A circuit board lamination process

Abstract

The present application relates to the field of circuit board production, and particularly relates to a circuit board laminating process. The present application relates to a circuit board laminating process, which uses a circuit board laminating machine to laminate a multilayer circuit board. The laminating machine automatically pulls out the roll-shaped prepreg and alternately stacks the inner core board between four L-shaped limiting rods. The pressing plate presses the sequentially stacked inner core board and prepreg together, and the cutting knife cuts the prepreg on both sides, reducing the waste of prepreg material. The laminating process overcomes the poor placement accuracy in the process of alternately stacking the multilayer inner core board and the multilayer prepreg. Generally, after stacking, the edges of the standard size are cut according to the standard size, forming a standard size product. This processing method causes the waste of prepreg and inner core board material around the product.

Description

Technical Field

[0001] This invention relates to the field of circuit board manufacturing, and more particularly to a circuit board lamination process. Background Technology

[0002] In the lamination process of multilayer circuit boards, multiple inner core boards and multiple prepregs need to be stacked alternately. This step requires manual stacking, but manual stacking is inefficient and has poor placement accuracy. It cannot guarantee that the edges of each inner core board and prepreg are aligned with each other. Therefore, the common solution in the existing technology is to make the area of ​​each prepreg and inner core board exceed the standard area size. After stacking, the excess area is cut according to the standard size edge area to form a stacked state with standard size and accurate edge alignment. This method is effective, but it will cause waste of prepreg and inner core board material around the finished product. Summary of the Invention

[0003] To overcome the shortcomings of poor placement accuracy in the process of alternately stacking multiple inner core boards and multiple prepregs, which leads to the use of materials exceeding the standard area for stacking and then cutting off the excess to pursue stacking accuracy, resulting in the waste of a large amount of prepreg and inner core board material, this invention provides a circuit board lamination process.

[0004] The technical solution is as follows: A circuit board lamination process, which uses a circuit board laminator to laminate multi-layer circuit boards. The circuit board laminator includes a support platform, a waste bin, a press, a pressure plate, a cutter, an electric unwinding roller, a prepreg, electric double conveyor rollers, an L-shaped limit rod, a connecting frame, a lower electric push rod, and a traction assembly. A press is mounted on the support platform; a pressure plate is provided on the lower pressing component of the press; a cutter is fixedly connected to the left and right sides of the pressure plate; an electric unwinding roller is mounted on the support platform; a roll of prepreg is wound on the electric unwinding roller; the support platform... The device is equipped with two electrically driven conveyor rollers for conveying prepreg; four L-shaped limit rods arranged in a matrix are slidably connected to the support platform; a connecting frame is fixedly connected to the four L-shaped limit rods; a lower electric push rod is installed on the support platform to drive the connecting frame to move up and down; the telescopic end of the lower electric push rod is fixedly connected to the connecting frame; the L-shaped limit rods have a cutting groove structure aligned with the cutter; a pulling assembly that pulls out the prepreg is connected between the two front L-shaped limit rods; a pulling assembly that pulls out the prepreg is also connected between the two rear L-shaped limit rods.

[0005] Preferably, a heater is installed inside the pressure plate to heat the inner core board.

[0006] Preferably, the electric dual conveyor roller consists of two electric conveyor roller bodies, and both electric conveyor roller bodies are integrated with heating modules for preheating the semi-cured sheet.

[0007] Preferably, the traction assembly includes a horizontal rail, an electric slider, an electric lift, and a movable suction cup; the horizontal rail is fixedly connected between the two L-shaped limit rods; the electric slider is slidably connected to the horizontal rail; the electric lift is installed on the electric slider; and the movable suction cup is installed on the lifting component of the electric lift.

[0008] Preferably, a side plate is fixedly connected between the two L-shaped limiting rods on the front side; a side plate is also fixedly connected between the two L-shaped limiting rods on the rear side.

[0009] Preferably, the side panels are made of insulation board material.

[0010] Preferably, a temperature sensor is installed on the side panel.

[0011] Preferably, an upper electric push rod is installed on the pressure plate; a fixed frame is fixedly connected to the telescopic end of the upper electric push rod; at least two lifting suction cups are fixedly connected to the fixed frame; and through holes are opened in the pressure plate corresponding to the number and position of the lifting suction cups.

[0012] Preferably, the lifting suction cup is covered with heat-insulating material.

[0013] Preferably, a pressure sensor is installed at the upper end of the L-shaped limit rod.

[0014] Compared with the prior art, the present invention has the following advantages: The circuit board lamination process of the present invention is mainly based on a circuit board laminator to laminate multiple inner core boards and multiple prepreg sheets. The circuit board laminator described herein automatically pulls out the roll-shaped prepreg sheets and alternately stacks them with the inner core boards between four L-shaped limiting rods through a traction component. During this process, the press drives the pressure plate and the cutter to press the sequentially stacked inner core boards and prepreg sheets together. At the same time, the cutter cuts off both sides of the prepreg sheets, reducing the waste of prepreg sheet material and avoiding the phenomenon of inner core board misalignment that would result in cutting waste. It overcomes the technical disadvantage of poor placement accuracy in the process of alternately stacking multiple inner core boards and multiple prepreg sheets. Generally, after stacking, the edges are cut according to the standard size to form a standard finished product. This processing method will result in the waste of prepreg and inner core board material around the finished product. Attached Figure Description

[0015] Figure 1 A perspective view illustrating a circuit board laminator according to the present invention;

[0016] Figure 2 A perspective view of the laminating plate of a circuit board laminating machine according to the present invention;

[0017] Figure 3 A perspective view illustrating the electric unwinding roller of a circuit board laminator according to the present invention;

[0018] Figure 4 A perspective view illustrating an electrically driven double conveyor roller of a circuit board laminator according to the present invention;

[0019] Figure 5 A perspective view illustrating the drawing assembly of a circuit board laminator according to the present invention;

[0020] Figure 6 This is a schematic diagram illustrating the sealed, insulated environment formed by the pressure plate, cutter, and side plate of a circuit board laminator according to the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1-Support platform, 11-Waste bin, 2-Press machine, 21-Pressure plate, 2101-Through hole structure, 22-Cutter, 23-Upper electric push rod, 24-Fixed frame, 25-Lifting suction cup, 31-Electric unwinding roller, 32-Pressurized sheet, 33-Electric double conveyor roller, 41-L-shaped limit rod, 410-Grooving structure, 42-Connecting frame, 43-Lower electric push rod, 44-Pressure sensor, 51-Horizontal rail, 52-Electric slider, 53-Electric lifting machine, 54-Moving suction cup, 61-Side plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1

[0024] A circuit board lamination process, which uses a circuit board laminator to laminate multiple circuit boards, wherein the circuit board laminator is, for example... Figures 1-6As shown, the assembly includes a support platform 1, a waste bin 11, a press 2, a pressure plate 21, a cutter 22, an electric unwinding roller 31, a prepreg 32, an electric double conveyor roller 33, an L-shaped limit rod 41, a connecting frame 42, a lower electric push rod 43, and a traction assembly. The press 2 is mounted on the support platform 1. A pressure plate 21 is mounted on the lower pressing component of the press 2. A heater is installed inside the pressure plate 21. A cutter 22 is fixed to the left and right sides of the pressure plate 21. An electric unwinding roller 31 is mounted on the left side of the support platform 1. A roll of prepreg 32 is wound on the electric unwinding roller 31. An electric double conveyor roller 33 for conveying the prepreg 32 is mounted on the support platform 1. It consists of two electric conveyor rollers, each of which integrates a heating module; four L-shaped limiting rods 41 in a matrix distribution are slidably connected on the support platform 1; a connecting frame 42 is fixedly connected between the four L-shaped limiting rods 41; a lower electric push rod 43 is installed at the bottom of the support platform 1; the telescopic end of the lower electric push rod 43 is fixedly connected to the connecting frame 42; the four L-shaped limiting rods 41 are provided with cutting groove structures 410 that are respectively aligned with the two cutters 22; a pulling assembly is connected between the two front L-shaped limiting rods 41; a pulling assembly is also connected between the two rear L-shaped limiting rods 41; a waste bin 11 is placed on the right side of the support platform 1.

[0025] like Figure 5 As shown, the traction assembly includes a horizontal rail 51, an electric slider 52, an electric lift 53, and a movable suction cup 54; the horizontal rail 51 is fixedly connected between two L-shaped limit rods 41; the electric slider 52 is slidably connected to the horizontal rail 51; the electric lift 53 is installed on the electric slider 52; the movable suction cup 54 is installed on the lifting component of the electric lift 53, and the movable suction cup 54 is externally connected to a vacuum suction machine.

[0026] like Figure 4 and Figure 5 As shown, a side plate 61 is fixedly connected between the two L-shaped limiting rods 41 on the front side; a side plate 61 is also fixedly connected between the two L-shaped limiting rods 41 on the rear side, and both side plates 61 are made of insulation board material; temperature sensors are installed on both side plates 61.

[0027] by Figure 1 The shapes and labels shown are for illustrative purposes only. The direction of the prepreg 32 relative to the electric dual conveyor roller 33 is to the left, and the direction of the movable suction cup 54 relative to the electric dual conveyor roller 33 is forward.

[0028] The operator stands in front of support platform 1 and pulls the free end of the prepreg 32, which is a cylindrical shape, from the electric unwinding roller 31 located on the left side of support platform 1 to the right. The prepreg passes between the two rollers of the electric double conveyor roller 33 and stops below the moving suction cup 54. This prepares the operator for the alternating stacking of multi-layer inner core boards and multi-layer prepreg 32 on support platform 1. First, the external robotic arm places an inner core board on support platform 1, aligning the four corners of the rectangular inner core board with the concave right angles of the four L-shaped limiting rods 41, thus securing the inner core board between the four L-shaped limiting rods 41. The upper surface of the L-shaped limiting rod 41 is initially flush with the upper surface of the inner core board. Then, the electric lifting machine 53 drives the movable suction cup 54 to move downward, allowing the external vacuum suction machine to pick up the free end of the semi-cured sheet 32 ​​that is passing between the electric double conveyor rollers 33 through the movable suction cup 54. Two movable suction cups 54 are symmetrically installed, each picking up a corner of the free end of the semi-cured sheet 32. Then, the electric slider 52 drives the movable suction cup 54 on the electric lifting machine 53 to move to the right along the horizontal rail 51, so that the movable suction cup 54 pulls the free end of the semi-cured sheet 32 ​​it picks up to the right. At the same time, the electric unwinding roller 31 rotates to unwind the roll of semi-cured sheet it is wound around. As sheet 32 ​​is released, the electric dual conveyor rollers 33 rotate synchronously to convey the released semi-cured sheet 32 ​​to the right. Simultaneously, the electric dual conveyor rollers 33 preheat the area through which the semi-cured sheet 32 ​​passes, increasing its temperature. This reduces the waiting time for the semi-cured sheet 32 ​​to heat up during subsequent hot-pressing processes. The process continues until the outer end of the semi-cured sheet 32 ​​is pulled to the right, completely covering the surface of the inner core board. At this point, the moving suction cup 54 and any excess semi-cured sheet 32 ​​are located between the inner core board and the waste bin 11. Then, the lower electric push rod 43 pulls the connecting frame 42, driving four... The L-shaped limiting rods 41 rise upwards, allowing the upper surfaces of the four L-shaped limiting rods 41 to protrude from the currently aligned inner core board surface, ready to receive the next inner core board. During this process, the four rising L-shaped limiting rods 41 will push the prepreg 32 above them. Therefore, the electric double conveyor rollers 33 need to rotate synchronously to continue conveying a small amount of prepreg 32 to the right, so that the length of the prepreg 32 that continues to be released can compensate for the height difference generated when the L-shaped limiting rods 41 push the prepreg 32 upwards, thereby ensuring that the area of ​​the prepreg 32 above the four L-shaped limiting rods 41 remains stationary relative to the L-shaped limiting rods 41.

[0029] Next, the external robotic arm aligns the next inner core board between the four L-shaped limiting rods 41, and places the inner core board downwards above the area where the prepreg 32 is pulled out, along the four L-shaped limiting rods 41. The inner core board then presses the corresponding area of ​​the prepreg 32 down onto the inner core board below it, clamping the prepreg 32 between the upper and lower inner core boards, with the two inner core boards aligned vertically. Then, the press 2 moves the pressure plate 21 and the cutter 22 downwards. The two cutters 22 cut into the corresponding cutting grooves 410 of the four L-shaped limiting rods 41, cutting the prepreg 32 in the left and right areas of the two inner core boards respectively. Since the prepreg 32 has the same front-to-back width as the inner core board, after the prepreg 32 is clamped in the inner core board, no further adjustments are needed. The prepreg 32 and the front and back sides of the inner core board are cut. At this time, only the prepreg 32 cut off in the right area of ​​the two inner core boards is redundant. The prepreg 32 in the left area of ​​the two inner core boards can be pulled out and used later. The prepreg 32 cut off between the two inner core boards fills the gap between the two inner core boards, reducing the waste of prepreg 32 material. Then, the electric slider 52 continues to drive the moving suction cup 54 on the electric lift 53 to move to the right along the horizontal rail 51 until the moving suction cup 54 drives the cut-off excess prepreg 32 to move to the right above the waste bin 11. Then, the external vacuum suction machine stops suction, allowing the excess prepreg 32 to fall off the moving suction cup 54 and fall into the waste bin 11 for recycling.

[0030] During the above process, the horizontal rail 51, electric slider 52, electric lift 53 and moving suction cup 54 will also rise, and the maximum distance of the rise will not exceed the movable range of the moving suction cup 54. The moving suction cup 54 will definitely be able to play the role of adhering to the free end of the semi-cured sheet 32.

[0031] After the alternating stacking of the multi-layer inner core board and the multi-layer prepreg 32 on the support platform 1 is completed, the press 2 drives the pressure plate 21 to press down on the uppermost surface of the first inner core board. Then the press 2 increases the downward pressure of the pressure plate 21 on the inner core board. At the same time, the heater built into the pressure plate 21 continuously heats the inner core board, so that the prepreg 32 is heated to a semi-molten and sticky state, thereby firmly pressing the multi-layer inner core board and the multi-layer prepreg 32 together. The pressure plate 21, the two cutters 22 and the two side plates 61 between the four L-shaped limit rods 41 together form a sealed and heat-insulating environment, reducing heat loss during the heat pressing process. The temperature sensor built into the side plate 61 monitors the temperature in the sealed and heat-insulating environment to determine whether the current temperature in the sealed and heat-insulating environment has reached the preset temperature value, further improving the firmness of the heat pressing of the multi-layer inner core board and the multi-layer prepreg 32 together.

[0032] Example 2

[0033] like Figures 1-5 As shown, based on Embodiment 1, this embodiment has two upper electric push rods 23 installed on the pressure plate 21; a fixed frame 24 is fixedly connected between the telescopic ends of the two upper electric push rods 23; four lifting suction cups 25 are fixedly connected to the fixed frame 24, and the lifting suction cups 25 are externally connected to a vacuum suction machine; the pressure plate 21 has through hole structures 2101 that correspond to the number and position of the lifting suction cups 25; and each lifting suction cup 25 has an outer wall covered with a ring of heat insulation material.

[0034] During the automated feeding process, after the first inner core board and prepreg 32 are placed, the external robotic arm first places the second inner core board to be placed tightly against the lower surface of the pressure plate 21. At the same time, the upper electric push rod 23 pulls the fixing frame 24, causing the four lifting suction cups 25 to be inserted downwards into the corresponding through-hole structures 2101 in the pressure plate 21. The external vacuum suction machine uses the lifting suction cups 25 to generate suction force on the inner core board tightly against the lower surface of the pressure plate 21, firmly holding it in place. Then, the external robotic arm releases the inner core board and moves away. At the same time, the pressure plate 21 uses the built-in heater to remove the inner core board. During the heating process, the lifting suction cup 25 is protected by the heat insulation material and is not affected by the heating of the pressure plate 21. While the inner core board is waiting to be placed, it is preheated, preventing it from directly heating up to the point of affecting the adhesion of the prepreg 32. This ensures that after all the inner core boards are placed, they are all at a temperature higher than the ambient temperature. As a result, when the final stacking is completed and the overall hot pressing is about to begin, the time it takes for the temperature of the inner core board to rise to the hot pressing working temperature is reduced, making use of the idle time that the inner core boards would otherwise be waiting to be placed, thus improving production efficiency.

[0035] Example 3

[0036] like Figures 1-5 As shown, based on Embodiment 1, each of the four L-shaped limiting rods 41 in this embodiment is equipped with a pressure sensor 44 at its upper end. During the process of the pressure plate 21 pressing down on the upper end of the L-shaped limiting rod 41, the pressure sensor 44 can monitor the downward pressure on the L-shaped limiting rod 41 from the pressure plate 21 in real time. When the pressure sensor 44 detects that the downward pressure on the L-shaped limiting rod 41 from the pressure plate 21 exceeds a specified range, the pressure sensor 44 feeds back the overload signal to the lower electric push rod 43 through the circuit system. The lower electric push rod 43 drives the L-shaped limiting rod 41 to move downward slightly, so that the L-shaped limiting rod 41 reduces the downward pressure it receives while maintaining its contact with the pressure plate 21, thus preventing the L-shaped limiting rod 41 from being subjected to large downward pressure for a long time, which could damage the connection between it and the lower electric push rod 43.

[0037] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.

Claims

1. A circuit board lamination process, wherein the process uses a circuit board laminator to laminate multiple circuit boards, characterized in that, The described circuit board laminator includes a support platform (1); a press (2) is mounted on the support platform (1); a pressure plate (21) is provided on the pressing part of the press (2); a cutter (22) is fixedly connected to the left and right sides of the pressure plate (21); an electric unwinding roller (31) is mounted on the support platform (1); a roll of semi-cured sheet (32) is wound on the electric unwinding roller (31); an electric double conveying roller (33) for conveying the semi-cured sheet (32) is mounted on the support platform (1); four L-shaped limiting rods (41) in a matrix state distribution are slidably connected to the support platform (1); the four L-shaped... A connecting frame (42) is fixedly connected between the limiting rods (41); a lower electric push rod (43) is installed on the support platform (1) to drive the connecting frame (42) to move up and down; the telescopic end of the lower electric push rod (43) is fixedly connected to the connecting frame (42); a cutting groove structure (410) is provided on the L-shaped limiting rod (41) and is aligned with the upper and lower of the cutter (22); a pulling assembly for pulling out the prepreg (32) is connected between the two front L-shaped limiting rods (41); a pulling assembly for pulling out the prepreg (32) is also connected between the two rear L-shaped limiting rods (41). An upper electric push rod (23) is installed on the pressure plate (21); a fixed frame (24) is fixedly connected to the telescopic end of the upper electric push rod (23); at least two lifting suction cups (25) are fixedly connected to the fixed frame (24); and a through hole structure (2101) is opened in the pressure plate (21) corresponding to the number and position of the lifting suction cups (25).

2. The circuit board lamination process according to claim 1, characterized in that, A heater is installed inside the pressure plate (21) to heat the inner core board.

3. The circuit board lamination process according to claim 1, characterized in that, The electric dual conveyor roller (33) consists of two electric conveyor roller bodies, and both electric conveyor roller bodies are integrated with heating modules for preheating the semi-cured sheet (32).

4. The circuit board lamination process according to claim 1, characterized in that, The traction assembly includes a horizontal rail (51); the horizontal rail (51) is fixedly connected between two L-shaped limit rods (41); an electric slider (52) is slidably connected on the horizontal rail (51); an electric lift (53) is installed on the electric slider (52); and a movable suction cup (54) is installed on the lifting component of the electric lift (53).

5. The circuit board lamination process according to claim 1, characterized in that, A side plate (61) is fixedly connected between the two L-shaped limiting rods (41) on the front side; a side plate (61) is also fixedly connected between the two L-shaped limiting rods (41) on the rear side.

6. The circuit board lamination process according to claim 5, characterized in that, The side panel (61) is made of insulation board material.

7. The circuit board lamination process according to claim 6, characterized in that, A temperature sensor is installed on the side plate (61).

8. The circuit board lamination process according to claim 1, characterized in that, The lifting suction cup (25) is covered with heat-insulating material.

9. A circuit board lamination process according to any one of claims 1-8, characterized in that, A pressure sensor (44) is installed at the upper end of the L-shaped limit rod (41).

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