A vacuum hot press for aluminum-based copper clad laminates

Abstract

The present invention provides a vacuum hot press for aluminum-based copper clad laminates, belonging to the technical field of hot presses. The vacuum hot press for aluminum-based copper clad laminates includes a vacuum chamber and a hot pressing die located inside the vacuum chamber. It is characterized in that the hot pressing die includes a plurality of hot pressing plates longitudinally and arrayedly distributed. A first positioning mechanism and a second positioning mechanism are arranged inside the vacuum chamber. There are two first positioning mechanisms, respectively located on both sides of the hot pressing plate. The first positioning mechanism includes a rotating rod vertically arranged inside the vacuum chamber; By setting the first positioning mechanism and the second positioning mechanism, when loading the aluminum plate and the copper foil, the second positioning mechanism can be used to align one side of the aluminum plate and the copper foil. After that, when the first positioning mechanism is started, the other two sides of the aluminum plate and the copper foil can be aligned, thus avoiding the problem that the area of waste materials at the edge of the finished product of the aluminum-based copper clad laminate after pressing increases, resulting in waste of materials.

Description

Technical Field

[0001] The invention belongs to the technical field of hot presses, and in particular relates to a vacuum hot press for an aluminum-based copper-clad plate. Background Art

[0002] As an advanced material processing equipment, the vacuum hot press has its technical origins traced back to the growing demand for composite materials and high-performance materials processing. With the advancement of science and technology and the need for industrialized production, the vacuum hot press has gradually developed into an important processing equipment, widely used in many fields.

[0003] A vacuum hot press machine is disclosed in a Chinese patent with the authorization announcement number CN110605897B, including a frame, a vacuum chamber is provided on the frame, an upper hot pressing die and a lower hot pressing die are installed in the vacuum chamber, a workpiece entrance and a workpiece exit are respectively provided on the rear side and the front side of the vacuum chamber, a first hatch is installed at the workpiece entrance, a second hatch is installed at the workpiece exit, the lower ends of the first hatch and the second hatch are hinged on the vacuum chamber, a first hatch driving device capable of driving the first hatch to flip backward and place it flat on the frame is provided on the frame, a second hatch driving device capable of driving the second hatch to flip forward and place it flat on the frame is provided on the frame, a plurality of rollers are installed at intervals on the side of the first hatch near the workpiece entrance, and a plurality of rollers are installed at intervals on the part of the second hatch near the workpiece exit. The hatch in the present invention can be opened and closed automatically, and the hatch after opening can be flipped and laid flat to serve as an input roller or an output roller, so that the placement and removal of the workpiece are relatively convenient.

[0004] In the production of aluminum-based copper-clad laminates, multiple sets of aluminum plates and copper foils are usually placed between the upper hot-pressing die and the lower hot-pressing die. Each set of aluminum plates and copper foils will be pressed into a finished aluminum-based copper-clad laminate. During the transportation and loading process of the multiple sets of aluminum plates and copper foils, the vibration of mechanical equipment will cause a certain amount of displacement between the multiple sets of aluminum plates and copper foils, resulting in the multiple sets of aluminum plates and copper foils not being aligned when placed between the upper hot-pressing die and the lower hot-pressing die, which can easily cause the area of waste at the edge of the finished aluminum-based copper-clad laminate after pressing to increase. In the subsequent trimming process, a large amount of waste needs to be cut off, resulting in material waste. Summary of the invention

[0005] The object of the present invention is to provide a vacuum hot press for aluminum-based copper-clad laminates, aiming to solve the problem that the vacuum hot press in the prior art cannot align the aluminum plate and the copper foil, which easily causes the area of waste material at the edge of the finished aluminum-based copper-clad laminate after pressing to increase, and in the subsequent trimming process, a large amount of waste material needs to be cut off, resulting in material waste.

[0006] To achieve the above object, the present invention provides the following technical solution: A vacuum hot press for aluminum-based copper clad laminates, comprising: a vacuum chamber and a hot pressing die located inside the vacuum chamber, characterized in that the hot pressing die includes a plurality of hot pressing plates longitudinally and arrayedly distributed, and a first positioning mechanism and a second positioning mechanism are arranged inside the vacuum chamber. There are two first positioning mechanisms, respectively located on both sides of the hot pressing plate. The first positioning mechanism includes a rotating rod vertically arranged inside the vacuum chamber. The rotating rod is rotatably connected inside the vacuum chamber, and eccentric top blocks matching the number of hot pressing plates are arranged on the rotating rod. When the hot pressing die is in the open die state, the lower surface of the eccentric top block is flush with the upper surface of the hot pressing plate. When the rotating rod rotates, it can drive the eccentric top blocks to rotate simultaneously, so that the eccentric parts of the eccentric top blocks can abut against one side of the aluminum plate and the copper foil. The second positioning mechanism is used to align the other side of the aluminum plate and the copper foil when feeding the aluminum plate and the copper foil.

[0007] A further technical solution of the present invention is that a second sliding groove is opened on the eccentric top block, and a second limiting groove is opened in the second sliding groove. A second limiting block adapted to the second limiting groove is arranged on the rotating rod. The eccentric top block can slide horizontally on the rotating rod through the second sliding groove. The cross-sectional shape of the rotating rod is rectangular, and an elastic member is arranged in the second sliding groove for the reset of the eccentric top block.

[0008] A further technical solution of the present invention is that the top end of the eccentric part of the eccentric top block is arc-shaped.

[0009] A further technical solution of the present invention is that an installation table is arranged at the eccentric part of the eccentric top block, a roller is installed on the installation table, and a belt is sleeved on the installation table and the roller together.

[0010] A further technical solution of the present invention is that a first groove is designed on the installation table, a second groove is designed on the roller, and a protrusion capable of being embedded in the first groove and the second groove simultaneously is arranged on the belt.

[0011] A further technical solution of the present invention is that the belt is made of a flexible material.

[0012] A further technical solution of the present invention is that a driving device is arranged on the vacuum chamber. The driving device includes two independent driving sources. The two driving sources respectively correspond to and control the first positioning mechanism and the second positioning mechanism. A transmission structure is arranged on one of the driving sources, and the transmission structure can drive two rotating rods to rotate synchronously in opposite directions at the same time. The other driving source is directly connected to the second positioning mechanism for independently controlling the opening and closing of the second positioning mechanism.

[0013] A further technical solution of the present invention is that guide rails are vertically arranged on both sides of the inner wall of the vacuum chamber. A first sliding groove adapted to the guide rails is provided on the hot pressing plate. A plurality of first limiting grooves arranged in a longitudinal array are provided on the guide rails. A first limiting block capable of sliding in the first limiting grooves is provided on the first sliding groove. Each hot pressing plate corresponds to a first limiting groove.

[0014] A further technical solution of the present invention is that the structure of the second positioning mechanism is the same as that of the first positioning mechanism, and the eccentric parts of the eccentric top blocks are located outside the hot pressing plate in the initial state.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. By providing the first positioning mechanism and the second positioning mechanism, when feeding the aluminum plate and the copper foil, the second positioning mechanism can be used to align one side of the aluminum plate and the copper foil. Then, when the first positioning mechanism is started, the other two sides of the aluminum plate and the copper foil can be aligned, thereby avoiding the problem that the area of the waste material at the edge of the finished product of the aluminum-based copper clad laminate after pressing increases, resulting in material waste.

[0017] 2. A second sliding groove is provided inside the eccentric top block, and the rotating rod can slide inside the second sliding groove. When aligning larger aluminum plates and copper foils, the aluminum plates and copper foils push the eccentric top blocks to slide on the rotating rod, thereby avoiding interference between the eccentric top blocks and the aluminum plates and copper foils, and thus being applicable to aluminum-based copper clad laminates of different sizes.

[0018] 3. By providing a belt at the top of the eccentric top block, friction between the eccentric top block and the aluminum plate and the copper foil can be avoided, and wear of the side walls of the aluminum plate and the copper foil can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0020] Figure 1 is a schematic structural diagram of a specific embodiment in the present invention;

[0021] Figure 2 is an internal structural diagram of a specific embodiment in the present invention;

[0022] Figure 3 is a schematic installation structure diagram of the first positioning mechanism in a specific embodiment in the present invention;

[0023] Figure 4 is a schematic installation position structure diagram of the first positioning mechanism and the second positioning mechanism in a specific embodiment in the present invention;

[0024] Figure 5 Schematic diagram of the installation structure of the eccentric top block in the specific embodiment of the present invention;

[0025] Figure 6 Schematic diagram of the structure of the eccentric top block in the specific embodiment of the present invention;

[0026] Figure 7 is Figure 3 Enlarged schematic diagram of the structure at A in

[0027] Figure 8 is Figure 2 Enlarged schematic diagram of the structure at B in

[0028] In the figure: 1, vacuum chamber; 11, feed opening; 12, sealing door; 2, hot pressing die; 21, hot pressing plate; 22, guide rail; 23, first limiting groove; 24, first sliding groove; 25, first limiting block; 3, first positioning mechanism; 31, rotating rod; 32, eccentric top block; 33, second sliding groove; 34, second limiting block; 35, second limiting groove; 36, elastic member; 4, second positioning mechanism; 5, driving device; 51, driving source; 52, transmission structure; 6, installation table; 61, first groove; 7, roller; 71, second groove; 8, belt; 81, protrusion. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-8 , the present invention provides the following technical solutions: A vacuum hot press for aluminum-based copper clad laminates includes a vacuum chamber 1, a hot pressing die 2, two first positioning mechanisms 3, a second positioning mechanism 4, and a driving device 5 located above the vacuum chamber 1;

[0031] The hot pressing mold 2, the first positioning mechanism 3 and the two second positioning mechanisms 4 are all arranged inside the vacuum chamber 1. The hot pressing mold 2 is responsible for pressing the aluminum plate and the copper foil. During the feeding process, when the aluminum plate and the copper foil are loaded into the hot pressing mold 2, the feeding mechanism (not shown in the figure) pushes the edge of one side to push them into the hot pressing mold 2. When the feeding mechanism feeds the aluminum plate and the copper foil, the second positioning mechanism 4 is brought into contact with the other side of the aluminum plate and the copper foil through the driving device 5 to ensure that one side of the aluminum plate and the copper foil are aligned. The two first positioning mechanisms 3 are mirror-imaged on both sides of the vacuum chamber 1. Subsequently, the driving device 5 can also move the two first positioning mechanisms 3 at the same time to align the other two sides of the aluminum plate and the copper foil, thereby effectively avoiding the misalignment or offset between the aluminum plate and the copper foil.

[0032] It should be noted that the feeding mechanism is a common supporting equipment of the vacuum hot press, and the specific structure will not be described in detail.

[0033] The vacuum bin 1 is a rectangular structure, standing vertically on the ground. A feeding door opening 11 is opened on one side of the vacuum bin 1, and the feeding door opening 11 is located on the side wall of the vacuum bin 1. A sealing door 12 is installed at the position of the feeding door opening 11. The sealing door 12 is opened by a lateral sliding method. When the sealing door 12 slides to the feeding door opening 11, it can completely cover the feeding door opening 11 and tightly close it.

[0034] See also Figure 2 and Figure 3 The hot pressing mold 2 includes a plurality of hot pressing plates 21 arranged in a longitudinal array. Vertical guide rails 22 are arranged on both sides of the inner wall of the vacuum chamber 1. The hot pressing plate 21 is provided with a first slide groove 24 (such as Figure 4 As shown in FIG. 1 ), through these first slide grooves 24, the hot pressing plate 21 can slide smoothly on the guide rail 22. The guide rail 22 guides the hot pressing plate 21 to ensure that the hot pressing plate 21 does not deviate during the movement. In addition, a plurality of first limiting grooves 23 arranged in a longitudinal array are provided on the guide rail 22 (as shown in FIG. Figure 8 As shown in the figure, the spacings between these first limiting grooves 23 are equal. The first sliding groove 24 is provided with a first limiting block 25 that can slide in the first limiting groove 23. Each hot pressing plate 21 corresponds to a first limiting groove 23. Through the design of the first limiting groove 23, a uniform distribution of multiple hot pressing plates 21 can be achieved. When each hot pressing plate 21 slides to the bottom of the first limiting groove 23, the distance between the hot pressing plates 21 remains consistent.

[0035] See also Figures 3-5, the first positioning mechanism 3 is composed of a rotating rod 31 and eccentric top blocks 32 that match the number of hot pressing plates 21. The cross-section of the rotating rod 31 is rectangular. It is vertically installed inside the vacuum chamber 1, and its two ends are respectively rotatably connected to the upper and lower ends of the vacuum chamber 1. To enhance the smooth rotation of the rotating rod 31, its two ends are designed to be cylindrical, thereby improving the rotational stability. A second chute 33 is provided in the middle of the eccentric top block 32, and a second limiting groove 35 is also provided inside the second chute 33. Second limiting blocks 34 that are adapted to the second limiting groove 35 are provided on the rotating rod 31. The number of these second limiting blocks 34 is the same as the number of eccentric top blocks 32 and they are evenly arranged along the length direction of the rotating rod 31. Through the cooperation of the second limiting blocks 34 and the second limiting groove 35, the up and down sliding of the eccentric top block 32 on the rotating rod 31 can be effectively restricted, ensuring that the eccentric top block 32 does not move randomly. When the hot pressing die 2 is in the open die state, the lower surface of the eccentric top block 32 is flush with the upper surface of the hot pressing plate 21;

[0036] When the two rotating rods 31 rotate simultaneously, they drive the eccentric top blocks 32 on them to perform mirror image movements, that is, the two rotating rods 31 drive the eccentric top blocks 32 to rotate in opposite directions. Since the eccentric top blocks 32 are eccentrically designed, during the rotation process, they can make the eccentric parts of the eccentric top blocks 32 on the two rotating rods 31 swing towards the directions of the aluminum plate and the copper foil at the same time. In this way, the eccentric parts of the two eccentric top blocks 32 can abut against the two side walls of the aluminum plate and the copper foil, thereby realizing the precise alignment of the sides of the aluminum plate and the copper foil, and at the same time positioning the aluminum plate and the copper foil in the middle of the hot pressing plate 21. In addition, since the lower surface of the eccentric top block 32 is flush with the upper surface of the hot pressing plate 21, the eccentric top blocks 32 will not interfere with the hot pressing plate 21 during the movement of the eccentric top blocks 32.

[0037] Please refer to Figure 7 , the driving device 5 includes two independent driving sources 51, which respectively correspond to and control the first positioning mechanism 3 and the second positioning mechanism 4. One of the driving sources 51 is connected to a transmission structure 52, and the transmission structure 52 adopts a chain drive method. Specifically, the transmission structure 52 includes a driving sprocket and two driven sprockets, and these two driven sprockets are both connected to the driving sprocket through chains. A rotating rod 31 is connected to each driven sprocket. Therefore, when the driving source 51 drives the driving sprocket to rotate, it can drive the two driven sprockets to rotate in opposite directions at the same time, and further make the two rotating rods 31 rotate synchronously in opposite directions. The other driving source 51 is directly connected to the second positioning mechanism 4 for independently controlling the opening and closing of the second positioning mechanism 4.

[0038] In the production process of aluminum-based copper clad laminates, in order to meet the diverse needs of different manufacturers, it is necessary to process and handle aluminum-based copper clad laminates of various sizes. However, in the above solution, only the alignment operation can be performed on aluminum-based copper clad laminates of a fixed size. When attempting to align larger-sized aluminum-based copper clad laminates, since the driving device 5 adopts a rigid driving method, it is easy to damage the side walls of the aluminum-based copper clad laminates, and at the same time, it may also accelerate the damage of the driving device 5 and shorten its service life. Therefore, we need to further optimize the solution to ensure that the alignment operation of aluminum-based copper clad laminates of different sizes can be carried out flexibly and effectively;

[0039] Please refer to Figure 5 , in order to enable this solution to adapt to aluminum-based copper clad laminates of different sizes, the eccentric top block 32 is designed to be able to slide horizontally along the rotating rod 31 through the second sliding groove 33. Inside the second sliding groove 33, an elastic member 36 is provided, and this elastic member 36 is a compression spring. One end of the compression spring is fixed on the rotating rod 31, and the other end is connected to the inside of the second sliding groove 33 to ensure that the eccentric top block 32 has appropriate elasticity and return ability during the sliding process;

[0040] When aligning larger-sized aluminum-based copper clad laminates, one side of the eccentric part of the eccentric top block 32 will first come into contact with the side walls of the aluminum plate and the copper foil. Subsequently, the driving device 5 drives the two rotating rods 31 to continue rotating, and then drives their respective eccentric top blocks 32 to rotate accordingly. Since the top of the eccentric part is designed to be arc-shaped, the side walls of the aluminum plate and the copper foil can push the eccentric top block 32 to slide horizontally along the rotating rod 31 through the rotation of the eccentric part. After the rotating rod 31 rotates 180 degrees and stops, under the action of the elastic member 36, when the eccentric top block 32 rotates, the eccentric part can always maintain close contact with the side walls of the aluminum plate and the copper foil, and at the same time, the elastic member 36 can also be used for the reset of the eccentric top block 32, so as to ensure that this solution can flexibly adapt to and accurately align aluminum-based copper clad laminates of different sizes.

[0041] When the eccentric top block 32 rotates, since its eccentric part always remains in contact with the side walls of the aluminum plate and the copper foil, friction will be generated between the two, and this friction is likely to cause wear on the side walls of the aluminum plate and the copper foil;

[0042] Please refer to Figure 5 , therefore, an installation platform 6 is provided at the eccentric part of the eccentric top block 32, a roller 7 is installed on the installation platform 6, and a rubber belt 8 is sleeved on both the installation platform 6 and the roller 7. When the eccentric top block 32 comes into contact with the aluminum plate and the copper foil, first, the belt 8 comes into contact with the side walls of the aluminum plate and the copper foil. Through the friction force between the belt 8 and the side walls of the aluminum plate and the copper foil, the belt 8 can rotate on the installation platform 6 and the roller 7, thus effectively avoiding the wear of the side walls of the aluminum-based copper clad laminates.

[0043] In addition, to prevent the belt 8 from falling off the mounting table 6, a first groove 61 is designed on the mounting table 6, and a second groove 71 is designed on the roller 7. The belt 8 is provided with a protrusion 81 that can be embedded in the first groove 61 and the second groove 71 simultaneously. Through the cooperation between the first groove 61, the second groove 71 and the protrusion 81, the belt 8 can be effectively limited in position to ensure that it will not fall off the mounting table 6.

[0044] It should be noted that the structure of the second positioning mechanism 4 is the same as that of the first positioning mechanism 3, and the eccentric parts of the eccentric top blocks 32 are located outside the hot pressing plate 21 in the initial state, that is, the eccentric top blocks 32 and the hot pressing plate 21 do not coincide in the vertical projection.

[0045] During use, first, the aluminum plate and the copper foil are smoothly pushed onto the hot pressing plate 21 by the feeding mechanism. During the feeding process, the driving device 5 is started in advance, and the second positioning mechanism 4 is adjusted so that the eccentric parts of the eccentric top blocks 32 thereon are aligned with the positions of the aluminum plate and the copper foil. Subsequently, the feeding mechanism pushes the side edges of the aluminum plate and the copper foil to move until they come into contact with the eccentric top blocks 32 on the second positioning mechanism 4, thereby realizing the preliminary alignment of the aluminum plate and the copper foil. During this process, the eccentric top blocks 32 will slide on the rotating rod 31 and compress the elastic member 36 at the same time. After the feeding mechanism finishes pushing and withdraws, the elastic force of the elastic member 36 will push the aluminum plate and the copper foil to move further to ensure that their positions are accurately positioned. Then, the first positioning mechanism 3 is started, and the eccentric top blocks 32 thereon come into contact with the other two side walls of the aluminum plate and the copper foil to complete the overall alignment of the aluminum plate and the copper foil. The belt 8 provided on the eccentric top blocks 32 effectively reduces the friction with the aluminum plate and the copper foil and avoids the wear of the side walls. After the alignment is completed, that is, after the first positioning mechanism 3 rotates 180 degrees, then the second positioning mechanism 4 rotates in the reverse direction to make the eccentric parts of the eccentric top blocks 32 away from the aluminum plate and the copper foil, creating space for the hot pressing operation. Then, the aluminum plate and the copper foil are subjected to hot pressing treatment. After the hot pressing is completed, the first positioning mechanism 3 rotates 180 degrees in the reverse direction to reset and get ready for the next operation.

Claims

1. A vacuum hot press for aluminum-based copper clad laminates, comprising: A vacuum chamber (1) and a hot pressing die (2) located inside the vacuum chamber (1), characterized in that the hot pressing die (2) comprises a plurality of hot pressing plates (21) distributed in a longitudinal array, a first positioning mechanism (3) and a second positioning mechanism (4) are arranged inside the vacuum chamber (1), two of the first positioning mechanisms (3) are provided and are respectively located on both sides of the hot pressing plate (21), the first positioning mechanism (3) comprises a rotating rod (31) vertically arranged inside the vacuum chamber (1), the rotating rod (31) is rotatably connected inside the vacuum chamber (1), an eccentric top block (32) matching the number of the hot pressing plates (21) is arranged on the rotating rod (31), when the hot pressing die (2) is in an open die state, the lower surface of the eccentric top block (32) is flush with the upper surface of the hot pressing plate (21), when the rotating rod (31) rotates, it can drive the eccentric top block (32) to rotate simultaneously, so that the eccentric part of the eccentric top block (32) can abut against one side of the aluminum plate and the copper foil, and the second positioning mechanism (4) is used for aligning the other side of the aluminum plate and the copper foil when feeding the aluminum plate and the copper foil; A second chute (33) is formed in the eccentric top block (32), a second limiting groove (35) is formed in the second chute (33), a second limiting block (34) adapted to the second limiting groove (35) is arranged on the rotating rod (31), the eccentric top block (32) can slide horizontally on the rotating rod (31) through the second chute (33), the cross-sectional shape of the rotating rod (31) is rectangular, and an elastic member (36) is arranged in the second chute (33) for resetting the eccentric top block (32); The top end of the eccentric part of the eccentric top block (32) is arc-shaped; An installation table (6) is arranged at the eccentric part of the eccentric top block (32), a roller (7) is installed on the installation table (6), and a belt (8) is sleeved on the installation table (6) and the roller (7) together; 2. The vacuum hot press for aluminum-based copper clad laminate according to claim 1, wherein: A first groove (61) is designed on the installation table (6), a second groove (71) is designed on the roller (7), and a protrusion (81) capable of being embedded into the first groove (61) and the second groove (71) simultaneously is arranged on the belt (8); 3. The vacuum hot press for aluminum-based copper clad laminates according to claim 1, characterized in that: The belt (8) is made of a flexible material; 4. The vacuum hot press for aluminum-based copper clad laminate according to claim 1, wherein: A driving device (5) is arranged on the vacuum chamber (1), the driving device (5) comprises two independent driving sources (51), the two driving sources (51) respectively correspond to and control the first positioning mechanism (3) and the second positioning mechanism (4), a transmission structure (52) is arranged on one of the driving sources (51), the transmission structure (52) can drive two rotating rods (31) to rotate synchronously in opposite directions at the same time, and the other driving source (51) is directly connected to the second positioning mechanism (4) for independently controlling the opening and closing of the second positioning mechanism (4).

5. The vacuum hot press for aluminum-based copper clad laminate according to claim 1, characterized in that: On both sides of the inner wall of the vacuum chamber (1), guide rails (22) are vertically arranged. A first sliding groove (24) adapted to the guide rails (22) is provided on the hot pressing plate (21). A plurality of first limiting grooves (23) arranged in a longitudinal array are provided on the guide rails (22). A first limiting block (25) capable of sliding in the first limiting grooves (23) is provided on the first sliding groove (24). Each hot pressing plate (21) corresponds to a first limiting groove (23).

6. A vacuum hot press for aluminum-based copper clad laminates according to any one of claims 1-5, characterized in that: The structure of the second positioning mechanism (4) is the same as that of the first positioning mechanism (3), and the eccentric parts of the eccentric top blocks (32) are located outside the hot pressing plates (21) in the initial state.

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