CN111050537A

CN111050537A - Production method of printed circuit board

Info

Publication number: CN111050537A
Application number: CN201911296902.3A
Authority: CN
Inventors: 陈国藩
Original assignee: Chongqing Qier Electronic Technology Co Ltd
Current assignee: Chongqing Qier Electronic Technology Co Ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-04-21
Anticipated expiration: 2039-12-17
Also published as: CN111050537B

Abstract

The invention discloses a production method of a printed circuit board, which comprises the steps of firstly obtaining a feeding frame, wherein the feeding frame comprises a main board component, an auxiliary board component and side frames symmetrically arranged at two sides of the main board component, the side frames comprise cross beams arranged in parallel with the main board component, and the cross beams are arranged on the main board component through vertical upright columns; the auxiliary plate component is arranged on the cross beams of the two side frames; the opposite side of the main board component and the auxiliary board component is provided with a board slot; the upright columns at two ends of the side frame are respectively arranged at two corners of the main board assembly; the two beams are also provided with linear guide mechanisms arranged along the length direction, and two sides of the auxiliary plate component in the length direction are provided with rotating shafts coaxially arranged and can be rotatably connected to a moving part of the linear guide mechanisms through the rotating shafts; at least one locking piece for detachably fixing and connecting the cross beam or the upright post is respectively arranged on two sides of the auxiliary plate component in the length direction. The invention has the advantages of convenient operation, being beneficial to reducing the labor intensity, improving the production efficiency, and the like.

Description

Production method of printed circuit board

Technical Field

The invention relates to the technical field of integrated circuit board production and manufacturing, in particular to a production method of a printed circuit board.

Background

The printed circuit board is mainly responsible for providing the wiring circuit of electronic component electrical connection, and the manufacturing process of printed circuit board includes a plurality of processes, because the electronic component that welds on printed circuit board is numerous, and the characteristic is different, and electronic component needs to weld in batches, for guaranteeing welding quality's uniformity, usually adopts automatic welding equipment to accomplish electronic component's placing and welding, and printed circuit board passes through the conveyer belt and carries in the automatic welding equipment. At present, in order to automatically feed printed circuit boards onto a conveyor belt, it is common to automatically feed printed circuit boards onto a board slot of a feeding frame in layers. And on the other hand, after the welding of printed circuit board is accomplished, need store the frame through the material and carry out the temporary storage and place and shift. In the existing production method, multiple times of feeding are required manually, the labor intensity is high, and the production efficiency is low.

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 production method of a printed circuit board, which is convenient to operate, is beneficial to reducing the labor intensity and improving the production efficiency.

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

a production method of a printed circuit board is characterized by comprising the following steps of firstly obtaining a feeding frame with a structure as follows, wherein the feeding frame comprises a main board component and an auxiliary board component which are vertically arranged in parallel and are just opposite to each other, and side frames which are symmetrically arranged at two sides of the main board component in the length direction, the side frames comprise cross beams which are arranged in parallel with the main board component, and the cross beams are arranged on the main board component through at least two vertical upright posts; the auxiliary plate assembly is arranged on the cross beams of the two side frames; the opposite sides of the main board assembly and the auxiliary board assembly are provided with board grooves which are arranged oppositely, the board grooves are respectively arranged in a penetrating way along the width direction of the main board assembly and the auxiliary board assembly and are arranged at equal intervals along the length direction; the upright columns at two ends of the side frame are respectively arranged at two corners of the main board component in the width direction; the two beams are also provided with linear guide mechanisms arranged along the length direction, and two sides of the auxiliary plate assembly in the length direction are provided with rotating shafts coaxially arranged and rotatably connected to a moving part of the linear guide mechanisms through the rotating shafts; at least one locking piece used for detachably and fixedly connecting the cross beam or the upright post is respectively arranged on two sides of the auxiliary plate assembly in the length direction, and the locking piece is positioned on the auxiliary plate assembly and is far away from the rotating shaft;

when the auxiliary board assembly is used, the locking piece is disconnected from the cross beam, the auxiliary board assembly is moved along the linear guide mechanism, the rotating shaft of the auxiliary board assembly is positioned at the end part of the cross beam, then the auxiliary board assembly is rotated to be in a state that the main board assembly is vertical to the main board assembly, and the locking piece is fixedly connected with the upright post and used for placing a printed circuit board; during material loading, with the disconnection of lock even piece and stand, follow sharp guiding mechanism and remove the pivot of assisting the board subassembly, then will assist the board subassembly and rotate the state that parallels with the mainboard subassembly for printed circuit board's material loading.

The automatic conveying frame comprises a conveying frame bottom plate which is rectangular as a whole, 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 the 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;

when the automatic feeding device is used, the feeding frame is vertically placed on the conveying supporting plate.

Furthermore, the locking piece is a stainless steel flat nozzle buckle which is arranged on one side of the auxiliary plate assembly, which is far away from the plate groove, and the stainless steel flat nozzle buckle is arranged outwards along the length direction of the auxiliary plate assembly; the crossbeam and the upright post are respectively provided with a matched hasp plate hook which is correspondingly arranged with the stainless steel flat nozzle hasp.

Further, the stand includes the head mast and installs telescopically the last supplementary stand of head mast, still install on the head mast be used for with it is relative to assist the stand locking mechanism that the head mast locking is fixed.

Furthermore, the auxiliary plate assembly is provided with a guide hole arranged along the width direction, and two sides of the auxiliary plate assembly in the length direction are provided with strip-shaped holes communicated with the guide hole; but install axial displacement's guide bar in the guiding hole, the pivot passes through the bar hole is installed perpendicularly on the guide bar.

Furthermore, the main upright post is an upright post sleeve, the auxiliary upright post is an upright post core tube coaxially inserted in the upright post sleeve, and the outer diameter of the upright post core tube is matched with the inner diameter of the upright post sleeve; mounting flanges protruding outwards are arranged at the ends, away from each other, of the upright post core tube and the upright post sleeve, and bolt holes are uniformly distributed in the circumferential direction on the mounting flanges; the upright post core tube and the upright post sleeve are respectively installed on the main board assembly and the cross beam through installation flanges.

Furthermore, an external thread is arranged at one end of the upright post sleeve, which is far away from the mounting flange, and the end is provided with a plurality of notches which are uniformly distributed along the circumferential direction, and the notches are arranged along the axial direction of the upright post sleeve; locking mechanism establishes for the cover the lock sleeve on the stand core pipe, the hole of lock sleeve is for the orientation the horn mouth that the stand sleeve pipe set up, and the orientation stand sheathed tube one end have with the last external screw thread assorted internal thread of stand sleeve pipe.

Furthermore, the linear guide mechanism comprises linear guide grooves arranged along the length direction of the cross beams, and the linear guide grooves are positioned on one opposite sides of the two 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 cross 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 cross 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 in a protruding mode along the radial direction, and the thickness of the annular convex rib is smaller than the depth of the guide groove.

In conclusion, the invention has the advantages of convenient operation, being beneficial to reducing the labor intensity, improving the production efficiency, and the like.

Drawings

Fig. 1 is a schematic structural view of the loading frame in a transverse placement state.

Fig. 2 is an enlarged schematic view of the circle in fig. 1.

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 view of the loading frame deformed into an L-shaped bracket state.

Fig. 6 is a schematic structural view of a frame body part of the material storage frame.

Fig. 7 is a schematic view of a connecting structure of the partition board and the upper beam.

Detailed Description

The invention will be described in further detail below with reference to an embodiment of an SMT production line.

In the specific implementation: an SMT production line comprises a plurality of welding lines consisting of a chip mounter, reflow soldering and a wave-soldering furnace, and further comprises an automatic conveying frame 3 used for conveying a printed circuit board and a feeding frame 1 used for placing the printed circuit board, as shown in figures 1-4.

The feeding frame 1 comprises a main board assembly 11 and an auxiliary board assembly 12 which are vertically arranged and are arranged in parallel and oppositely, and side frames 13 symmetrically arranged on two sides of the main board assembly 11 in the length direction, wherein each side frame 13 comprises a cross beam 131 arranged in parallel with the main board assembly 11, and the cross beams 131 are arranged on the main board assembly 11 through at least two vertical upright posts 132; the auxiliary plate assembly 12 is mounted on the cross beams 131 of the two side frames 13; the opposite sides of the main board assembly 11 and the auxiliary board assembly 12 are provided with board grooves which are arranged oppositely, the board grooves are respectively arranged in a penetrating way along the width direction of the main board assembly 11 and the auxiliary board assembly 12 and are arranged at equal intervals along the length direction; the upright posts 132 at the two ends of the side frame 13 are respectively installed at two corners of the main board assembly 11 in the width direction; the two beams 131 are further provided with linear guide mechanisms arranged along the length direction, and two sides of the auxiliary plate assembly 12 in the length direction are provided with rotating shafts 123 coaxially arranged and rotatably connected to moving parts of the linear guide mechanisms through the rotating shafts 123; at least one locking piece for detachably and fixedly connecting the cross beam 131 or the upright post 132 is respectively arranged on two sides of the auxiliary plate assembly 12 in the length direction, and the locking piece is positioned on the auxiliary plate assembly 12 away from the rotating shaft 123;

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 frames 32, and two ends of the conveying supporting plate 33 are connected with the conveying lifting device and can be lifted and lowered horizontally 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 a telescopic piece which is telescopically arranged towards the other side along the width direction of the conveying rack bottom plate 31;

the loading frame 1 is detachably mounted on the conveying support plate 33 of the automatic conveying frame 3.

By adopting the structure, the loading frame is detachably arranged on the automatic conveying frame, so that the standby loading frame can be used, the loading of the printed circuit board is completed in advance, and then the continuous loading requirement is realized through the integral replacement of the loading frame. Because the locking piece on the auxiliary plate assembly is detachably connected with the cross beam and the upright post, and the rotating shaft of the auxiliary plate assembly is rotatably connected with the moving part of the linear guide mechanism. Like this, when the lock even breaks off with crossbeam and stand, just can remove the pivot position on the auxiliary plate subassembly along the crossbeam through sharp guiding mechanism's moving part, because the auxiliary plate subassembly rotationally connects on the moving part through the pivot, when moving the pivot to the one end of crossbeam, just can rotate vertical state with the auxiliary plate subassembly, and through the lock even on the auxiliary plate subassembly with the vertical fixing of auxiliary plate subassembly on the stand, make mainboard subassembly and auxiliary plate subassembly form L shape, as shown in figure 5, be out of shape and be used for loading printed circuit board's bracket on each flow station, realize the dual function of material loading frame and bracket, in printed circuit board circulation in-process, need not to carry out the secondary to the material loading frame, save printed circuit board's load time, and the production efficiency is improved.

In implementation, the locking piece is a stainless steel flat nozzle buckle mounted on one side of the auxiliary plate assembly 12, which is far away from the plate groove, and the stainless steel flat nozzle buckle is arranged outwards along the length direction of the auxiliary plate assembly 12; the crossbeam 131 and the upright post 132 are both provided with matched hasp plates which are correspondingly arranged with the stainless steel flat nozzle hasp.

Therefore, no matter the auxiliary plate assembly is in a vertical state or a horizontal state, the auxiliary plate assembly can be rapidly fixed and detached through the cooperation of the stainless steel flat nozzle hasp and the hasp plate hook, and the operation and the use are convenient.

In practice, the upright 132 includes a main upright 132a and an auxiliary upright 132b telescopically mounted on the main upright 132a, and the main upright 132a is further mounted with a locking mechanism 132c for locking and fixing the auxiliary upright 132b relative to the main upright 132 a.

Because the stand of side bearer comprises through main column and the auxiliary column that can stretch out and draw back relatively to can adjust the overall height that the relative position of main column and auxiliary column adjusted the stand, make mainboard subassembly and the material loading demand that the interval of auxiliary plate subassembly can adapt to the printed circuit board of different width, the commonality is good, and reuse rate is high, reduces the quantity of material loading frame, is favorable to reduce cost to drop into.

In implementation, the auxiliary plate assembly 12 is provided with a guide hole arranged along the width direction, and two sides of the auxiliary plate assembly 12 in the length direction are provided with strip-shaped holes communicated with the guide hole; but install axial displacement's guide bar in the guiding hole, pivot 123 passes through the bar hole is installed perpendicularly on the guide bar.

Because the stand can be according to printed circuit board's width adjustment length, if the pivot is fixed to the distance of assisting board subassembly one end, then assist the board subassembly can be because of the length change of stand and can't become the bracket of L shape with mainboard subassembly amalgamation under vertical state. But install the pivot on axial displacement's guide bar, can make the pivot adjust the position in the width direction of assisting the board subassembly for stand length variation back, formation L shape bracket that assists the board subassembly and also can be fine with the mainboard subassembly.

In implementation, the main upright 132a is an upright sleeve, the auxiliary upright 132b is an upright core tube coaxially inserted into the upright sleeve, and the outer diameter of the upright core tube is matched with the inner diameter of the upright sleeve; mounting flanges protruding outwards are arranged at the ends, away from each other, of the upright post core tube and the upright post sleeve, and bolt holes are uniformly distributed in the circumferential direction on the mounting flanges; the upright post core tube and the upright post sleeve are respectively arranged on the main board assembly 11 and the cross beam 131 through mounting flanges.

Like this, because the external diameter of stand core pipe and the sheathed tube internal diameter phase-match of stand for the two can remain coaxial state throughout, make mainboard subassembly and the supplementary board subassembly after the adjustment still be in mutual just right state, avoid mainboard subassembly and the board groove dislocation on the supplementary board subassembly, guarantee to place printed circuit board on the board groove and can smoothly feed. And the structure of the upright post sleeve and the upright post core tube is simple, and the operation and the use are convenient.

When the installation method is implemented, an external thread is arranged at one end of the upright post sleeve, which is far away from the installation flange, and the end is provided with a plurality of notches which are uniformly distributed along the circumferential direction, and the notches are arranged along the axial direction of the upright post sleeve; locking mechanism 132c establishes for the cover the lock sleeve on the stand core pipe, the hole of lock sleeve is for the orientation the horn mouth that the stand sleeve pipe set up, and the orientation the sheathed tube one end of stand have with the epaxial external screw thread assorted internal thread of stand sleeve.

Therefore, the locking sleeve is connected with the upright post sleeve through the threads, the locking sleeve is rotated to enable the locking sleeve to move towards the upright post sleeve along the axial direction, the inner hole of the locking sleeve extrudes the tube wall of the upright post sleeve inwards, the tube wall of the upright post sleeve tightly embraces the upright post core tube, and the upright post sleeve and the tube wall can be relatively locked and fixed.

In practice, the locking sleeve is provided with two lugs which are formed by protruding outwards along the radial direction.

Thus, the locking sleeve can be rotated more conveniently.

In implementation, the linear guide mechanism includes linear guide grooves arranged along the length direction of the cross beams 131, and the linear guide grooves are located on opposite sides of the two cross 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 cross beams 131, and the linear guide grooves are located in the middle of the guide plates and penetrate through the guide plates in the thickness direction; the side of the guide plate facing the cross beam 131 is provided with a guide groove formed along the edge of the linear guide groove in a concave manner; the end of the shaft 123 has an annular rib formed to protrude in a radial direction, and the thickness of the annular rib is smaller than the depth of the guide groove.

During the assembly, pass the straight line guide way of deflector with the one end of pivot to install on assisting the board subassembly through the bolt, then install the deflector on the bracket crossbeam, just can restrict the epaxial annular bead of commentaries on classics between deflector and crossbeam, when making the deflector lead the pivot of assisting the board subassembly, still utilize the distance of two pivot tip to restrict and adjust the interval of two deflectors or crossbeams.

In implementation, the projection of one end of the cross beam 131 in the vertical direction extends out of the main board assembly 11, and the bottom of the end is provided with a hook groove which transversely penetrates through to form a hook 14; the operation shelf 2 is used for operating the printed circuit board, the operation shelf 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, so that the hook 14 can be hooked on the shelf hook groove; the bottom of the running goods shelf 2 is provided with universal wheels 22 which are uniformly distributed.

Like this, when becoming the bracket of material loading frame formation L shape, can collude the goods shelves collude the inslot at the crossbeam through the couple, and the crossbeam is rectangular structure usually, also can collude the bracket exactly in the both sides of crossbeam to can utilize a crossbeam to collude and hang two rows of brackets, can also guarantee that the whole focus of two rows of brackets is close to crossbeam place position, make whole result more stable. And the bracket can be taken down from the operation goods shelf when placing the printed circuit board, so that the occupied space of the operation goods shelf can be reduced, the bracket is convenient to place, the vacant operation goods shelf can be used for operating the bracket on other stations, and the transfer utilization rate of the operation goods shelf is improved.

In implementation, the operation shelf 2 further includes 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 practice, the running rack 2 comprises a horizontally arranged I-shaped underframe 24, and the universal wheels 22 are arranged at four corners of the underframe 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 operation shelf 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 implementation, the conveying and pushing device 35 is a conveying and pushing cylinder horizontally arranged, and the conveying and pushing cylinder is located in the middle of the support connecting rod 34.

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.

In practice, the conveying supporting plate 33 is provided with a clamping guide rail 37 arranged along the length direction and two clamping plates 39 arranged along the width direction, the clamping plates 39 are slidably mounted above the clamping guide rail 37 through sliding blocks, and the 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.

Therefore, the main plate assembly and the auxiliary plate assembly can be clamped from two sides of the feeding frame through the two clamping plates symmetrically arranged on the clamping guide rail, 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.

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

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 via 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.

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.

In implementation, a longitudinal beam 133 vertically connected and arranged is further arranged between the two cross beams 131, and the longitudinal beam 133 is installed above the hook 14.

Therefore, the strength and the stability between the two cross beams can be improved through the longitudinal beams, and the bending deformation of the two side frames is avoided. Meanwhile, the longitudinal beam is arranged at one end of the cross beam, so that the main board assembly, the auxiliary board assembly and the two side frames can be guaranteed to form a fully-open storage space, and the printed circuit board can be conveniently placed in a bracket state.

In implementation, the motherboard assembly 11 includes a motherboard bracket 111 and a motherboard bracket 112 disposed on the motherboard bracket 111; the auxiliary plate assembly 12 comprises a rectangular auxiliary plate bracket 121 and an auxiliary plate support 122 arranged on the auxiliary plate bracket 121; the board slots are respectively arranged on the main board support 112 and the auxiliary board support 122.

In implementation, the material storage rack further comprises a material storage rack for storing the printed circuit board, as shown in fig. 6, the material storage rack comprises two symmetrically arranged vertical racks 41, the upper ends and the lower ends of the two vertical racks 41 are respectively connected with an upper cross beam 42 and a lower cross beam 43, and at least 2 upper cross beams 42 and at least 2 lower cross beams 43 are arranged at intervals along the width direction of the vertical racks 41; a plurality of partition plates 44 arranged in parallel are further arranged between the two vertical frames 41, a shelf 45 arranged in a protruding manner is arranged at the bottom of one side of each two adjacent partition plates 44, and the shelf 45 is higher than the lower cross beam 43; the feeding frame is placed on the shelf 45 on two adjacent partition plates 44, the upper ends and the lower ends of the partition plates 44 are respectively and movably arranged on the upper cross beam 42 and the lower cross beam 43 along the axial direction, and the upper ends and the lower ends of the partition plates 44 are also provided with locking pieces for fixing the partition plates 44 on the upper cross beam 42 and the lower cross beam 43.

Because the feeding frame is required to be used for feeding for many times in the welding production process of the printed circuit board, the size of the feeding frame is required to meet the size requirement of the printed circuit board, the shelf is arranged at the bottom of the partition plate, and the feeding frame is directly placed on the shelf, so that the existing feeding frame can be fully utilized, the structure of the frame body can be simplified, the loading efficiency is improved, and the labor intensity of workers is reduced. In addition, because the baffle can move along entablature and bottom end rail to the interval between two adjacent baffles of adjustment makes the width that the interval of two adjacent baffles suited the work or material rest, is applicable to the printed circuit board of multiple size and uses, and application scope is wider.

In practice, the upper end and the lower end of the partition 44 are respectively mounted on the upper beam 42 and the lower beam 43 through a pressing piece 46, the middle of the pressing piece 46 is provided with a protrusion corresponding to the upper beam 42 or the lower beam 43, one end of the pressing piece is mounted on the partition 44 through a bolt, and the other end of the pressing piece is pressed on the partition 44 through the locking piece.

Therefore, the partition plate can be replaced or added only by detaching the bolt at one end of the pressing sheet from the partition plate, and the installation and the maintenance are convenient and flexible.

In practice, as shown in fig. 7, the locking member includes a rotating shaft disposed along the thickness direction of the partition 44 and a cam mounted on the rotating shaft, and two of the rotating shafts are mounted on the partition via lugs; the side of the cam, which is far away from the peach top, is also provided with a handle arranged along the tangential direction; the other end of the tab 46 is located in the area between the cam and the spacer.

Therefore, the cam is rotated through the handle to press the pressing sheet, the partition plate is fixed on the upper cross beam and the lower cross beam, the cam is rotated again to enable a gap to be reserved between the pressing sheet and the upper cross beam or the lower cross beam, the partition plate can move freely, and the operation and the use are convenient and fast.

In practice, universal wheels are arranged at the bottom of the vertical frame 41.

During the use, load printed circuit board on the material loading frame earlier, carry out the material loading through automatic conveying frame, weld through the welding line, the bracket that becomes L shape with idle material loading frame, the vertical cartridge of printed circuit board through the inspection after will welding is to the bracket, reuse the couple on the bracket to hook in the goods shelves hooking groove of operation goods shelves, utilize operation goods shelves to carry printed circuit board to the welding line of next process, form material loading frame with regard to the bracket transformation again, and put material loading frame whole on automatic conveying frame, carry out the process in the back so repeatedly, until printed circuit board accomplishes last process, place material loading frame on the shelf of material storage rack at last.

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 production method of the printed circuit board is characterized by comprising the following steps of firstly obtaining a feeding frame (1) with the following structure, wherein the feeding frame (1) comprises a main board assembly (11) and an auxiliary board assembly (12) which are vertically arranged in parallel and are opposite to each other, and side frames (13) symmetrically arranged at two sides of the main board assembly (11) in the length direction, the side frames (13) comprise cross beams (131) which are arranged in parallel with the main board assembly (11), and the cross beams (131) are arranged on the main board assembly (11) through at least two vertical columns (132); the auxiliary plate assembly (12) is arranged on a cross beam (131) of two side frames (13); the opposite sides of the main board assembly (11) and the auxiliary board assembly (12) are provided with board grooves which are arranged oppositely, the board grooves are respectively arranged in a penetrating way along the width direction of the main board assembly (11) and the auxiliary board assembly (12) and are arranged at equal intervals along the length direction; the upright posts (132) at two ends of the side frame (13) are respectively arranged at two corners of the main board component (11) in the width direction; the two beams (131) are also provided with linear guide mechanisms arranged along the length direction, and two sides of the auxiliary plate assembly (12) in the length direction are provided with rotating shafts (123) coaxially arranged and rotatably connected to moving parts of the linear guide mechanisms through the rotating shafts (123); two sides of the auxiliary plate assembly (12) in the length direction are respectively provided with at least one locking piece for detachably and fixedly connecting the cross beam (131) or the upright post (132), and the locking pieces are positioned on the auxiliary plate assembly (12) far away from the rotating shaft (123);

2. The method for producing the printed circuit board according to claim 1, further comprising a step of obtaining an automatic carrier (3) having a rectangular overall carrier base plate (31), wherein vertically arranged carrier support frames (32) are symmetrically arranged at two ends of the carrier base plate (31) in the length direction, the carrier base plate (31) further has horizontally arranged carrier support plates (33), vertically arranged carrier lifting devices are installed on the carrier support frames (32), and two ends of the carrier support plates (33) are connected with the carrier lifting devices and can be horizontally lifted and lowered under the action of the carrier lifting devices; 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);

when the automatic feeding device is used, the feeding frame is vertically placed on the conveying supporting plate (33).

3. The method for producing a printed circuit board according to claim 1, wherein the locking member is a stainless steel tongue and groove mounted on a side of the sub board assembly (12) facing away from the board slot, the stainless steel tongue and groove being disposed outwardly in a longitudinal direction of the sub board assembly (12); crossbeam (131) and stand (132) all have with the assorted hasp board that the stainless steel flat mouth hasp corresponds the setting colludes.

4. The method of claim 1, wherein the post (132) comprises a main post (132a) and an auxiliary post (132b) telescopically mounted on the main post (132a), and the main post (132a) is further mounted with a locking mechanism (132c) for locking and fixing the auxiliary post (132b) relative to the main post (132 a).

5. The method for producing a printed circuit board according to claim 4, wherein the auxiliary board assembly (12) has a guide hole provided in a width direction, and both sides of the auxiliary board assembly (12) in a length direction have a bar-shaped hole penetrating the guide hole; but install axial displacement's guide bar in the guiding hole, pivot (123) pass through bar hole is installed perpendicularly on the guide bar.

6. The method for manufacturing a printed circuit board according to claim 4, wherein the main column (132a) is a column sleeve, the auxiliary column (132b) is a column core tube coaxially inserted into the column sleeve, and an outer diameter of the column core tube is matched with an inner diameter of the column sleeve; mounting flanges protruding outwards are arranged at the ends, away from each other, of the upright post core tube and the upright post sleeve, and bolt holes are uniformly distributed in the circumferential direction on the mounting flanges; the upright post core tube and the upright post sleeve are respectively arranged on the main board assembly (11) and the cross beam (131) through mounting flanges.

7. The method for manufacturing a printed circuit board according to claim 1, wherein an end of the column sleeve facing away from the mounting flange is provided with external threads, and the end is provided with a plurality of circumferentially uniformly distributed notches, and the notches are arranged along an axial direction of the column sleeve; locking mechanism (132c) are established for the cover and are established the lock sleeve on the stand core pipe, the hole of lock sleeve is for the orientation the horn mouth that the stand sleeve pipe set up, and orientation the sheathed tube one end of stand have with the epaxial external screw thread assorted internal thread of stand sleeve.

8. A method for producing a printed circuit board according to claim 1, wherein the linear guide mechanism comprises linear guide grooves provided along a length direction of the cross member (131), the linear guide grooves being located on opposite sides of the two cross members (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.

9. The method for manufacturing a printed circuit board according to claim 8, wherein the linear guide mechanism comprises guide plates installed inside the two cross beams (131), and the linear guide grooves are located in the middle of the guide plates and penetrate in the thickness direction of the guide plates; one side of the guide plate facing the cross beam (131) 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 (123) is provided with an annular convex rib which is formed in a protruding mode in the radial direction, and the thickness of the annular convex rib is smaller than the depth of the guide groove.