Three-bin high-efficiency transfer-bin type printed circuit board vacuum plugging machine and printed circuit board conveying method

Abstract

The present invention belongs to the technical field of printing equipment, and specifically relates to a three-bin high-efficiency transfer bin type printed circuit board vacuum plugging machine and a printed circuit board conveying method, comprising a shell, the shell having a printing bin, a feeding bin and a discharging bin, and a processing table located in the printing bin; the feeding bin and the discharging bin are both located at the top of the printing bin, and both the feeding bin and the discharging bin have a bottom bin opening and a top bin opening; it also includes an upper cover corresponding to the feeding bin and the discharging bin, and a feeding device, a discharging device, and a transfer device located in the printing bin; the feeding device is directly opposite to the feeding bin up and down, and the discharging device is directly opposite to the discharging bin up and down, and both the feeding device and the discharging device include a lifting platform for placing printed circuit boards; the transfer device is used to transport printed circuit boards between the lifting platform of the feeding device and the processing table, and between the lifting platform of the discharging device and the processing table. The required volume of the feeding bin and the discharging bin is small, the time required for vacuuming is short, and the overall printing efficiency of the vacuum plugging machine is higher.

Description

Technical Field

[0001] The invention belongs to the technical field of printed board printing equipment, and in particular relates to a three-bin high-efficiency transfer-bin type printed board vacuum plugging machine and a printed board conveying method. Background Art

[0002] Resin filling technology refers to a technology that uses a scraper to squeeze and pressure difference to effectively fill the through holes or blind holes of a printed circuit board with resin under a vacuum environment.

[0003] The vacuum plugging machine based on resin filling technology is shown in the Chinese patent document with the authorization announcement number CN115230301B, which discloses a three-bin flow-type vacuum printing equipment and printing method, including a printing bin in the middle, a feed bin on the left, and a discharge bin on the right. The printing bin is sealed and separated or connected with the feed bin and the discharge bin by a movable door. A feed sealing door is provided on the left side of the feed bin, and a discharge sealing door is provided on the right side of the discharge bin. The first and second telescopic forks that can be telescoped to the left and right are provided on the frames in the feed bin and the discharge bin, and the first and second telescopic forks are connected to relatively arranged clamping claw assemblies. A printing mechanism and a processing table are provided in the printing bin.

[0004] When using the vacuum printing equipment of the prior art, the movable door between the feeding bin and the printing bin is first closed, the feeding sealing door is opened to allow the printed board to enter the feeding bin, and then the feeding sealing door is closed to evacuate the feeding bin, and then the movable door between the feeding bin and the printing bin is opened, and the first telescopic fork and the second telescopic fork of the feeding bin deliver the printed board into the printing bin, and then the first telescopic fork and the second telescopic fork are retracted into the feeding bin, and the movable door between the feeding bin and the printing bin is closed again. The steps for discharging are opposite to those for feeding.

[0005] The problem with the prior art is that the feed bin and the discharge bin are frequently broken and vacuumed during use. In the prior art, since it is necessary to set a first telescopic fork, a second telescopic fork, a supporting streamline and other structures in the feed bin and the discharge bin, the volume of the feed bin and the discharge bin is large, and the time consumed for vacuuming is long, resulting in low overall efficiency of the vacuum printing equipment. Summary of the invention

[0006] The present invention provides a three-bin high-efficiency rotating-bin type printed circuit board vacuum hole plugging machine to solve the technical problem in the prior art that the volume of the input bin and the output bin is large, resulting in low overall efficiency of the vacuum printing equipment; and also provides a printed circuit board conveying method of the three-bin high-efficiency rotating-bin type printed circuit board vacuum hole plugging machine to solve the above technical problem.

[0007] In order to solve the above problems, the three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine provided by the present invention adopts the following technical scheme: the three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine comprises:

[0008] The housing has a printing bin, a feeding bin and a discharging bin. The printing bin is provided with a printing mechanism and a processing table. The feeding bin and the discharging bin are respectively arranged on the left and right sides of the top of the printing bin. Both the feeding bin and the discharging bin have a bottom bin opening for connecting with the printing bin and a top bin opening for connecting with the outside. The three-bin high-efficiency rotating bin type printed circuit board vacuum plugging machine also includes:

[0009] The feeding device, discharging device and transfer device are arranged in the printing bin, the feeding device is directly opposite to the feeding bin up and down, and the discharging device is directly opposite to the discharging bin up and down. The feeding device and the discharging device both include a lifting platform for carrying printed boards, and each lifting platform has an isolation state of rising to close the bottom bin opening and a connection state of descending to open the bottom bin opening; the transfer device is used to transport the printed boards between the lifting platform of the feeding device and the processing table, and between the lifting platform of the discharging device and the processing table. The transfer device includes a guide rail located in the printing bin and extending left and right, and a transfer module slidably assembled on the guide rail, and the transfer module is used to clamp and release the printed boards;

[0010] The upper cover corresponding to the material input bin and the material output bin is used to open and close the top openings of the material input bin and the material output bin. When the upper cover opens the top opening of the material input bin, the printed board is placed in the material input bin, and when the upper cover opens the top opening of the material output bin, the printed board is taken out.

[0011] The vacuum unit is connected with the printing bin, the feeding bin and the discharging bin respectively.

[0012] Beneficial effects: The lifting platform is located in the printing bin. The lifting platform can carry the printed circuit board and close the bottom opening after rising. The upper cover is located on the outside of the shell. The feed bin and the discharge bin are only used for the passage of the printed circuit board. The required volume is small, the time required for breaking the vacuum and evacuating the vacuum is short, and the overall printing efficiency of the vacuum plugging machine is higher. The isolation and connection between the feed bin, the discharge bin and the printing bin are achieved by the lifting of the lifting platform. The feed bin and the discharge bin are located at the top of the printing bin. The left end of the guide rail can extend to the feed device, and the right end can extend to the discharge device. The transfer module can slide on the guide rail to realize the transportation of the printed circuit board. Compared with the method of setting a movable door and a telescopic fork in the prior art, the structure is also simpler, and larger printed circuit boards can be transported more smoothly.

[0013] As a further improvement, the lifting platform includes a sealing seat and a first clamping mechanism arranged on the sealing seat, the sealing seat is used to close the bottom opening when rising, and the first clamping mechanism is used to fix and clamp the printed circuit board.

[0014] As a further improvement, the first clamping mechanism includes two support frames arranged on the sealing seat and spaced apart from each other in the front and back directions, the support frames include a plurality of fixed pressing plates spaced apart in the left and right directions, the first clamping mechanism also includes a movable pressing plate corresponding to the fixed pressing plates one by one, the movable pressing plate having an avoidance position for moving to the side of the fixed pressing plate so that the printed circuit board is placed on the fixed pressing plate, and also having a pressing position for moving to the top of the fixed pressing plate and pressing the printed circuit board;

[0015] The first clamping mechanism also includes a pressure plate driving assembly for driving the movable pressure plate to move between the avoidance position and the pressing position.

[0016] As a further improvement, both support frames are slidably assembled on the sealing seat along the front-rear direction, so that the distance between the two support frames is adjustable to adapt to printed circuit boards of different widths. The adjustable distance between the two support frames can meet the clamping requirements of printed circuit boards of different widths and has stronger versatility.

[0017] As a further improvement, the transfer module includes two clamping units arranged at intervals in front and back, the two clamping units clamp the printed circuit board together, the two clamping units are slidably assembled on the guide rail, and the two clamping units are respectively arranged on the front and back sides of the feeding device, the processing table and the discharging device;

[0018] The transfer device comprises a transfer driving mechanism for driving the two clamping units to move synchronously.

[0019] As a further improvement, the transfer drive mechanism includes a synchronous wheel assembly and a synchronous belt wound around the outside of the synchronous wheel assembly and circulating, the synchronous belt includes a U-shaped inner layer part and a U-shaped outer layer part opening in the same direction along the left and right directions, the U-shaped outer layer part is located outside the U-shaped inner layer part, the U-shaped inner layer part includes two synchronous belt inner sections arranged at intervals in front and back, the U-shaped outer layer part includes two synchronous belt outer sections arranged at intervals in front and back, and each synchronous belt inner section and synchronous belt outer section are parallel to each other;

[0020] One of the clamping units is connected to the inner section of the synchronous belt on one side through a first connecting plate, and the other clamping unit is connected to the outer section of the synchronous belt on one side through a second connecting plate. The inner section of the synchronous belt on one side and the outer section of the synchronous belt on the other side have the same moving speed and direction, which can improve the synchronization of the movement of the two clamping units.

[0021] As a further improvement, the clamping unit includes a first displacement mechanism slidably mounted on the guide rail along the left-right direction and a plurality of clamping assemblies arranged on the output end of the first displacement mechanism, the plurality of clamping assemblies are arranged at intervals along the left-right direction, and the first displacement mechanism is used to drive the clamping assemblies to move forward and backward and up and down;

[0022] The clamping assembly includes a fixed pressing block and a movable pressing block, and the movable pressing block is used to press the printed board onto the fixed pressing block or release the printed board.

[0023] As a further improvement, there are two transfer modules, which are connected together, one of which is used to transport the printed circuit board between the lifting platform of the feeding device and the processing table, and the other transfer module is used to transport the printed circuit board between the processing table and the lifting platform of the discharging device.

[0024] As a further improvement, the three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine also includes a discharge device for placing the printed circuit board and a take-out device for taking out the printed circuit board;

[0025] The material discharging device and the material taking device both include a mounting frame, a second displacement mechanism and a second clamping mechanism arranged on the housing, the second displacement mechanism is arranged on the mounting frame, the second clamping mechanism is arranged on the output end of the second displacement mechanism, and the second displacement mechanism is used to drive the second clamping mechanism to move left and right and up and down;

[0026] The second clamping mechanism includes a mounting seat arranged on the output end of the second displacement mechanism, two arms slidably assembled on the mounting seat along the front-rear direction, and a plurality of support hooks arranged on each arm, each arm is provided with a clamping block telescopic part corresponding to each support hook, and the clamping block telescopic part is provided with a clamping block for pressing the printed circuit board onto the support hook.

[0027] The technical scheme of the transfer method of the three-bin high-efficiency transfer-bin type printed circuit board vacuum plugging machine is: a printed circuit board conveying method of the three-bin high-efficiency transfer-bin type printed circuit board vacuum plugging machine, comprising the following steps:

[0028] 1) During automatic operation, the feed bin, printing bin and discharge bin are connected, and the corresponding upper covers of the feed bin and discharge bin close the corresponding top bin openings, and the entire bin is in a vacuum state. Then, the bottom bin opening of the feed bin is closed, and after the vacuum of the feed bin is broken, the top bin opening of the feed bin is opened, and the printed board is placed on the lifting platform of the feed device, and the top bin opening of the feed bin is closed and the feed bin is vacuumed;

[0029] 2) The printed board is lowered into the printing chamber along with the lifting platform of the feeding device, and the transfer module clamps the printed board on the feeding device and transports it horizontally to the processing table for printing;

[0030] 3) After printing, the printed board is clamped by the transfer module and transported horizontally to the lifting platform of the discharge device. The lifting platform of the discharge device drives the printed board to move up and close the bottom opening of the discharge bin. After the vacuum in the discharge bin is broken, the top opening of the discharge bin is opened and the printed board is taken out.

[0031] The beneficial effects of the present invention are:

[0032] 1. The lifting platform is located in the printing bin. The lifting platform can carry the printed circuit board and close the bottom opening after rising. The upper cover is located on the outside of the shell. The feed bin and the discharge bin are only used for the passage of the printed circuit board. The required volume is small, and the time required for breaking the vacuum and evacuating the vacuum is short. The overall printing efficiency of the vacuum plugging machine is higher. The isolation and connection between the feed bin, the discharge bin and the printing bin are achieved by the lifting of the lifting platform. The feed bin and the discharge bin are located at the top of the printing bin. The left end of the guide rail can extend to the feed device, and the right end can extend to the discharge device. The transfer module can slide on the guide rail to realize the transportation of the printed circuit board. Compared with the method of setting movable doors and telescopic forks in the prior art, the structure is also simpler, and larger printed circuit boards can be transported more smoothly.

[0033] 2. During the vacuum printing process, the movement path of the printed circuit board is a U-shaped path that goes down first, then moves horizontally, and then goes up. With this conveying method, the feed bin and the discharge bin can be arranged on the top of the shell, and the lifting platform is used to achieve the isolation and connection between the printing bin and the feed bin and the discharge bin. The volume of the feed bin and the discharge bin is small, and the time required for breaking the vacuum and evacuating the vacuum is short, which can improve the vacuum printing efficiency of the vacuum plugging machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0035] Figure 1 This is a three-dimensional picture of a three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine;

[0036] Figure 2 This is a top view of the three-bin high-efficiency rotating-bin printed circuit board vacuum plugging machine;

[0037] Figure 3 for Figure 2 Sectional view of section AA;

[0038] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0039] Figure 5 This is a top view of the three-bin high-efficiency rotating-bin PCB vacuum plugging machine after removing the machine cover and the parts above the machine cover;

[0040] Figure 6 This is a three-dimensional diagram of the shell of the three-bin high-efficiency rotating-bin printed circuit board vacuum plugging machine;

[0041] Figure 7 for Figure 6 The enlarged view of point B in the middle;

[0042] Figure 8 It is a top view of the shell of the three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine;

[0043] Fig. 9 for Figure 8 Cross-sectional view of the middle BB section;

[0044] Fig.10 for Fig. 9 Enlarged view of point C in the middle;

[0045] Fig.11 for Fig. 9 The enlarged view of point D in the middle;

[0046] Fig.12 This is a three-dimensional diagram of the feeding device in the three-bin high-efficiency rotating-bin printed circuit board vacuum plugging machine;

[0047] Fig.13 It is a three-dimensional diagram of the lifting platform in the feeding device;

[0048] Fig.14 for Fig.13 Enlarged view of point E in the middle;

[0049] Fig.15 It is a three-dimensional diagram of the feeding and sealing device in the three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine;

[0050] Fig.16 for Fig.15 The enlarged view of F in the middle;

[0051] Fig.17 for Fig.15 Enlarged view of G in the middle;

[0052] Fig.18 This is a three-dimensional diagram of the transfer device in the three-bin high-efficiency transfer-bin type printed circuit board vacuum plugging machine;

[0053] Fig.19 It is an assembly diagram of the synchronous wheel assembly, the synchronous belt and the first sliding seat in the transfer device;

[0054] Fig. 20 is a three-dimensional diagram of a clamping unit in a transfer device;

[0055] Fig.21 It is a side view of a clamping unit in the transfer device;

[0056] Fig. 22 is a three-dimensional diagram of a clamping assembly in a transfer device;

[0057] Fig.23 This is a three-dimensional diagram of the unloading device in the three-bin high-efficiency rotating-bin printed circuit board vacuum plugging machine;

[0058] Fig.24 for Fig.23 The enlarged view of the H in the middle;

[0059] Fig.25 for Fig.23 Enlarged view of J in the middle.

[0060] Description of reference numerals:

[0061] 100, housing; 101, frame; 102, cover; 103, printing bin; 104, feed bin; 105, discharge bin; 106, processing table; 107, bottom opening of feed bin; 108, top opening of feed bin; 109, bottom opening of discharge bin; 110, top opening of discharge bin; 111, vacuum connection box; 112, connecting slot;

[0062] 200, feeding device; 201, lifting platform; 202, lifting cylinder; 203, sealing seat; 204, ring groove; 205, movable pressing plate; 206, column; 207, crossbeam; 208, connecting strip; 209, mounting plate; 210, fixed pressing plate; 211, rotary clamping cylinder; 212, first guide rail; 213, first slide block; 214, adjustment assembly; 215, rotary clamping cylinder piston rod;

[0063] 300. Discharging device;

[0064] 400, feeding bin closing device; 401, upper cover; 402, fifth guide rail; 403, sliding frame; 404, downward pressure cylinder; 405, guide column; 406, pulley; 407, transmission belt; 408, sliding frame connecting block; 409, second drive motor;

[0065] 500. Discharge bin closing device;

[0066] 600, transfer device; 601, second guide rail; 602, first transfer module; 603, second transfer module; 604, connecting rod; 605, clamping unit; 606, clamping assembly; 607, first sliding seat; 608, second sliding seat; 609, first driving mechanism; 610, third sliding seat; 611, second driving mechanism; 612, second slider; 613, third guide rail; 614, horizontal plate; 615, vertical plate; 616, third slider; 617, fourth guide rail; 618, fourth Slider; 619, bottom plate; 620, fixed pressure block; 621, movable pressure block; 622, clamping cylinder; 623, first hinge block; 624, second hinge block; 625, synchronous belt; 626, first synchronous wheel; 627, second synchronous wheel; 628, third synchronous wheel; 629, fourth synchronous wheel; 630, driving wheel; 631, first driving motor; 632, first connecting plate; 633, second connecting plate; 634, synchronous belt mounting seat; 635, synchronous belt inner section; 636, synchronous belt outer section;

[0067] 700, discharge device; 701, mounting frame; 702, second clamping mechanism; 703, first screw nut mechanism; 704, second screw nut mechanism; 705, mounting seat; 706, support arm; 707, support hook; 708, clamping block telescopic member; 709, clamping block; 710, adjustment mechanism; 711, guide bracket;

[0068] 800. Material taking device; 900. Vacuum unit; 1000. Printed circuit board. DETAILED DESCRIPTION

[0069] 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. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0070] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0071] The embodiment of the three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine provided by the present invention is as follows:

[0072] like Figures 1 to 25As shown, a three-bin high-efficiency transfer-bin type printed circuit board vacuum plugging machine (hereinafter referred to as the vacuum plugging machine) prints a printed circuit board 1000 in a vacuum environment. The vacuum plugging machine includes a housing 100, a printing mechanism (not shown in the figure), a processing table 106, a feeding device 200, a discharging device 300, a feeding bin sealing device 400, a discharging bin sealing device 500, a transfer device 600, a discharging device 700, a material taking device 800, and a vacuum unit 900.

[0073] like Figures 1 to 11 As shown, the housing 100 includes a frame 101 and a cover 102 buckled on the frame, and the frame 101 and the cover 102 together form a closed space. The cover 102 is in a "convex" shape, and the top surface in the middle position is higher than the top surfaces on the left and right sides.

[0074] The internal space of the shell 100 is divided into a printing bin 103, a feeding bin 104 and a discharging bin 105. The printing mechanism, the processing table 106, the feeding device 200, the discharging device 300 and the transfer device 600 are all located in the printing bin 103. The structure of the printing mechanism and the processing table 106 is consistent with the prior art and will not be repeated here.

[0075] The hood 102 has a certain wall thickness, and channels are opened on the left and right sides of the top of the hood 102 to connect the inside and outside of the hood 102 in the up-down direction, one of the channels forms an inlet bin 104, and the other channel forms an outlet bin 105. Here, it is defined that the inlet bin 104 is located on the left side and the outlet bin 105 is located on the right side. It should be noted that "left" and "right" are only relative concepts and do not limit the structure.

[0076] The bottom of the feed bin 104 has a feed bin bottom opening 107, the top of the feed bin has a feed bin top opening 108, and the bottom of the discharge bin 105 has a discharge bin bottom opening 109, and the top of the discharge bin has a discharge bin top opening 110. When the feed bin bottom opening 107 is open, the feed bin 104 and the printing bin 103 are connected; when the feed bin bottom opening 107 is closed, the feed bin 104 and the printing bin 103 are separated. When the discharge bin bottom opening 109 is open, the discharge bin 105 and the printing bin 103 are connected; when the discharge bin bottom opening 109 is closed, the discharge bin 105 and the printing bin 103 are separated.

[0077] A vacuum connection box 111 is connected to the inner side of the feed bin 104, and a connecting groove 112 connected to the vacuum connection box 111 is provided on the feed bin 104. The vacuum connection box 111 is connected to the vacuum unit 900 when in use, and is used to vacuum the feed bin 104. The structure of the discharge bin 105 is the same, and will not be repeated here.

[0078] The feeding device 200 is located on the left side of the processing table 106, and the discharging device 300 is located on the right side of the processing table 106. The feeding device 200 is vertically opposite to the feeding bin 104, and the discharging device 300 is vertically opposite to the discharging bin 105. The structures of the feeding device 200 and the discharging device 300 are the same, and the feeding device 200 is taken as an example for description.

[0079] like Figure 12 to Figure 14 As shown, the feeding device 200 includes a lifting platform 201 and a lifting drive mechanism.

[0080] The lifting platform 201 includes a sealing seat 203 and a first clamping mechanism. The sealing seat 203 is a box body with an open top and closed sides and bottom. An annular groove 204 is provided on the top surface of the box body. A sealing material is placed in the annular groove 204 to enhance the sealing effect. In other embodiments, an annular groove 204 can be provided on the top inner wall of the housing 100 and a sealing material can be placed therein to enhance the sealing effect.

[0081] The lifting drive mechanism is mounted on the frame 101, and is connected to the sealing seat 203 to drive the sealing seat 203 to move up and down. Specifically, the lifting drive mechanism may include a plurality of lifting cylinders 202 connected to the sealing seat 203. In other embodiments, the lifting drive mechanism may be a mechanism with a linear output end such as a screw nut mechanism.

[0082] The first clamping mechanism is installed on the sealing seat 203 and is used to fix and clamp the printed circuit board 1000. The first clamping mechanism includes a support frame, a movable pressing plate 205, a pressing plate driving assembly and an adjusting assembly 214.

[0083] There are two support frames arranged front and back, and the support frames include a column 206, a crossbeam 207, a connecting strip 208, a mounting plate 209, and a fixed pressure plate 210. The column 206 is installed on the sealing seat 203, and the crossbeam 207 is fixedly installed on the column 206. The crossbeam 207 extends in the left-right direction. There are two crossbeams 207 arranged at intervals in the left-right direction, and the connecting strip 208 connects the two crossbeams 207. The mounting plate 209 is fixedly installed on the crossbeam 207. There are multiple mounting plates 209, and the multiple mounting plates 209 are arranged at intervals in the left-right direction. The fixed pressure plate 210 corresponds to the mounting plate 209 one by one, and the fixed pressure plate 210 is fixedly installed on the top surface of the mounting plate 209.

[0084] The number of movable platens 205 and platen drive assemblies is equal to and corresponds to the number of fixed platens 210. The platen drive assembly here is a rotary clamping cylinder 211, the cylinder body of which is fixedly mounted on the bottom surface of the mounting plate 209, the rotary clamping cylinder piston rod 215 of the rotary clamping cylinder 211 passes upward through the mounting plate 209, and the movable platen 205 is fixedly mounted on the top of the rotary clamping cylinder piston rod 215. The rotary clamping cylinder piston rod 215 of the rotary clamping cylinder 211 can drive the movable platen 205 to rotate around the axis extending up and down, and can also drive the movable platen 205 to move up and down.

[0085] One end of the movable platen 205 is fixedly mounted on the piston rod of the rotary clamping cylinder 211. When the rotary clamping cylinder 211 drives the movable platen 205 to rotate to the side of the fixed platen 210, the printed board 1000 can be placed on the fixed platen 210 from above, and the movable platen 205 is in the avoidance position. After the printed board 1000 is placed on the fixed platen 210, the rotary clamping cylinder 211 drives the movable platen 205 to rotate to the top of the fixed platen 210, and at the same time, the rotary clamping cylinder 211 drives the movable platen 205 to move downward, pressing the printed board 1000 against the fixed platen 210, and the movable platen 205 is in the pressing position. In other embodiments, the pressure plate driving assembly can be a rotary clamping cylinder, or the following method can be adopted: the pressure plate driving assembly includes a first cylinder and a second cylinder, the first cylinder is installed on the mounting plate 209, the second cylinder is installed on the output end of the first cylinder, and the movable pressure plate 205 is installed on the second cylinder. The first cylinder drives the second cylinder and the movable pressure plate 205 to move horizontally to avoid the printed circuit board 1000; the second cylinder drives the movable pressure plate 205 to move downward to press the printed circuit board 1000 against the fixed pressure plate 210.

[0086] In order to adapt to printed circuit boards 1000 of different widths, the two support frames are slidably assembled on the sealing seat 203 along the front-to-back direction. Specifically, a first guide rail 212 is fixedly installed on the sealing seat 203 corresponding to each column 206, and a first slider 213 is fixedly installed at the bottom of each column 206. The first slider 213 is slidably assembled on the first guide rail 212.

[0087] The function of the adjustment assembly 214 is to drive the two support frames to move synchronously, so as to move closer to or farther from each other. Specifically, the adjustment assembly 214 may include a screw nut mechanism corresponding to the two support frames, and the screws in the two screw nut mechanisms have opposite rotation directions, so as to achieve synchronous movement of the two support frames.

[0088] The lifting platform 201 of the feeding device 200 and the discharging device 300 has two states, namely, an isolated state and a connected state. When the feeding device 200 is in the isolated state, the lifting drive mechanism presses the top surface of the lifting platform 201 against the inner top wall of the housing 100, closing the bottom opening 107 of the feeding bin, and the feeding bin 104 is separated from the printing bin 103. When the feeding device 200 is in the connected state, the lifting drive mechanism drives the lifting platform 201 to move downward, and the feeding bin 104 is connected with the printing bin 103. The state of the discharging device 300 is similar to that of the feeding device 200.

[0089] The function of the transfer device 600 is to transfer the printed circuit board 1000 on the feeding device 200 to the processing table 106 , and to transfer the printed circuit board 1000 on the processing table 106 to the discharging device 300 .

[0090] like Figures 18 to 22 As shown, the transfer device 600 includes a second guide rail 601, a first transfer module 602, a second transfer module 603, and a transfer drive mechanism for driving the first transfer module 602 and the second transfer module 603 to move left and right. The second guide rail 601 extends in the left-right direction, with its left end extending to the feeding device 200 and its right end extending to the discharging device 300. The second guide rail 601 includes two tracks spaced apart in the front-to-back direction. The two tracks are respectively located at the front and rear sides of the feeding device 200, the processing table 106, and the discharging device 300.

[0091] The first transfer module 602 and the second transfer module 603 are both slidably mounted on the second guide rail 601 . The first transfer module 602 and the second transfer module 603 are connected via a connecting rod 604 to achieve synchronous movement.

[0092] The first transfer module 602 moves back and forth between the feeding device 200 and the processing table 106, and its function is to clamp the unprinted printed circuit board 1000 on the feeding device 200 and transport it to the processing table 106; the second transfer module 603 moves back and forth between the processing table 106 and the discharging device 300, and its function is to clamp the printed printed circuit board 1000 on the processing table 106 and transport it to the discharging device 300.

[0093] The first transfer module 602 and the second transfer module 603 have the same structure, and the structure of the first transfer module 602 is taken as an example for description.

[0094] The first transfer module 602 includes two clamping units 605 arranged front and back, the clamping unit 605 includes a first displacement mechanism and a clamping assembly 606, the first displacement mechanism is slidably assembled on the second guide rail 601 along the left and right direction, and the clamping assembly 606 is installed on the output end of the first displacement mechanism.

[0095] The first displacement mechanism includes a first sliding seat 607, a second sliding seat 608, a first driving mechanism 609, a third sliding seat 610, and a second driving mechanism 611. The first sliding seat 607 is slidably assembled on the second guide rail 601 along the left-right direction, the second sliding seat 608 is slidably assembled on the first sliding seat 607 along the front-back direction, the first driving mechanism 609 drives the second sliding seat 608 to move forward and backward, the third sliding seat 610 is slidably assembled on the second sliding seat 608 along the up-down direction, and the second driving mechanism 611 drives the third sliding seat 610 to move up and down; the clamping assembly 606 is fixedly installed on the third sliding seat 610.

[0096] Specifically, a second slider 612 is fixed to the bottom of the first sliding seat 607, and the second slider 612 slides on the second guide rail 601. The clamping units 605 located on the same side in the front-to-back direction of the first transfer module 602 and the second transfer module 603 are connected by a connecting rod 604. A third guide rail 613 extending frontward and rearward is installed on the top of the first sliding seat 607.

[0097] The second sliding seat 608 is an L-shaped sliding seat, including a horizontal plate 614 and a vertical plate 615. A third sliding block 616 cooperating with the third guide rail 613 is installed at the bottom of the horizontal plate 614. The first driving mechanism 609 is installed on the first sliding seat 607, and can be a screw nut mechanism or a cylinder, etc., to drive the second sliding seat 608 to move forward and backward. A fourth guide rail 617 extending up and down is installed on the vertical plate 615 of the second sliding seat 608.

[0098] The third sliding seat 610 is provided with a fourth slider 618 cooperating with the fourth guide rail 617 . The second driving mechanism 611 is installed on the second sliding seat 608 , and specifically can be a screw nut mechanism or a cylinder, etc., for driving the third sliding seat 610 to move up and down.

[0099] There are multiple clamping assemblies 606, and the multiple clamping assemblies 606 are arranged at intervals in the left-right direction. Specifically, the clamping assemblies 606 are cantilevered on the third sliding seat 610 in the front-to-back direction. The clamping assembly 606 includes a bottom plate 619, a fixed pressure block 620, a movable pressure block 621, and a clamping cylinder 622. The bottom plate 619 extends in the front-to-back direction, one end of the bottom plate 619 is fixedly mounted on the third sliding seat 610, and a first hinge block 623 is fixedly mounted on the bottom plate 619.

[0100] The fixed pressing block 620 is located at one end of the bottom plate 619 away from the third sliding seat 610, that is, at one end close to the middle position in the front-to-back direction. The movable pressing block 621 is T-shaped as a whole, one corner of which is hinged on the bottom plate 619 around an axis extending left and right. When the movable pressing block 621 swings downward, it can cooperate with the fixed pressing block 620 to clamp the printed circuit board 1000.

[0101] The cylinder body of the clamping cylinder 622 is hinged on the first hinge block 623 around an axis extending left and right, a second hinge block 624 is fixedly mounted on the piston rod of the clamping cylinder 622, and one corner of the movable pressing block 621 is hinged on the second hinge block 624 around an axis extending left and right. The movable pressing block 621 can be driven to swing up and down by the extension and contraction of the clamping cylinder 622.

[0102] The transfer drive mechanism includes a synchronous belt 625, a first synchronous wheel 626, a second synchronous wheel 627, a third synchronous wheel 628, a fourth synchronous wheel 629, a driving wheel 630, a first driving motor 631, a first connecting plate 632, and a second connecting plate 633. The first synchronous wheel 626, the second synchronous wheel 627, the third synchronous wheel 628, and the fourth synchronous wheel 629 all have two wheels arranged at intervals in the front-to-back direction. The first synchronous wheel 626 is rotatably mounted on a synchronous wheel mounting seat 634 fixed on the frame 101, and the second synchronous wheel 627, the third synchronous wheel 628, the fourth synchronous wheel 629, and the driving wheel 630 are all rotatably mounted on the top of the frame 101. Specifically, the first driving motor 631 is located at the bottom of the frame 101.

[0103] The first synchronous wheel 626, the second synchronous wheel 627, the third synchronous wheel 628, the fourth synchronous wheel 629, and the driving wheel 630 are arranged in sequence along the left-right direction, and in the left-right direction, the distance between the first synchronous wheel 626 and the second synchronous wheel 627 is larger, and the distance between the second synchronous wheel 627, the third synchronous wheel 628, and the fourth synchronous wheel 629 is smaller. In the front-back direction, the first synchronous wheel 626 and the third synchronous wheel 628 are located at the same position, the two second synchronous wheels 627 are located between the two first synchronous wheels 626, the two fourth synchronous wheels 629 are located between the two second synchronous wheels 627, and the driving wheel 630 is located between the two fourth synchronous wheels 629.

[0104] The two first synchronous wheels 626 , the two second synchronous wheels 627 , the two third synchronous wheels 628 , and the two fourth synchronous wheels 629 are all symmetrically arranged about the central axis of the driving wheel 630 .

[0105] The synchronous belt 625 is wound between the driving wheel 630, the first synchronous wheel 626, the second synchronous wheel 627, the third synchronous wheel 628, and the fourth synchronous wheel 629. After winding, the synchronous belt 625 forms a U-shaped inner layer part and a U-shaped outer layer part, and the openings of the U-shaped inner layer part and the U-shaped outer layer part are in the same direction. The U-shaped inner layer part includes two mutually parallel synchronous belt inner sections 635, and the two synchronous belt inner sections 635 extend left and right and are arranged at intervals in front and back. The U-shaped outer layer part includes two mutually parallel synchronous belt outer sections 636, and the two synchronous belt outer sections 636 extend left and right and are arranged at intervals in front and back.

[0106] In the front-to-back direction, the conveying directions of the inner synchronous belt section 635 on one side and the outer synchronous belt section 636 on the other side are consistent, and the moving speeds of the inner synchronous belt section 635 and the outer synchronous belt section 636 are equal.

[0107] The first connecting plate 632 connects the inner section 635 of the synchronous belt on one side and the first sliding seat 607 in the clamping unit 605 on that side, and the second connecting plate 633 connects the outer section 636 of the synchronous belt on the other side and the first sliding seat 607 in the clamping unit 605 on that side, so that the clamping units 605 on the front and rear sides can move synchronously in the same direction with better synchronization.

[0108] When the printed circuit board 1000 on the feeding device 200 is transferred to the processing table 106, the two clamping units 605 of the first transfer module 602 move to the feeding device 200. In the left and right directions, the clamping components 606 of the clamping units 605 and the fixed pressure plate 210 of the feeding device 200 are arranged alternately in sequence. The first displacement mechanism drives the clamping component 606 to move and clamp the printed circuit board 1000. Then, the first clamping mechanism of the feeding device 200 releases the printed circuit board 1000. After the first displacement mechanism drives the clamping component 606 to move upward, the first transfer module 602 moves horizontally toward the processing table 106. After arriving at the processing table 106, the printed circuit board 1000 is placed on the processing table 106. After the placement is completed, the first transfer module 602 is reset again for the next clamping. The working method of the second transfer module 603 is the same as that of the first transfer module 602.

[0109] In this embodiment, the distance between the first transfer module 602 and the second transfer module 603 is the same as the distance between the feeding device 200 and the processing table 106 and the distance between the discharging device 300 and the processing table 106, so that when the first transfer module 602 moves to the left to the feeding device 200, the second transfer module 603 moves to the processing table 106, and when the first transfer module 602 moves to the right to the processing table 106, the second transfer module 603 moves to the discharging device 300.

[0110] The feed bin closing device 400 and the discharge bin closing device 500 are both installed on the top outer side of the housing 100. The feed bin closing device 400 is used to open and close the top port 108 of the feed bin, and the discharge bin closing device 500 is used to open and close the top port 110 of the discharge bin. The feed bin closing device 400 and the discharge bin closing device 500 have the same structure, and the feed bin closing device 400 is used as an example for description.

[0111] like Figures 15 to 17As shown, the feed bin closing device 400 includes an upper cover 401 and an upper cover driving mechanism, and the upper cover driving mechanism is used to drive the upper cover 401 to translate in the front-back direction and move up and down. Specifically, the upper cover driving mechanism includes a fifth guide rail 402, a sliding frame 403, a downward pressure cylinder 404 and a sliding frame driving assembly.

[0112] The fifth guide rail 402 is fixed on the housing 100 and extends in the front-rear direction. Specifically, the fifth guide rail 402 is fixedly mounted on the top of the hood 102. The fifth guide rail 402 includes two rails disposed on both sides of the top port 108 of the feed bin in the left-right direction. The left and right sides of the sliding frame 403 are slidably assembled on the fifth guide rail 402.

[0113] A guide hole is provided on the sliding frame 403 , and a guide post 405 is fixedly installed on the upper cover 401 corresponding to the guide hole. The guide post 405 penetrates into the guide hole, and the upper cover 401 is guided and assembled below the sliding frame 403 along the up-down direction.

[0114] The cylinder body of the downward pressing cylinder 404 is fixedly mounted on the sliding frame 403 , and the piston rod of the downward pressing cylinder 404 is fixed on the upper cover 401 . The downward pressing cylinder 404 drives the upper cover 401 to rise and fall.

[0115] The function of the sliding frame driving assembly is to drive the sliding frame 403 to move forward and backward. The sliding frame driving assembly is located on one side of the sliding frame 403 in the left-right direction, specifically, on the side away from the middle position of the housing 100. The sliding frame driving assembly includes two pulleys 406, a transmission belt 407, a sliding frame connecting block 408 and a second driving motor 409. The two pulleys 406 are arranged at intervals along the front-back direction, the transmission belt 407 is wound around the outside of the two pulleys 406, the sliding frame connecting block 408 connects the transmission belt 407 and the sliding frame 403, and the second driving motor 409 is connected to one of the pulleys 406. After the second driving motor 409 is started, the driving pulley 406 rotates, and the sliding frame connecting block 408 and the sliding frame 403 are driven to move through the transmission belt 407.

[0116] The feed bin closing device 400 and the discharge bin closing device 500 both have two states, namely, an open state and a closed state. When in the open state, the feed bin closing device 400 opens the top hatch 108 of the feed bin, and the discharge bin closing device 500 opens the top hatch 110 of the discharge bin. When in the closed state, the feed bin closing device 400 closes the top hatch 108 of the feed bin, and the discharge bin closing device 500 closes the top hatch 110 of the discharge bin.

[0117] The unloading device 700 places the unprocessed printed circuit board 1000 on the lifting platform of the feeding device 200, and the taking device 800 takes away the printed circuit board 1000 on the lifting platform of the discharging device 300. The structures of the two are the same, and the unloading device 700 is taken as an example for description.

[0118] like Figure 23 to Figure 25 As shown, the unloading device 700 includes a mounting frame 701, a second displacement mechanism, and a second clamping mechanism 702. The mounting frame 701 is fixedly mounted on the frame 101; the second clamping mechanism 702 is used to clamp the printed board 1000; the second displacement mechanism is arranged on the mounting frame 701, and the second displacement mechanism drives the second clamping mechanism 702 to move left and right and up and down. When moving left and right, the printed board 1000 can correspond to the top port 108 of the feeding bin, and when moving downward, the printed board 1000 can be placed on the lifting platform of the feeding device 200. When the second clamping mechanism 702 of the picking device 800 moves downward, it can clamp the printed board 1000 placed on the lifting platform 201 of the unloading device 300.

[0119] The mounting frame 701 includes a guide bracket 711 extending left and right. The second displacement mechanism includes a first screw nut mechanism 703 and a second screw nut mechanism 704 arranged on the guide bracket 711. The output end of the first screw nut mechanism 703 moves left and right, and the output end of the second screw nut mechanism 704 moves up and down. The output end that moves up and down is the output end of the second displacement mechanism.

[0120] The second clamping mechanism 702 includes a mounting seat 705, a support arm 706, a support hook body 707, a clamping block telescopic member 708, and a clamping block 709. The clamping block telescopic member 708 here is a clamping block telescopic cylinder. The mounting seat 705 is fixedly mounted on the second displacement mechanism. There are two support arms 706, which extend in the left-right direction. The two support arms 706 are arranged at intervals in the front-back direction. A plurality of support hook bodies 707 are fixedly mounted on each support arm 706. The clamping block telescopic member 708 corresponds to the support hook body 707 one by one. The clamping block telescopic member 708 is fixedly mounted on the support arm 706, and the clamping block 709 is fixedly mounted on the clamping block telescopic member 708. In other embodiments, the clamping block telescopic member 708 can be an electric cylinder or an oil cylinder.

[0121] The two support arms 706 are assembled on the mounting base 705 in a guided sliding manner along the front-rear direction. Correspondingly, an adjustment mechanism 710 is provided on the mounting base 705 for driving the two support arms 706 to move closer to or away from each other. The adjustment mechanism 710 here may include two screw-nut mechanisms. The screws of the two screw nuts rotate in opposite directions. By driving the two screw nuts to move synchronously, the two support arms 706 can be driven closer to or away from each other.

[0122] When in use, the two arms 706 are first moved away from each other, and the second displacement mechanism drives the two arms 706 to the position of the printed circuit board 1000. The two arms 706 are then moved closer to each other, and the printed circuit board 1000 is placed on the support hooks 707 of the two arms 706. Then the clamping block telescopic member 708 is extended downward to press the clamping block 709 onto the printed circuit board 1000.

[0123] When the discharge device 700 places the printed circuit board 1000 on the feeding device 200, the printed circuit board 1000 moves downward, and in the left and right directions, the support hook 707 of the discharge device 700 and the fixed pressure plate 210 of the feeding device 200 are arranged alternately in sequence. After the printed circuit board 1000 is placed on the feeding device 200, the clamping block telescopic member 708 retracts, and then the two supporting arms 706 move away from each other, and then the second displacement mechanism drives the supporting arms 706 to move upward.

[0124] The vacuum unit 900 is connected to the printing bin 103 , the feeding bin 104 , and the discharging bin 105 respectively, and performs vacuuming on the printing bin 103 , the feeding bin 104 , and the discharging bin 105 .

[0125] In this embodiment, a vacuum breaking component connected to the feeding bin 104, the printing bin 103 and the discharging bin 105 is also installed on the shell 100 to break the vacuum. The vacuum breaking component is a prior art and will not be described in detail here.

[0126] The use process of the present invention: in the initial state, the feed bin closing device 400 closes the top opening 108 of the feed bin, the discharge bin closing device 500 closes the top opening 110 of the discharge bin, the feed device 200 opens the bottom opening 107 of the feed bin, and the discharge device 300 opens the bottom opening 109 of the discharge bin. At this time, the feed bin 104, the printing bin 103, and the discharge bin 105 are connected and are all in a vacuum environment.

[0127] When feeding begins, the feeding device 200 closes the bottom port 107 of the feeding bin, the discharging device 300 remains unchanged, the feeding bin 104 and the printing bin 103 are separated, and after the feeding bin 104 breaks the vacuum, the feeding bin closing device 400 opens the top port 108 of the feeding bin, and the discharging device 700 places the printed board 1000 on the lifting platform 201 of the feeding device 200. Then the feeding bin closing device 400 closes the top port 108 of the feeding bin, forming a closed space in the feeding bin 104, and the vacuum unit 900 evacuates the feeding bin 104. When the vacuum degrees of the feeding bin 104 and the printing bin 103 are consistent, the lifting platform 201 of the feeding device 200 descends, and the bottom port 107 of the feeding bin is opened while the printed board 1000 is conveyed downward. The first transfer module 602 transfers the printed board 1000 at the feeding device 200 to the processing table 106 for printing.

[0128] After printing is completed, the second transfer module 603 transfers the printed board 1000 at the processing table 106 to the discharge device 300, and the lifting platform 201 of the discharge device 300 moves upward and closes the bottom port 109 of the discharge bin, and the printing bin 103 and the discharge bin 105 are separated. After breaking the vacuum, the discharge bin closing device 500 opens the top port 110 of the discharge bin, and the material taking device 800 takes the printed board 1000 from the discharge bin 105, and then the discharge bin closing device 500 closes the top port 110 of the discharge bin, and a closed space is formed in the discharge bin 105. The vacuum unit 900 evacuates the discharge bin 105. When the vacuum degree of the discharge bin 105 and the printing bin 103 is consistent, the lifting platform 201 of the discharge device 300 descends and opens the bottom port 109 of the discharge bin.

[0129] In the above embodiment, the material discharging device 700 and the material taking device 800 both include a mounting frame 701, a second displacement mechanism and a second clamping mechanism 702. In other embodiments, the material discharging device 700 and the material taking device 800 may include a robot, the execution end of the robot is connected to a clamping mechanism, and the robot drives the clamping mechanism. Alternatively, a manual method of taking and placing printed circuit boards may also be adopted.

[0130] In the above embodiment, the transfer drive mechanism includes a synchronous belt 625. In other embodiments, the transfer drive mechanism may be a screw nut mechanism. In other embodiments, the transfer device 600 may include only one transfer module, which realizes both the loading of materials from the feeding device 200 to the processing table 106 and the unloading of materials from the processing table 106 to the discharging device 300.

[0131] In other embodiments, the first clamping mechanism may be a central positioning mechanism having a clapping function in four directions, front, back, left, and right. After the printed circuit board is placed on the sealing seat, the central positioning mechanism positions the printed circuit board.

[0132] In other embodiments, the machine cover may include a main machine cover and a feed bin cover and a discharge bin cover. A printing bin is formed inside the main machine cover. The feed bin cover is buckled on the top of the main machine cover to form a feed bin inside. The discharge bin cover is buckled on the top of the main machine cover to form an discharge bin inside.

[0133] Embodiments of the printed circuit board conveying method of the three-bin high-efficiency transfer-bin type printed circuit board vacuum plugging machine provided by the present invention:

[0134] The printed circuit board conveying method of the three-bin high-efficiency transfer-bin type printed circuit board vacuum plugging machine adopts the above-mentioned three-bin high-efficiency transfer-bin type printed circuit board vacuum plugging machine, comprising the following steps:

[0135] 1) During automatic operation, the feed bin 104, the printing bin 103, and the discharge bin 105 are connected, and the upper covers 401 of the feed bin closing device 400 and the discharge bin closing device 500 correspondingly close the top bin opening 108 of the feed bin and the top bin opening 110 of the discharge bin, and the entire bin is in a vacuum state. Then, the bottom bin opening 107 of the feed bin is closed, and after the vacuum of the feed bin 104 is broken, the top bin opening 108 of the feed bin is opened, and the printed board 1000 is placed on the lifting platform 201 of the feed device 200, and the top bin opening 108 of the feed bin is closed and the feed bin 104 is vacuumed;

[0136] 2) The printed circuit board 1000 is lowered into the printing chamber 103 along with the lifting platform 201 of the feeding device 200, and the transfer module clamps the printed circuit board 1000 on the feeding device 200 and transports it horizontally to the processing table 106 for printing;

[0137] 3) After printing, the printed board 1000 is clamped by the transfer module and transported horizontally to the lifting platform of the discharge device 300. The lifting platform of the discharge device 300 drives the printed board 1000 to move upward and closes the bottom opening 109 of the discharge bin. After the vacuum of the discharge bin 105 is broken, the top opening 110 of the discharge bin is opened and the printed board is taken out.

[0138] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. Three-bin high-efficiency transfer-bin printed circuit board vacuum plugging machine, including: The housing has a printing bin, a feeding bin and a discharging bin. The printing bin is provided with a printing mechanism and a processing table. The housing is characterized in that the feeding bin and the discharging bin are respectively arranged on the left and right sides of the top of the printing bin. The feeding bin and the discharging bin both have a bottom bin opening for connecting with the printing bin and a top bin opening for connecting with the outside. The three-bin high-efficiency rotating bin type printed circuit board vacuum plugging machine also includes: The feeding device, discharging device and transfer device are arranged in the printing bin, the feeding device is directly opposite to the feeding bin up and down, and the discharging device is directly opposite to the discharging bin up and down. The feeding device and the discharging device both include a lifting platform for carrying printed boards, and each lifting platform has an isolation state of rising to close the bottom bin opening and a connection state of descending to open the bottom bin opening; the transfer device is used to transport the printed boards between the lifting platform of the feeding device and the processing table, and between the lifting platform of the discharging device and the processing table. The transfer device includes a guide rail located in the printing bin and extending left and right, and a transfer module slidably assembled on the guide rail, and the transfer module is used to clamp and release the printed boards; The upper cover corresponding to the material input bin and the material output bin is used to open and close the top openings of the material input bin and the material output bin. When the upper cover opens the top opening of the material input bin, the printed board is placed in the material input bin, and when the upper cover opens the top opening of the material output bin, the printed board is taken out. The vacuum unit is connected with the printing bin, the feeding bin and the discharging bin respectively; The transfer module includes two clamping units arranged at intervals in front and back, the two clamping units clamp the printed circuit board together, the two clamping units are slidably assembled on the guide rail, and the two clamping units are arranged at the front and back sides of the feeding device, the processing table and the discharging device; the transfer device includes a transfer driving mechanism for driving the two clamping units to move synchronously; The clamping unit includes a first displacement mechanism slidably mounted on the guide rail along the left-right direction and a plurality of clamping assemblies arranged on the output end of the first displacement mechanism, wherein the plurality of clamping assemblies are arranged at intervals along the left-right direction, and the first displacement mechanism is used to drive the clamping assemblies to move forward and backward and up and down; The clamping assembly includes a fixed pressing block and a movable pressing block, wherein the movable pressing block is used to press the printed board onto the fixed pressing block or to release the printed board; There are two transfer modules, which are connected together. One of the transfer modules is used to transport the printed circuit board between the lifting platform of the feeding device and the processing platform, and the other transfer module is used to transport the printed circuit board between the processing platform and the lifting platform of the discharging device. The distance between the two transfer modules is the same as the distance between the feeding device and the processing platform and the distance between the discharging device and the processing platform.

2. The three-bin high-efficiency rotating-bin printed circuit board vacuum plugging machine according to claim 1 is characterized in that: The lifting platform comprises a sealing seat and a first clamping mechanism arranged on the sealing seat. The sealing seat is used to close the bottom opening when rising, and the first clamping mechanism is used to fix and clamp the printed circuit board.

3. The three-bin high-efficiency rotating-bin printed circuit board vacuum plugging machine according to claim 2 is characterized in that: The first clamping mechanism includes two support frames arranged on the sealing seat and spaced apart from each other in the front and back directions, the support frames include a plurality of fixed pressing plates spaced apart from each other in the left and right directions, the first clamping mechanism also includes a movable pressing plate corresponding to the fixed pressing plates one by one, the movable pressing plate having an avoidance position that moves to the side of the fixed pressing plate so that the printed circuit board is placed on the fixed pressing plate, and also having a pressing position that moves to the top of the fixed pressing plate and presses the printed circuit board; The first clamping mechanism also includes a pressure plate driving assembly for driving the movable pressure plate to move between the avoidance position and the pressing position.

4. The three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine according to claim 3 is characterized in that: The two support frames are both slidably assembled on the sealing seat along the front-rear direction, so that the distance between the two support frames can be adjusted to adapt to printed circuit boards of different widths.

5. The three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine according to claim 1 is characterized in that: The transfer drive mechanism includes a synchronous wheel assembly and a synchronous belt wound around the outside of the synchronous wheel assembly and circulating, the synchronous belt includes a U-shaped inner layer part and a U-shaped outer layer part opening in the same direction along the left and right directions, the U-shaped outer layer part is located outside the U-shaped inner layer part, the U-shaped inner layer part includes two synchronous belt inner sections arranged at intervals in front and back, the U-shaped outer layer part includes two synchronous belt outer sections arranged at intervals in front and back, and each synchronous belt inner section and synchronous belt outer section are parallel to each other; One of the clamping units is connected to the inner section of the synchronous belt on one side through a first connecting plate, and the other clamping unit is connected to the outer section of the synchronous belt on one side through a second connecting plate.

6. The three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine according to any one of claims 1 to 5, characterized in that: The three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine also includes a discharge device for placing printed circuit boards and a take-out device for taking out printed circuit boards; The material discharging device and the material taking device both include a mounting frame, a second displacement mechanism and a second clamping mechanism arranged on the housing, the second displacement mechanism is arranged on the mounting frame, the second clamping mechanism is arranged on the output end of the second displacement mechanism, and the second displacement mechanism is used to drive the second clamping mechanism to move left and right and up and down; The second clamping mechanism includes a mounting seat arranged on the output end of the second displacement mechanism, two arms slidably assembled on the mounting seat along the front-rear direction, and a plurality of support hooks arranged on each arm, each arm is provided with a clamping block telescopic part corresponding to each support hook, and the clamping block telescopic part is provided with a clamping block for pressing the printed circuit board onto the support hook.

7. A printed circuit board conveying method for a three-bin high-efficiency transfer-bin type printed circuit board vacuum plugging machine, characterized in that: The three-bin high-efficiency rotating-bin type printed circuit board vacuum plugging machine as claimed in claim 1 comprises the following steps: 1) During automatic operation, the feed bin, printing bin and discharge bin are connected, and the corresponding upper covers of the feed bin and discharge bin close the corresponding top bin openings, and the entire bin is in a vacuum state. Then, the bottom bin opening of the feed bin is closed, and after the vacuum of the feed bin is broken, the top bin opening of the feed bin is opened, and the printed board is placed on the lifting platform of the feed device, and the top bin opening of the feed bin is closed and the feed bin is vacuumed; 2) The printed board is lowered into the printing chamber along with the lifting platform of the feeding device, and the transfer module clamps the printed board on the feeding device and transports it horizontally to the processing table for printing; 3) After printing, the printed board is clamped by the transfer module and transported horizontally to the lifting platform of the discharge device. The lifting platform of the discharge device drives the printed board to move up and close the bottom opening of the discharge bin. After the vacuum in the discharge bin is broken, the top opening of the discharge bin is opened and the printed board is taken out.

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