Stacked plate pressing system and method with pressing jig box

Abstract

The present invention discloses a laminate pressing system and method with a pressing jig box, wherein the laminate pressing system comprises: a plurality of pressing jig boxes, each of which is used to accommodate a plurality of laminates, the number of which is less than 10; a first process machine, which is used to sequentially perform a vacuuming step and a preheating step on the laminates in each pressing jig box; a second process machine, which is used to sequentially perform a high pressure step and a high temperature step on the laminates in each pressing jig box; and a fifth process machine, which is used to sequentially perform a cooling step on the laminates in each pressing jig box. The present invention is a mobile pressing process, which can reduce the number of scrapped samples, improve production efficiency, and reduce maintenance time.

Description

Technical Field

[0001] The present invention relates to a laminated plate pressing system and method, and more particularly to a laminated plate pressing system and method having a pressing jig box. Background Art

[0002] A general printed circuit board (PCB) is a circuit board made by wiring circuit components according to circuit design, and is made by surface treatment and mechanical processing. It is often used in various electronic products. Existing printed circuit boards use an insulating layer as a substrate, and the surface of the substrate is laminated with at least one layer of pad material to make a panel. For example, please refer to Figure 1a and Figure 1b , a stacking method of stacked plates 1 with pads on both sides, each stacked plate 1 has multiple layers from top to bottom, including a pressed steel plate 13, a pad 12, a substrate 11 coated with a thermal conductive insulating layer (such as a semi-cured film), a pad 12 and a pressed steel plate 13, which are stacked in sequence to form a stacked plate 1. Please refer to Figure 2 In the mass production process, multiple stacks 1 (e.g., 100 stacks) are stacked at a time and the stacks 1 are pressed in a conventional press machine 9. The conventional press machine 9 includes a press machine frame 91, an upper plate 92, a lower plate 93, and a hydraulic cylinder 94. Figure 3 In the conventional lamination process, the stacked plates undergo the steps of feeding, vacuuming, heating, pressurizing, holding temperature, cooling, and unloading to form a plurality of substrates with cushion materials on both sides. However, the steps of vacuuming, heating, pressurizing, holding temperature, cooling, and the like in the conventional lamination process are performed only in a single machine of the conventional lamination machine 9 for the stacked plates (for example, the conventional lamination process usually has 100 stacked plates). Once the conventional lamination machine 9 has a machine equipment abnormality, a large number of cushion material-covered substrate products in the conventional lamination machine may be scrapped at the same time.

[0003] Chinese patent authorization announcement number CN102407626B discloses a pressing process for aluminum substrate clad with copper foil, including the following process steps: a. cleaning, passivating and drying the aluminum substrate to remove impurities and rust on the surface of the aluminum substrate; b. coating the clean and dry surface of the aluminum substrate obtained in step a with a thermally conductive insulating adhesive, which can be sprayed, screen printed or rolled, or a combination of multiple methods to solve the problem of thickness control of the thermally conductive insulating layer and form a thermally conductive insulating layer with uniform thickness, the thickness of the thermally conductive insulating layer ranges from 60 to 210 μm, and the thickness can be adjusted according to needs. c. pre-assemble the aluminum substrate coated with the thermally conductive insulating layer by hot rolling, so that the thermally conductive insulating layer is semi-cured and the aluminum substrate is closely attached; d. Copper foil is covered on the side of the aluminum substrate coated with the thermally conductive insulating adhesive, and the aluminum substrate, copper foil and pressed steel plate are stacked in the following order to form a hot pressing plate group: pressed steel plate, copper foil, aluminum substrate, aluminum substrate, copper foil, pressed steel plate, and multiple hot pressing plate groups are pressed in the pressing machine at the same time, and pressed for 50 to 80 minutes under the conditions of high temperature of 160 to 200°C, vacuum degree of 740Hg / mm, and pressure of 250 to 500psi to make an aluminum substrate covered with copper foil. However, the vacuuming, heating and pressurizing of the pressing process (for example, the conventional pressing process usually has 100 stacked plates) of the above patent document (CN102407626B) are still completed only in a single machine of the pressing machine. Once the laminating machine has an equipment abnormality, a large number of aluminum substrate copper foil products in the laminating machine may be scrapped at the same time.

[0004] Furthermore, Chinese patent application publication number CN105636368A discloses a control method for uniform lamination of multi-layer PCBs, comprising the following steps: (1) PCB lamination: firstly placing an additional circuit board, placing a lower buffer layer on the additional circuit board, placing mirror steel plates and PCB boards alternately on the lower buffer layer, the PCB board being composed of an upper copper foil, a plurality of core board layers and a lower copper foil placed in sequence from top to bottom, a semi-cured sheet being placed between the upper copper foil and the lower copper foil and the adjacent core board layers, a semi-cured sheet being placed between the core board layers, the placement positions of the core board layers and the semi-cured sheets being positioned by an infrared positioning transmitter, the number of the mirror steel plates is the same as that of the PCB boards, the number of the PCB boards is matched with the opening height of the hot plate of the lamination device, and then placing an upper buffer layer, and placing a cover plate on top of the upper buffer layer; (2) Lamination: The PCB board stack obtained in step (1) is laminated by a lamination device, wherein the lamination device comprises a hot press and a cold press, and the PCB board stack is laminated by the hot press first and then by the cold press.

[0005] However, the vacuuming, heating and pressurizing of the laminating process (e.g., conventional laminating process usually has 100 stacks) in the above patent document (CN105636368A) are still completed in a single hot press. Once the hot press has an equipment abnormality, a large number of PCB stacks in the hot press may be scrapped at the same time.

[0006] Therefore, there is a need to provide a laminate lamination system and method to solve the aforementioned problems. Summary of the invention

[0007] An object of the present invention is to provide a plate lamination system and method having a lamination jig box, wherein the plate lamination method is a mobile lamination process, which can reduce the number of scrapped samples, improve production efficiency, and reduce maintenance time.

[0008] According to the above-mentioned purpose, the present invention provides a laminate pressing system with a pressing jig box, comprising: a plurality of pressing jig boxes, each of which is used to accommodate a plurality of laminates; a first process machine, which is used to sequentially perform a vacuum step and a preheating step on the laminates in each pressing jig box; a second process machine, which is connected to the first process machine and is used to sequentially perform a high pressure step and a high temperature step on the laminates in each pressing jig box; and a fifth process machine, which is connected to the fourth process machine and is used to sequentially perform a cooling step on the laminates in each pressing jig box.

[0009] The present invention further provides a laminate lamination method with a lamination jig box, comprising the following steps: step A, providing a plurality of lamination jig boxes, each of which is used to accommodate a plurality of laminates for feeding; step B, sequentially evacuating and preheating the laminates in each lamination jig box; step C, sequentially subjecting the laminates in each lamination jig box to high pressure and high temperature; step F, sequentially cooling the laminates in each lamination jig box; and step G, curing the laminates in each lamination jig box to form a plurality of substrates covered with cushion materials for discharging, wherein the laminates in each lamination jig box complete the above steps sequentially.

[0010] The laminate lamination method with a lamination jig box of the present invention is a mobile lamination process. A single lamination jig box contains a plurality of laminates, and each of the laminates contained therein moves along with the machine of the mobile lamination process (i.e., the first, second, and fifth process machines of the laminate lamination system of the present invention). This can reduce the scrapping of a large number of substrate products covered with cushion materials caused by abnormalities of a single machine in the prior art, thereby improving production efficiency. Furthermore, if any of the first, second, and fifth process machines of the laminate lamination system fails, only the failed machine needs to be repaired, thereby reducing the repair time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1a and Figure 1b It is a schematic diagram of the exploded and assembled cross-section of a laminate with copper foil stacked on both sides in the prior art;

[0012] Figure 2 It is a cross-sectional schematic diagram of a conventional pressing machine;

[0013] Figure 3 It is a schematic diagram of the steps of the conventional pressing process;

[0014] Figure 4 It is a structural schematic diagram of a stacked plate pressing system with a pressing jig box according to a first embodiment of the present invention;

[0015] Figure 5 is a three-dimensional schematic diagram of each pressing jig box of the present invention, which shows that a plurality of stacked plates are accommodated;

[0016] Figure 6 It is a structural schematic diagram of a stacked plate pressing system with a pressing jig box according to a second embodiment of the present invention.

[0017] Explanation of symbols in the accompanying drawings:

[0018] 1 stacking board;

[0019] 11 substrate;

[0020] 12 cushion material;

[0021] 13 Pressed steel plate;

[0022] 2. Plate lamination system;

[0023] 21 First process machine;

[0024] 22 second process machine;

[0025] 23 third process machine;

[0026] 24 Fourth process machine;

[0027] 25 Fifth process machine;

[0028] 3. Press the jig box;

[0029] 31 Upper cover;

[0030] 32 hollow body;

[0031] 4. Plate lamination system;

[0032] 41 First process machine;

[0033] 42 second process machine;

[0034] 45 Fifth process machine;

[0035] 9. Laminating machine;

[0036] 91 Press frame;

[0037] 92 upper top plate;

[0038] 93 lower top plate;

[0039] 94 hydraulic cylinder;

[0040] Steps A~H. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and characteristics of the present invention more clearly understood, relevant embodiments of the present invention are described in detail as follows with reference to the accompanying drawings.

[0042] Figure 4 Schematic diagram of the structure of a lamination lamination system with a lamination jig box according to the first embodiment of the present invention. The lamination lamination system 2 includes: a plurality of lamination jig boxes 3 and first to fifth process machines 21, 22, 23, 24, 25. Please refer to Figure 5 , each pressing jig box 3 is used to accommodate a plurality of stacking plates 1, and the number of the stacking plates 1 is less than 10. For example, the number of the stacking plates 1 may be 3 to 5. Preferably, the number of the stacking plates 1 is 3. The pressing jig box 3 is made of a rigid heat-resistant material, such as steel. The pressing jig box 3 includes an upper cover 31 and a hollow body 32, and a space is defined between the upper cover 31 and the hollow body 32 to stack and accommodate the stacking plates 1. For example, the upper cover 31 may be opened first, and then the stacking plates 1 may be placed in the hollow body 32, and then the upper cover 31 may be covered on the hollow body 32, so that the stacking plates 1 are accommodated in the space between the upper cover 31 and the hollow body 32. The upper cover 31 may be fixed to the hollow body 32 by means of a tenon (not shown).

[0043] The first process machine 21 is used to sequentially perform a vacuuming step and a preheating step on the laminates 1 in each pressing jig box 3. For example, a vacuum pump and a heating plate can be used to vacuum and preheat the laminates 1 in each pressing jig box 3 to avoid bubbles when the laminates 1 are pressed. The second process machine 22 is connected to the first process machine 21, and is used to sequentially perform a high-pressure step and a high-temperature step on the laminates 1 in each pressing jig box 3. For example, a hydraulic press press method plus a heating plate, or a vacuum chamber (Autoclave) air pressure method, that is, high-temperature and high-pressure carbon dioxide, can be used to subject the laminates 1 in each pressing jig box 3 to high pressure and high temperature. In this embodiment, the upper top plate and the lower top plate of the hydraulic press are used to pressurize the upper cover 31 and the hollow body 32 (such as Figure 5 As shown), the pressure is then transmitted to the laminates 1. The third process machine 23 is connected to the second process machine 22, and is used to sequentially perform high pressure and post-bake on the laminates 1 in each pressing jig box 3. For example, the pumping and pressing method of a hydraulic press can be used with a heating plate to perform high pressure and post-bake on the laminates 1 in each pressing jig box 3. The fourth process machine 24 is connected to the third process machine 23, and is used to sequentially perform post-bake steps on the laminates 1 in each pressing jig box 3. For example, a heating plate can be used to post-bake on the laminates 1 in each pressing jig box 3. The fifth process machine 25 is connected to the second process machine 22 via the third process machine 23 and the fourth process machine 24, that is, the fifth process machine 25 can be connected to the fourth process machine 24, and is used to sequentially perform cooling steps on the laminates 1 in each pressing jig box 3. For example, a low temperature coolant may be used to cool the laminates 1 in each pressing jig box 3 to about 50° C. Each pressing jig box 3 may be transported between the first to fifth process machines 21 , 22 , 23 , 24 , 25 by a conveyor belt.

[0044] Please refer to Figure 4 , the first embodiment of the present invention is a laminate pressing method with a pressing jig box, comprising the following steps: Step A, providing a plurality of pressing jig boxes 3, each pressing jig box 3 is used to accommodate a plurality of laminates 1 for feeding. Step B, sequentially evacuating and preheating the laminates 1 in each pressing jig box 3. For example, the vacuum degree may be about 740Hg / mm, and preheating means that the temperature may be about 35~40°C. Step C, sequentially subjecting the laminates 1 in each pressing jig box 3 to high pressure and high temperature. For example, high pressure means that the pressure may be about 250~500psi, and high temperature means that the temperature may be about 180~220°C.

[0045] Step D, sequentially subjecting the laminates 1 in each pressing jig box 3 to high pressure and post-baking. For example, high pressure means that the pressure can be about 250-500 psi, and post-baking means that the temperature can be about 150°C. Step E, sequentially subjecting the laminates 1 in each pressing jig box 3 to post-baking. For example, the pressure can be atmospheric pressure, and post-baking means that the temperature can be about 150°C. After step D and step E, the residual stress of the product when cooling down can be reduced.

[0046] Step F, sequentially cool the stacked plates 1 in each pressing jig box 3. For example, cool the stacked plates 1 in each pressing jig box 3 to room temperature. Step G, solidify the stacked plates 1 in each pressing jig box 3 to form a plurality of substrates covered with cushion materials for discharge, wherein the stacked plates 1 in each pressing jig box 3 sequentially complete steps A to G. The substrate covered with cushion materials may be a substrate covered with metal cushion materials, for example, the metal cushion materials are made of copper, aluminum, etc.

[0047] The lamination pressing method further comprises: step H, returning the empty box of the pressing jig box 3 in step G to step A for use.

[0048] The laminate lamination method with a lamination jig box of the present invention is a mobile lamination process. A single lamination jig box contains a plurality of laminates (the number of the laminates is less than 10), and each of the laminates contains moves with the machine of the mobile lamination process (i.e., the first to fifth process machines of the laminate lamination system of the first embodiment of the present invention). This can reduce the scrapping of a large number of substrate products covered with cushion materials caused by abnormalities of a single machine in the prior art, thereby improving production efficiency. Furthermore, if any of the first to fifth process machines of the laminate lamination system fails, only the failed machine needs to be repaired, thereby reducing the repair time.

[0049] Figure 6 Schematic diagram of the structure of a laminate pressing system with a pressing jig box according to the second embodiment of the present invention. The laminate pressing system 4 comprises: a plurality of pressing jig boxes 3 and first, second and fifth process machines 41, 42, 45. Each pressing jig box 3 is used to accommodate a plurality of laminates 1, and the number of the laminates 1 is less than 10. For example, the number of the laminates 1 may be 3 to 5. Preferably, the number of the laminates 1 is 3. The pressing jig box 3 is made of a rigid heat-resistant material.

[0050] The first process machine 41 is used to sequentially perform a vacuuming step and a preheating step on the laminates 1 in each pressing jig box 3. For example, a vacuum pump and a heating plate can be used to vacuum and preheat the laminates 1 in each pressing jig box 3 to avoid bubbles when the laminates 1 are pressed. The second process machine 42 is connected to the first process machine 41 and is used to sequentially perform a high pressure step and a high temperature step on the laminates 1 in each pressing jig box 3. For example, a hydraulic press press method with a heating plate, or a vacuum chamber (Autoclave) air pressure method, that is, high temperature and high pressure carbon dioxide, can be used to subject the laminates 1 in each pressing jig box 3 to high pressure and high temperature. The fifth process machine 45 is connected to the second process machine 42 and is used to sequentially perform a cooling step on the laminates 1 in each pressing jig box 3. For example, a low temperature coolant may be used to cool the stacked plates 1 in each pressing jig box 3 to about 50°C.

[0051] Please refer to Figure 6 The second embodiment of the present invention is a laminate lamination method with a lamination jig box, comprising the following steps: Step A, providing a plurality of lamination jig boxes 3, each lamination jig box 3 being used to accommodate a plurality of laminates 1 for feeding. Step B, sequentially evacuating and preheating the laminates 1 in each lamination jig box 3. For example, the vacuum degree may be about 740Hg / mm, and preheating means: the temperature may be about 35~40°C. Step C, sequentially subjecting the laminates 1 in each lamination jig box 3 to high pressure and high temperature. For example, high pressure means: the pressure may be about 250~500psi, and high temperature means: the temperature may be about 180~220°C. Step F, sequentially cooling the laminates 1 in each lamination jig box 3. For example, cooling the laminates 1 in each lamination jig box 3 to about 50°C. In step G, the stacked plates 1 in each pressing jig box 3 are solidified to form a plurality of substrates covered with cushion materials for unloading, wherein the stacked plates 1 in each pressing jig box 3 complete steps A to C and F to G in sequence.

[0052] The lamination pressing method further comprises: step H, returning the empty box of the pressing jig box 3 in step G to step A for use.

[0053] The laminate lamination method with a lamination jig box of the present invention is a mobile lamination process. A single lamination jig box contains a plurality of laminates (the number of the laminates is less than 10), and each of the laminates contains moves with the machine of the mobile lamination process (i.e., the first, second, and fifth process machines of the laminate lamination system of the second embodiment of the present invention). This can reduce the scrapping of a large number of substrate products covered with cushion materials caused by abnormalities of a single machine in the prior art, thereby improving production efficiency. Furthermore, if any of the first, second, and fifth process machines of the laminate lamination system fails, only the failed machine needs to be repaired, thereby reducing the repair time.

[0054] In summary, the present invention only records the preferred implementation methods or embodiments of the technical means used to solve the problem, and is not intended to limit the scope of the patent implementation of the present invention. That is, all equivalent changes and modifications that are consistent with the scope of the patent application of the present invention or made according to the scope of the patent application of the present invention are covered by the patent scope of the present invention.

Claims

1. A laminate pressing system with a pressing jig box, characterized in that: include: A plurality of empty boxes of pressing jig boxes, each of which is used to accommodate a plurality of stacked plates, the number of which is less than 10; A first process machine, used to sequentially perform a vacuuming step and a preheating step on the stacked plates in each pressing jig box; A second process machine connected to the first process machine and used to sequentially perform a high pressure step and a high temperature step on the stacked plates in each pressing jig box; A third process machine, for sequentially performing a high pressure step and a post-baking step on the laminates in each pressing jig box; a fourth process machine for sequentially performing a post-baking step on the stacked plates in each pressing jig box; and a fifth process machine connected to the second process machine and used to sequentially perform cooling steps on the stacked plates in each pressing jig box; The fifth process tool is connected to the second process tool via the third process tool and the fourth process tool; The empty boxes of the pressing jig boxes and the stacked plates are sequentially subjected to the vacuuming and preheating steps of the first process machine, the high pressure and high temperature steps of the second process machine, the high pressure and post-baking steps of the third process machine, the post-baking steps of the fourth process machine, and the cooling steps of the fifth process machine, and then the empty boxes of the pressing jig boxes are reflowed for use.

2. The laminate pressing system with a pressing jig box according to claim 1, characterized in that: The pressing jig box is made of a rigid heat-resistant material.

3. The laminate pressing system with a pressing jig box as claimed in claim 2, characterized in that: The pressing jig box comprises an upper cover and a hollow body. A space is defined between the upper cover and the hollow body for stacking and accommodating the stacked plates.

4. The laminated plate pressing system with a pressing jig box according to claim 1, characterized in that: The number of the stacked plates is between 3 and 5.

5. A lamination method with a lamination jig box, characterized in that: The following steps are involved: Step A, providing a plurality of empty pressing jig boxes, each of which is used to accommodate a plurality of stacked plates for feeding, wherein the number of the stacked plates is less than 10; Step B, sequentially evacuating and preheating the stacked plates in each pressing jig box; Step C, sequentially subjecting the stacked plates in each pressing jig box to high pressure and high temperature; Step D, sequentially subjecting the laminates in each pressing jig box to high pressure and post-baking; Step E, post-baking the stacked plates in each pressing jig box in sequence; Step F, sequentially cooling the stacked plates in each pressing jig box; as well as Step G, sequentially curing the stacked plates in each pressing jig box to form a plurality of substrates covered with cushion materials for unloading, wherein the stacked plates in each pressing jig box complete the above steps sequentially; The empty boxes of the pressing jig boxes and the stacked plates are sequentially subjected to the feeding of step A, the vacuuming and preheating of step B, the high pressure and high temperature of step C, the high pressure and post-baking of step D, the post-baking of step E, the cooling of step F, and the discharging of step G, and then the empty boxes of the pressing jig boxes are returned to step A for use.

6. The laminate lamination method with a lamination jig box as claimed in claim 5, characterized in that: The pressing jig box is made of a rigid heat-resistant material.

7. The laminate lamination method with a lamination jig box as claimed in claim 5, characterized in that: The number of the stacked plates is between 3 and 5.

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