402 are plugged into each side plate 5002 of the carrier plate 5; in order to improve the adaptability of the hot pressing machine to pre-stacked plates 9 of different sizes, the pressing plate 7001 is connected to the slide plate 7 by a detachable bolt.

[0037] Furthermore, to enable the sealing ring 304 to operate stably in high-temperature and high-pressure environments for a long time and extend the service life of the sealing ring 304, the sealing ring 304 is made of FFKM perfluororubber with good high-temperature resistance, compressive resistance and elasticity, and its operating temperature range is from -30°C to 325°C.

[0038] During the process of the pressing plate 7001 pressing the pre-laminated plate 9, in the prior art, the hot pressing cavity 1001 is usually evacuated to reduce the pressure applied by the pressing plate 7001, thereby reducing the internal stress and dimensional deformation of the aluminum-based copper clad laminate. Moreover, evacuating can avoid the appearance of bubbles and voids inside the pre-laminated plate 9. However, due to the large space inside the hot pressing cavity 1001, if the vacuum degree is not enough, it is easy to occur that the bubbles inside the pre-laminated plate 9 cannot be pumped out, resulting in insufficient adhesion between the copper foil and the aluminum plate inside the pre-laminated plate 9, thus affecting the thermal conductivity of the subsequent aluminum-based copper clad laminate, and further affecting the thermal insulation performance of the subsequent composite insulation wall. Therefore, as Figure 8 shown, when the pressing plate 7001 moves downward to press the pre-laminated plate 9, the sliding plate 7 is in contact with the sealing ring 304. And as the pressing plate 7001 presses down, the sealing ring 304 is compressed under force. At this time, a temporary sealing cavity is jointly formed among the upper sliding plate 7, the sealing ring 304, the bearing plate 5, and the lower sliding plate 7, and the air inlet of the air extraction pipe 401 is communicated with the temporary sealing cavity. At this time, the external air extraction device is controlled to extract air from the air extraction pipe 401. Compared with the conventional method of evacuating the hot pressing cavity 1001, extracting air from the temporary sealing cavity can quickly discharge the gas, thereby increasing the vacuum degree, further improving the thermal conductivity of the aluminum-based copper clad laminate, and thus improving the thermal insulation performance of the composite insulation wall. On this basis, by using FFKM perfluororubber with good high-temperature resistance, compressive resistance and elasticity for the sealing ring 304, its temperature resistance is as high as 325°C, so that the sealing ring 304 can operate stably in high-temperature and high-pressure environments for a long time and extend the service life of the sealing ring 304.

[0039] It is also considered that during the lamination process of the pre-laminated board 9, there is an interlayer slippage phenomenon, that is, when misalignment and slippage occur between adjacent two layers within one of the pre-laminated boards 9 on the carrier plate 5, the steel plate 8 on the lower side of the corresponding pre-laminated board 9 will be slightly displaced, which in turn causes the pressure applied by the pressing plate 7001 to be skewed, resulting in interlayer slippage of all the pre-laminated boards 9 on the same carrier plate 5 and reducing the yield rate of the aluminum-based copper clad laminate. Therefore, the four peripheral edges of the steel plate 8 are limited by the positioning blocks 402, so that the steel plate 8 will not shift horizontally, thereby avoiding the phenomenon that all the pre-laminated boards 9 on the carrier plate 5 undergo interlayer slippage after interlayer slippage occurs in one of the pre-laminated boards 9, improving the yield rate of the aluminum-based copper clad laminate. Moreover, due to the different sizes of the pre-laminated boards 9, the required sizes of the steel plates 8 are also different. Since the side plate 5002 and the positioning block 402 are connected by insertion, the positioning block 402 of the corresponding size can be adapted and replaced according to the size of the steel plate 8, and by adapting and replacing the size of the pressing plate 7001, the adaptability of the hot laminating machine to pre-laminated boards 9 of different sizes is improved, and the practicability of the hot laminating machine is enhanced.

[0040] Although the present invention has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art from this disclosure that various changes or modifications can be made to the present invention without departing from the principles and spirit scope of the present invention defined by the claims. Therefore, the detailed description of the embodiments of this disclosure is only used to explain, rather than to limit the present invention, and the scope of protection is defined by the content of the claims.

Claims

1. A hot pressing machine for producing aluminum-based copper-clad laminates, comprising a frame (1); an electric double-opening sliding door (2) is installed on both sides of the frame (1); and the characteristics are: The frame (1) is connected with a driving assembly; the driving assembly is connected with two left-right symmetrical fixed plates (3); the fixed plates (3) are driven to move left-right and rotate by the driving assembly; each fixed plate (3) is slidably connected with a plurality of slides (4); each slide (4) is slidably connected with a bearing plate (5) for bearing a steel plate (8) and a pre-stacked plate (9); each fixed plate (3) is installed with a telescopic bracket (6); the telescopic bracket (6) is connected with all the slides (4); a plurality of slide plates (7) are slidably connected to the middle of the frame (1); two adjacent slide plates (7) are slidably connected via a linkage rod; except for the lowermost slide plate (7), each slide plate (7) is installed with a pressing plate (7001), and each pressing plate (7001) is fixedly connected with a heating plate inside; an auxiliary cooling system for cooling the aluminum-based copper-clad laminate is installed inside the frame (1).

2. The hot pressing machine for producing aluminum-based copper-clad laminate according to claim 1, characterized in that: The driving assembly comprises a slide rail (201), an electric slider (202), a first connecting plate (203), a rotating plate (204), a motor (205), a second connecting plate (206), a first driving member (207) and a second driving member (208); a plurality of slide rails (201) are fixedly connected to the left and right sides of the frame (1); each slide rail (201) is slidably connected to an electric slider (202); each electric slider (202) is fixedly connected to a first connecting plate (203); the two first connecting plates (203) on the left are rotatably connected to a rotating plate (204); the two first connecting plates (203) on the right are also rotatably connected to a rotating plate (204); the two first connecting plates (203) on the upper side are A motor (205) is fixedly connected to each connecting plate (203); the output end of each motor (205) is fixedly connected to an adjacent rotating plate (204); each rotating plate (204) is slidably connected to a second connecting plate (206); each second connecting plate (206) is fixedly connected to an adjacent fixed plate (3) via two fixing rods, and the fixing rods penetrate adjacent electric double-opening sliding doors (2); each rotating plate (204) is fixedly connected to a first driving member (207); the telescopic end of each first driving member (207) is fixedly connected to the corresponding second connecting plate (206); a second driving member (208) is fixedly connected to the frame (1); and the telescopic end of the second driving member (208) is fixedly connected to the uppermost slide plate (7).

3. The hot pressing machine for producing aluminum-based copper-clad laminate according to claim 2, characterized in that: The auxiliary cooling system comprises a first electrically controlled sliding door (301); a plurality of first electrically controlled sliding doors (301) are installed on the upper side of a frame (1) in a symmetrical manner; the first electrically controlled sliding doors (301) penetrate the upper side of the frame (1); a plurality of second electrically controlled sliding doors (302) are installed on the lower side of the frame (1) in a symmetrical manner; the second electrically controlled sliding doors (302) penetrate the lower side of the frame (1); the first electrically controlled sliding doors (301) and the second electrically controlled sliding doors (302) both slide in a vertical direction; a cavity located between the first electrically controlled sliding doors (301) on the left and right sides of the frame (1) is a hot pressing cavity (1001); and a cavity located between the first electrically controlled sliding doors (301) and the adjacent electric double-opening sliding door (2) on the inner side of the frame (1) is a buffer cavity (1002).

4. The hot pressing machine for producing aluminum-based copper-clad laminate according to claim 1, characterized in that: A plurality of ventilation holes (5001) are evenly arranged on the edges of each supporting plate (5); each of the four sides of each supporting plate (5) is fixedly connected to a side plate (5002); the four side plates (5002) together form a closed structure; and the ventilation holes (5001) are located on the inner side of the side plates (5002).

5. The hot pressing machine for producing aluminum-based copper-clad laminates according to claim 3 is characterized in that: The auxiliary cooling system further comprises a ventilation plate (303); each first electrically controlled sliding door (301) is fixedly connected to a ventilation plate (303) for cooling the buffer cavity (1002); two ventilation plates (303) symmetrically disposed on the lower side of the frame (1) are also slidably connected; the ventilation plate (303) on the upper side is aligned with the ventilation plate (303) on the lower side; the ventilation plates (303) are all located in the corresponding buffer cavity (1002); each ventilation plate (303) is provided with a rectangular groove (30301); the outline size of the rectangular groove (30301) is the same as that of the ventilation hole (5001); The layout dimensions are consistent; a ventilation pipe (30302) is fixedly connected in each rectangular groove (30301); the ventilation pipe (30302) is a ring-shaped closed structure, and a plurality of exhaust holes are opened on the ventilation pipe (30302); all ventilation pipes (30302) are connected to the air outlet of the external gas temperature control device; a protruding block (30201) is fixedly connected to the lower side of each second electrically controlled sliding door (302); a limiting plate (30303) is fixedly connected to the lower side of the ventilation plate (303) located at the lower side; each protruding block (30201) is aligned with the middle of the corresponding limiting plate (30303).

6. The hot pressing machine for producing aluminum-based copper-clad laminates according to claim 4, characterized in that: The bearing plate (5) and the side plate (5002) are both made of a copper-chromium alloy material that is pressure-resistant, high-temperature-resistant and has good thermal conductivity.

7. The hot pressing machine for producing aluminum-based copper-clad laminates according to claim 6 is characterized in that: The auxiliary cooling system also includes a sealing ring (304); a sealing ring (304) is fixedly connected to the four side plates (5002) of the bearing plate (5).

8. The hot pressing machine for producing aluminum-based copper-clad laminates according to claim 2, characterized in that: It also includes an exhaust pipe (401); each slide plate (7) is fixedly connected with an exhaust pipe (401) for improving the pressing quality of the aluminum-based copper-clad laminate; all the exhaust pipes (401) are connected to an external exhaust device; and the air inlet of the exhaust pipe (401) is located at the edge of the pressing plate (7001).

9. The hot pressing machine for producing aluminum-based copper-clad laminates according to claim 8, characterized in that: It also includes positioning blocks (402); each side plate (5002) of the bearing plate (5) is plugged with a plurality of positioning blocks (402) for limiting the position of the steel plate (8); and the pressing plate (7001) is connected to the sliding plate (7) via detachable bolts.

10. The hot pressing machine for producing aluminum-based copper-clad laminates according to claim 7, characterized in that: The sealing ring (304) is made of FFKM perfluoro rubber which has good high temperature resistance, good pressure resistance and elasticity, and has a temperature resistance working range of -30°C to 325°C.

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