CN114476628A

CN114476628A - PCB board automatic feeding device

Info

Publication number: CN114476628A
Application number: CN202210171019.7A
Authority: CN
Inventors: 罗雪峰
Original assignee: Shenzhen Xinhengtian Electronics Co ltd
Current assignee: Shenzhen Xinhengtian Electronics Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-05-13

Abstract

The invention discloses an automatic feeding device for a PCB (printed circuit board), which comprises a pair of conveying rails, wherein the two conveying rails are horizontally arranged oppositely; the automatic feeding device is characterized in that a mounting frame is arranged on one side of the feeding hole of the conveying track, a rotary table is rotatably mounted on the mounting frame, sliding holes are formed in the rotary table at intervals along the circumferential direction, the position, closest to the feeding hole of the conveying track, of the rotary table is a feeding end, and the position, farthest away from the feeding hole of the conveying track, of the rotary table is a material preparing end; the placing rack is arranged at the position, corresponding to the sliding hole, of the rotary table in a sliding mode towards the vertical direction, and a plurality of limiting slide ways for clamping empty boards of the PCB are arranged on the placing rack at intervals towards the vertical direction; the mounting frame is provided with a driving assembly for driving the placing frame at the feeding end to slide; the mounting bracket is provided with a first driving piece for driving the turntable to rotate and a second driving piece for driving the empty PCB corresponding to the conveying track to slide into the conveying track. This application has the effect that improves the blank board machining efficiency to the PCB board.

Description

PCB board automatic feeding device

Technical Field

The invention relates to the field of PCB production, in particular to an automatic PCB feeding device.

Background

At present, along with the continuous improvement of science and technology of society, the use of electronic products is continuously increased, and a PCB (printed Circuit Board) is required to be used in the electronic products, and the PCB is also called as a printed circuit board, is a support body of electronic components and is a carrier for the electrical connection of the electronic components.

At present, in the manufacturing process of the PCB, empty boards of the PCB need to be manually placed on a conveying device one by one, and the empty boards of the PCB are sequentially conveyed to an automatic assembly device to be assembled on the empty boards of the PCB, so that the complete PCB is finally obtained.

In view of the above-mentioned related art, the inventor thinks that there is the defect that the empty board of the PCB needs to be manually placed on the conveying device, the feeding efficiency is low, and further the efficiency of processing the PCB is low.

Disclosure of Invention

In order to improve the blank board machining efficiency to the PCB board, this application provides a PCB board automatic feeding device.

The application provides a pair of PCB board automatic feeding device adopts following technical scheme:

an automatic PCB feeding device comprises a pair of conveying rails, wherein the two conveying rails are horizontally arranged oppositely; the conveying device comprises a conveying track, a conveying rack, a rotating plate, a material storage tank, a material inlet, a material outlet, a material inlet end, a material outlet end and a material inlet end, wherein the material inlet end of the conveying track is provided with a mounting frame, the mounting frame is rotatably provided with the rotating plate, the rotating plate is provided with sliding holes at intervals along the circumferential direction, the position of the rotating plate, which is closest to the material inlet end of the conveying track, and the position of the rotating plate, which is farthest from the material inlet end of the conveying track, is a material preparing end; the placing rack is arranged at the position, corresponding to the sliding hole, of the rotary table in a sliding mode towards the vertical direction, and a plurality of limiting slide ways for clamping empty boards of the PCB are arranged on the placing rack at intervals towards the vertical direction; the mounting frame is provided with a driving assembly for driving the placing frame at the feeding end to slide; the mounting bracket is provided with a first driving piece for driving the turntable to rotate and a second driving piece for driving the empty PCB corresponding to the conveying track to slide into the conveying track.

By adopting the technical scheme, an operator firstly sequentially places the empty boards of the PCB in the placing racks corresponding to the material preparation ends, so that the empty boards of the PCB slide into the limiting slide ways; then, starting a first driving piece to drive the turntable to rotate, so that the placing frame rotates to the position of the feeding end; then, the placing rack is driven by the driving assembly to slide from the bottom of the rotary table to the top of the rotary table, and when the PCB moves to the position that the empty plate of the PCB is opposite to the limiting slide way, the empty plate of the PCB is driven by the second driving piece to slide into the conveying track, so that feeding is completed; according to the mode, the mode of automatic feeding is adopted, the manual work is reduced, the feeding efficiency is improved, and the processing efficiency of the PCB is improved.

Preferably, the driving assembly includes: the sliding rail is installed in the rotary table and corresponds to a sliding hole, the screw rod is installed in the sliding rail in a rotating mode, the sliding block is installed on the sliding rail in a sliding mode towards the vertical direction, the placing frame is connected with the sliding block, the sliding block is connected with screw threads, and the third driving piece is used for driving the screw rod to rotate.

Through adopting above-mentioned technical scheme, start the third driving piece, the drive lead screw rotates for the sliding block slides in the track that slides, thereby can drive and place the frame and slide towards vertical direction in the sliding hole, and this mode drive stability is high.

Preferably, the guide block is installed to the sliding block, the sliding track is provided with a guide groove for the sliding of the guide block.

Through adopting above-mentioned technical scheme, through the mutually supporting of guide block and guide way make gliding smooth and easy more and stable of sliding block in the track that slides.

Preferably, the second drive member comprises: the pushing rod is positioned between the feeding end and the material preparing end, the pushing rod is installed on the installation frame in a sliding mode towards the horizontal direction, one end of the pushing rod is opposite to the conveying rail, and the other end of the pushing rod is connected with a piston rod of the driving cylinder; the driving cylinder is mounted on the mounting frame.

Through adopting above-mentioned technical scheme, when the blank board that is located one of them PCB board of rack department of feed end position corresponds delivery track, start and drive actuating cylinder, drive catch bar towards the direction that is close to delivery track and slide, slide in the delivery track until the blank board that promotes the PCB board slides from spacing slide, this simple structure orders about efficiently.

Preferably, the mounting frame is provided with a receiving seat for stacking empty boards of the PCB at a position on one side of the material preparation end of the turntable, the push rod is connected with a connecting rod, the connecting rod is connected with a linkage rod, one end of the linkage rod is rotatably mounted on the connecting rod, and the other end of the linkage rod penetrates through the placing frame at the material preparation end and extends to a position right above the receiving seat; one end of the linkage rod, which is far away from the connecting rod, and one side of the linkage rod, which faces the bearing seat, are provided with suckers for adsorbing empty boards of the PCB positioned at the top of the bearing seat; a fourth driving part for driving the sucker to move towards the vertical direction is arranged in the linkage rod; the connecting rod is provided with a fifth driving piece for driving the linkage rod to rotate.

By adopting the technical scheme, after the empty placing frame is positioned on one side of the top of the turntable, the empty PCB of the stack of PCBs is placed on the bearing seat, and then the fifth driving piece is started to drive the linkage rod to rotate until the sucking disc is right above the topmost one of the empty PCBs of the stack of PCBs; then starting a fourth driving part and an exhaust fan for exhausting air to the sucker to drive the sucker to adsorb the empty board of the PCB; then, the fourth driving part is started to drive the empty PCB of the PCB to move to a limiting slide way which is over against the empty PCB which is not provided with the PCB in the placing rack; when the pushing rod pushes the empty PCB positioned at the feeding end into the conveying track, the empty PCB positioned in the sucking disc is inserted into the limiting slide way positioned at the material preparing end; need not operating personnel and inserts one by one in the spacing track, raise the efficiency.

Preferably, the mounting frame is provided with a first fixing frame at a position right below the material preparing end and glidingly mounted towards the vertical direction, and the first fixing frame abuts against the bottom of the placing frame; the mounting frame is provided with a second fixing frame which is located right below the bearing seat and glidingly arranged towards the vertical direction, and the second fixing frame is abutted against the bottom of the bearing seat; the mounting bracket is provided with a linkage assembly for linking the first fixing frame and the second fixing frame to move towards the vertical opposite direction.

By adopting the technical scheme, when the empty PCB of the PCB is placed on the bearing seat, the second fixing frame is pressed downwards, so that the first fixing frame is driven to move to the bottom of the placing frame abutting against the position of the material preparation end through the action of the linkage assembly; when the rack passes through its vertical downstream of drive assembly drive, can press first mount vertical downstream, rethread linkage subassembly drives second mount vertical upstream, and then drives and accept seat vertical upstream for the whole empty board that folds the PCB board is close to the sucking disc more, reduces the adsorption distance of sucking disc, adsorbs the empty board of PCB board more easily, improves material loading efficiency.

Preferably, the linkage assembly comprises: the first rack and the second rack extend towards the vertical direction, the first rack is connected to the first fixing frame, the second rack is connected to the second fixing frame, the gear is located between the first rack and the second rack, and the gear is meshed with the first rack and the second rack simultaneously.

Through adopting above-mentioned technical scheme, when first mount moves down vertically, drive first rack and move down vertically together, through the effect of gear, drive the vertical rebound of second rack, and then can link the vertical rebound of second mount, and this structural linkage is stable high.

Preferably, a guide frame extending towards the vertical direction is arranged at the top of the bearing seat, and the bearing seat is installed in the guide frame in a sliding manner.

Through adopting above-mentioned technical scheme, will wholly fold the vacant board of PCB board and place back on the socket, when the vacant board of the whole PCB board that folds of socket linkage slides, accessible guide frame leads to the vacant board of the whole PCB board that folds, reduces the condition that the vacant board of the whole PCB board of folding collapses when sliding, improves stability.

Preferably, a connecting frame is erected at a position, located right above the turntable, of the mounting frame, the connecting frame extends from the top of the mounting frame to a position right above the push rod, a sliding barrel is arranged at a position, close to the push rod, of the connecting frame, and the push rod is installed in the sliding barrel in a sliding manner; the driving cylinder is mounted on the sliding barrel.

Through adopting above-mentioned technical scheme, when driving actuating cylinder and starting, can drive the catch bar when sliding, the catch bar slides in a section of thick bamboo that slides to the sliding position that the catch bar appears in the reduction takes place the skew, improves the slip stability of catch bar.

Preferably, one end of the push rod, which faces the conveying track, is provided with a limiting groove for clamping an empty board of the PCB.

Through adopting above-mentioned technical scheme, because the position of catch bar on vertical direction is unchangeable, consequently when the catch bar promoted the blank of PCB board, the blank of PCB board can be blocked into the spacing inslot for the blank of PCB board is slided away from spacing slide, and enters into track for the in-process more stable and accurate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. firstly, sequentially placing the empty boards of the PCB in a placing rack corresponding to the material preparation end by an operator, and enabling the empty boards of the PCB to slide into a limiting slideway; then, starting a first driving piece to drive the turntable to rotate, so that the placing frame rotates to the position of the feeding end; then, the placing rack is driven by the driving assembly to slide from the bottom of the rotary table to the top of the rotary table, and when the PCB moves to the position that the empty plate of the PCB is opposite to the limiting slide way, the empty plate of the PCB is driven by the second driving piece to slide into the conveying track, so that feeding is completed; according to the mode, the manual use is reduced through an automatic feeding mode, the feeding efficiency is improved, and the processing efficiency of the PCB empty board is further improved;

2. when the pushing rod pushes the empty PCB positioned at the feeding end into the conveying track, the empty PCB positioned in the sucking disc is inserted into the limiting slide way positioned at the material preparing end; operators do not need to be inserted into the limiting rails one by one, and the efficiency is improved;

3. when the empty PCB of the PCB is placed on the bearing seat, the second fixing frame is pressed downwards, so that the first fixing frame is driven to move to abut against the bottom of the placing frame at the position of the material preparation end through the action of the linkage assembly; when the rack passes through its vertical downstream of drive assembly drive, can press first mount vertical downstream, rethread linkage subassembly drives second mount vertical upstream, and then drives and accept seat vertical upstream for the whole empty board that folds the PCB board is close to the sucking disc more, reduces the adsorption distance of sucking disc, adsorbs the empty board of PCB board more easily, improves material loading efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a schematic view of another perspective of the overall structure of the present application.

Fig. 3 is a schematic structural diagram of a driving assembly of the present application.

Fig. 4 is a schematic view of the matching structure of the connecting rod and the linkage rod of the present application.

Fig. 5 is a sectional view of the matching structure of the stock end and the bearing seat of the present application.

Description of reference numerals:

1. a conveying track; 2. a mounting frame; 21. a first driving member; 22. a connecting frame; 23. a sliding barrel; 24. a push rod; 241. a limiting groove; 25. a driving cylinder; 26. an assembly frame; 261. a guide frame; 262. a first fixing frame; 263. a second fixing frame; 264. a first rack; 265. a second rack; 266. a gear; 27. a bearing seat; 28. a connecting rod; 281. a fifth driving member; 29. a linkage rod; 291. a suction cup; 292. a fourth drive; 3. a turntable; 31. a sliding hole; 32. fixing grooves; 33. a feeding end; 34. preparing a material end; 4. placing a rack; 41. a limiting slide way; 5. a drive assembly; 51. a sliding track; 52. a screw rod; 53. a sliding block; 54. a third driving member; 101. the PCB board is empty.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses PCB board automatic feeding device. Referring to fig. 1 and 2, the automatic PCB loading device includes a pair of symmetrically disposed conveying rails 1, two conveying rails 1 are disposed at intervals in a horizontal direction, and tops of the two conveying rails 1 are located on the same horizontal plane; the PCB automatic feeding device also comprises a mounting rack 2 and a turntable 3, wherein the mounting rack 2 is arranged at one side of the feed inlets of the two conveying tracks 1; carousel 3 is the level setting, and 3 rotary types of carousel are installed at mounting bracket 2, and mounting bracket 2 is provided with first driving piece 21, and first driving piece 21 is the motor, and first driving piece 21 fixed mounting is at mounting bracket 2, the pivot fixed connection of first driving piece 21 output shaft and carousel 3 to can drive carousel 3 and rotate.

Four sliding holes 31 are circumferentially and equally spaced at the position, close to the edge, of the rotary table 3, a placing frame 4 is arranged in each sliding hole 31, the placing frame 4 slides towards the vertical direction, and the rotary table 3 is provided with a driving assembly 5 for driving the placing frame 4 to slide; a plurality of pairs of limiting slide ways 41 are arranged in each placing frame 4, the limiting slide ways 41 are arranged at equal intervals in the vertical direction, the two limiting slide ways 41 in each pair are relatively and fixedly arranged on the inner side wall of the placing frame 4 on the same level, and an empty board 101 of one PCB is clamped between the two limiting slide ways 41 in each pair; the position of the feed port of the turntable 3 closest to the conveying track 1 is a feed end 33, the position of the feed port farthest from the conveying track 1 is a material preparation end 34, and the mounting frame 2 is provided with a second driving piece for driving the empty PCB 101 corresponding to the conveying track 1 to slide into the conveying track 1; therefore, when the placing frame 4 filled with the empty PCB 101 is moved to the position of the feeding end 33, the empty PCB 101 can be sequentially slid into the conveying track 1 through the second driving piece in the process that the driving assembly 5 drives the placing frame 4 to move, and the use of manpower is reduced.

Referring to fig. 2 and 3, the opposite side walls of the rotary table 3 in each sliding hole 31 are respectively provided with a fixing groove 32, each fixing groove 32 is internally provided with a driving assembly 5, each driving assembly 5 comprises a sliding rail 51, a screw rod 52, a sliding block 53 and a third driving piece 54, the sliding rail 51 is fixedly installed in the fixing groove 32, the sliding rail 51 extends towards the vertical direction, the screw rod 52 extends towards the direction parallel to the sliding rail 51, and two ends of the screw rod 52 are rotatably installed on the sliding rail 51; the side wall of the sliding block 53 is fixedly provided with a guide block, a guide groove parallel to the screw rod 52 is formed in the sliding rail 51, and the guide block is arranged in the guide groove in a sliding manner, so that the sliding block 53 is stably arranged in the sliding rail 51 in a sliding manner; the sliding block 53 is arranged on the screw rod 52 in a threaded manner, and the placing frame 4 is fixedly connected with the sliding block 53 positioned in the same sliding hole 31; the third driving member 54 is a motor, the third driving member 54 is fixedly installed on the sliding rail 51, and an output shaft of the third driving member 54 is fixedly connected with an end portion of the screw rod 52, so that the placing rack 4 can be driven to move towards the vertical direction.

Referring to fig. 2 and 4, a connecting frame 22 is fixedly installed at the top of the mounting frame 2 and right above the rotary table 3, a sliding cylinder 23 is fixedly installed at the position of the connecting frame 22 right above the middle of the rotary table 3, a second driving member is installed on the sliding cylinder 23, the second driving member includes a push rod 24 and a driving cylinder 25, the push rod 24 is located between the feed end 33 and the material preparation end 34, the push rod 24 is horizontally arranged and is installed in the sliding cylinder 23 in a sliding manner, a limiting groove 241 is formed in one end of the push rod 24 close to the feed end 33, the limiting groove 241 extends in the horizontal direction, and the width of the limiting groove 241 is consistent with the thickness of an empty board 101 of a PCB board; the driving cylinder 25 is fixedly installed on the outer side wall of the sliding barrel 23, a piston rod of the driving cylinder 25 extends and retracts in the horizontal direction, and the piston rod of the driving cylinder 25 is fixedly connected with the push rod 24, so that the push rod 24 can be driven to slide, and the empty board 101 of the PCB in the placing frame 4 at the feeding end 33 is pushed away from the placing frame 4.

Referring to fig. 4 and 5, the mounting bracket 2 is provided with an assembly jig 26 at one side of the horizontal direction and close to the material preparation end 34, the assembly jig 26 is provided with a guide frame 261, the guide frame 261 is four angle irons, one ends of the four angle irons are fixedly installed at the assembly jig 26, the other ends of the four angle irons extend upwards in the vertical direction, the four angle irons are enclosed into a rectangular shape, the bearing seat 27 is installed at a position between the four angle irons in the vertical direction in a sliding manner, the bearing seat 27 is horizontally arranged, and the empty boards 101 of the PCB boards are stacked on the bearing seat 27, so that when the bearing seat 27 slides, the situation that the empty boards 101 of the entire stacked PCB boards are inclined can be reduced.

A connecting rod 28 is mounted at one end of the pushing rod 24, which is far away from the limiting groove 241, the connecting rod 28 extends in a direction parallel to the pushing rod 24, one end of the connecting rod 28 is fixedly mounted at the pushing rod 24, the other end of the connecting rod 28 extends in a direction close to the material preparing end 34, one end of the connecting rod 28, which is far away from the pushing rod 24, is rotatably mounted with a linkage rod 29, a rotating shaft of the linkage rod 29 extends in a horizontal direction, and the linkage rod 29, which is far away from the connecting rod 28, penetrates through the placing frame 4 at the material preparing end 34 and extends to a position right above the bearing seat 27; the connecting rod 28 is provided with the fifth driving piece 281, and the fifth driving piece 281 is the motor, and fifth driving piece 281 fixed mounting is at connecting rod 28, and the output shaft fixed mounting of fifth driving piece 281 is in the pivot of gangbar 29 to can drive gangbar 29 and rotate from rack 4, reduce the interference to carousel 3 pivoted.

A suction cup 291 is arranged at one end of the linkage rod 29, which is far away from the connecting rod 28 and faces one side of the bearing seat 27, the suction cup 291 is horizontally arranged, a fourth driving part 292 is installed on the linkage rod 29, the fourth driving part 292 is an air cylinder, the fourth driving part 292 is fixedly installed in the linkage rod 29, and a piston rod of the fourth driving part 292 is fixedly connected with the suction cup 291, so that the suction cup 291 can be driven to move in the vertical direction to suck an empty board 101 of a PCB (printed circuit board) at the topmost part of the bearing seat 27; and when the pushing rod 24 pushes the empty board 101 of the PCB away from the placing rack 4 in the feeding end 33, the adsorbed empty board 101 of the PCB can be driven to slide into the placing rack 4 in the feeding end 33, and feeding is completed.

Referring to fig. 4 and 5, a first fixing frame 262 is mounted on the assembly frame 26 at a position right below the material preparation end 34, a second fixing frame 263 is mounted on the assembly frame 26 at a position right below the bearing seat 27, the first fixing frame 262 and the second fixing frame 263 are respectively provided with a linkage assembly, the linkage assembly comprises a first rack 264, a second rack 265 and a gear 266, one end of the first fixing frame 262 abuts against the bottom of the placing frame 4 at the material preparation end 34, the other end of the first fixing frame 262 is fixedly connected with the first rack 264, and the first rack 264 extends in the vertical direction; one end of the second fixed frame 263 is fixedly installed at the bottom of the bearing seat 27, and the other end is fixedly connected with the second rack 265, and the second rack 265 extends towards the vertical direction; the gear 266 is rotatably installed on the mounting frame 26 and located between the first rack 264 and the second rack 265, and the gear 266 is engaged with the first rack 264 and the second rack 265 simultaneously, so as to drive the receiving seat 27 to move in the opposite direction when the placing frame 4 located at the material preparing end 34 slides in the vertical direction; when the empty board 101 of the PCB board is loaded into the placing frame 4, the placing frame 4 gradually moves downwards vertically, and the bearing seat 27 which gradually reduces the empty board 101 of the PCB board is driven to move upwards vertically, so that the sucking disc 291 can more conveniently adsorb the empty board 101 of the PCB board.

The implementation principle of the automatic PCB feeding device in the embodiment of the application is as follows: when the empty board 101 of the PCB board is mounted on the placing rack 4 at the feeding end 33 and the placing rack 4 at the material preparing end 34 is empty, the third driving member 54 is started to drive the screw 52 to rotate, so that the placing rack 4 at the feeding end 33 is driven to move vertically upwards until the limiting groove 241 is opposite to the empty board 101 of the PCB board at the topmost part of the placing rack 4.

Placing the empty board 101 of the whole stack of PCB boards on the bearing seat 27, then starting the fifth driving member 281 to rotate until the suction cup 291 is located right above the empty board 101 of the whole stack of PCB boards, and then starting the fourth driving member 292 to drive the suction cup 291 to face the empty board 101 of the topmost PCB board for absorbing; then, the empty board 101 of the adsorbed PCB is driven to move to the position of the limiting slide rail 41 opposite to the bottommost position in the placing rack 4 at the material preparing end 34.

The driving air cylinder 25 is started, the pushing rod 24 is driven to slide, so that the pushing rod 24 pushes the empty PCB 101 into the conveying track 1, and meanwhile, the adsorbed empty PCB 101 is driven to move into the limiting slide rail 41 at the bottommost position in the placing rack 4; and then the loading of the empty boards 101 of the PCB boards in the placing rack 4 is finished one by one.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The automatic PCB feeding device is characterized by comprising a pair of conveying rails (1), wherein the two conveying rails (1) are horizontally arranged oppositely; an installation frame (2) is arranged on one side of a feeding hole of the conveying track (1), a rotary table (3) is rotatably installed on the installation frame (2), sliding holes (31) are formed in the rotary table (3) at intervals along the circumferential direction, the position, closest to the feeding hole of the conveying track (1), of the rotary table (3) is a feeding end (33), and the position, farthest from the feeding hole of the conveying track (1), of the rotary table (3) is a material preparing end (34); the rotary table (3) is provided with a placing rack (4) in a sliding manner towards the vertical direction at the position corresponding to the sliding hole (31), and the placing rack (4) is provided with a plurality of limiting slide ways (41) for clamping empty boards (101) of the PCB at intervals towards the vertical direction; the mounting rack (2) is provided with a driving assembly (5) for driving the placing rack (4) at the feeding end (33) to slide; the mounting rack (2) is provided with a first driving piece (21) for driving the turntable (3) to rotate and a second driving piece for driving the empty board (101) of the PCB corresponding to the conveying track (1) to slide into the conveying track (1).

2. An automatic PCB feeding device according to claim 1, wherein the driving assembly (5) comprises: track (51), lead screw (52), sliding block (53) and third driving piece (54) slide, the track (51) that slides is installed in carousel (3) and corresponding hole (31) that slides, lead screw (52) rotary type is installed at the track (51) that slides, sliding block (53) are installed at the track (51) that slides towards vertical direction sliding, rack (4) are connected with sliding block (53), sliding block (53) and lead screw (52) threaded connection, third driving piece (54) are used for driving lead screw (52) to rotate.

3. The automatic PCB feeding device according to claim 2, wherein the sliding block (53) is provided with a guide block, and the sliding rail (51) is provided with a guide groove for the guide block to slide.

4. The automatic PCB feeding device of claim 1, wherein the second driving member comprises: the device comprises a push rod (24) and a driving cylinder (25), wherein the push rod (24) is positioned between a feeding end (33) and a material preparing end (34), the push rod (24) is installed on an installation frame (2) in a sliding manner towards the horizontal direction, one end of the push rod (24) is over against a conveying track (1), and the other end of the push rod is connected with a piston rod of the driving cylinder (25); the driving cylinder (25) is mounted on the mounting frame (2).

5. The automatic PCB feeding device according to claim 4, wherein a bearing seat (27) for stacking empty boards (101) of PCBs is arranged at one side of the equipment material end (34) of the turntable (3) of the mounting frame (2), the pushing rod (24) is connected with a connecting rod (28), the connecting rod (28) is connected with a linkage rod (29), one end of the linkage rod (29) is rotatably mounted on the connecting rod (28), and the other end of the linkage rod (29) penetrates through the placing frame (4) of the equipment material end (34) and extends to a position right above the bearing seat (27); a sucker (291) for sucking a hollow board (101) of the PCB positioned at the topmost part of the bearing seat (27) is arranged at one end of the linkage rod (29) away from the connecting rod (28) and at one side facing the bearing seat (27); a fourth driving part (292) for driving the sucker (291) to move towards the vertical direction is arranged in the linkage rod (29); the connecting rod (28) is provided with a fifth driving piece (281) for driving the linkage rod (29) to rotate.

6. An automatic PCB feeding device as claimed in claim 5, wherein the mounting rack (2) is provided with a first fixing rack (262) at a position right below the material preparing end (34) and in a sliding manner towards the vertical direction, and the first fixing rack (262) abuts against the bottom of the placing rack (4); the mounting rack (2) is provided with a second fixing rack (263) which is located right below the bearing seat (27) and glidingly mounted towards the vertical direction, and the second fixing rack (263) abuts against the bottom of the bearing seat (27); the mounting rack (2) is provided with a linkage assembly for linking the first fixing rack (262) and the second fixing rack (263) to move towards vertical opposite directions.

7. The automatic PCB feeding device of claim 6, wherein the linkage assembly comprises: the gear rack comprises a first rack (264), a second rack (265) and a gear (266), wherein the first rack (264) and the second rack (265) extend towards the vertical direction, the first rack (264) is connected to the first fixing frame (262), the second rack (265) is connected to the second fixing frame (263), the gear (266) is located at a position between the first rack (264) and the second rack (265), and the gear (266) is meshed with the first rack (264) and the second rack (265) at the same time.

8. An automatic PCB feeding device as claimed in claim 5, wherein the top of the socket (27) is provided with a guide frame (261) extending towards the vertical direction, and the socket (27) is slidably mounted in the guide frame (261).

9. The automatic PCB feeding device according to claim 4, wherein a connecting frame (22) is erected on the mounting frame (2) at a position right above the turntable (3), the connecting frame (22) extends from the top of the mounting frame (2) to a position right above the pushing rod (24), a sliding barrel (23) is arranged on the connecting frame (22) at a position close to the pushing rod (24), and the pushing rod (24) is slidably mounted in the sliding barrel (23); the driving cylinder (25) is mounted on the sliding barrel (23).

10. The automatic PCB feeding device according to claim 4, wherein one end of the pushing rod (24) opposite to the conveying track (1) is provided with a limiting groove (241) for clamping an empty board (101) of the PCB.