Automatic press-fitting and conveying equipment for PCB (Printed Circuit Board)

Abstract

The invention relates to the technical field of circuit board hot-pressing conveying, in particular to PCB automatic press-fitting conveying equipment which comprises two supporting frames placed on the existing ground, the two supporting frames are symmetrically arranged, a U-shaped box is jointly installed between the two supporting frames, and a plurality of concentric-square-shaped frames arranged at equal intervals are slidably installed between the two supporting frames through electric sliding blocks. When the PCB is subjected to hot pressing, the side edges of the PCB can be effectively pressed, sliding and edge warping of the PCB are avoided when the PCB is subjected to press fitting, the PCB cannot be attached to the hot pressing unit when the hot pressing unit moves upwards to cancel hot pressing on the circuit board and the hot pressing unit is integrally lifted, and the PCB cannot be damaged during hot pressing. The cooling unit can be automatically started according to the work of the hot-pressing unit, and the cooling unit is synchronously suspended after the hot-pressing work is finished, so that the hot-pressing of the circuit board and the heat dissipation of the outside of the circuit board can be synchronously carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of PCB hot pressing and conveying, and specifically relates to a PCB automatic pressing and conveying device. Background Art

[0002] The Chinese name of PCB is printed circuit board, also known as printed wiring board, which is an important electronic component. When a PCB circuit board is hot pressed, it is a multi-layer laminate. If it is not pressed, it is easy for the multi-layer laminate to slide and misalign during hot pressing. And during hot pressing, it is necessary to quickly cool and dissipate heat on its outside to prevent the influence of thermal stress and material damage caused by overheating.

[0003] The prior art discloses a Chinese patent with the application number CN202311493871.7, a PCB circuit board pressing fixture, and discloses that the water in the water tank is extruded and flows out along the drain pipe into the cooling pipe. Through the flow of water in the cooling pipe, the heat on the lower die groove is adsorbed, so that the heat on the lower die groove is quickly reduced, avoiding the problem of deformation without pressing when the circuit board assembly is put on again when the heat on the lower die groove is too high.

[0004] Although the above device can achieve cooling during the pressing of the circuit board, there are still some defects in use:

[0005] 1. When the above device cools the circuit board, after the hot pressing component is turned on, the heat is adsorbed by the water flow to cool down. Therefore, cooling cannot be carried out at the first time of hot pressing, and hot pressing and cooling cannot be started synchronously;

[0006] 2. When hot pressing the circuit board, directly applying external force to press the circuit board will cause the circuit board to be pressed to slide, misalign, and warp. At the same time, one-piece covering hot pressing will cause too long heating time, and it is not easy for the circuit board to fall off the hot pressing device. Summary of the Invention

[0007] The purpose of the present invention is to provide a PCB automatic pressing and conveying device to solve the problems of automatically starting cooling when hot pressing and laminating the circuit board and avoiding adhesion between the circuit board after hot pressing and the hot pressing device as mentioned in the above background art.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] A PCB automatic press-fitting and conveying device includes a support frame placed on the existing ground. The support frames are symmetrically arranged in two, and a U-shaped box is jointly installed between the two support frames. A number of equally spaced circular frames are slidably installed between the two support frames through electric sliders. A cooling unit is arranged in the inner cavity of the circular frame. Above the circular frame, there is a hot pressing unit slidably connected to the U-shaped box through an electric slider. On both sides below the hot pressing unit, there are pressing units for pressing the edges of the PCB circuit board during hot pressing to prevent warping. A hole plate for placing the PCB circuit board during hot pressing and conveying is slidably installed on the inner wall of the circular frame. At the four corners of the lower end face of the hole plate, there are supporting components. On both sides of the circular frame, there are also starting and stopping components for controlling the cooling unit.

[0010] The cooling unit includes two transverse grooves correspondingly opened in the inner cavity of the circular frame. In the middle of the transverse grooves, two symmetrically arranged water tanks are fixedly installed. A threaded heat dissipation pipe is jointly installed in the middle of the two water tanks. On one side of the water tank, there is a cooling plate connected to the inner wall of the circular frame. A three-way pipe is jointly connected between the two water tanks and the cooling plate. A water pump for circulating water between the two water tanks and the cooling plate is arranged in the three-way pipe. Through grooves are opened on the circular frame on both sides of the cooling plate.

[0011] On both sides of the transverse groove, vertical grooves are opened in the inner cavity of the circular frame. On both sides of the vertical grooves, fans are fixedly installed. An air duct is jointly installed between the two fans. On one side of the air duct, a number of equally spaced blowing grooves opened on the inner wall of the circular frame are arranged, and the blowing grooves are communicated with the air duct.

[0012] The starting and stopping components include two compression boxes symmetrically installed in the transverse groove. A piston rod is slidably installed in the middle of the compression box. On one side of the piston rod located inside the compression box, a first solenoid valve is fixedly installed. On the other end of the piston rod, a driven wedge block is fixedly installed. A spring is sleeved outside the piston rod. A second solenoid valve is fixedly installed at the bottom of the inner cavity of the compression box. The second solenoid valve is electrically connected to the fan and the water pump. When the first solenoid valve and the second solenoid valve are in contact, the second solenoid valve controls the water pump and the fan to start working.

[0013] The supporting components include a gear rotatably installed outside the circular frame through a motor. Rack plates slidably connected to the circular frame are engaged with both the upper and lower sides of the gear. An installation plate is fixedly installed on one side of the rack plate. A telescopic plate is fixedly installed at one end of the installation plate. A cylinder is fixedly installed on one side of the upper end face of the telescopic plate. A stabilizing plate is fixedly installed at the top of the cylinder.

[0014] The hot pressing unit includes a lifting frame slidably connected to the U-shaped box through an electric slider. In the middle of the lower end face of the lifting frame, a covering plate is fixedly installed through an electric push plate. Below the covering plate, there is a rectangular frame. Two symmetrically arranged air bags are fixedly installed on the inner wall of the rectangular frame. The air bags are connected to the covering plate through connecting pipes. A motor is fixedly installed in the middle of the rectangular frame. A cam is fixedly installed at the output end of the motor.

[0015] Side hot pressing plates are slidably installed on both sides of the rectangular frame. A central hot pressing plate slidably connected to the rectangular frame is arranged between the two side hot pressing plates. Push-pull plates are hinged on both sides of the cam. One ends of the push-pull plates on both sides away from the cam are respectively hinged to the side hot pressing plates on both sides. Pressing plates are fixedly installed on the upper end surfaces of the side hot pressing plates.

[0016] The pressing unit includes two symmetrically arranged guiding frames. Two groups of symmetrically arranged built-in frames are jointly installed between the two guiding frames through electric sliders. A group of guiding frames are slidably installed between each group of built-in frames through electric sliders.

[0017] T-shaped parts are slidably installed in the guiding frames through electric sliders. Two corresponding pressing rollers are jointly rotatably installed between two corresponding T-shaped parts. A moving block slidably connected to the built-in frame through an electric slider is arranged on one side of the guiding frame. An electric push rod is fixedly installed on the lower end surface of the moving block. The telescopic end of the electric push rod is fixedly installed with a driving wedge block.

[0018] Grooves are formed around the inner wall of the U-shaped frame. Connecting plates are slidably installed in the grooves. An outer frame is jointly installed between the multiple connecting plates. The middle part of the inner wall of the outer frame is slidably connected to the hole plate through an electric slider.

[0019] The beneficial effects of the present invention:

[0020] 1. When the electric slider of the present invention is turned on, it drives multiple U-shaped frames to be sequentially conveyed to the lower part of the hot pressing unit, so that the hot pressing unit hot presses and mounts the PCB circuit boards placed in the U-shaped frames. And before the hot pressing unit hot presses the PCB circuit boards, the pressing unit can first contact both sides of the PCB circuit boards, so as to press both sides of the PCB circuit boards, preventing the PCB circuit boards from sliding and warping when the hot pressing unit hot presses the PCB circuit boards. It should be noted that when the pressing unit presses both sides of the PCB circuit board, the hot pressing unit hot presses the middle part of the PCB circuit board. After the hot pressing is completed, the pressing unit moves to cancel the hot pressing on the side of the circuit board. At this time, the hot pressing unit hot presses both sides of the PCB circuit board. Since the hot pressing unit has previously completed the hot pressing of the middle part of the PCB circuit board and the middle part of the circuit board has been bonded, when the two sides of the PCB circuit board are hot pressed, the PCB circuit board will not be displaced and slide. When the present invention hot presses the PCB circuit board, it can effectively press the sides of the circuit board, avoiding the sliding and warping of the circuit board when the PCB circuit board is pressed and mounted. And when the hot pressing unit moves up to cancel the hot pressing on the circuit board, when the hot pressing unit is lifted as a whole, it will not adhere the PCB circuit board to the hot pressing unit.

[0021] 2. The setting of the start-stop component of the present invention can automatically trigger the start-stop component when the hot pressing unit moves downward to hot press the PCB circuit board, so that the start-stop component opens the cooling unit. Thus, when the PCB circuit board is hot pressed, the outside of the circuit board is cooled, avoiding rapid reduction of the high temperature outside the circuit board after the hot pressing operation of the circuit board, preventing damage to the PCB circuit board caused by continuous high temperature, and facilitating the quick removal of the hot-pressed circuit board.

[0022] 3. When the electric slider of the present invention is opened and drives the lifting frame to move downward, the active wedge block moves downward synchronously to squeeze the driven wedge block. After being squeezed, the piston rod moves in the direction close to the second solenoid valve at this time. When the piston rod moves, it contacts the second solenoid valve through the first solenoid valve. At this time, the second solenoid valve is opened to control the opening of the fan and the water pump, thus completing the cooling operation during the hot pressing of the PCB circuit board. Compared with the existing hot pressing device, when the present invention hot presses the PCB circuit board, it can automatically turn on the cooling unit according to the operation of the hot pressing unit, and suspend the cooling unit synchronously after the hot pressing work is completed, truly meeting the simultaneous requirements of hot pressing the circuit board and dissipating heat from the outside of the circuit board.

[0023] 4. When the two side hot pressing plates of the present invention are continuously moving, the air bag is continuously squeezed by the pressing plate. The gas in the air bag is supplied to the covering plate, and finally the covering plate blows air to the surface of the PCB circuit board through the air outlet below, cooperating with the movement of the side hot pressing plates, which can on the one hand dissipate heat from the surface of the circuit board after hot pressing, and on the other hand avoid the hot pressing plate from adhering to the lower end surface of the side hot pressing plate during hot pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0025] Figure 1 is the overall structural schematic diagram of the present invention;

[0026] Figure 2 is the external structural schematic diagram of the return-shaped frame of the present invention;

[0027] Figure 3 is the bottom upward view structural schematic diagram of the return-shaped frame of the present invention;

[0028] Figure 4 is the top view structural schematic diagram of the return-shaped frame of the present invention;

[0029] Figure 5It is a schematic diagram of the internal structure of the transverse groove of the present invention;

[0030] Figure 6 It is a schematic diagram of the overall partial structure of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure between the hot pressing unit and the pressing unit of the present invention;

[0032] Figure 8 It is a schematic diagram of the hot pressing unit structure of the present invention;

[0033] Figure 9 It is a schematic diagram of the side sectional structure of the hot pressing unit of the present invention;

[0034] Figure 10 It is a schematic diagram of the partial structure of the pressing unit of the present invention.

[0035] The reference numerals in the figure are as follows:

[0036] 1, support frame; 10, U-shaped box; 11, return frame; 12, outer frame; 121, groove; 122, connecting plate; 13, perforated plate; 2, cooling unit; 21, transverse groove; 211, water tank; 212, threaded heat dissipation pipe; 213, cooling plate; 214, three-way pipe; 215, through groove; 22, vertical groove; 221, fan; 222, air duct; 223, blowing groove; 23, compression box; 231, piston rod; 232, first solenoid valve; 233, second solenoid valve; 234, driven wedge block; 24, gear; 241, rack plate; 242, mounting plate; 243, telescopic plate; 244, cylinder; 245, stabilizing plate; 3, hot pressing unit; 31, lifting frame; 32, covering plate; 33, rectangular frame; 331, air bag; 34, motor; 35, cam; 36, push-pull plate; 37, side hot pressing plate; 371, pressing plate; 38, central hot pressing plate; 4, pressing unit; 41, guiding frame; 42, built-in frame; 43, guiding frame; 44, T-shaped part; 45, pressing roller; 46, moving block; 461, electric push rod; 462, driving wedge block. Detailed implementation manners

[0037] 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.

[0038] As shown in the appendix Figure 1-10As shown in the figure, a PCB automatic press-fitting and conveying device includes a support frame 1 placed on the existing ground. The support frames 1 are symmetrically arranged in two. A U-shaped box 10 is jointly installed between the two support frames 1. A number of equally spaced arranged loop-shaped frames 11 are slidably installed between the two support frames 1 through electric sliders. A cooling unit 2 is provided inside the loop-shaped frame 11. Above the loop-shaped frame 11, there is a hot pressing unit 3 slidably connected to the U-shaped box 10 through an electric slider. On both sides below the hot pressing unit 3, there is a pressing unit 4 for pressing the edges of the PCB circuit board during hot pressing to prevent warping. A hole plate 13 for placing the PCB circuit board during hot pressing and conveying is slidably installed on the inner wall of the loop-shaped frame 11. Support components are provided at the four corners of the lower end face of the hole plate 13. Start-stop components for controlling the start and stop of the cooling unit 2 are also provided on both sides of the loop-shaped frame 11.

[0039] Driven by the electric slider, multiple loop-shaped frames 11 are sequentially conveyed to the lower part of the hot pressing unit 3, so that the hot pressing unit 3 performs hot press-fitting on the PCB circuit board placed in the loop-shaped frame 11. And before the hot pressing unit 3 performs hot pressing on the PCB circuit board, the pressing unit 4 can first contact both sides of the PCB circuit board, so as to press both sides of the PCB circuit board to prevent the PCB circuit board from sliding and warping when the hot pressing unit 3 performs hot pressing on the PCB circuit board. It should be noted that when the pressing unit 4 presses both sides of the PCB circuit board, the hot pressing unit 3 performs hot pressing on the middle of the PCB circuit board. After hot pressing is completed, the pressing unit 4 moves to cancel the hot pressing on the side of the circuit board. At this time, the hot pressing unit 3 performs hot pressing on both sides of the PCB circuit board. Since the hot pressing unit 3 has previously completed hot pressing on the middle of the PCB circuit board and the middle of the circuit board has been bonded, when hot pressing both sides of the PCB circuit board, the PCB circuit board will not be displaced and slide. The present invention can effectively press the sides of the circuit board when performing hot pressing on the PCB circuit board, avoid the circuit board from sliding and warping when performing press-fitting on the PCB circuit board, and when the hot pressing unit 3 moves up to cancel the hot pressing on the circuit board, when the hot pressing unit 3 is lifted as a whole, it will not adhere the PCB circuit board to the hot pressing unit 3;

[0040] Through the setting of the start-stop component, when the hot pressing unit 3 moves down to perform hot pressing on the PCB circuit board, the start-stop component can be automatically triggered, so that the start-stop component turns on the cooling unit 2, so that when the PCB circuit board is hot pressed, the outside of the circuit board is cooled, avoiding quickly reducing the high temperature outside the circuit board after the circuit board hot pressing operation, avoiding damage to the PCB circuit board caused by continuous high temperature, and at the same time facilitating the quick removal of the hot-pressed circuit board.

[0041] As attached Figure 4 、 5As shown in the figure, the cooling unit 2 includes two transverse grooves 21 correspondingly formed in the inner cavity of the loop-shaped frame 11. In the middle of the transverse grooves 21, two symmetrically arranged water tanks 211 are fixedly installed. A threaded heat dissipation pipe 212 is commonly installed in the middle of the two water tanks 211. On one side of the water tank 211, there is a cooling plate 213 connected to the inner wall of the loop-shaped frame 11. A three-way pipe 214 is commonly connected between the two water tanks 211 and the cooling plate 213. A water pump for circulating water between the two water tanks 211 and the cooling plate 213 is provided in the three-way pipe 214. Through grooves 215 are formed in the loop-shaped frame 11 on both sides of the cooling plate 213.

[0042] By turning on the water pump, the water in the two water tanks 211 and the cooling plate 213 can be circulated, so that the water in the cooling plate 213 cools the inside of the loop-shaped frame 11, so as to quickly adsorb the high temperature generated during the hot pressing of the PCB circuit board. And through the setting of the threaded heat dissipation pipe 212, when the water between the two water tanks 211 is circulated and transported, it can continuously contact the threaded heat dissipation pipe 212, so as to quickly reduce the temperature.

[0043] As shown in the appendix Figure 4 、 5 As shown in FIGS. 10, vertical grooves 22 are formed in the inner cavity of the loop-shaped frame 11 on both sides of the transverse grooves 21. Blowers 221 are fixedly installed on both sides of the vertical grooves 22. An air duct 222 is commonly installed between the two blowers 221. On one side of the air duct 222, a plurality of blow slots 223 are arranged at equal intervals and are formed in the inner wall of the loop-shaped frame 11. The blow slots 223 are communicated with the air duct 222.

[0044] When the blower 221 is turned on, the air is conveyed into the blow slots 223 through the air duct 222. Since the blow slots 223 are concave, the air blown out from the blow slots 223 on both sides generates convection, so that the high temperature inside the loop-shaped frame 11 can be quickly dissipated.

[0045] The start-stop component includes two compression boxes 23 symmetrically installed in the transverse grooves 21. A piston rod 231 is slidably installed in the middle of the compression box 23. A first solenoid valve 232 is fixedly installed on one side of the piston rod 231 located inside the compression box 23. A driven wedge block 234 is fixedly installed at the other end of the piston rod 231. A spring is sleeved outside the piston rod 231. A second solenoid valve 233 is fixedly installed at the bottom of the inner cavity of the compression box 23. The second solenoid valve 233 is electrically connected to the blower 221 and the water pump. When the first solenoid valve 232 and the second solenoid valve 233 are in contact, the second solenoid valve 233 controls the water pump and the blower 221 to start working.

[0046] When the electric slider is opened to drive the lifting frame 31 to move downward, the active wedge block 462 moves downward synchronously to squeeze the driven wedge block 234. After the driven wedge block 234 is squeezed, the piston rod 231 moves in the direction close to the second solenoid valve 233. When the piston rod 231 moves, it contacts the second solenoid valve 233 through the first solenoid valve 232. At this time, the second solenoid valve 233 is opened to control the fan 221 and the water pump to start, thereby completing the cooling operation of the PCB circuit board during hot pressing and assembly. Compared with the existing hot pressing device, the present invention can automatically open the cooling unit 2 according to the operation of the hot pressing unit 3 when hot pressing the PCB circuit board, and after the hot pressing work is completed, the cooling unit 2 is paused synchronously, which truly satisfies the simultaneous hot pressing of the circuit board and the heat dissipation of the outside of the circuit board.

[0047] As attached Figure 3 As shown, the supporting assembly includes a gear 24 installed on the outside of the return frame 11 through a motor rotation, and the gear 24 is meshed with rack plates 241 that are slidably connected to the return frame 11 on the upper and lower sides, a mounting plate 242 is fixedly mounted on one side of the rack plate 241, a telescopic plate 243 is fixedly mounted on one end of the mounting plate 242, a cylinder 244 is fixedly mounted on one side of the upper end surface of the telescopic plate 243, and a stabilizing plate 245 is fixedly mounted on the top of the cylinder 244.

[0048] By setting the stabilizing plate 245, the orifice plate 13 can be resisted, so that the circuit board is more stable when hot-pressed on the orifice plate 13, and when the motor is turned on to drive the gear 24 to rotate, the rack plates 241 on both sides move away from each other, and at the same time drive the cylinder 244 and the stabilizing plate 245 to cancel the resistance to the orifice plate 13, and then the electric slider is turned on to drive the orifice plate 13 to flip on the external frame 12, so that the circuit board that has been hot-pressed on the orifice plate 13 can be quickly dropped.

[0049] As attached Figure 9 As shown, the hot pressing unit 3 includes a lifting frame 31 which is slidably connected to the mold box 10 through an electric slider, a covering plate 32 is fixedly installed in the middle of the lower end surface of the lifting frame 31 through an electric push plate, a rectangular frame 33 is provided below the covering plate 32, two symmetrically arranged air bags 331 are fixedly installed on the inner wall of the rectangular frame 33, the air bags 331 are connected to the covering plate 32 through connecting pipes, a motor 34 is fixedly installed in the middle of the rectangular frame 33, and a cam 35 is fixedly installed at the output end of the motor 34.

[0050] When the PCB circuit board is hot-pressed, the lifting frame 31 moves downward to make the side hot pressing plates 37 and the central hot pressing plate 38 contact the upper end surface of the circuit board. At this time, the pressing unit 4 presses the two side edges of the circuit board. It should be noted that when the circuit board is hot-pressed, the lower ends of the central hot pressing plate 38 and the side hot pressing plate 37 uniformly press the rollers 45 to form a same plane. Then the central hot pressing plate 38 and the side hot pressing plate 37 are turned on to hot-press the upper surface of the circuit board. At this time, the motor 34 is turned on to drive the cam 35 to rotate. When the cam 35 rotates, the side hot pressing plates 37 on both sides are continuously pushed through the push-pull plates 36 on both sides. The two side heat pressing plates 37 are moved closer to or farther away from each other, so that the upper surface of the circuit board is subjected to variable heat pressing. Compared with the existing heat pressing device, when the PCB is subjected to heat pressing, the position of the two side heat pressing plates 37 is continuously changed, so that different positions on the surface of the circuit board can be subjected to heat pressing. Compared with the one-piece overall covering heat pressing, the present invention can meet the requirements of heat pressing and assembly of PCB circuit boards of different specifications and sizes. In addition, during the movement of the two side heat pressing plates 37, it is possible to avoid the situation that the PCB circuit board is damaged by overheating caused by long-term heat pressing of the fixed position of the circuit board.

[0051] And when the two side heat pressing plates 37 are constantly moving, the airbag 331 is continuously squeezed by the pressing plate 371, and the gas in the airbag 331 is supplied to the covering plate 32. Finally, the covering plate 32 blows air to the surface of the PCB circuit board through the air outlet below to dissipate heat. In conjunction with the movement of the side heat pressing plates 37, on the one hand, it can dissipate heat from the surface of the circuit board after hot pressing, and on the other hand, it can prevent the hot pressing plate from adhering to the lower end surface of the side heat pressing plate 37 during hot pressing.

[0052] Side hot pressing plates 37 are slidably installed on both sides of the rectangular frame 33, and a central hot pressing plate 38 slidably connected to the rectangular frame 33 is provided between the two side hot pressing plates 37. Push-pull plates 36 are intersected on both sides of the cam 35, and the ends of the push-pull plates 36 on both sides away from the cam 35 are respectively hinged to the side hot pressing plates 37 on both sides, and a pressing plate 371 is fixedly installed on the upper end surface of the side hot pressing plate 37.

[0053] As attached Figure 10 As shown, the pressing unit 4 includes two symmetrically arranged guide frames 41, two groups of symmetrically arranged built-in frames 42 are installed between the two guide frames 41 through an electric slider, and a group of guide frames 43 are slidably installed between each group of built-in frames 42 through an electric slider.

[0054] Inside the guiding frame 43, a T-shaped part 44 is slidably installed through an electric slider. Between two corresponding T-shaped parts 44, two corresponding pressing rollers 45 are rotatably installed together. On one side of the guiding frame 43, there is a moving block 46 which is slidably connected to the built-in frame 42 through an electric slider. On the lower end surface of the moving block 46, an electric push rod 461 is fixedly installed. The telescopic end of the electric push rod 461 is fixedly installed with a driving wedge-shaped block 462.

[0055] By sliding the T-shaped part 44 up and down inside the guiding frame 43, the pressing roller 45 can satisfy the surface pressing when hot-pressing circuit boards of different specifications and thicknesses.

[0056] Grooves 121 are formed around the inner wall of the loop-shaped frame 11. Inside the grooves 121, connecting plates 122 are slidably installed. Between multiple connecting plates 122, an outer frame 12 is installed together. The middle part of the inner wall of the outer frame 12 is slidably connected to the hole plate 13 through an electric slider.

[0057] During use, the PCB circuit board to be hot-pressed is placed on the hole plate 13. The electric slider is turned on to drive multiple loop-shaped frames 11 to be sequentially conveyed below the hot-pressing unit 3, so that the hot-pressing unit 3 performs hot-pressing on the PCB circuit board placed inside the loop-shaped frame 11. And before the hot-pressing unit 3 performs hot-pressing on the PCB circuit board, the pressing unit 4 can first contact both sides of the PCB circuit board, so as to press both sides of the PCB circuit board, preventing the PCB circuit board from sliding and warping when the hot-pressing unit 3 performs hot-pressing on the PCB circuit board. It should be noted that when the pressing unit 4 presses both sides of the PCB circuit board, the hot-pressing unit 3 performs hot-pressing on the middle part of the PCB circuit board. After hot-pressing is completed, the pressing unit 4 moves to cancel the hot-pressing on the side of the circuit board. At this time, the hot-pressing unit 3 performs hot-pressing on both sides of the PCB circuit board. Since the hot-pressing unit 3 has previously completed hot-pressing on the middle part of the PCB circuit board and the middle part of the circuit board has been bonded, when hot-pressing both sides of the PCB circuit board, the PCB circuit board will not be misaligned and slide. Through hot-pressing the PCB circuit board, the present invention can effectively press the sides of the circuit board, avoid sliding and warping of the circuit board when press-fitting the PCB circuit board, and when the hot-pressing unit 3 moves up to cancel the hot-pressing on the circuit board, when the hot-pressing unit 3 is lifted as a whole, the PCB circuit board will not be adhered to the hot-pressing unit 3;

[0058] When the two side hot pressing plates 37 are continuously moving, the airbag 331 is continuously squeezed by the pressing plate 371. The gas in the airbag 331 is supplied into the covering plate 32. Finally, the covering plate 32 blows air to the surface of the PCB circuit board through the air outlet below. Cooperating with the movement of the side hot pressing plate 37, on the one hand, it can dissipate heat from the surface of the circuit board after hot pressing, and on the other hand, it can also prevent the hot pressing plate from adhering to the lower end surface of the side hot pressing plate 37 during hot pressing;

[0059] The setting of the start-stop component can automatically trigger the start-stop component to open the cooling unit 2 when the hot pressing unit 3 moves down to hot press the PCB circuit board. Thus, when the PCB circuit board is hot pressed, the outside of the circuit board is cooled, preventing the rapid reduction of the high temperature outside the circuit board after the hot pressing operation of the circuit board and avoiding damage to the PCB circuit board caused by continuous high temperature. At the same time, it is convenient to quickly take out the hot pressed circuit board. When the electric slider is turned on to drive the lifting frame 31 to move down, the active wedge block 462 moves down synchronously to squeeze the driven wedge block 234. After being squeezed, the piston rod 231 moves in the direction close to the second solenoid valve 233. When the piston rod 231 moves, it contacts the second solenoid valve 233 through the first solenoid valve 232. At this time, the second solenoid valve 233 is opened to control the blower 221 and the water pump to start, thus completing the cooling operation when the PCB circuit board is hot pressed and assembled. Compared with the existing hot pressing device, when the present invention hot presses the PCB circuit board, it can automatically turn on the cooling unit 2 according to the operation of the hot pressing unit 3, and suspend the cooling unit 2 synchronously after the hot pressing work is completed, truly meeting the simultaneous hot pressing of the circuit board and the heat dissipation of the outside of the circuit board;

[0060] When the water pump starts, it can circulate the water in the two water tanks 211 and the cooling plate 213, so that the water in the cooling plate 213 cools the inside of the return frame 11, so as to quickly adsorb the high temperature generated when the PCB circuit board is hot pressed and assembled. And through the setting of the threaded heat dissipation pipe 212, when the water between the two water tanks 211 is circulated and transported, it continuously contacts the threaded heat dissipation pipe 212, thus realizing the rapid reduction of the temperature. When the blower 221 starts, the air is conveyed into the blowing groove 223 through the air duct 222. Since the blowing groove 223 is concave, the air blown out from the two side blowing grooves 223 generates convection, so as to quickly dissipate the high temperature in the return frame 11;

[0061] The setting of the stabilizing plate 245 can resist the orifice plate 13, making the circuit board more stable when hot-pressed on the orifice plate 13, and when the motor is turned on to drive the gear 24 to rotate, the rack plates 241 on both sides move away from each other, and at the same time drive the cylinder 244 and the stabilizing plate 245 to cancel the resistance to the orifice plate 13, and then the electric slider is turned on to drive the orifice plate 13 to flip on the external frame 12, so that the circuit board that has been hot-pressed on the orifice plate 13 can fall quickly.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An automatic PCB pressing and conveying device, comprising a support frame (1) placed on the existing ground, characterized in that, The support frames (1) are symmetrically arranged in two, and a U-shaped box (10) is jointly installed between the two support frames (1). A number of equally spaced loop-shaped frames (11) are slidably installed between the two support frames (1) through electric sliders. A cooling unit (2) is arranged inside the loop-shaped frame (11). Above the loop-shaped frame (11), there is a hot pressing unit (3) slidably connected to the U-shaped box (10) through an electric slider. On both sides below the hot pressing unit (3), there are pressing units (4) for pressing the edges of the PCB circuit board during hot pressing to prevent warping. A hole plate (13) for placing the PCB circuit board during hot pressing and conveying is slidably installed on the inner wall of the loop-shaped frame (11). At the four corners of the lower end face of the hole plate (13), there are supporting components. On both sides of the loop-shaped frame (11), there are also starting and stopping components for controlling the cooling unit (2).

2. The PCB automatic press-fitting and conveying device according to claim 1, wherein, The cooling unit (2) includes two transverse slots (21) correspondingly opened inside the loop-shaped frame (11). In the middle of the transverse slots (21), two symmetrically arranged water tanks (211) are fixedly installed. A threaded heat dissipation pipe (212) is jointly installed in the middle of the two water tanks (211). On one side of the water tank (211), there is a cooling plate (213) connected to the inner wall of the loop-shaped frame (11). A three-way pipe (214) is jointly connected between the two water tanks (211) and the cooling plate (213). A water pump for circulating water between the two water tanks (211) and the cooling plate (213) is arranged inside the three-way pipe (214). Through slots (215) are opened on both sides of the cooling plate (213) on the loop-shaped frame (11).

3. An automatic press-fitting and conveying device for a PCB according to claim 2, characterized in that, On both sides of the transverse slot (21), vertical slots (22) are opened inside the loop-shaped frame (11). On both sides of the vertical slots (22), fans (221) are fixedly installed. An air duct (222) is jointly installed between the two fans (221). On one side of the air duct (222), a number of equally spaced blowing slots (223) are opened on the inner wall of the loop-shaped frame (11), and the blowing slots (223) are communicated with the air duct (222).

4. The PCB automatic press-fitting and conveying device according to claim 3, wherein, The starting and stopping components include two compression boxes (23) symmetrically installed in the transverse slot (21). A piston rod (231) is slidably installed in the middle of the compression box (23). On one side of the piston rod (231) located inside the compression box (23), a first solenoid valve (232) is fixedly installed. On the other end of the piston rod (231), a driven wedge block (234) is fixedly installed. A spring is sleeved outside the piston rod (231). A second solenoid valve (233) is fixedly installed at the bottom of the inner cavity of the compression box (23). The second solenoid valve (233) is electrically connected to the fan (221) and the water pump. When the first solenoid valve (232) and the second solenoid valve (233) are in contact, the second solenoid valve (233) controls the water pump and the fan (221) to start working.

5. A PCB automatic press-fitting and conveying device according to claim 1, characterized in that, The supporting component includes a gear (24) rotatably mounted outside the U-shaped frame (11) by a motor. Rack plates (241) that are slidably connected to the U-shaped frame (11) are engaged with both the upper and lower sides of the gear (24). An installation plate (242) is fixedly installed on one side of the rack plate (241). One end of the installation plate (242) is fixedly installed with a telescopic plate (243). One side of the upper end surface of the telescopic plate (243) is fixedly installed with a cylinder (244), and a stabilizing plate (245) is fixedly installed at the top of the cylinder (244).

6. The PCB automatic press-fitting and conveying device according to claim 1, characterized in that The hot pressing unit (3) includes a lifting frame (31) slidably connected to the U-shaped box (10) by an electric slider. A covering plate (32) is fixedly installed in the middle of the lower end surface of the lifting frame (31) through an electric push plate. A rectangular frame (33) is arranged below the covering plate (32). Two symmetrically arranged air bags (331) are fixedly installed on the inner wall of the rectangular frame (33). The air bags (331) are connected to the covering plate (32) through connecting pipes. A motor (34) is fixedly installed in the middle of the rectangular frame (33), and a cam (35) is fixedly installed at the output end of the motor (34).

7. The PCB automatic press-fitting and conveying device according to claim 6, wherein, Side hot pressing plates (37) are slidably installed on both sides of the rectangular frame (33). A central hot pressing plate (38) that is slidably connected to the rectangular frame (33) is arranged between the two side hot pressing plates (37). Push-pull plates (36) are hinged to both sides of the cam (35). One ends of the two push-pull plates (36) far from the cam (35) are respectively hinged to the two side hot pressing plates (37). A pressing plate (371) is fixedly installed on the upper end surface of the side hot pressing plate (37).

8. A PCB automatic press-fitting and conveying device according to claim 1, characterized in that, The pressing unit (4) includes two symmetrically arranged guiding frames (41). Two groups of symmetrically arranged inner frames (42) are jointly installed between the two guiding frames (41) by electric sliders. A group of guiding frames (43) are slidably installed between each group of inner frames (42) by electric sliders.

9. A PCB automatic press-fitting and conveying device according to claim 8, characterized in that, A T-shaped part (44) is slidably installed in the guiding frame (43) by an electric slider. Two corresponding pressing rollers (45) are jointly rotatably installed between two corresponding T-shaped parts (44). A moving block (46) that is slidably connected to the inner frame (42) by an electric slider is arranged on one side of the guiding frame (43). An electric push rod (461) is fixedly installed on the lower end surface of the moving block (46), and a driving wedge block (462) is fixedly installed at the telescopic end of the electric push rod (461).

10. A PCB automatic press-fitting and conveying device according to claim 1, characterized in that, Grooves (121) are formed around the inner wall of the U-shaped frame (11). A connecting plate (122) is slidably installed in the grooves (121). An outer frame (12) is jointly installed between multiple connecting plates (122). The middle of the inner wall of the outer frame (12) is slidably connected to a hole plate (13) by an electric slider.

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