Quick baking equipment for PCB (Printed Circuit Board)

Abstract

The invention relates to the technical field of PCBs (printed circuit boards), and discloses quick baking equipment for PCBs, which comprises a baking oven for baking the PCBs, and a baking cavity is formed in the baking oven; the two sets of placement units are movably connected into the baking cavity and used for storing batch PCBs, baffles are fixed to the two ends of each placement unit and matched with one side of the baking cavity, a movable plate is fixed to the baffle located outside the baking oven, and the movable plate is fixed to the other side of the baking cavity. One ends of the two moving plates are provided with an in-out unit for exchanging the two groups of placing units; according to the PCB baking oven, an existing baking oven is improved, and the in-out unit is adopted to control the two sets of placing units to be alternately used in the baking cavity, so that when the baked PCBs are taken out, the next batch of new PCBs can enter the baking oven again to be baked, and therefore large-batch baking of the PCBs is achieved; and rapid baking of the PCB is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of PCB circuit board, in particular to a rapid baking equipment for PCB circuit board. BACKGROUND

[0002] Before SMT (Surface Mount Technology) of PCB (Printed Circuit Board), in order to eliminate the internal stress of PCB, remove the moisture in the circuit board and improve the subsequent welding effect, the PCB needs to be baked and cooled in advance, and then the PCB is fed to the boarder to start the SMT process.

[0003] At present, in the process of baking the PCB, the PCB is generally placed in the baking oven, and then taken out after baking, for example, the existing Chinese patent document CN202410239225.6 discloses a PCB pre-baking equipment, which comprises a baking oven, and a heating device is fixedly connected to the inner wall of the back of the baking oven. In the process of baking, the pump gas mechanism pumps gas into the spray pipe, and the gas is sprayed from the nozzle to the PCB, which promotes the flow of gas in the baking oven and facilitates uniform heating of the PCB. At the same time, the existing Chinese patent document CN201920309156.6 discloses a PCB baking oven, which comprises a box body and a box door. The box door is fixed to the box body by a hinge. The box body is provided with a baking cavity. The baking cavity is fixed with sliding rails on both sides. The sliding rails are slidably connected with the sliding blocks. The sliding blocks are driven by the motor to rotate the screw rod, so that the sliding blocks can enter and exit the baking cavity. The equipment in the above two schemes can improve the baking efficiency of the PCB, but only a certain number of PCB circuit boards can be stored in the baking oven at a time. After baking, the PCB circuit boards need to be cooled before they can be taken out. During this period, the baking oven is in a stopped state. After the last batch of baked circuit boards is taken out, new circuit boards can be placed in the baking oven to continue the baking work. This will undoubtedly slow down the baking progress of the PCB, resulting in poor baking efficiency, which is difficult to meet the high-intensity baking demand. SUMMARY

[0004] The present application aims to provide a rapid baking equipment for PCB circuit board to solve the problem of poor baking efficiency and difficulty in meeting the high-intensity baking demand as mentioned in the background.

[0005] In order to achieve the above object, the application provides the following technical scheme: a rapid baking equipment for PCB circuit board, comprising an oven for baking PCB circuit board, an oven cavity is arranged in the oven; further comprising: two groups of placing units for storing batches of PCB circuit boards movably connected in the oven cavity, baffles are fixed at both ends of the placing units, the baffles are matched with one side of the oven cavity, the baffles outside the oven are fixed with moving plates, one end of the two moving plates is installed with an in-out unit for switching use of the two groups of placing units; two groups of auxiliary cooling units are installed on the outside of the oven, the auxiliary cooling units are used for rapid cooling of the PCB circuit boards removed from the inside of the oven, a transmission unit is arranged between the auxiliary cooling units and the in-out unit; two air outlet covers are fixed on one side of the top of the oven, each air outlet cover is in communication with the inside of the top of the oven, and a heat dissipation unit is arranged between the air outlet cover and the transmission unit.

[0006] Preferably, the in-out unit comprises a first motor, a second motor, a connecting shaft, a first screw rod and a second screw rod, the first motor and the second motor are fixedly installed on the outside of the oven, the output ends of the first motor and the second motor are fixed with connecting shafts, the connecting shafts are rotatably connected with the outer wall of the oven through bearing seats, the first screw rod is fixed with the output end of the first motor through the connecting shaft, the second screw rod is fixed with the output end of the second motor through the connecting shaft, the outer sides of the first screw rod and the second screw rod are threadedly connected with the moving plates through ball nuts, the two groups of auxiliary cooling units are respectively located below the first screw rod and the second screw rod, and the threads on the outer sides of the first screw rod and the second screw rod are oppositely arranged.

[0007] Preferably, the auxiliary cooling unit comprises a connecting frame, a first rotating shaft and a first fan, the connecting frame is fixed to the outer wall of the oven, a plurality of first rotating shafts are arranged in a straight line array, the first rotating shafts are rotatably connected with the connecting frame through bearings, the first fans are fixedly connected with one end of the first rotating shafts facing the placing units, first transmission pulleys are fixed to one end of the first rotating shafts away from the first fans, and the transmission unit is transmissionally connected with the first transmission pulleys.

[0008] Preferably, the transmission unit comprises a driving bevel gear, a driven bevel gear, a one-way gear, a first transmission gear and a first driving pulley, the driving bevel gear is fixedly connected with the connecting shaft, the driven bevel gear and the one-way gear are coaxially arranged, the first transmission gear is engaged with the one-way gear, a first transmission rod is fixedly connected between the first transmission gear and the first driving pulley, the first transmission rod is rotatably connected with the connecting frame through a bearing seat, a first synchronous belt is transmissionally connected between the first driving pulley and the first transmission pulley, and the input end of the heat dissipation unit is transmissionally connected with the first transmission gear.

[0009] Preferably, the heat dissipation unit comprises a second transmission gear, a second driving pulley, a second transmission pulley, a second rotating shaft and a second fan, the second transmission gear is engaged with the first transmission gear, a second transmission rod is fixedly connected between the second transmission gear and the second driving pulley, the second transmission rod is rotatably connected with the connecting frame through a bearing seat, the second transmission pulley is fixed to one end of the second rotating shaft, the second fan is fixed to the other end of the second rotating shaft, a dustproof filter screen is fixed to the outer side of the air outlet cover, the second rotating shaft and the middle part of the dustproof filter screen are rotatably connected through a bearing, the second fan is located in the inside of the air outlet cover, and a second synchronous belt is transmissionally connected between the second transmission pulley and the second driving pulley.

[0010] Preferably, the placing unit comprises a first fixed frame and a second fixed frame, a plurality of connecting rods are fixedly connected between the first fixed frame and the second fixed frame, the baffle is fixed at both ends of the first fixed frame and the second fixed frame, the first fixed frame is provided through the top and bottom, the bottom of the second fixed frame is fixedly connected with a bottom plate, the top surface of the bottom plate is not coincident with the top surface of the second fixed frame, a plurality of partition strips are fixedly connected at the same positions on the inner side of the first fixed frame and the top of the bottom plate, and the partition strips are arranged adjacent to each other, and the placing space for the PCB board to pass through is formed between two adjacent partition strips.

[0011] Preferably, the outer side of the baffle is fixedly connected with a sealing strip, and the sealing strip is seamlessly connected with the outer side of the baking cavity.

[0012] Preferably, the number of teeth of the one-way gear is more than the number of teeth of the first transmission gear.

[0013] Preferably, the oven is fixedly connected with a guide rail away from the side of the feeding and discharging unit, a sliding block is slidingly connected on the guide rail, and the sliding block is fixed with the bottom of the moving plate.

[0014] Preferably, the outer side of the second rotating shaft is fixedly connected with a connecting block, a cleaning brush is fixedly connected to one end of the connecting block, and the brush surface of the cleaning brush is in contact with the outer side of the dustproof filter screen.

[0015] Compared with the prior art, the present application has the following advantages: 1、The present application improves the existing baking oven, adopts the in-out unit to control two groups of placing units to be used alternately in the baking cavity, so that when the baked PCB circuit board is taken out, the next batch of new circuit board can enter the oven again for baking, thereby realizing the mass baking of the PCB circuit board and being beneficial to the rapid baking of the PCB circuit board.

[0016] 2、In the present application, the PCB circuit board can be rapidly cooled by the auxiliary cooling unit during the process of being taken out of the oven, so as to prevent the operator from being scalded when taking out the PCB circuit board. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the schematic diagram of the overall structure of the present application; Figure 2 It is the side view of the present application; Figure 3 It is the state diagram of the two groups of placing units when moving in the oven; Figure 4 It is the structure diagram of the in-out unit of the present application; Figure 5 It is the structure diagram of the auxiliary cooling unit of the present application; Figure 6 It is the structure diagram of the transmission unit of the present application; Figure 7 It is the structure diagram of the heat dissipation unit of the present application; Figure 8 It is the structure diagram of the placing unit of the present application; Figure 9 It is the enlarged view of the A area in the present application; Figure 7 Figure 10 It is the structure diagram of the one-way gear of the present application.

[0018] ​In the figure: 1, oven; 101, baking cavity; 102, air outlet cover; 2, placement unit; 201, baffle; 202, moving plate; 203, first fixed frame; 204, second fixed frame; 205, connecting rod; 206, bottom plate; 207, partition strip; 208, sealing strip; 3, access unit; 301, first motor; 302, second motor; 303, connecting shaft; 304, first lead screw; 305, second lead screw; 4, auxiliary cooling unit; 401, connecting frame; 402, first rotating shaft; 403, first fan; 404, first transmission pulley; 5, transmission unit; 501, driving bevel gear; 502, driven bevel gear; 503, one-way gear; 504, first transmission gear; 505, first driving pulley; 506, first transmission rod; 507, first synchronous belt; 6, heat dissipation unit; 601, second transmission gear; 602, second driving pulley; 603, second transmission pulley; 604, second rotating shaft; 605, second fan; 606, second transmission rod; 607, dustproof filter screen; 608, second synchronous belt; 609, connecting block; 6010, cleaning brush; 7, guide rail; 8, sliding block. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Embodiment one: please refer to Figures 1-3 , a kind of PCB fast baking equipment of circuit board in the diagram, including for the PCB circuit board is baked oven 1, the inside of oven 1 is equipped with baking cavity 101; It further includes: two groups of placement units 2 for storing batches of PCB circuit boards movably connected in baking cavity 101, both ends of placement unit 2 are fixed with baffle 201, baffle 201 and one side of baking cavity 101 are adapted, baffle 201 located outside oven 1 is fixed with moving plate 202, one end of the two moving plates 202 is installed access unit 3 for exchanging use of the two groups of placement units 2, two groups of placement units 2 are alternately used in baking cavity 101 by using access unit 3 control, so that when taking out the baked PCB circuit board, the next batch of new circuit board can enter oven 1 again for baking, so that the mass baking of PCB circuit board is realized, which is beneficial to the rapid baking of PCB circuit board; Two groups of auxiliary cooling units 4 are installed outside the oven 1, which are used to quickly cool the PCB circuit boards removed from the inside of the oven 1, and a transmission unit 5 is arranged between the auxiliary cooling units 4 and the access unit 3, which drives the auxiliary cooling units 4 to work, wherein the auxiliary cooling units 4 only work during the process of the placing unit 2 moving out of the oven 1, at this time the auxiliary cooling units 4 can generate wind to blow and cool the removed circuit boards one by one, so that the temperature of the circuit board is reduced after completely removed, preventing the operator from being scalded when taking out the PCB circuit board; Two air outlet covers 102 are fixed on one side of the top of the oven 1, each air outlet cover 102 is in communication with the inside of the top of the oven 1, and a heat dissipation unit 6 is arranged between the air outlet cover 102 and the transmission unit 5, through which the hot air generated by the equipment inside the oven 1 during the process of removing the circuit board can be quickly discharged, thereby achieving the effect of quickly cooling the equipment, which is beneficial to the efficient operation of the equipment.

[0021] Further, referring to Figure 4 , the access unit includes a first motor 301, a second motor 302, a connecting shaft 303, a first lead screw 304 and a second lead screw 305, the first motor 301 and the second motor 302 are fixedly installed on the outside of the oven 1, the output ends of the first motor 301 and the second motor 302 are fixedly connected with the connecting shaft 303, the connecting shaft 303 is rotatably connected with the outer wall of the oven 1 through a bearing seat, the first lead screw 304 is fixedly connected with the output end of the first motor 301 through the connecting shaft 303, the second lead screw 305 is fixedly connected with the output end of the second motor 302 through the connecting shaft 303, the outer sides of the first lead screw 304 and the second lead screw 305 are threadedly connected with the moving plate 202 through a ball nut, the two groups of auxiliary cooling units 4 are respectively located below the first lead screw 304 and the second lead screw 305, and the thread directions of the outer sides of the first lead screw 304 and the second lead screw 305 are opposite.

[0022] Specifically, in operation, the first screw rod 304 is driven to rotate by the first motor 301, and the second screw rod 305 is driven to rotate by the second motor 302, one of the two moving plates 202 is driven to move away from the oven 1, and the other is driven to move close to the oven 1, so that the two groups of placing units 2 move in and out relative to the oven 1, the placing units 2 that have been baking in the oven 1 are just moved out, and the new placing units 2 that have placed a plurality of PCB circuit boards are just automatically entered into the oven 1, at this time, the baking cavity 101 is closed by the two baffles 201 at the position where the two groups of placing units 2 are connected, to prevent the internal baking airflow from overflowing, then the oven 1 can bake the PCB circuit board again, the PCB circuit board that has been moved out is just taken off by the operator, and the new PCB circuit board that needs to be baked is replaced, so that the PCB circuit board can be baked in large quantities, which is beneficial to the rapid baking of the PCB circuit board.

[0023] Further, referring to Figure 8 , the placing unit 2 includes a first fixed frame 203 and a second fixed frame 204, a plurality of connecting rods 205 are welded and fixed between the first fixed frame 203 and the second fixed frame 204, the baffles 201 are fixed at both ends of the first fixed frame 203 and the second fixed frame 204, the first fixed frame 203 is provided through from top to bottom, the bottom of the second fixed frame 204 is fixed with a bottom plate 206, the top surface of the bottom plate 206 does not coincide with the top surface of the second fixed frame 204, a plurality of partition strips 207 are fixed at the same positions on the inner side of the first fixed frame 203 and the top of the bottom plate 206, and the two partition strips 207 adjacent to each other have a placing space for the PCB board.

[0024] Specifically, a plurality of PCB circuit boards are placed between the first fixed frame 203 and the second fixed frame 204, and the plurality of partition strips 207 can separate a plurality of storage spaces, which is beneficial to the stable placement of the plurality of PCB circuit boards, and the plurality of PCB circuit boards will not be stacked and contacted, compared with the existing stacking placement method, the baking area of the PCB circuit board is greatly improved, and the baking efficiency of the PCB circuit board is improved.

[0025] Further, please refer to Figure 8The outer side of the baffle 201 is fixedly sleeved with a sealing strip 208, the sealing strip 208 is seamlessly connected with the outer side opening of the baking cavity 101, when the two groups of placing units 2 are connected in a head-to-tail manner, two baffles 201 are spliced into a structure similar to a door plate, so that the baking cavity 101 is just closed, and the baffle 201 is seamlessly sealed and connected by the elastic sealing strip 208, thereby effectively preventing heat leakage and external air intrusion during the baking process, so as to ensure the temperature stability and baking efficiency inside the baking cavity 101, and ensure the high efficiency and safety of the baking process.

[0026] Further, referring to Figure 1 , the oven 1 is fixed away from the access unit 3 and has a guide rail 7, the guide rail 7 is slidably connected with a sliding block 8, the sliding block 8 is fixed with the bottom of the moving plate 202, so that the placing unit 2 can smoothly slide, and the stability and accurate control of the placing unit 2 in the oven 1 are ensured, the use efficiency of the oven 1 is improved, and the reliability of the oven 1 in continuous working process is enhanced.

[0027] Embodiment two: please refer to Figure 5 , Figure 6 and Figure 10 , the embodiment is further illustrated based on embodiment one, and the difference is that an auxiliary cooling unit 4 is additionally arranged, so that the PCB circuit board after being removed is automatically cooled.

[0028] Specifically, the auxiliary cooling unit 4 comprises a connecting frame 401, a first rotating shaft 402 and a first fan 403, the connecting frame 401 is fixed to the outer wall of the oven 1, the first rotating shaft 402 is linearly arranged, the first rotating shaft 402 is rotatably connected with the connecting frame 401 through a bearing, the first fan 403 is fixedly connected with one end of the first rotating shaft 402 facing the placing unit 2, a first transmission pulley 404 is fixed to the other end of the first rotating shaft 402 away from the first fan 403, and a transmission unit 5 is transmissionally connected with the first transmission pulley 404. Meanwhile, the transmission unit 5 comprises a driving bevel gear 501, a driven bevel gear 502, a one-way gear 503, a first transmission gear 504 and a first driving pulley 505, the driving bevel gear 501 is fixedly sleeved with the connecting shaft 303, the driven bevel gear 502 and the one-way gear 503 are coaxially arranged, the first transmission gear 504 and the one-way gear 503 are meshed, a first transmission rod 506 is fixedly sleeved between the first transmission gear 504 and the first driving pulley 505, the first transmission rod 506 is rotatably connected with the connecting frame 401 through a bearing seat, a first synchronous belt 507 is transmissionally connected between the first driving pulley 505 and the first transmission pulley 404, and an input end of a heat dissipation unit 6 is transmissionally connected with the first transmission gear 504.

[0029] Specifically, during the outward movement of one of the movable plates 202, the connecting shaft 303 rotates, which in turn drives the driving bevel gear 501 to rotate. The driving bevel gear 501 then drives the driven bevel gear 502 to rotate, and the driven bevel gear 502 in turn drives the one-way gear 503 to rotate. Note that the one-way gear 503 only operates its internal clutch structure when the movable plate 202 moves outward (see the detailed structure for reference). Figure 10 When the moving plate 202 moves towards the inside of the oven 1, the clutch of the one-way gear 503 is not locked, and the outer gear does not rotate. When the outer gear of the one-way gear 503 rotates, it will drive the first transmission gear 504 to rotate. The first transmission gear 504 drives the first drive pulley 505 to rotate. The first drive pulley 505 drives the first transmission pulley 404 to rotate through the first synchronous belt 507, which in turn drives multiple first rotating shafts 402 to rotate, causing multiple first fans 403 to rotate. The wind generated by the rotation of the first fans 403 will blow air to cool down the removed circuit boards one by one, so that the surface temperature of the circuit boards will be reduced after they are completely removed.

[0030] It should be noted that you should refer to [link / reference]. Figure 10 The one-way gear 503 is sleeved with the ratchet shaft of the locking clutch. The pawl of the locking clutch is fixed to the one-way gear 503. When the ratchet of the locking clutch rotates clockwise, it will be locked by the pawl, so the ratchet and the one-way gear 503 are locked together. When the ratchet rotates, it will also drive the one-way gear 503 to rotate. When the ratchet of the locking clutch rotates counterclockwise, it will not be locked by the pawl, and the ratchet will rotate at the center of the one-way gear 503 without driving the one-way gear 503 to rotate, thus achieving a one-way transmission effect.

[0031] It should be noted that you should refer to [link / reference]. Figure 5 and Figure 6 The number of teeth on the one-way gear 503 is greater than that on the first transmission gear 504. Since the connecting shaft 303 drives the lead screw to rotate, the connecting shaft 303 will rotate multiple times. This will drive the one-way gear 503 to rotate multiple times through the bevel gear set. Since the number of teeth on the one-way gear 503 is greater than that on the first transmission gear 504, when the one-way gear 503 rotates once, the first transmission gear 504 will rotate multiple times. This results in a smaller torque output and a speed increase, which in turn drives the first fan 403 to rotate multiple times, generating greater airflow for cooling.

[0032] Example 3: Please refer to Figure 7 and Figure 9 This embodiment further illustrates other embodiments, the difference being the addition of a heat dissipation unit 6 to simultaneously dissipate heat from the equipment on top of the oven 1.

[0033] Specifically, the heat dissipation unit 6 comprises a second transmission gear 601, a second driving pulley 602, a second transmission pulley 603, a second rotating shaft 604 and a second fan 605, the second transmission gear 601 is connected with the first transmission gear 504 in meshing, a second transmission rod 606 is fixedly sleeved between the second transmission gear 601 and the second driving pulley 602, the second transmission rod 606 is rotatably connected with the connecting frame 401 through a bearing seat, the second transmission pulley 603 is fixed with one end of the second rotating shaft 604, the second fan 605 is fixed with the other end of the second rotating shaft 604, a dust filter screen 607 is fixed outside the air outlet cover 102, the second rotating shaft 604 and the dust filter screen 607 are rotatably connected through a bearing in the middle part, the second fan 605 is located inside the air outlet cover 102, and the second transmission pulley 603 and the second driving pulley 602 are transmissionally connected through a second synchronous belt 608.

[0034] Specifically, during the process that the PCB circuit board is removed from the oven 1, the first transmission gear 504 also drives the second transmission gear 601 to rotate, the second transmission gear 601 drives the second driving pulley 602 to rotate, the second driving pulley 602 drives the second transmission pulley 603 to rotate through the second synchronous belt 608, the second transmission pulley 603 drives the second rotating shaft 604 to rotate, and the second rotating shaft 604 drives the second fan 605 to rotate. Since the rotating directions of the first transmission gear 504 and the second transmission gear 601 are opposite, the rotating directions of the second fan 605 and the first fan 403 are opposite. The rotation of the second fan 605 generates suction force to synchronously and quickly discharge the heat generated by the equipment working inside the upper side of the oven 1, thereby achieving the effect of quickly dissipating heat for the equipment and being beneficial to the efficient operation of the equipment.

[0035] It should be noted that, please refer to Figure 9 The second rotating shaft 604 is fixedly sleeved with a connecting block 609, one end of the connecting block 609 is fixedly sleeved with a cleaning brush 6010, the brush surface of the cleaning brush 6010 is in contact with the outer surface of the dust filter screen 607, and the cleaning brush 6010 is driven to rotate when the second rotating shaft 604 rotates, so as to clean the dust on the dust filter screen 607 and prevent the dust from blocking the air outlet.

[0036] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the application can be varied in a multitude of ways. Such alterations, many of which will be apparent to those skilled in the art, can be based on current technology, and as such, this application should not be limited to the particular embodiments described herein, but should be understood to include all embodiments that are within the scope of the application, including all equivalents thereof. It is also understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting, since the scope of the present application will be limited only by the appended claims.

[0037] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, many modifications, changes, additions, and substitutions can be made by one of ordinary skill in the art without departing from the spirit and scope of the application, which is defined solely by the claims and their equivalents.

Claims

1. A rapid baking equipment for PCB circuit board, comprising: an oven (1) for baking PCB circuit board, the inside of the oven (1) is provided with a baking cavity (101); characterized in that further comprising: two groups of placing units (2) for storing batches of PCB circuit board movably connected in the baking cavity (101), both ends of the placing units (2) are fixed with baffles (201) which are adapted to one side of the baking cavity (101), the baffles (201) outside the oven (1) are fixed with moving plates (202), one end of the two moving plates (202) is installed with an in-out unit (3) for switching the use of the two groups of placing units (2); two groups of auxiliary cooling units (4) installed on the outside of the oven (1), the auxiliary cooling units (4) are used for rapid cooling of the PCB circuit board removed from the inside of the oven (1), a transmission unit (5) is arranged between the auxiliary cooling units (4) and the in-out unit (3); two air outlet covers (102) fixed on one side of the top of the oven (1), each air outlet cover (102) is in communication with the inside of the top of the oven (1), a heat dissipation unit (6) is arranged between the air outlet cover (102) and the transmission unit (5).

2. A rapid curing apparatus for PCB circuit boards as claimed in claim 1, wherein: The in-out unit comprises a first motor (301), a second motor (302), a connecting shaft (303), a first lead screw (304) and a second lead screw (305), the first motor (301) and the second motor (302) are fixedly installed on the outside of the oven (1), the output ends of the first motor (301) and the second motor (302) are fixed with connecting shafts (303), the connecting shafts (303) are rotatably connected with the outer wall of the oven (1) through bearing seats, the first lead screw (304) is fixed with the output end of the first motor (301) through the connecting shaft (303), the second lead screw (305) is fixed with the output end of the second motor (302) through the connecting shaft (303), the outside of the first lead screw (304) and the second lead screw (305) is threadedly connected with the moving plate (202) through a ball nut, the two groups of auxiliary cooling units (4) are respectively located directly below the first lead screw (304) and the second lead screw (305), the threads on the outside of the first lead screw (304) and the second lead screw (305) are oppositely arranged.

3. A rapid curing apparatus for PCB circuit boards as claimed in claim 2, wherein: The auxiliary cooling unit (4) comprises a connecting frame (401), a first rotating shaft (402) and a first fan (403), the connecting frame (401) is fixed to the outer wall of the oven (1), the first rotating shaft (402) is linearly arranged, the first rotating shaft (402) is rotatably connected to the connecting frame (401) through a bearing, the first fan (403) is fixedly connected to one end of the first rotating shaft (402) which faces the placing unit (2), the first rotating shaft (402) is fixedly connected with a first transmission pulley (404) at the other end away from the first fan (403), and the transmission unit (5) is drivingly connected to the first transmission pulley (404).

4. The rapid curing apparatus for a PCB according to claim 3, wherein: The transmission unit (5) comprises a driving bevel gear (501), a driven bevel gear (502), a one-way gear (503), a first transmission gear (504) and a first driving pulley (505), the driving bevel gear (501) is fixedly sleeved with the connecting shaft (303), the driven bevel gear (502) and the one-way gear (503) are coaxially arranged, the first transmission gear (504) is engaged with the one-way gear (503), a first transmission rod (506) is fixedly sleeved between the first transmission gear (504) and the first driving pulley (505), the first transmission rod (506) is rotatably connected to the connecting frame (401) through a bearing seat, a first synchronous belt (507) is drivingly connected between the first driving pulley (505) and the first transmission pulley (404), and the input end of the heat dissipation unit (6) is drivingly connected with the first transmission gear (504).

5. A rapid curing apparatus for PCB circuit boards as claimed in claim 4 wherein: The heat dissipation unit (6) comprises a second transmission gear (601), a second driving pulley (602), a second transmission pulley (603), a second rotating shaft (604) and a second fan (605), the second transmission gear (601) is engaged with the first transmission gear (504), a second transmission rod (606) is fixedly sleeved between the second transmission gear (601) and the second driving pulley (602), the second transmission rod (606) is rotatably connected to the connecting frame (401) through a bearing seat, the second transmission pulley (603) is fixedly connected to one end of the second rotating shaft (604), the second fan (605) is fixedly connected to the other end of the second rotating shaft (604), a dustproof filter screen (607) is fixed to the outer side of the air outlet cover (102), the second rotating shaft (604) and the middle part of the dustproof filter screen (607) are rotatably connected through a bearing, the second fan (605) is located in the inside of the air outlet cover (102), and the second transmission pulley (603) and the second driving pulley (602) are drivingly connected with a second synchronous belt (608).

6. The rapid curing apparatus for a PCB circuit board of claim 1, wherein: The placing unit (2) comprises a first fixed frame (203) and a second fixed frame (204), a plurality of connecting rods (205) are welded and fixed between the first fixed frame (203) and the second fixed frame (204), the baffle (201) is fixed at both ends of the first fixed frame (203) and the second fixed frame (204), the first fixed frame (203) is provided through up and down, the bottom of the second fixed frame (204) is fixed with a bottom plate (206), the top surface of the bottom plate (206) is not coincident with the top surface of the second fixed frame (204), a plurality of partition strips (207) are fixed at the same positions of the inner side of the first fixed frame (203) and the top of the bottom plate (206), the two partition strips (207) adjacently distributed have a placing space for the PCB to pass through.

7. A rapid curing apparatus for PCB circuit boards as defined in claim 6, wherein: The outer side of the baffle (201) is fixedly sleeved with a sealing strip (208), and the sealing strip (208) and the outer side open end of the baking cavity (101) are seamlessly connected.

8. The apparatus for rapid curing of a PCB circuit board of claim 4, wherein: The number of teeth of the one-way gear (503) is more than that of the first transmission gear (504).

9. The rapid curing apparatus for a PCB circuit board of claim 1, wherein: The oven (1) is fixed with a guide rail (7) away from one side of the access unit (3), a sliding block (8) is slidably connected on the guide rail (7), and the sliding block (8) is fixed with the bottom of the moving plate (202).

10. The rapid curing apparatus for a PCB circuit board of claim 5, wherein: The outer side of the second rotating shaft (604) is fixedly sleeved with a connecting block (609), one end of the connecting block (609) is fixed with a cleaning brush (6010), and the brush surface of the cleaning brush (6010) is in close contact with the outer side of the dustproof filter screen (607).

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