CN110963281B

CN110963281B - PCB board automatic feeding is with sending trigger

Info

Publication number: CN110963281B
Application number: CN201911144008.4A
Authority: CN
Inventors: 陈国藩
Original assignee: Chongqing Qier Electronic Technology Co ltd
Current assignee: Chongqing Qier Electronic Technology Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2022-05-31
Anticipated expiration: 2039-11-20
Also published as: CN110963281A

Abstract

The invention discloses a PCB conveying machine for automatic feeding of PCBs, which comprises an automatic conveying frame and a feeding frame detachably mounted on the automatic conveying frame, wherein the automatic conveying frame comprises a conveying frame bottom plate which is rectangular integrally, vertically arranged conveying support frames are symmetrically arranged at two ends of the conveying frame bottom plate in the length direction, a horizontally arranged conveying supporting plate is further arranged on the conveying frame bottom plate, a vertically arranged conveying lifting device is mounted on each conveying support frame, and two ends of each conveying supporting plate are connected with the conveying lifting device; one side of the two conveying support frames in the width direction is also connected with a support connecting rod, and the support connecting rod is positioned at the top of the conveying support frame; the support connecting rod is also provided with a horizontally arranged conveying and pushing device, and the conveying and pushing device is provided with an expansion piece which can be telescopically arranged towards the other side along the width direction of the conveying rack bottom plate. The automatic feeding device has the advantages of ingenious structural design, capability of automatically feeding PCB plates, contribution to reducing labor intensity and labor cost, improvement of production efficiency and the like.

Description

PCB board automatic feeding is with sending trigger

Technical Field

The invention relates to the technical field of auxiliary equipment for manufacturing a PCB (printed circuit board), in particular to a board conveying machine for automatically feeding a PCB.

Background

The PCB, i.e., a printed circuit board, is also called a PCB, and is responsible for providing a wiring circuit for electrical connection of electronic components. The manufacturing process of the PCB comprises a plurality of processes, and the two processes involve the condition that the PCB needs to be flowed or placed statically. When the welding of the electrical elements is carried out, the welding is usually completed by adopting automatic welding equipment, a worker puts a PCB on, feeds and conveys the PCB to the automatic welding equipment, and the PCB is conveyed into the automatic welding equipment through a conveying belt to complete the automatic placement and welding of the electrical elements. However, since the electrical components on the PCB need to be soldered in different automatic soldering lines in batches, and a worker is arranged in front of each automatic soldering line for feeding, the labor cost and the labor intensity of the worker are increased.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a structural design is ingenious, can accomplish the autoloading of PCB sheet material automatically, is favorable to reducing intensity of labour and human cost, improves production efficiency's PCB board machine that send for automatic feeding.

In order to solve the technical problems, the invention adopts the following technical scheme:

the PCB conveying machine for automatic feeding of the PCB is characterized by comprising an automatic conveying frame and a feeding frame detachably mounted on the automatic conveying frame, wherein the automatic conveying frame comprises a conveying frame bottom plate which is rectangular integrally, vertically-arranged conveying support frames are symmetrically arranged at two ends of the conveying frame bottom plate in the length direction, a horizontally-arranged conveying supporting plate is further arranged on the conveying frame bottom plate, a vertically-arranged conveying lifting device is mounted on the conveying support frames, and two ends of each conveying supporting plate are connected with the conveying lifting device and can be lifted horizontally under the action of the conveying lifting device; one side of each of the two conveying support frames in the width direction is also provided with a support connecting rod in a connecting manner, and the support connecting rods are positioned at the tops of the conveying support frames; the support connecting rod is also provided with a horizontally arranged conveying and pushing device, and the conveying and pushing device is provided with a telescopic piece which can be telescopically arranged towards the other side along the width direction of the conveying frame bottom plate; the feeding frame comprises a bottom plate assembly and a back plate assembly which are vertically opposite to each other, plate grooves which are horizontally penetrated and arranged are vertically and uniformly distributed on one side, opposite to the bottom plate assembly and the back plate assembly, of the bottom plate assembly, and the plate grooves on the bottom plate assembly and the back plate assembly are arranged opposite to each other one by one; the distance between the bottom plate assembly and the back plate assembly is matched with the width of the PCB.

Because the feeding frame is detachably arranged on the automatic conveying frame, a standby feeding frame can be used to complete the loading of the PCB in advance, and then continuous feeding requirements are realized through the integral replacement of the feeding frame. Through the board groove that is just right on bottom plate subassembly and the backplate subassembly one by one, just can be with the horizontal bearing of PCB board layering, recycle the propelling movement of extensible member and carry elevating gear's promotion, just can accomplish the automatic feeding of PCB board. This structural design is ingenious, can accomplish the autoloading of PCB sheet material automatically, is favorable to reducing intensity of labour and human cost, improves production efficiency.

Furthermore, the conveying and pushing device is a conveying and pushing cylinder which is horizontally arranged, and the conveying and pushing cylinder is positioned in the middle of the support connecting rod.

Because the two sides of the PCB are respectively positioned in the board grooves, the board grooves have a guiding effect on the PCB, and the PCB can be reliably fed by only using one conveying and pushing cylinder.

Furthermore, the conveying supporting plate is provided with two clamping guide rails arranged along the length direction and two clamping plates arranged along the width direction, and the two clamping plates are slidably mounted above the clamping guide rails through sliding blocks and symmetrically arranged along the length direction of the clamping guide rails; and a locking mechanism for locking the relative positions of the clamping plate and the conveying supporting plate is also arranged between the clamping plate and the conveying supporting plate.

Therefore, the two clamping plates symmetrically arranged on the clamping guide rail can clamp the bottom plate assembly and the back plate assembly from two sides of the feeding frame, the relative position between the clamping plates and the conveying supporting plate is locked through the locking mechanism, the feeding frame is reliably fixed on the conveying supporting plate, and stable and reliable plate conveying is facilitated.

Furthermore, two clamping guide rails are arranged side by side along the width direction of the conveying supporting plate, and the locking mechanism is located in the middle of the clamping plate.

In this way, the displacement and clamping of the clamping plate can be made more stable by the two clamping rails.

Furthermore, the locking mechanism comprises locking teeth uniformly distributed along the length direction of the conveying supporting plate and locking bolts vertically installed on the clamping plate, and the lower ends of the locking bolts are provided with pointed ends matched with the locking teeth; the locking bolt is arranged on the clamping plate through a bolt seat, a bolt hole matched with the locking bolt is formed in the bolt seat, and the locking bolt is arranged in the bolt hole in a vertically movable mode.

Further, the conveying lifting device comprises two conveying lifting guide rods vertically arranged on the conveying support frame, and the two conveying lifting guide rods are symmetrically arranged on two sides of the conveying support frame in the width direction; a rotatable conveying lifting screw rod is also vertically arranged in the middle of the conveying support frame, the upper end of the conveying lifting screw rod is connected with a coaxially arranged conveying lifting motor, and the conveying lifting motor is arranged on the conveying support frame; the conveying supporting plate is provided with a guide sleeve matched with the conveying lifting guide rod and a conveying lifting screw nut matched with the conveying lifting screw.

Like this, utilize the transport elevator motor on two transport support frames to drive simultaneously and carry the elevating screw to rotate, drive the elevating movement that realizes carrying the layer board of installing the transport elevating screw nut on carrying the layer board, because carry elevating screw and carry the cooperation of elevating screw nut to have the auto-lock characteristic, can realize that whole transport elevating gear's start at any time stops, the operation is more swift reliable.

Furthermore, two sides of the bottom plate component in the length direction are provided with symmetrically arranged side frames, each side frame comprises a cross beam arranged in parallel with the bottom plate component, and the cross beams are arranged on the bottom plate component through vertically arranged upright posts; two still have the sharp guiding mechanism who sets up along length direction on the crossbeam, the both sides of backplate subassembly through the pivot with sharp guiding mechanism rotationally connects, the backplate subassembly is kept away from the one end detachably of pivot is installed on the crossbeam, and this end with the distance of pivot is less than or equal to the length of stand makes the pivot of backplate subassembly is followed sharp guiding mechanism removes the back towards this end, can rotate the backplate subassembly downwards make it with the bottom plate subassembly is in mutually perpendicular state.

Therefore, the back plate assembly rotates to be in a mutually vertical state with the bottom plate assembly through the rotating shaft to form an L-shaped structure, and the PCB can be vertically clamped into the plate grooves of the bottom plate assembly and the back plate assembly for standing and supporting the PCB. Therefore, the PCB can be placed still or circulated in a state of being converted into the PCB bracket, and when the PCB is conveyed to the feeding device of the next procedure, the PCB does not need to be taken out again, the back plate support is directly rotated to a state parallel to the bottom plate assembly and fixed on the cross beam, and the back plate support is deformed into a PCB feeding frame, so that manpower and material resources can be reduced, the working efficiency is improved, and the risk of scraping and damaging the PCB is also reduced.

Further, the bottom plate assembly comprises a rectangular bottom plate bracket and a bottom plate support arranged on the bottom plate bracket; the back plate assembly comprises a rectangular back plate bracket and a back plate support arranged on the back plate bracket; the plate grooves are formed in the bottom plate support and the back plate support.

Further, the backplate support deviates from stainless steel flat mouth hasp is still installed to one side that the backplate board held in the palm, stainless steel flat mouth hasp sets up symmetrically the both sides of backplate support width direction are close to on the stand of backplate support with all have on the bracket crossbeam with the hasp board that stainless steel flat mouth hasp matched with sets up colludes.

Therefore, no matter the back plate support is in a vertical state or a horizontal state, the back plate support can be fixed through the cooperation of the stainless steel flat nozzle hasp and the hasp plate hook.

Further, the linear guide mechanism comprises linear guide grooves arranged along the length direction of the bracket cross beams, and the linear guide grooves are positioned on one opposite sides of the two bracket cross beams; the diameter of the rotating shaft is matched with the width of the linear guide groove, and the rotating shaft is rotatably and movably matched in the linear guide groove.

Furthermore, the linear guide mechanism comprises guide plates arranged on the inner sides of the two bracket beams, and the linear guide grooves are positioned in the middle of the guide plates and penetrate through the guide plates in the thickness direction; one side of the guide plate facing the bracket beam is provided with a guide groove formed along the edge of the linear guide groove in a concave mode; the end part of the rotating shaft is provided with an annular convex rib which is formed by protruding along the radial direction, and the thickness of the annular convex rib is smaller than the depth of the guide groove; the rotating shaft is installed on the back plate bracket through a coaxial bolt.

During assembly, one end of the rotating shaft penetrates through the linear guide groove of the guide plate and is fixed on the back plate support through the bolt, then the guide plate is installed on the bracket cross beam, the annular convex edge on the rotating shaft can be limited between the guide plate and the bracket cross beam, and when the guide plate guides the rotating shaft of the back plate support, the distance between the two guide plates or the bracket cross beam is adjusted by utilizing the lengths of the end parts of the two rotating shafts.

In conclusion, the automatic feeding device has the advantages of being ingenious in structural design, capable of automatically feeding PCB plates, beneficial to reducing labor intensity and labor cost, capable of improving production efficiency and the like.

Drawings

Fig. 1 is a schematic view of the structure of a running rack.

Fig. 2 is a schematic structural view of the bracket.

Fig. 3 is a schematic structural view of an automatic transfer rack.

Fig. 4 is an enlarged schematic view of the circle in fig. 3.

Fig. 5 is a schematic structural diagram of a state that the back plate assembly of the bracket is rotated to form a loading frame.

Fig. 6 is an enlarged schematic view of the circle in fig. 5.

Detailed Description

The present invention will be described in further detail with reference to examples.

In the specific implementation: as shown in fig. 1 to 6, a PCB production logistics system comprises a running shelf for running PCBs and a board conveyor for automatically feeding PCBs, as shown in fig. 1 and 2, the running shelf comprises a shelf main body 2 and a bracket 1 for vertically inserting and placing PCBs, the bracket 1 comprises a bottom board assembly 11 and a back board assembly 12 which are integrally L-shaped and vertically arranged, and the bottom board assembly 11 comprises a rectangular bottom board bracket 111 and a bottom board bracket 112 arranged on the bottom board bracket 111; the back plate assembly 12 comprises a rectangular back plate support 121 and a back plate support 122 arranged on the back plate support 111, wherein plate grooves penetrating along the width direction are equidistantly arranged on the bottom plate support 112 and the back plate support 122 along the length direction, and the plate grooves on the bottom plate support 112 and the plate grooves on the back plate support 122 are arranged in a one-to-one correspondence manner; the shelf main body 2 comprises a shelf beam 21 which is horizontally arranged, and a shelf hook groove is formed in the upper surface of the shelf beam 21 along the length direction; the bracket 1 is provided with a bracket hook 14 for hooking the shelf hook groove, and the bracket hook 14 is positioned on one side of the back plate support 121 departing from the back plate support 122; the bracket 1 is detachably hung in a shelf hook groove of the shelf beam 21 through the bracket hook 14; the bottom of the shelf body 2 is provided with universal wheels 22 which are uniformly distributed.

By adopting the structure, the printed circuit board can be vertically inserted into the board grooves on the bottom board support and the back board support, the placement of the printed circuit board is realized, and the interval between the board grooves is fixed, so that the adjacent printed circuit boards can be prevented from being damaged by mutual scraping in the operation process. In addition, because the bracket is hooked in the goods shelf hook groove of the cross beam through the bracket hook, the cross beam is of a long-strip structure generally, namely the bracket can be hooked on both sides of the cross beam, so that two rows of brackets can be hooked by one cross beam, the whole gravity center of the two rows of brackets can be ensured to be close to the position of the cross beam, and the whole result is more stable. And the bracket can be taken off from the operation goods shelves when placing printed circuit board, can reduce the occupation of land space of goods shelves main part promptly, is convenient for place, can let the bracket on vacant goods shelves main part operation other stations again, improves goods shelves main part's transfer utilization ratio.

During implementation, the shelf main body 2 further comprises a shelf joist 23 parallel to the shelf beam 21, the shelf joist 23 is located below the shelf beam 21, and the distance between the shelf beam 21 and the shelf joist 23 is smaller than the distance between the bracket hook 14 and the bottom.

Therefore, when the bracket hook is hooked in the rack hook groove of the rack beam, the lower part of the bracket can be abutted against the rack joist, and even if the bracket is hooked on one side of the rack beam, the bracket cannot be overturned, so that the printed circuit board is prevented from falling off from the bracket.

In practice, the pallet joists 23 are positioned on one side of the pallet cross beam 21 in the width direction, so that the bottom of the bracket 1 hooked on the pallet cross beam 21 is inclined upward.

Therefore, the printed circuit board can be further prevented from sliding from the board groove of the bracket, and the stability of operation is improved.

In implementation, the shelf body 2 comprises a horizontally arranged i-shaped bottom frame 24, and the universal wheels 22 are installed at four corners of the bottom frame 24; the middle parts of the two ends of the bottom frame 24 are provided with vertical shelf longitudinal beams 25, and the two ends of the shelf cross beam 21 and the shelf joists 23 are respectively arranged on the two shelf longitudinal beams 25.

By adopting the structure, the structure of the goods shelf main body is very simple, and the occupied area can be reduced while the stable operation function is realized.

In practice, the shelf cross beams 21 and the shelf joists 23 are provided in multiple sets in the height direction of the shelf longitudinal beams 25.

In practice, the two sides of the bottom plate bracket 111 in the length direction are provided with symmetrically arranged side frames 13, the side frames 13 comprise bracket beams 131 arranged in parallel with the bottom plate bracket 111, and the bracket beams 131 are installed on the bottom plate bracket 111 through vertically arranged upright posts 132.

Therefore, due to the fact that the side frames are arranged on the two sides of the bracket, when the bracket is placed on a transfer trolley to be carried, the phenomenon that the adjacent brackets collide with each other to damage a PCB can be avoided. In addition, the bracket cross beam is arranged on the side frame, so that the bracket is convenient to grasp and operate when being transported again.

In practice, a bracket longitudinal beam 133 is vertically connected between the two bracket cross beams 131, and the bracket longitudinal beam 133 is located at the end position of the bracket cross beam 131 close to the backboard assembly 12.

Therefore, the strength and the stability between the two bracket cross beams can be improved through the bracket longitudinal beams, and the bending deformation of the two side frames is avoided. Meanwhile, the bracket longitudinal beam is arranged at the end part of the bracket beam close to the back plate assembly, so that the bottom plate assembly, the back plate assembly and the two side frames can be guaranteed to form a fully-open object placing space, and the placement of a PCB is facilitated.

In practice, the back plate bracket 121 is connected to the two side frames 3.

Therefore, the base plate assembly, the back plate assembly and the side frames can form a more stable frame structure, the strength of the whole bracket is increased, and the service life of the bracket is prolonged.

During implementation, the height of the upright post 132 is consistent with the vertical height of the PCB, two linear guide mechanisms are further arranged on the bracket beam 131 along the length direction, two sides of the back plate support 121 are rotatably connected with the linear guide mechanisms through a rotating shaft 123, and the lower end of the back plate support 121 is detachably and vertically lapped on the end of the bottom plate assembly 11, so that the back plate support 121 can rotate around the rotating shaft 123 to be in a horizontal state and can move to the position right above the bottom plate assembly 11 through the linear guide mechanisms.

Because the PCB needs to be welded for many times in the manufacturing process of the PCB, the welding of the electrical components is generally carried out by adopting automatic equipment, and the PCB is conveyed into the welding equipment through a conveying belt. The PCB board of circulation usually need place one by one the ground level once more put into sheet material loading frame, and the automatic feeding device of being convenient for is with PCB board propelling movement in proper order to the conveyer belt of subsequent handling, and a large amount of manpower and materials are wasted to such secondary material loading, influence efficiency. By adopting the structure, after the PCB is transferred to the next station through the bracket, the back plate bracket can be upwards rotated around the rotating shaft, then the PCB is moved to the position right above the bottom plate component through the linear guide mechanism, so that the back plate component and the bottom plate component are arranged opposite to each other, when the back plate bracket is rotated, the bottom of the PCB on the bracket is continuously supported on the bottom plate bracket, after the back plate assembly is rotated to be right above the bottom plate assembly, the bottom and the top of the PCB are respectively positioned in the plate grooves of the bottom plate support and the back plate support, at the moment, the bracket is integrally arranged at the side, so that the PCB is in a horizontal state, the bracket is transformed into a plate material feeding frame of the PCB, with the cooperation of automatic feeding device, just can realize the automatic feeding of PCB sheet material, need not to take out the PCB board from the bracket once more, the operation is more convenient, has avoided the damage of secondary feeding to the component on the PCB board simultaneously.

During implementation, the backplate support 121 deviates from one side of the backplate support 122 is also provided with stainless steel flat mouth hasps (not shown in the figure), the stainless steel flat mouth hasps are symmetrically arranged on two sides of the width direction of the backplate support 121, and are close to the upright post of the backplate support 121 and the bracket beam 131 are provided with buckle plates (not shown in the figure) matched with the stainless steel flat mouth hasps.

In implementation, the linear guide mechanism includes linear guide grooves arranged along the length direction of the bracket beams 131, and the linear guide grooves are located at opposite sides of the two bracket beams 131; the diameter of the rotation shaft 123 matches the width of the linear guide groove and is rotatably and movably fitted in the linear guide groove.

In implementation, the linear guide mechanism comprises guide plates arranged on the inner sides of the two bracket beams 131, and the linear guide grooves are positioned in the middle of the guide plates and are arranged in a penetrating manner along the thickness direction of the guide plates; a guide groove concavely formed along an edge of the linear guide groove is formed on one side of the guide plate facing the bracket beam 131; the end of the rotating shaft 123 is provided with an annular rib formed by protruding in the radial direction, and the thickness of the annular rib is smaller than the depth of the guide groove; the rotating shaft 123 is mounted on the back plate bracket 121 through a coaxial bolt.

Turning the back plate assembly 12 over to a position opposite the base plate assembly, as shown in fig. 5 and 6, the carrier can be deformed into a loading bay. In the automatic feeding stage of the PCB, the board conveying machine is adopted as follows.

The plate conveying machine comprises an automatic conveying frame 3, as shown in fig. 3 and 4, the automatic conveying frame 3 comprises a conveying frame bottom plate 31 which is rectangular as a whole, vertically-arranged conveying support frames 32 are symmetrically arranged at two ends of the conveying frame bottom plate 31 in the length direction, a horizontally-arranged conveying supporting plate 33 is further arranged on the conveying frame bottom plate 31, a vertically-arranged conveying lifting device is mounted on the conveying support frame 32, and two ends of the conveying supporting plate 33 are connected with the conveying lifting device and can be horizontally lifted under the action of the conveying lifting device; a support connecting rod 34 is further connected to one side of each of the two conveying support frames 32 in the width direction, and the support connecting rod 34 is located at the top of the conveying support frame 32; the support connecting rod 34 is further provided with a horizontally arranged conveying and pushing device 35, and the conveying and pushing device 35 is provided with an extensible part which is arranged in a telescopic manner towards the other side along the width direction of the conveying rack bottom plate 31.

Because the two sides of the PCB are respectively positioned in the board grooves of the back board support and the bottom board support which are opposite to each other, the board grooves have a guiding effect on the PCB, and the PCB can be reliably fed by only using one conveying and pushing cylinder. Therefore, in specific implementation, the conveying and pushing device 35 is a horizontally arranged conveying and pushing cylinder, and the conveying and pushing cylinder is located in the middle of the support connecting rod 34.

The conveying supporting plate 33 is provided with a clamping guide rail 37 arranged along the length direction and a clamping plate 39 arranged along the width direction, the clamping plate 39 is slidably arranged above the clamping guide rail 37 through a sliding block, and two clamping plates are symmetrically arranged along the length direction of the clamping guide rail 37; a locking mechanism 36 for locking the relative position of the clamping plate 39 and the conveying supporting plate 33 is also arranged between the clamping plate and the conveying supporting plate.

In practice, two clamping rails 37 are arranged side by side along the width direction of the conveying pallet 33, and the locking mechanism 36 is located at the middle position of the clamping plate 39.

In implementation, the locking mechanism 36 includes locking teeth uniformly distributed along the length direction of the conveying supporting plate 33 and locking bolts vertically mounted on the clamping plate 39, and the lower ends of the locking bolts have tips matched with the locking teeth; the locking bolt is mounted on the clamping plate 39 by means of a bolt seat, which has a bolt hole matching the locking bolt, and the locking bolt is mounted in the bolt hole so as to be movable up and down.

In implementation, the conveying lifting device comprises two conveying lifting guide rods 381 vertically installed on the conveying support frame 32, and the two conveying lifting guide rods 381 are symmetrically arranged on two sides of the conveying support frame 32 in the width direction; a rotatable conveying lifting screw 382 is vertically arranged in the middle of the conveying support frame 32, the upper end of the conveying lifting screw 382 is connected with a coaxially arranged conveying lifting motor 383, and the conveying lifting motor 383 is mounted on the conveying support frame 32; the conveying supporting plate 33 is provided with a guide sleeve matched with the conveying lifting guide rod 381 and a conveying lifting screw nut matched with the conveying lifting screw 382.

The above description is only exemplary of the present invention and should not be taken as limiting, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The PCB conveying machine for automatic feeding of the PCB is characterized by comprising an automatic conveying frame (3) and a feeding frame (1) detachably mounted on the automatic conveying frame (3), wherein the automatic conveying frame (3) comprises a conveying frame bottom plate (31) which is rectangular integrally, vertically-arranged conveying support frames (32) are symmetrically arranged at two ends of the conveying frame bottom plate (31) in the length direction, a horizontally-arranged conveying supporting plate (33) is further arranged on the conveying frame bottom plate (31), a vertically-arranged conveying lifting device is mounted on the conveying support frames (32), and two ends of the conveying supporting plate (33) are connected with the conveying lifting device and can be lifted horizontally under the action of the conveying lifting device; one side of each of the two conveying support frames (32) in the width direction is also provided with a support connecting rod (34) in a connected mode, and the support connecting rods (34) are located at the tops of the conveying support frames (32); the supporting connecting rod (34) is also provided with a horizontally arranged conveying and pushing device (35), and the conveying and pushing device (35) is provided with a telescopic piece which is arranged in a telescopic manner towards the other side along the width direction of the conveying rack bottom plate (31); the feeding frame (1) comprises a bottom plate assembly (11) and a back plate assembly (12) which are vertically opposite to each other, plate grooves which horizontally penetrate through the bottom plate assembly (11) and the back plate assembly (12) are vertically and uniformly distributed on one side of the bottom plate assembly (11) opposite to the back plate assembly (12), and the plate grooves on the bottom plate assembly (11) and the back plate assembly (12) are arranged in a one-to-one opposite mode; the distance between the bottom plate assembly (11) and the back plate assembly (12) is matched with the width of the PCB;

two sides of the bottom plate component (11) in the length direction are provided with symmetrically arranged side frames (13), each side frame (13) comprises a bracket cross beam (131) arranged in parallel with the bottom plate component (11), and the bracket cross beams (131) are installed on the bottom plate component (11) through vertically arranged upright posts (132); two still have the straight line guiding mechanism who sets up along length direction on the bracket crossbeam (131), the both sides of backplate subassembly (12) through pivot (123) with straight line guiding mechanism rotationally connects, backplate subassembly (12) keep away from the one end detachably of pivot is installed on bracket crossbeam (131), and the distance of this end with pivot (123) is less than or equal to the length of stand (132), makes the pivot of backplate subassembly (12) follow straight line guiding mechanism moves towards this end after, can rotate backplate subassembly (12) downwards and make it be in mutually perpendicular state with bottom plate subassembly (11).

2. The board conveying machine for automatic PCB feeding of claim 1, wherein the conveying and pushing device (35) is a horizontally arranged conveying and pushing cylinder, and the conveying and pushing cylinder is located in the middle of the support link (34).

3. The board feeding machine for automatic feeding of PCB boards according to claim 1, wherein the conveying pallet (33) has a clamping rail (37) provided in a length direction and a clamping plate (39) provided in a width direction, the clamping plates (39) are slidably mounted above the clamping rail (37) by means of a slider, and two clamping plates are symmetrically provided in the length direction of the clamping rail (37); and a locking mechanism (36) for locking the relative positions of the clamping plate (39) and the conveying supporting plate (33) is arranged between the clamping plate and the conveying supporting plate.

4. The automatic PCB feeding and conveying machine according to claim 3, wherein the clamping rails (37) are arranged in two side by side along the width direction of the conveying supporting plate (33), and the locking mechanism (36) is positioned at the middle position of the clamping plate (39).

5. The PCB automatic feeding plate conveying machine according to claim 3 or 4, wherein the locking mechanism (36) comprises locking teeth uniformly distributed along the length direction of the conveying supporting plate (33) and locking bolts vertically installed on the clamping plate (39), and the lower ends of the locking bolts are provided with tips matched with the locking teeth; the locking bolt is mounted on the clamping plate (39) through a bolt seat, the bolt seat is provided with a bolt hole matched with the locking bolt, and the locking bolt is mounted in the bolt hole in a vertically movable mode.

6. The board feeding machine for automatic feeding of PCB boards as claimed in claim 1, wherein the conveying lifting device comprises two conveying lifting guide rods (381) vertically installed on the conveying support frame (32), the two conveying lifting guide rods (381) being symmetrically disposed at both sides of the conveying support frame (32) in the width direction; the middle part of the conveying support frame (32) is also vertically provided with a rotatable conveying lifting screw rod (382), the upper end of the conveying lifting screw rod (382) is connected with a coaxially arranged conveying lifting motor (383), and the conveying lifting motor (383) is installed on the conveying support frame (32); the conveying supporting plate (33) is provided with a guide sleeve matched with the conveying lifting guide rod (381) and a conveying lifting screw nut matched with the conveying lifting screw (382).

7. The board feeding machine for automatic feeding of PCB boards according to claim 1, wherein the floor board assembly (11) comprises a floor board bracket (111) having a rectangular shape and a floor board tray (112) provided on the floor board bracket (111); the back plate assembly (12) comprises a rectangular back plate bracket (121) and a back plate support (122) arranged on the back plate bracket (121); the board slots are arranged on the bottom board support (112) and the back board support (122).

8. The PCB conveying machine for automatic feeding of PCB boards as claimed in claim 7, wherein one side of the back plate support (121) departing from the back plate support (122) is further provided with stainless steel flat mouth hasps symmetrically arranged at both sides of the back plate support (121) in the width direction, and both the upright column close to the back plate support (121) and the bracket beam (131) are provided with buckle plate hooks matched with the stainless steel flat mouth hasps.

9. The board feeding machine for automatic feeding of PCB boards according to claim 1, wherein the linear guide mechanism comprises linear guide grooves provided along the length direction of the bracket beam (131), the linear guide grooves being located at the opposite sides of the two bracket beams (131); the diameter of the rotating shaft (123) is matched with the width of the linear guide groove, and the rotating shaft is rotatably and movably matched in the linear guide groove.