A high-strength multilayer circuit board online lamination device and processing method

Abstract

The present invention relates to the field of circuit boards, and in particular to an online pressing device and processing method for high-strength multilayer circuit boards, including a base, a box, a box door, an air intake valve and a pressure relief valve; the box is fixedly connected to a plurality of bases; the box is rotatably connected to the box door; the box is fixedly connected to an air intake valve; the box is fixedly connected to a pressure relief valve; and also includes a U-shaped plate, an air bag strip, etc.; the box is fixedly connected to a U-shaped plate; the box is fixedly connected to a supporting plate, and the supporting plate is provided with a plurality of round holes; the box is fixedly connected to an air bag strip, and the air bag strip is located below the U-shaped plate, and an air cavity is formed between the U-shaped plate, the air bag strip and the box. When the pressing plate presses the circuit board body, the present invention presses the round rod at the same time, and the round rod presses the pressure sensor through the rectangular plate. After the pressure sensor is subjected to pressure, the external air pump controls the inflation amount of the air cavity, so that the pressing force of the air bag strip on the pressing plate is consistent each time, thereby making the pressing force of the pressing plate on the circuit board body consistent, thereby improving the pressing quality of the circuit board body.

Description

Technical Field

[0001] The invention relates to the field of circuit boards, and in particular to an online pressing device and a processing method for high-strength multi-layer circuit boards. Background Art

[0002] During the production process of PCB circuit boards, the inner lining board needs to be immersed in liquid for browning to improve the adhesion between the inner lining board and the PP sheet, and then the immersed inner lining board is stacked on the upper side of the cut PP sheet, and then the stacked inner lining board and PP sheet are put into a hot melt pressing machine for pressing. For example, the Chinese patent with publication number: CN113473712A discloses a circuit board pressing method, which can make the entire circuit board in the production process. The force point on the surface is the entire plane, making the pressing process more comprehensive, reducing the deformation and warping, and is very convenient. The quality of the pressed circuit board can be greatly improved. At the same time, the pressing plate is heated inside by multiple sets of heating rods, and then the heat is transferred to the circuit board, so that the heat conduction is faster during the pressing process and the pressing effect is better.

[0003] However, the airbag strips are inflated to expand and press the pressure plate, which then presses the circuit board. Since the airbag strips will age and become less elastic during use, and the force of the airbag strips' expansion is an uncertain force, the pressure applied by the airbag strips on the pressure plate will be different each time, resulting in different pressing forces of the pressure plate on the circuit board each time, reducing the pressing quality of the circuit board. Summary of the invention

[0004] In order to overcome the disadvantages that the air bag strip will age and weaken its elasticity during use, and the force of the air bag strip's expansion itself is an uncertain force, so that the pressure applied by the air bag strip to the pressing plate will be different each time, the present invention provides a high-strength multi-layer circuit board online pressing device and processing method.

[0005] The technical implementation scheme of the present invention is: a high-strength multi-layer circuit board online pressing device, including a base, a box body, a box door, an air intake valve and a pressure relief valve; the box body is fixedly connected to a plurality of bases; the box body is rotatably connected to the box door; the box body is fixedly connected to the air intake valve; the box body is fixedly connected to the pressure relief valve; it also includes a U-shaped plate, an air bag strip, a fixing block, a spring ball, a pressure plate, an electric push rod I, a connecting plate, a pressure sensor, a round rod, a rectangular plate and a hollow tube; the box body is fixedly connected to the U-shaped plate; the box body is fixedly connected to a supporting plate, and the supporting plate is provided with a plurality of round holes; the box body is fixedly connected to an air bag strip, and the air bag strip is located below the U-shaped plate, and an air cavity is formed between the U-shaped plate, the air bag strip and the box body; the box body is fixedly connected to the There are several fixed blocks; two fixed blocks are slidably connected with a pressure plate, and an insulation layer is arranged on the upper side of the pressure plate; several heating rods are arranged in the pressure plate; the two fixed blocks are respectively fixed with several spring balls, and the spring balls support the pressure plate; an electric push rod Ⅰ is fixedly connected to the box body; the telescopic end of the electric push rod Ⅰ is fixedly connected to a connecting plate; the connecting plate is fixedly connected to several pressure sensors; all the pressure sensors are fixedly connected to a rectangular plate; the rectangular plate is connected with several round rods, and the round rods pass through the supporting plate, and the positions and numbers of the round rods correspond to several positioning holes opened on the circuit board body; several hollow tubes are fixedly connected to the box body, and the hollow tubes are connected to the area between the pressure plate and the box body.

[0006] More preferably, the box body is provided with an annular groove; the box door is detachably connected with a sealing strip, and the sealing strip is embedded in the annular groove to enhance the sealing effect.

[0007] More preferably, the rectangular plate and the round rod are detachably connected.

[0008] More preferably, the pressing plate is provided with a plurality of fixing holes, and the round rods are pushed into the fixing holes.

[0009] More preferably, the end of the round rod is arranged in the form of a ball head.

[0010] More preferably, the round rod has a smooth surface.

[0011] More preferably, the pressing plate is arranged to be low in the middle and high on the left and right sides.

[0012] More preferably, it also includes an electric push rod II, a connecting block, a pressure rod and a spring rod; a plurality of electric push rods II are fixedly connected to the box body, and the telescopic end of the electric push rod II passes through the box body; the telescopic end of each electric push rod II is slidably connected to a connecting block; each connecting block is provided with a rectangular groove, and the telescopic end of the electric push rod II slides in the rectangular groove; all the connecting blocks are rotatably connected to a pressure rod; the supporting plate is provided with a plurality of sliding grooves; each sliding groove is slidably connected to a spring rod, and the telescopic end of the spring rod is fixedly connected to the corresponding connecting block.

[0013] More preferably, it also includes an electric push rod III and an absorption plate; a plurality of electric push rods III are fixedly connected to the box body, and the telescopic ends of the electric push rods III pass through the supporting plate; the telescopic ends of all the electric push rods III are commonly fixedly connected to the absorption plate, and the absorption plate is located in the box body, and the absorption plate is in contact with the circuit board body, and the absorption plate is in contact with the round rod.

[0014] More preferably, the processing method of the online pressing device for high-strength multi-layer circuit boards is as follows: 1. Control the external air pump to start, and slowly inflate the air cavity through the air inlet valve. The gas squeezes the air bag strip, causing the air bag strip to expand downward, and the air bag strip squeezes the pressure plate downward, and then the pressure plate performs hot-melt pressing on the circuit board body downward; 2. The round rod squeezes the pressure sensor through the rectangular plate, and after the pressure sensor is subjected to pressure, the external air pump controls the inflation amount of the air cavity, so that the squeezing force of the air bag strip on the pressure plate is consistent each time; 3. Open the pressure relief valve to discharge the gas in the air cavity, and control the electric push rod I to make the connecting plate drive the pressure sensor, the round rod and the rectangular plate to move upward, and then the round rod lifts the pressure plate upward, and the box door is opened manually to take out the pressed circuit board body.

[0015] Compared with the prior art, the present invention has the following advantages: when the pressing plate presses the circuit board body, the round rod is pressed at the same time, and the round rod presses the pressure sensor through the rectangular plate. After the pressure sensor is subjected to pressure, the external air pump controls the inflation amount of the air cavity, so that the pressing force of the air bag strip on the pressing plate is consistent each time, thereby making the pressing force of the pressing plate on the circuit board body consistent, thereby improving the pressing quality of the circuit board body.

[0016] The present invention controls the electric push rod II to make the connection block drive the pressure rod and the spring rod to move leftward, the spring rod slides in the slide groove, the pressure rod contacts the upper side of the circuit board body, the spring rod is stretched, and then the pressure rod rolls the upper side of the circuit board body to squeeze out the air contained in the circuit board body, thereby improving the pressing quality of the circuit board body.

[0017] When the pressure rod rolls the upper side of the circuit board body, the electric push rod III is controlled to drive the absorption plate to fit the edge of the circuit board body and the outer wall of the round rod to move back and forth up and down, and then the absorption plate absorbs the browning liquid flowing down the edge of the circuit board body and the browning liquid attached to the outer wall of the round rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure disclosed in the online pressing device and processing method of a high-strength multi-layer circuit board of the present invention;

[0019] Figure 2 It is a schematic diagram of the combined partial structure of the box body, the box door, and the U-shaped plate disclosed in the online pressing device and processing method of the high-strength multi-layer circuit board of the present invention;

[0020] Figure 3It is a schematic diagram of the combined partial structure of the box, air inlet valve, U-shaped plate, pressing plate, and electric push rod I disclosed in the online pressing device and processing method of the high-strength multi-layer circuit board of the present invention;

[0021] Figure 4 It is a schematic diagram of the combined partial structure of the box, air inlet valve, pressure relief valve, U-shaped plate, air bag strip, fixing block, spring ball, pressing plate, electric push rod I, connecting plate, pressure sensor, round rod, and rectangular plate disclosed in the online pressing device and processing method of the high-strength multi-layer circuit board of the present invention;

[0022] Figure 5 It is a schematic diagram of the combined partial structure of the box, air bag strip, fixing block, spring ball, pressing plate, electric push rod I, connecting plate and pressure sensor disclosed in the online pressing device and processing method of the high-strength multi-layer circuit board of the present invention;

[0023] Figure 6 It is a schematic diagram of the combined partial structure of the pressing plate disclosed in the online pressing device and processing method for high-strength multi-layer circuit boards of the present invention;

[0024] Figure 7 It is a schematic diagram of the combined partial structure of the box, electric push rod II, connecting block, pressure rod, spring rod and absorption plate disclosed in the online pressing device and processing method of the high-strength multi-layer circuit board of the present invention;

[0025] Figure 8 The present invention is a schematic diagram of the combined partial structure of the box, electric push rod II, connecting block, pressure rod and spring rod disclosed in the online pressing device and processing method of the high-strength multi-layer circuit board of the present invention.

[0026] The markings of the components in the accompanying drawings are as follows: 1-base, 2-box, 3-box door, 4-inlet valve, 5-pressure relief valve, 6-circuit board body, 101-U-shaped plate, 102-air bag strip, 103-fixing block, 104-spring ball, 105-pressure plate, 106-electric push rod I, 107-connecting plate, 108-pressure sensor, 109-round rod, 1010-rectangular plate, 1011-hollow tube, 201-electric push rod II, 202-connecting block, 203-pressure rod, 204-spring rod, 205-electric push rod III, 206-absorption plate, 11-air cavity, 21-annular groove, 22-slide groove, 23-support plate, 31-sealing strip, 61-positioning hole, 1051-fixing hole, 2021-rectangular groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1: A high-strength multi-layer circuit board online pressing device, such as Figure 1-8 As shown, it includes a base 1, a box body 2, a box door 3, an air inlet valve 4 and a pressure relief valve 5; the box body 2 is fixedly connected to a plurality of bases 1; the box body 2 is rotatably connected to the box door 3; the box body 2 is fixedly connected to the air inlet valve 4; the box body 2 is fixedly connected to the pressure relief valve 5;

[0029] It also includes a U-shaped plate 101, an airbag strip 102, a fixed block 103, a spring ball 104, a pressure plate 105, an electric push rod Ⅰ106, a connecting plate 107, a pressure sensor 108, a round rod 109, a rectangular plate 1010 and a hollow tube 1011; the rectangular circuit board body 6 is composed of an upper lining plate and a lower multi-layer PP sheet, and a plurality of positioning holes 61 are provided on the edge of the circuit board body 6; the box body 2 is fixedly connected to the U-shaped plate 101; the box body 2 is fixedly connected to a supporting plate 23, and the supporting plate 23 is provided with a plurality of round holes; the box body 2 is fixedly connected to an airbag strip 102, and the airbag strip 102 is located below the U-shaped plate 101, and an air cavity 11 is formed between the U-shaped plate 101, the airbag strip 102 and the box body 2; the box body 2 is fixedly connected to two fixed blocks 103 distributed on the left and right; the two fixed blocks 103 are slidably connected to the pressure plate 105, and a heat insulation layer is arranged on the upper side of the pressing plate 105; a plurality of heating rods are arranged inside the pressing plate 105; the two fixing blocks 103 are each fixedly connected with a plurality of spring balls 104, and the spring balls 104 support the pressing plate 105; the box body 2 is bolted with an electric push rod Ⅰ106; the telescopic end of the electric push rod Ⅰ106 is fixedly connected with a connecting plate 107; the connecting plate 107 is fixedly connected with two pressure sensors 108; all the pressure sensors 108 are fixedly connected with a rectangular plate 1010; the rectangular plate 1010 is connected with a plurality of round rods 109 distributed in a rectangular shape, and the round rods 109 pass through the supporting plate 23, and the positions and numbers of the round rods 109 correspond to the plurality of positioning holes 61 opened in the circuit board body 6; the box body 2 is fixedly connected with a plurality of hollow tubes 1011, and the hollow tubes 1011 are connected with the area between the pressing plate 105 and the box body 2.

[0030] The box body 2 is provided with an annular groove 21; the box door 3 is detachably connected with a sealing strip 31, and the sealing strip 31 is embedded in the annular groove 21 to enhance the sealing effect. Since the inside of the box body 2 needs to be heated repeatedly when the circuit board body 6 is pressed, the sealing strip 31 needs to be replaced in time. Compared with the existing sealed door, it is convenient to quickly replace the sealing strip 31.

[0031] The rectangular plate 1010 and the round rod 109 are detachably connected.

[0032] The pressing plate 105 is provided with a plurality of fixing holes 1051 , and the round rods 109 are pushed into the fixing holes 1051 .

[0033] The end of the round rod 109 is configured as a ball head, so that the round rod 109 can be easily inserted into the positioning hole 61 , thereby preventing the multi-layer PP sheet in the circuit board body 6 from being squeezed when the round rod 109 is inserted into the positioning hole 61 .

[0034] The surface of the round rod 109 is smooth, thereby preventing the round rod 109 from generating relative friction with the inner wall of the positioning hole 61 when moving vertically, thereby preventing the positioning hole 61 from being worn.

[0035] The round rod 109 is made of heat-insulating material to prevent the heat generated by the pressing plate 105 from being directly transferred to the PP sheet through the round rod 109, so that the PP sheet is excessively heated and the quality of the pressing is reduced.

[0036] The pressing plate 105 is arranged to be low in the middle and high on the left and right sides.

[0037] When in use, first connect the external air pump to the air inlet valve 4, and connect the external vacuum pump to the hollow tube 1011. Initially, the upper end of the round rod 109 is flush with the upper inner side of the box body 2, and the pressure plate 105 is fixed between the two fixed blocks 103 under the support of the spring ball 104. Then, manually open the box door 3, and place the folded circuit board body 6 on the upper side of the support plate 23, and the circuit board body 6 is located below the pressure plate 105.

[0038] Next, the electric push rod Ⅰ106 is controlled to make the connecting plate 107 drive the pressure sensor 108, the rectangular plate 1010 and the round rod 109 to move upward, and the rectangularly distributed round rod 109 passes through the box body 2 and the supporting plate 23 and then passes through the positioning hole 61 on the circuit board body 6. Next, the external vacuum pump is controlled to evacuate the area between the bottom of the pressure plate 105 and the upper side of the supporting plate 23 through the hollow tube 1011, and then the area between the bottom of the pressure plate 105 and the upper side of the supporting plate 23 is evacuated into a vacuum state. Next, the external air pump is controlled to start, and the air cavity 11 is slowly inflated through the air inlet valve 4. The gas squeezes the air bag strip 102, causing the air bag strip 102 to expand downward, and the air bag strip 102 presses the pressure plate 105 The pressing plate 105 is pressed downward, and the spring ball 104 is compressed, and then the pressing plate 105 slides downward on the fixed block 103, and the heating rod in the pressing plate 105 is powered on and heated, and then the pressing plate 105 performs hot-melt pressing on the circuit board body 6 downward, and the heat insulation layer on the upper side of the pressing plate 105 insulates the air bag strip 102, and the area between the bottom of the pressing plate 105 and the upper side of the supporting plate 23 is evacuated, so that the heat of the pressing plate 105 is completely transferred to the copper foil solder on the circuit board body 6, which is quickly melted by heat conduction. There is no outside air in the vacuum state, thereby avoiding the phenomenon that the heating rod in the pressing plate 105 transfers heat to the outside air, thereby improving the heat utilization rate of the heating rod.

[0039] When the pressing plate 105 presses the circuit board body 6, it also presses the round rod 109, and the round rod 109 presses the pressure sensor 108 through the rectangular plate 1010. After the pressure sensor 108 is pressurized, it controls the external air pump to inflate the air cavity 11, so that the pressing force of the air bag strip 102 on the pressing plate 105 is consistent each time, thereby making the pressing force of the pressing plate 105 on the circuit board body 6 consistent, thereby improving the pressing quality of the circuit board body 6.

[0040] After the pressing is completed, the pressure relief valve 5 is opened to discharge the gas in the air cavity 11, the air bag strip 102 shrinks and recovers, and the air bag strip 102 stops squeezing the pressure plate 105. Then, the electric push rod Ⅰ106 is controlled to make the connecting plate 107 drive the pressure sensor 108, the round rod 109 and the rectangular plate 1010 to move upward, and then the round rod 109 pushes the pressure plate 105 upward, and the pressure plate 105 is separated from the circuit board body 6 until the lower side of the pressure plate 105 is higher than the spring ball 104, and then the spring ball 104 supports and fixes the pressure plate 105. Then, the electric push rod Ⅰ106 makes the connecting plate 107 drive the pressure sensor 108, the round rod 109 and the rectangular plate 1010 to move downward until the upper end of the round rod 109 is flush with the upper side of the box body 2. Then, the box door 3 is manually opened to take out the pressed circuit board body 6.

[0041] When different types of circuit board bodies 6 need to be pressed together, since the number and positions of the positioning holes 61 on the circuit board bodies 6 of different types are inconsistent, the round rod 109 is manually disassembled and replaced according to the positions of the positioning holes 61 on the circuit board bodies 6 to adapt to different types of circuit board bodies 6 and improve applicability.

[0042] Since the position and number of the round rods 109 correspond to the several positioning holes 61 opened in the circuit board body 6, the round rods 109 are inserted into the positioning holes 61 when moving upward, thereby positioning the stacked multi-layer PP sheets and the inner lining board of the circuit board body 6, thereby avoiding manual deviation when the stacked circuit board body 6 is placed on the upper side of the box body 2, thereby affecting the pressing quality of the circuit board body 6, and when the pressing plate 105 is pressed down, the fixing holes 1051 correspond to the round rods 109, thereby improving the stability of the pressing of the circuit board body 6 by the pressing plate 105, thereby avoiding deviation of the pressing plate 105 on the upper side of the circuit board body 6.

[0043] The pressing plate 105 is provided with a plurality of fixing holes 1051, and the round rod 109 is pushed into the fixing hole 1051. When the pressing plate 105 is pressed down and contacts the round rod 109, the positions of the round rod 109 and the fixing hole 1051 correspond to each other, thereby enhancing the accuracy of the pressing position of the circuit board body 6 when the pressing plate 105 moves down.

[0044] When the airbag strip 102 expands slowly, the middle part of the airbag strip 102 first contacts the upper side of the pressure plate 105, and then the force on the middle part of the pressure plate 105 is greater than the force on the left and right sides, which makes the pressing force of the pressure plate 105 on the circuit board body 6 uneven. Therefore, the pressure plate 105 is set low in the middle and high on the left and right sides, so that the airbag strip 102 can evenly contact the upper side of the pressure plate 105 after expansion, and then a relatively uniform pressing force is applied to the upper side of the pressure plate 105, thereby improving the pressing quality of the pressure plate 105 on the circuit board body 6.

[0045] Embodiment 2: Based on embodiment 1, Figure 1 and Figure 7-8 As shown, it also includes an electric push rod II 201, a connecting block 202, a pressure rod 203 and a spring rod 204; the box body 2 is bolted with two electric push rods II 201, and the telescopic end of the electric push rod II 201 passes through the box body 2; the telescopic end of each electric push rod II 201 is slidably connected to a connecting block 202; each connecting block 202 is provided with a rectangular groove 2021, and the telescopic end of the electric push rod II 201 slides in the rectangular groove 2021; all the connecting blocks 202 are rotatably connected to a pressure rod 203; the supporting plate 23 is provided with a plurality of slide grooves 22; each slide groove 22 is slidably connected to a spring rod 204, and the telescopic end of the spring rod 204 is fixedly connected to the corresponding connecting block 202.

[0046] The pressure rod 203 is made of rubber, which increases the rolling friction of the pressure rod 203 on the upper side of the circuit board body 6 and prevents the pressure rod 203 from slipping on the upper side of the circuit board body 6 .

[0047] After the inner lining plate and the PP sheet are manually stacked to form the circuit board body 6, air will remain inside the circuit board body 6, which will affect the pressing quality of the circuit board body 6. Initially, the pressing plate 105 is located in the right angle area below the fixed block 103, and the spring rod 204 is in a compressed state. Therefore, before the pressing plate 105 moves down and the round rod 109 completely passes through the positioning hole 61, the electric push rod II 201 is controlled to make the connecting block 202 drive the pressing rod 203 and the spring rod 204 to move to the left, and the spring rod 204 slides in the slide groove 22. The pressing rod 203 contacts the upper side of the circuit board body 6, and the spring rod 204 is stretched, and then the pressing rod 203 rolls the upper side of the circuit board body 6 to squeeze out the mixed air inside the circuit board body 6, thereby improving the pressing quality of the circuit board body 6.

[0048] Embodiment 3: Based on embodiment 2, Figure 5 and Figure 7-8 As shown, it also includes an electric push rod III 205 and an absorption plate 206; the box body 2 is bolted with a plurality of electric push rods III 205, and the telescopic ends of the electric push rods III 205 pass through the supporting plate 23; the telescopic ends of all the electric push rods III 205 are commonly fixed with the absorption plate 206, and the absorption plate 206 is located in the box body 2, and the absorption plate 206 is in contact with the circuit board body 6, and the absorption plate 206 is in contact with the round rod 109.

[0049] The processing method of the high-strength multi-layer circuit board online pressing device is as follows: 1. Control the external air pump to start, and slowly inflate the air cavity 11 through the air inlet valve 4, and the gas squeezes the air bag strip 102, so that the air bag strip 102 expands downward, and the air bag strip 102 squeezes the pressure plate 105 downward, and then the pressure plate 105 performs hot-melt pressing on the circuit board body 6 downward; 2. The round rod 109 squeezes the pressure sensor 108 through the rectangular plate 1010, and the pressure sensor 108 controls the inflation amount of the air cavity 11 by the external air pump after being subjected to pressure, so that the squeezing force of the air bag strip 102 on the pressure plate 105 is consistent each time; 3. Open the pressure relief valve 5 to discharge the gas in the air cavity 11, control the electric push rod Ⅰ106 to make the connecting plate 107 drive the pressure sensor 108, the round rod 109 and the rectangular plate 1010 to move upward, and then the round rod 109 pushes the pressure plate 105 upward, and manually open the box door 3 to take out the pressed circuit board body 6.

[0050] Since the inner lining board on the upper side of the circuit board body 6 will have residual browning liquid after browning, when the upper side of the circuit board body 6 is pressed by the pressure rod 203, the browning liquid in the circuit board body 6 will flow down along the edge of the circuit board body 6 and adhere to the outer wall of the round rod 109, making subsequent cleaning difficult. Therefore, when the pressure rod 203 rolls the upper side of the circuit board body 6, the electric push rod III 205 is controlled to drive the absorption plate 206 to fit the edge of the circuit board body 6 and the outer wall of the round rod 109 to move back and forth up and down, and then the absorption plate 206 absorbs the browning liquid flowing down the edge of the circuit board body 6 and the browning liquid adhered to the outer wall of the round rod 109.

[0051] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims

1. A high-strength multi-layer circuit board online pressing device, characterized by: The invention comprises a base (1), a box body (2), a box door (3), an air intake valve (4) and a pressure relief valve (5); the box body (2) is fixedly connected to a plurality of bases (1); the box body (2) is rotatably connected to the box door (3); the box body (2) is fixedly connected to the air intake valve (4); the box body (2) is fixedly connected to the pressure relief valve (5); and further comprises a U-shaped plate (101), an air bag strip (102), a fixing block (103), a spring ball (104), a pressure plate (105), an electric push rod I (106), a connecting plate (107), a pressure sensor ( 108), a round rod (109), a rectangular plate (1010) and a hollow tube (1011); the box body (2) is fixedly connected to a U-shaped plate (101); the box body (2) is fixedly connected to a supporting plate (23), and the supporting plate (23) is provided with a plurality of circular holes; the box body (2) is fixedly connected to an air bag strip (102), and the air bag strip (102) is located below the U-shaped plate (101), and an air cavity (11) is formed between the U-shaped plate (101), the air bag strip (102) and the box body (2); the box body (2) is fixedly connected to a plurality of fixing blocks ( 103); the two fixed blocks (103) are slidably connected to a pressing plate (105), and a heat insulating layer is provided on the upper side of the pressing plate (105); a plurality of heating rods are provided in the pressing plate (105); the two fixed blocks (103) are each fixedly connected to a plurality of spring balls (104), and the spring balls (104) support the pressing plate (105); the box body (2) is fixedly connected to an electric push rod I (106); the telescopic end of the electric push rod I (106) is fixedly connected to a connecting plate (107); the connecting plate (107) is fixedly connected to a plurality of pressure sensors (108); all the pressure sensors (108) are fixedly connected to a rectangular plate (1010); the rectangular plate (1010) is connected to a plurality of round rods (109), and the round rods (109) pass through the supporting plate (23), and the positions and numbers of the round rods (109) correspond to a plurality of positioning holes (61) provided on the circuit board body (6); the box body (2) is fixedly connected to a plurality of hollow tubes (1011), and the hollow tubes (1011) are connected to the area between the pressure plate (105) and the box body (2).

2. A high-strength multi-layer circuit board online pressing device according to claim 1, characterized in that: The box body (2) is provided with an annular groove (21); the box door (3) is detachably connected with a sealing strip (31), and the sealing strip (31) is embedded in the annular groove (21) to enhance the sealing effect.

3. A high-strength multi-layer circuit board online pressing device according to claim 1, characterized in that: The rectangular plate (1010) and the round rod (109) are detachably connected.

4. A high-strength multi-layer circuit board online pressing device according to claim 1, characterized in that: The pressing plate (105) is provided with a plurality of fixing holes (1051), and the round rod (109) is pushed into the fixing holes (1051).

5. A high-strength multi-layer circuit board online pressing device according to claim 1, characterized in that: The end of the round rod (109) is arranged in the form of a ball head.

6. A high-strength multi-layer circuit board online pressing device according to claim 1, characterized in that: The surface of the round rod (109) is smooth.

7. A high-strength multi-layer circuit board online pressing device according to claim 1, characterized in that: The pressing plate (105) is arranged with a lower middle portion and higher left and right sides.

8. A high-strength multi-layer circuit board online pressing device according to claim 7, characterized in that: The invention also comprises an electric push rod II (201), a connecting block (202), a pressure rod (203) and a spring rod (204); a plurality of electric push rods II (201) are fixedly connected to the box body (2), and the telescopic end of the electric push rod II (201) passes through the box body (2); the telescopic end of each electric push rod II (201) is slidably connected to a connecting block (202); each connecting block (202) is provided with a rectangular groove (2021), and the telescopic end of the electric push rod II (201) slides in the rectangular groove (2021); all the connecting blocks (202) are rotatably connected to a pressure rod (203); the supporting plate (23) is provided with a plurality of sliding grooves (22); each sliding groove (22) is slidably connected to a spring rod (204), and the telescopic end of the spring rod (204) is fixedly connected to the corresponding connecting block (202).

9. A high-strength multi-layer circuit board online pressing device according to claim 8, characterized in that: It also includes an electric push rod III (205) and an absorption plate (206); a plurality of electric push rods III (205) are fixedly connected to the box body (2), and the telescopic ends of the electric push rods III (205) pass through the support plate (23); the telescopic ends of all the electric push rods III (205) are commonly fixedly connected to the absorption plate (206), and the absorption plate (206) is located in the box body (2), and the absorption plate (206) is in contact with the circuit board body (6), and the absorption plate (206) is in contact with the round rod (109).

10. A method for online lamination of a high-strength multilayer circuit board, using the online lamination device of a high-strength multilayer circuit board according to claim 9, the steps of which are as follows:

1. Controlling the start of an external air pump, slowly inflating the air cavity (11) through the air inlet valve (4), the gas presses the air bag strip (102), causing the air bag strip (102) to expand downward, the air bag strip (102) presses the pressing plate (105) downward, and then the pressing plate (105) performs hot-melt lamination on the circuit board body (6) downward; Second, the round rod (109) presses the pressure sensor (108) through the rectangular plate (1010). After the pressure sensor (108) is pressurized, the external air pump controls the amount of air inflated into the air cavity (11), so that the squeezing force of the air bag strip (102) on the pressure plate (105) is consistent each time; 3. Open the pressure relief valve (5) to discharge the gas in the air cavity (11), control the electric push rod I (106) to make the connecting plate (107) drive the pressure sensor (108), the round rod (109) and the rectangular plate (1010) to move upward, and then the round rod (109) pushes the pressing plate (105) upward, manually open the box door (3), and take out the pressed circuit board body (6).

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