CN109158402B - Printed circuit board recovery device and recovery method - Google Patents

Abstract

The invention discloses a printed circuit board recovery device, which relates to the technical field of circuit board disassembly equipment and comprises the following components: the adjusting mechanism is provided with an outlet; the PLC control system is arranged at the side end of the adjusting mechanism; the first conveying unit is arranged outside the outlet; the cutting mechanism is arranged on the first conveying unit; at least one conveying roller arranged at the side end of the first conveying unit; the scraping and grinding mechanism is arranged at the side end of the conveying roller, and the second conveying unit is arranged at the side end of the scraping and grinding mechanism; and the rolling and picking mechanism is arranged on the second conveying unit. The invention has reasonable design and simple mechanism, solves the problems of low efficiency and high labor intensity caused by manual operation in the process of placing the circuit board, solves the problem of complicated manufacture, maintenance and replacement caused by excessive fasteners of the cutting mechanism, and solves the problem of fracture caused in scraping and grinding the circuit board.

Description

Printed circuit board recovery device and recovery method

Technical Field

The invention relates to the technical field of circuit board disassembling equipment, in particular to a printed circuit board recovery device.

Background

The waste printed circuit board has various chips, capacitors, polar tubes and other parts as well as copper skeleton, soldering tin and other metals, and all of them have certain recovery value, especially the highest recovery value of soldering tin. The recovery method adopted in the prior art is to put the printed circuit board in a heating device for heating and softening to extract metals or parts, while the waste printed circuit board contains various harmful substances, so that the waste printed circuit board is required to be split, classified and recovered in order to prevent the waste printed circuit board from polluting the environment and improve the economic benefit. Before the waste printed circuit board is disassembled by utilizing equipment, the electronic elements of the waste printed circuit board can be manually ensured to be upward for disassembling, and the mode has the problems of low efficiency and strong labor.

The saw blade is needed to cut electronic components on the upper surface of the printed circuit board into the same horizontal plane in the device for disassembling the printed circuit board, the scraping and grinding mechanism is convenient to scrape and grind soldering tin, and the traditional saw blade capable of being replaced singly needs a plurality of fasteners to be fixed, so that the time for replacing the saw blade is prolonged when the saw blade is damaged or becomes blunt, and the problem of complexity of manufacturing and maintenance is also increased.

For example, chinese patent publication No. CN105818189B discloses a "printed circuit board separating machine", which includes: the tin removing device comprises a tin removing device, an element cutting device and an element scraping and cutting device, wherein the element cutting device and the element scraping and cutting device can cut off the electronic element at the upper end of the circuit substrate twice, and the tin removing device can grind off the soldering tin pin at the bottom surface of the circuit substrate in a scraping and grinding mode. The scraping and grinding mode in the detinning device is to scrape and grind the printed circuit board by the cooperation of the extrusion printed circuit board, the tin scraping hob and the grinding roller by using the elastic rubber roller, and the scraping is deeper when the extrusion force is larger. Because the elasticity of rubber drum can take place the deformation and lead to the area of contact increase with printed circuit board in the pressurization process, make it exceed with hobbing cutter and grinding roller mutually support the scope of stress point, arouse the circuit board fracture very easily.

Disclosure of Invention

One of the purposes of the invention is to solve the problems of low efficiency and high labor intensity caused by manual operation in the process of placing the circuit board.

The second purpose of the invention is to solve the problem that the cutting mechanism is too complicated to manufacture, maintain and replace due to too many fasteners.

It is a further object of the invention to solve the problem of causing cracks in the shaved circuit board.

The fourth objective of the present invention is to provide a method for recycling printed circuit boards.

In order to achieve one of the purposes, the invention adopts the following technical scheme: a printed circuit board recycling apparatus, comprising: an adjustment mechanism, adjustment mechanism are equipped with the export, and adjustment mechanism includes: the middle of the peak column is provided with a buffer groove; the overturning roller is arranged at the lower end of the buffer tank and provided with a control motor; the PLC control system is arranged at the side end of the adjusting mechanism; the first conveying unit is arranged outside the outlet; the cutting mechanism is arranged on the first conveying unit; at least one conveying roller arranged at the side end of the first conveying unit; the scraping and grinding mechanism is arranged at the side end of the conveying roller; the second conveying unit is arranged at the side end of the scraping and grinding mechanism; and the rolling and picking mechanism is arranged on the second conveying unit.

In the technical scheme, the printed circuit board is firstly placed at the opening of the adjusting mechanism, then the printed circuit board which is vertically downward is guided to the inclined surface of the peak column by gravity and slides downward along the peak column, then one surface of the printed circuit board which is attached to the peak column and is provided with the electronic element is hooked by the buffer groove of the peak column, then the other side of the printed circuit board which is provided with the electronic element is hooked by the overturning roller under the control of the PLC control system and overturned, and the printed circuit board enters the first conveying unit from the outlet, so that the circuit board is automatically placed. And finally, the first conveying unit and the cutting mechanism are matched to cut the electronic components on the printed circuit board, enter the scraping mechanism to scrape tin after being buffered by the conveying roller, and are conveyed to the tin rolling mechanism by the third conveying unit to remove the electronic components of the printed circuit board.

Further, in the embodiment of the invention, the turning roller is provided with a turning hook for hooking the electronic element on the printed circuit board to perform turning adjustment work.

Furthermore, in the embodiment of the invention, the first conveying unit is provided with the soldering tin hole, and the soldering tin hole can accommodate soldering tin on the printed circuit board, so that the friction force of the printed circuit board is increased, and the cutting efficiency cannot be influenced by displacement in the cutting process; the first transmission unit is provided with a first transmission motor, and the first transmission motor is connected with the PLC control system through wired or wireless communication; the second conveying unit is provided with a second conveying motor, the second conveying motor is connected with a PLC control system through wired or wireless communication, and the PLC control system controls the first conveying motor and the second conveying motor and is more efficient than manual control.

Further, in the embodiment of the invention, a rotating motor is arranged in the cutting mechanism, a bracket is arranged at the side end of the cutting mechanism, the rotating motor is connected with the bracket, and the rotating motor drives the cutting mechanism to perform cutting operation.

Further, in the embodiment of the invention, the top end of the adjusting container is provided with an opening for accommodating the printed circuit board.

Further, in the embodiment of the invention, the scraping and grinding roller and the limiting roller are arranged, the limiting roller is arranged right above the scraping and grinding roller, the limiting roller has elasticity, the scraping and grinding roller is provided with a sharp metal scraping head, and the limiting roller is used for pressurizing the printed circuit board and is matched with the scraping and grinding roller to scrape off soldering tin.

Furthermore, in the embodiment of the invention, the rolling pick mechanism is provided with the rolling pricks, the positions of the rolling pricks correspond to the positions of the holes on the printed circuit board, and the precision is high during the picking.

Furthermore, in the embodiment of the present invention, the adjusting mechanism further includes an adjusting container, a space for accommodating the peak column is provided in the adjusting container, the peak column is disposed in the adjusting container, the peak column is in a shape of a peak, a top end of the peak column is a hemisphere, and the peak column is located at a lower end of the opening. The printed circuit board W falls onto the peak column from the opening, and under the gravity factor, the printed circuit board moves laterally along the peak column from the hemispherical body in a guiding manner, so that the printed circuit board is prevented from vertically moving downwards, and the primary position adjustment of the printed circuit board is realized; the side wall of the upper end in the adjusting container is provided with an inclined plane which concentrates the printed circuit board on the peak column, so that the opening can accommodate more printed circuit boards; the side wall of the upper end in the adjusting container is provided with a first parallel wall which is parallel to the upper end surface of the peak column and is provided with a channel through which a single printed circuit board can pass, so that the printed circuit board is prevented from being overturned and separated from the peak column in the process of downwards sliding because the peak column is provided with chips or under the action of external force such as wind and the like; the bottom end face of the adjusting container is provided with a base, the adjusting container is connected with the upper end face of the base, the lower end face of the base is provided with an external box, the base is connected with the external box, a driving motor is arranged in the external box, the center of the lower end of the peak column is provided with a rotating rod, the two ends of the rotating rod are connected with the driving motor and the peak column, the driving motor is connected with a PLC (programmable logic controller) system 8 through wired or wireless communication, the PLC system controls the peak column to rotate to adjust the position where the side end face of the printed circuit board is attached to the peak column, so that the upper surface or the bottom of the printed circuit; the side wall of the middle end in the adjusting container is provided with a turnover area, and the buffer tank and the turnover roller are positioned in the turnover area, so that the printed circuit board can be conveniently turned over; the well downside end of peak post is equipped with sunken wall, and sunken wall height is less than the upper end surface of peak post, and the upset roller setting is in the difference in height position of sunken wall and peak post middle-end surface, and it is not good to prevent that the difference in height from leading to the flip effect inadequately. The side wall of the middle lower end in the adjusting container is provided with a second parallel wall, the second parallel wall is parallel to the sunken wall surface and is provided with a channel through which a single printed circuit board can pass, so that the printed circuit board is prevented from being overturned and separated from the peak column in the downward sliding process due to the external force of chips or wind and the like left on the peak column, the lower end of the peak column is provided with a spiral slideway, and the spiral slideway is positioned under the sunken wall surface and can collect the printed circuit board; the spiral slideway is inclined, so that the printed circuit board is prevented from falling into the spiral slideway and turning over; the peak column is provided with a blocking body, the blocking body can prevent a printed circuit board from just falling into the top opening of the spiral slideway, the top opening of the spiral slideway causes the gravity imbalance to overturn, the upper end of the blocking body is in a closed angle shape, and the printed circuit board is prevented from being accumulated.

Furthermore, in the embodiment of the invention, one end of the turning roller is provided with a rotating disc, the other end of the rotating disc is provided with a force-bearing rod, the side end of the rotating disc is provided with a force-applying wheel, the side end surface of the force-applying wheel is provided with a force-applying block body, the force-applying block body is positioned on the side surface of the force-bearing rod, the surface of the force-applying wheel is provided with a bevel gear, the side end of the bevel gear is provided with a control motor, the control motor is provided with a circular gear; the control motor drives the force application block to apply force intermittently to the stress rod, so that the turnover hook is hooked intermittently and turnover adjustment is performed on the electronic element on the upper surface of the printed circuit board, and the electronic element on the printed circuit board is prevented from being hooked by the turnover hook and rotating all the time; the other end of the turnover roller is provided with a rotating spring which plays a role in resetting the turnover roller to prevent the printed circuit board from moving downwards due to the fact that electronic elements which still hook the printed circuit board after the turnover hook turns the printed circuit board are still immobile, and the turnover roller realizes the position adjustment of the printed circuit board in the third step.

Furthermore, in the embodiment of the present invention, the turning hook includes a lower end surface of the sharp hook, and the lower end surface of the sharp hook is in a horizontal state when the turning hook is in a vertical state, so as to prevent the lower end surface of the sharp hook from bending too much towards the body direction of the turning hook, which results in the turning hook not hooking the electronic component of the printed circuit board. The upper end dog-ear of upset hook is the arc angle, is equipped with the bump on the arc angle, bump level be higher than with the upset hook up end, catch on printed circuit board when the upset hook and rotate, when rotatory certain degree, the bump will form a fulcrum and overturn to printed circuit board, promote the efficiency of upset greatly.

Furthermore, in the embodiment of the present invention, the first conveying unit is disposed on the first support frame, the second conveying unit is disposed between the first support frame and the second support frame, and the rolling and picking mechanism is further disposed on the second support frame.

Furthermore, in the embodiment of the invention, the rolling and picking mechanisms are arranged on the same horizontal plane and are not aligned, so that the rolling and picking mechanisms are prevented from being not corresponding to the electronic components on the printed circuit board.

In order to achieve the second purpose, the invention adopts the following technical scheme: a printed circuit board recycling apparatus, comprising: an adjustment mechanism, adjustment mechanism are equipped with the export, and adjustment mechanism includes: the middle of the peak column is provided with a buffer groove; the overturning roller is arranged at the lower end of the buffer tank and provided with a control motor; the PLC control system is arranged at the side end of the adjusting mechanism; the first conveying unit is arranged outside the outlet; the cutting mechanism is arranged on the first conveying unit and is provided with a saw blade with a tongue; at least one conveying roller arranged at the side end of the first conveying unit; the scraping and grinding mechanism is arranged at the side end of the conveying roller; the second conveying unit is arranged at the side end of the scraping and grinding mechanism; and the rolling and picking mechanism is arranged on the second conveying unit.

In the technical scheme, the position of the printed circuit board is adjusted by matching the buffer groove of the adjusting mechanism and the overturning roller, then the first transmission unit and the cutting mechanism are matched to cut the electronic component on the printed circuit board, the tongue part of one saw blade with the tongue can be overlapped on the other saw blade with the tongue, the saw blades can be fixed by only one fastener in an overlapping mode, and the problem that manufacturing, maintenance and replacement are too complicated due to too many fasteners is solved. And finally, after being buffered by the conveying roller, the printed circuit board enters a scraping mechanism for scraping tin, and then is conveyed to a tin rolling mechanism by a third conveying unit for removing the electronic components of the printed circuit board.

Further, in an embodiment of the present invention, the cutting mechanism has an upper platen and a base plate with a tabbed saw blade disposed therebetween.

Furthermore, in the embodiment of the invention, the right end of the saw blade with the tongue is provided with the notch, and the notch is used for eliminating stress, increasing the flexibility of the saw blade with the tongue and improving the resistance to vertical bending; the left end of the saw blade with the tongue is provided with a stable area, the right end of the stable area is provided with an inclined stable surface, the lower end of the gap is provided with a transition area, the extending part of the transition area is higher than the saw blade with the tongue, the extending part of the transition area is provided with a second interface, and the right end of the stable surface is provided with a first interface; the first interface of one saw blade with the tongue is aligned with the second interface of the other saw blade with the tongue in the same vertical horizontal direction, the stable surface of one saw blade with the tongue is attached to the right end surface of the transition area of the other saw blade with the tongue, and the end surface of the stable area of one saw blade with the tongue is attached to the lower end surface of the notch of the other saw blade with the tongue, so that the transverse contact area of the two saw blades with the tongue is increased, the longitudinal rigidity is improved, and the strength of the whole cutting mechanism is also increased; the cutting mechanism also has fasteners that secure the first interface of one tabbed saw blade to the second interface of another tabbed saw, preventing multiple fasteners from being secured resulting in excessive mass affecting tool acceleration/deceleration cycle speed variations, which in turn causes vibrations that may result in slower cutting speeds, reducing cutting efficiency, and preventing the increased number of fasteners not only lengthening the time required for a blade to be replaced but also increasing manufacturing and maintenance complexity, and ultimately preventing more assembly time and labor.

Further, in the embodiment of the invention, a blanking hopper is arranged below the first conveying unit and used for collecting the electronic components, a third conveying unit is arranged in the blanking hopper, the third conveying unit is provided with a third conveying motor, the third conveying motor is connected with the PLC control system through wired or wireless communication, and a sundry collecting box is arranged at the side end of the third conveying unit and used for conveying the electronic components into the sundry collecting box for collection.

Further, in the embodiment of the invention, one upper pressure plate corresponds to one saw blade with the tongue, so that the saw blade with the tongue can be conveniently and quickly replaced.

Furthermore, in the embodiment of the invention, a rotating motor is arranged in the cutting mechanism, a bracket is arranged at the side end of the cutting mechanism, the rotating motor is connected with the bracket, a plurality of upper pressure plates are mutually attached, the upper pressure plates are provided with inner walls of the pressure plates towards the center direction of the bottom plate, the center of the bottom plate is connected with one end of the rotating motor, the other end of the rotating motor is connected with the bracket, the side end of the rotating motor is attached to the inner walls of the pressure plates, and the contact area between the upper.

Furthermore, in the embodiment of the invention, the upper end of the cutting mechanism is provided with the water tank which is fixed on the bracket, and the upper end of the water tank is provided with the tank cover, so that water can be conveniently added; the lower end of the water tank is provided with the sprinkler heads which are positioned at two sides of the cutting mechanism and used for flushing the electronic elements cut off by the printed circuit board by the cutting mechanism, preventing the electronic elements from remaining on the first transmission unit to influence cutting and cooling the saw blade with the tongue, and preventing the saw blade with the tongue from deforming due to the reduction of the overheating hardness; the spraying head is internally provided with a small relay, one end of the small relay is provided with an electromagnetic valve, the electromagnetic valve is connected with a PLC control system in a wired or wireless mode, and the PLC control system controls the electromagnetic valve to further work and spray, so that the spraying head is more efficient than a manual control spraying head.

In order to achieve the third purpose, the invention adopts the following technical scheme: a printed circuit board recycling apparatus, comprising: an adjustment mechanism, adjustment mechanism are equipped with the export, and adjustment mechanism includes: the middle of the peak column is provided with a buffer groove; the overturning roller is arranged at the lower end of the buffer tank and provided with a control motor; the PLC control system is arranged at the side end of the adjusting mechanism; the first conveying unit is arranged outside the outlet; the cutting mechanism is arranged on the first conveying unit and is provided with a saw blade with a tongue; at least one conveying roller arranged at the side end of the first conveying unit; a scraping and grinding mechanism, the scraping and grinding mechanism is arranged at the side end of the conveying roller, and the scraping and grinding mechanism is provided with: the scraping and grinding roller is provided with a brush cutting head; the limiting roller is positioned above the scraping and grinding roller and is provided with a limiting block and a steel ring; the second conveying unit is arranged at the side end of the scraping and grinding mechanism; and the rolling and picking mechanism is arranged on the second conveying unit.

In the technical scheme, the embodiment of the invention firstly uses the matching of the buffer slot of the adjusting mechanism and the overturning roller to adjust the position of the printed circuit board, the first transfer unit and the cutting mechanism are then configured to cooperate to cut the electronic components on the printed circuit board, and thereafter, after being buffered by the conveying roller, the tin scraping roller enters a scraping and grinding mechanism to scrape tin, a limiting block in the middle of the limiting roller applies certain pressure to the printed circuit board in the tin scraping process, meanwhile, the steel ring is deformed by the pressure of the printed circuit board, the limiting blocks on the left side and the right side of the limiting roller move towards the printed circuit board and clamp the printed circuit board, the displacement during scraping is prevented, the stressed area cannot be changed, then, the scraping and cutting head scrapes and grinds the soldering tin of the printed circuit board, and the problem that the printed circuit board is broken due to the fact that the pressure area of one end of the printed circuit board is too large and the stress area of the other end of the printed circuit board is too small when the printed circuit board is scraped and ground is solved. And finally, the printed board electronic components are conveyed to the rolling tin mechanism by the third conveying unit to be removed.

Further, in the embodiment of the present invention, the scraping and grinding roller is provided with a first height and a second height, the first height is higher than the second height, the brush cutting head is arranged between the first heights, the bottom end of the brush cutting head is attached to the second height, the front end and the rear end of the brush cutting head extend and are clamped in the first height, the right lower end of the brush cutting head is provided with a reinforcing plate, the two ends of the reinforcing plate are fixedly connected in the first height, the center of the reinforcing plate is provided with a through hole, and the brush cutting head is fixed through the through hole; on the one hand, the fixed brush cutting head that reinforcing plate and the cooperation of first height can be firm to can make the most stress of brushing the cutting head conduct during the operation and eliminate in the first height, avoid brushing the cutting head impaired, on the other hand, the through-hole is conveniently changed and is brushed the cutting head, saves the time that need change brush cutting head, improves the efficiency of scraping and grinding.

Further, in the embodiment of the present invention, a collecting hopper is disposed right below the scraping mechanism, and the collecting hopper is used for collecting the solder.

Further, in the embodiment of the present invention, a fourth conveying unit is provided in the solder collecting hopper, the fourth conveying unit is provided with a fourth conveying motor, the fourth conveying motor is connected to the PLC control system through wired or wireless communication, a solder collecting box is provided at a side end of the fourth conveying unit, and the fourth conveying unit is used for conveying solder to the solder collecting box for collection.

Furthermore, in the embodiment of the invention, the brush cutting head is provided with the cutting edge which is triangular, the cutting edge is thickened from the top end to the bottom end, and the angle formed by two sides of the top end of the cutting edge is more than 100 degrees, so that the rigidity of the top end of the cutting edge is enhanced, and higher impact force can be borne during work; the cutting edge position corresponds to the position of the hole in the printed circuit board and is not aligned with the scraping and grinding roller in the same horizontal plane, the cutting edge is prevented from not corresponding to the electronic element on the printed circuit board, a cutting head groove is formed between the cutting edges and is bent and used for guiding soldering tin to leave the brush cutting head, and the soldering tin is guided to leave the scraping and grinding roller at the second height, so that the soldering tin is convenient to collect.

Furthermore, in the embodiment of the invention, the rotary column is arranged in the limiting roller, the steel ring is arranged between the rotary column and the limiting roller, and the elastic support column is arranged between the steel ring and the rotary column, so as to prevent the fatigue of the steel ring from being reduced in the process of extruding the steel ring.

Furthermore, in the embodiment of the invention, the limiting block is arranged at one end of the steel ring facing the inner wall of the limiting roller and penetrates through the limiting roller for a certain distance; the stopper extrudees printed circuit board, and the stopper contracts, and the steel ring atress warp simultaneously, and the stopper of controlling both sides receives the influence of steel ring to move to the printed circuit board direction and until chucking printed circuit board, prevents to scrape the displacement of grinding in-process printed circuit board.

In order to achieve the fourth purpose, the invention adopts the following technical scheme: a method of recycling a printed circuit board, comprising the steps of:

a) placing the printed circuit board into the opening of the adjusting mechanism;

b) guiding the printed circuit board in the vertical downward direction to the cambered surface of the hemisphere by gravity and sliding downwards along the peak column in the shape of a mountain peak;

c) the printed circuit board with the side end surface of the printed circuit board attached to the surface of the peak column is prevented from moving downwards through an included angle formed by the inclined surface facing the peak column and the peak column, and then the printed circuit board with the side end surface of the printed circuit board attached to the surface of the peak column is adjusted to be a channel which is formed by the first parallel wall and the peak column, is only capable of allowing a single printed circuit board to pass through, is attached to the peak column through the upper surface or the bottom surface of the printed circuit board, and continuously slides downwards;

d) the buffer groove of the peak column hooks one side of the printed circuit board attached to the peak column, which is provided with the electronic element, the turnover roller hooks the other side of the printed circuit board, which is provided with the electronic element, and the turnover roller quickly and effectively turns over by utilizing the height difference between the concave wall surface and the surface of the peak column and then continuously slides downwards along the concave wall surface;

e) the printed circuit board falls into the spiral slideway and enters the first conveying unit from the outlet;

f) the first transfer unit and the cutting mechanism are configured to cooperate to cut the electronic components on the printed circuit board;

g) the printed circuit board enters the conveying roller from the first conveying unit for buffering, then enters the scraping mechanism, and is scraped and ground for soldering tin on the printed circuit board by utilizing the mutual matching of the scraping roller and the limiting roller;

h) the scraped printed circuit board is conveyed to the rolling and picking mechanism by the second conveying unit to scrape and grind the electronic components on the printed circuit board.

Further, in the embodiment of the invention, the overturning mode of the overturning roller is intermittent overturning.

Further, in the embodiment of the present invention, the spiral chute is inclined.

Further, in the embodiment of the present invention, the solder on the printed circuit board of the first transfer unit is embedded in the solder hole of the first transfer unit.

Further, in the embodiment of the present invention, in step f), the sprinkler head of the water tank also sprays and cleans the electronic components remaining in the first transfer unit.

The invention has the beneficial effects that: firstly, the printed circuit board is placed at an opening of an adjusting mechanism, then the printed circuit board in a vertically downward direction is guided to a peak column inclined plane and slides downwards along the peak column through gravity, then one side, provided with electronic elements, of the printed circuit board attached to the peak column is hooked through a buffer groove of the peak column, then the other side, provided with the electronic elements, of the printed circuit board is hooked through a PLC control system and overturned, and the printed circuit board enters a first conveying unit from an outlet, so that the circuit board is automatically placed. Secondly, the cutting mechanism of the invention adopts the structure that the tongue part of one saw blade with the tongue can be overlapped on the other saw blade with the tongue, and the saw blades can be fixed only by one fastener in an overlapping mode, thereby solving the problem of complicated manufacture, maintenance and replacement caused by excessive fasteners. Third, scrape the mill mechanism and scrape the tin in-process, certain pressure is applyed to printed circuit board to the stopper in the middle of the spacing cylinder, the steel ring receives printed circuit board's pressure deformation simultaneously, the stopper of spacing cylinder left and right sides removes and cliies printed circuit board to printed circuit board, the displacement and the lifting surface area can not change when preventing to scrape the mill, then, scrape the cutting head and scrape the mill to printed circuit board's soldering tin, the one end pressure area because of printed circuit board when having solved and scraped the mill printed circuit board is too big, and the lifting surface area undersize of the other end leads to the cracked problem of printed circuit board.

Drawings

FIG. 1 is a schematic view of a printed circuit board recycling device according to an embodiment of the present invention

FIG. 2 is another schematic diagram of the printed circuit board recycling apparatus according to the embodiment of the present invention

FIG. 3 is a three-dimensional schematic view of an adjustment mechanism according to an embodiment of the invention

FIG. 4 is a schematic structural diagram of an adjusting mechanism according to an embodiment of the present invention

FIG. 5 is a schematic three-dimensional structure diagram of a dispensing mechanism according to an embodiment of the present invention

FIG. 6 is a three-dimensional schematic diagram of a flipping unit according to an embodiment of the invention

FIG. 7 is a three-dimensional schematic view of a flipping roll according to an embodiment of the present invention

FIG. 8 is a detailed view of the flip hook according to the embodiment of the present invention

FIG. 9 is a schematic diagram of the movement of the adjustment mechanism according to the embodiment of the present invention

FIG. 10 is a schematic view of the movement of the flip hook according to the embodiment of the present invention

FIG. 11 is another schematic diagram of the movement of the adjustment mechanism according to the embodiment of the present invention

FIG. 12 is a three-dimensional schematic of a water tank embodying the present invention

FIG. 13 is a three-dimensional schematic view of a saw disc according to an embodiment of the present invention

FIG. 14 is a three-dimensional schematic view of a tongue saw blade according to an embodiment of the present invention

FIG. 15 is a three-dimensional schematic view of a scraping mechanism according to an embodiment of the invention

FIG. 16 is an enlarged view of part A1 of FIG. 2

FIG. 17 is a schematic diagram of the movement of the limiting roller according to the embodiment of the present invention

Fig. 18 is a partial enlarged view of a2 of fig. 2.

In the attached drawings

1. Adjusting mechanism 110, adjusting container 111, inclined plane

112. A first parallel wall 113, a turning zone 114, a second parallel wall

115. Spiral slideway 116, peak column 1161 and hemisphere

1162. Buffer groove 1163, concave wall surface 117 and turning roller

1171. Turnover hook 11711, pointed hook lower end face 11712 and salient point

11713. Arc angle 1172, rotary table 1173, stress rod

1174. Force application wheel 11741, force application block 1175, bevel gear

1176. Circular gear 1177, control motor 1178, rotary spring

118. Blocking body 2, first conveying unit 3 and cutting mechanism

31. A lingered saw blade 311, a stabilizing zone 312, a stabilizing surface

313. Gap 314, transition region 315, first interface

316. Second interface 32, fastener 33, top board

331. Inner wall 34 of pressing plate, bottom plate 4 and conveying roller

5. A scraping mechanism 51, a scraping roller 511, a first height

512. Second height 513, brush cutting head 5131, cutting edge

5132. Cutting head groove 514, reinforcing plate 52 and limiting roller

521. Limiting block 522, steel ring 523 and rotary column

524. Elastic support column 6, second conveying unit 7 and rolling picking mechanism

71. Rolling thorn 8, PLC control system 9 and water tank

910. Sprinkler 911, tank cover 10, and external box

11. Base 12, third transfer unit 13, fourth transfer unit

14. Sundries collecting box 15, soldering tin collecting box 16 and element collecting box

17. Second support frame 18 and first support frame printed circuit board W

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of the invention and are not limiting of the embodiments of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

as shown in fig. 1, a printed circuit board recycling device comprises an adjusting mechanism 1, a first conveying unit 2, a cutting mechanism 3, a conveying roller 4, a scraping mechanism 5, a second conveying unit 6 and a rolling and picking mechanism 7.

Work piece printed circuit board W is adjusted by adjustment mechanism 1 and is put, replaces the manual work to put, raises the efficiency, saves the cost.

The placed printed circuit board W enters the first transmission unit 2, the first transmission unit 2 is driven by a first transmission motor, the first transmission motor is connected with the PLC control system 8 through wired or wireless communication, and the first transmission unit 2 is arranged on the first support frame 18. Be equipped with the soldering tin hole on the first conveying unit 2, the position between the soldering tin hole is unanimous and the aperture in soldering tin hole is greater than the hole on the printed circuit board W with the hole position on the printed circuit board W, make the soldering tin hole partly hold the soldering tin of printed circuit board W bottom, when printed circuit board W is conveyed cutting mechanism 3 by first conveying unit 2, the soldering tin hole can increase printed circuit board W and first conveying unit 2's frictional force, lead to printed circuit board W displacement when preventing the 3 cutting of cutting mechanism, influence cutting efficiency. The cutting mechanism 3 is intended to form the upper surface of the printed circuit board W on the same horizontal plane, thereby facilitating the scraping of the solder by the scraping mechanism 5.

The printed circuit board W cut to the same height is conveyed to the conveying roller 4 by the first conveying unit 2, and the conveying roller 4 buffers the conveying, so that the printed circuit board W of the first conveying unit 2 is prevented from being directly scraped and ground by soldering tin, parts (a limiting block 521) in the scraping and grinding mechanism 5 are enabled to pressurize the printed circuit board W, the soldering tin at the bottom of the printed circuit board W is tightly clamped in the soldering tin hole in the first conveying unit 2, and the soldering tin possibly remains in the soldering tin hole.

Printed circuit board W on the transfer roller 4 enters into scraping mechanism 5, and scraping mechanism 5 is including scraping cylinder 51 and spacing cylinder 52, and spacing cylinder 52 is located directly over scraping cylinder 51, and spacing cylinder 52 has elasticity, and scraping cylinder 51 has sharp metal and scrapes the head, utilizes spacing cylinder 52 to pressurize printed circuit board W and carries out scraping of soldering tin with scraping cylinder 51 cooperation, retrieves the highest soldering tin of printed circuit board W medium value.

The solder having the highest value in the printed circuit board W is recovered.

As shown in fig. 1, 2 and 18, the scraped printed circuit board W is recovered by the cooperation of the second conveying unit 6 and the rolling picking mechanism 7, the second conveying unit 6 is driven by a second conveying motor, the rolling picking mechanism 7 is driven by a rotating motor, and the rotating motor and the second conveying motor are connected with a PLC control system 8 through wired or wireless communication. The second conveying unit 6 is arranged between the first supporting frame 18 and the second supporting frame 17, and the rolling picking mechanism 7 is arranged on the second supporting frame 17. The rolling picking mechanism 7 is provided with rolling pricks 71, the positions of the rolling pricks 71 correspond to the positions of the holes on the printed circuit board W, and the electronic components on the upper surface of the printed circuit board W are conveniently picked and conveyed to the component collecting box 16 for recovery. The front and back arrangement of the picking mechanisms 7 is not aligned, so that the pins 71 are prevented from not corresponding to the electronic components on the printed circuit board W.

Specifically, as shown in fig. 3 and 5, the adjusting mechanism 1 includes an adjusting container 110 and a peak column 116, a space for accommodating the peak column 116 is provided in the adjusting container 110, an opening is provided at the top end of the adjusting container 110, the peak column 116 is in a mountain peak shape, the top end of the peak column 116 is a hemisphere 1161, and the peak column 116 is located at the lower end of the opening of the adjusting container 110. The printed circuit board W is placed at the opening of the adjusting container 110, and is guided to move laterally along the peak posts 116 from the hemispheroid 116 under the gravity factor, so that the printed circuit board W is prevented from moving vertically downwards, and the primary position adjustment of the printed circuit board W is realized.

Specifically, as shown in fig. 4 and 5, the upper end side wall of the adjusting container 110 is provided with a slope 111, and the slope 111 can concentrate the printed circuit boards W onto the peak posts 116, so that the opening of the adjusting container 110 can accommodate more printed circuit boards W.

Specifically, the upper end side wall in the adjusting container 110 is provided with a first parallel wall 112, the first parallel wall 112 is parallel to the upper end surface of the peak column 116 and is provided with a channel for allowing a single printed circuit board W to pass through, so that the printed circuit board W is prevented from being overturned and separated from the peak column 116 in the process of sliding the printed circuit board W downwards due to external force such as debris or wind left by the peak column 116. As shown in fig. 9, the first parallel walls 112 prevent the printed circuit board W from passing through in a state where the side end surfaces thereof are bonded to the peak posts 116, and rotate the peak posts 116 to adjust the position of the printed circuit board W, so that the peak posts 116 are bonded to the upper surface or the bottom of the printed circuit board W, thereby adjusting the position of the printed circuit board W in the second step.

Specifically, as shown in fig. 4 to 7, the adjusting container 110 is provided with a turning area 113 on the side wall at the middle end thereof for facilitating the turning of the printed circuit board W. The middle of the peak pillar 116 is provided with a buffer groove 1162, and the buffer groove 1162 can hook the electronic components on the upper surface of the printed circuit board W attached to the peak pillar 166. The middle lower side end of the peak pillar 116 is provided with a recessed wall 1163, and the height of the recessed wall 1163 is lower than the upper end surface of the peak pillar 116, so that poor turning effect caused by insufficient height difference is prevented. The turning roller 117 is installed at the height difference position between the concave wall surface 1163 and the middle end surface of the peak column 116, the turning roller 117 is provided with a turning hook 1171, one end of the turning roller 117 is connected with one end of a turntable 1172, the other end of the turntable 1172 is provided with a force receiving rod 1173, the side end of the turntable 1172 is provided with a force application wheel 1174, the side end surface of the force application wheel 1174 is connected with a force application block 11741, the force application block 11741 is positioned on the side surface of the force receiving rod 1173, the surface of the force application wheel 1174 is connected with a bevel gear 1175, the side end of the bevel gear 1175 is provided with a control motor 1177, the control motor 1176 is meshed with the bevel gear 1175, the buffer groove 1162 and the turning roller 117 are positioned in the turning area 113. When the control motor 1177 is started, the force application block 11741 applies force to the force application rod 1173 intermittently, as shown in fig. 11, so that the turnover hook 1171 on the turnover roller 117 intermittently hooks and turns over the electronic components on the upper surface of the printed circuit board W, and the turnover hook 1171 is prevented from hooking the electronic components on the printed circuit board W and performing rotation movement. The other end of the turning roller 117 is provided with a rotating spring 1178, the rotating spring 1178 can reset the turning roller 117, and the printed circuit board W is prevented from moving downwards because the turning hook 1171 still hooks the electronic components of the printed circuit board W after turning the printed circuit board W. The reversing roller 117 effects the position adjustment of the printed circuit board W in the third step.

Specifically, as shown in fig. 8 and 10, the turning hook 1171 includes a pointed hook lower end surface 11711, and when the turning hook 1171 is in the vertical state, the pointed hook lower end surface 11711 is in the horizontal state, so as to prevent the pointed hook lower end surface 11711 from bending too much toward the body direction of the turning hook 1171, which may result in that the electronic component hooked by the turning hook 1171 on the printed circuit board W is not placed. The upper end dog-ear of upset hook 1171 is arc angle 11713, is equipped with bump 11712 on the arc angle 11713, bump 11712 horizontal height be higher than with upset hook 1171 up end, and it is rotatory to catch on printed circuit board W when upset hook 1171, and when rotatory certain degree, bump 11712 will form a fulcrum and overturn printed circuit board W, promotes the efficiency of upset greatly.

Specifically, as shown in fig. 5, the adjusting container 110 is provided with a second parallel wall 114 at a middle and lower end side wall thereof, the second parallel wall 114 is parallel to the recessed wall 1163 and is provided with a passage through which a single printed circuit board W can pass, so that the printed circuit board W is prevented from being turned over and separated from the peak post 116 in the downward sliding process due to external force such as debris or wind left by the peak post 116, the lower end of the peak post 116 is provided with a spiral chute 115, and the spiral chute 115 is located right below the recessed wall 1163 and can collect the printed circuit board W. The spiral chute 115 is inclined to prevent the pcb W from falling into the spiral chute 115 and turning over. The peak column 116 at the top end opening of the spiral slideway 115 is provided with a blocking body 118, the blocking body 118 can prevent the printed circuit board W from just falling into the top end opening of the spiral slideway 115 to cause the unbalanced gravity center to overturn, and the upper end of the blocking body 118 is in a sharp corner shape to prevent the printed circuit board W from being accumulated.

Specifically, as shown in fig. 1, 3, and 5, the bottom end of the spiral chute 115 is provided with an outlet, and the outlet is only sized to accommodate a single printed circuit board W to pass through, so as to prevent the printed circuit boards W from overlapping and affecting cutting. The bottom end face of the adjusting container 110 is connected with the upper end face of the base 11, the lower end face of the base 11 is connected with the external box 10, and a driving motor is arranged in the external box 10. The center of the lower end of the peak column 116 is provided with a rotating rod, the rotating rod passes through the bottom end of the adjusting container 110 and is connected with a driving motor in the external box 10, and the driving motor is connected with the PLC control system 8 through wired or wireless communication.

Example two:

specifically. As shown in fig. 1 and 13, the cutting mechanism 3 includes a tabbed saw blade 31, an upper pressure plate 33 and a bottom plate 34, and the tabbed saw blade 31 is disposed between the upper pressure plate 33 and the bottom plate 34 and fixedly connected by a fastener 32. Each upper pressure plate 33 corresponds to each saw blade 31 with a tongue, so that the saw blades 31 with the tongue can be replaced quickly. The multiple upper pressing plates 33 are attached to each other, pressing plate inner walls 331 are arranged in the center direction of the multiple upper pressing plates 33 towards the bottom plate 34, the center of the bottom plate 34 is connected with one end of the rotating motor, the side end of the rotating motor is attached to the pressing plate inner walls 331, and the contact area between the upper pressing plates 33 and the bottom plate 34 and the rotating motor is increased to increase stability. The other end of the rotating motor is connected with the bracket.

Specifically, as shown in fig. 14 and 15, the right end of the tabbed saw blade 31 is provided with a notch 313, and the notch 313 is used for eliminating stress, increasing the flexibility of the tabbed saw blade 31 and improving the resistance to vertical bending. The left end of the saw blade 31 with the tongue is provided with a stable area 311, the right end of the stable area 311 is provided with an inclined stable surface 312, the lower end of the gap 313 is provided with a transition area 314, the tongue part extending from the transition area 314 is higher than the saw blade 31 with the tongue, the tongue part extending from the transition area 314 is provided with a second interface 316, and the right end of the stable surface 312 is provided with a first interface 315. The first interface 315 of one of the tabbed saw blades 31 is aligned with the second interface 316 of the other tabbed saw blade 31 in the same vertical horizontal direction, the stabilizing surface 312 of one of the tabbed saw blades 31 is fitted with the right end surface of the transition region 314 of the other tabbed saw blade 31, and the end surface of the stabilizing region 311 of one of the tabbed saw blades 31 is fitted with the lower end surface of the notch 313 of the other tabbed saw blade 31, so that the transverse contact area of the two tabbed saw blades 31 is increased, the longitudinal rigidity is improved, and the strength of the whole cutting mechanism 3 is also increased. Securing two tabbed saw blades 31 with one fastener 32 via a first interface 315 of one tabbed saw blade 31 and a second interface 316 of the other tabbed saw blade 31 prevents multiple fasteners from being secured resulting in excessive mass affecting the tool acceleration/deceleration cycle speed variation, which in turn causes vibrations that may result in slower cutting speeds, resulting in less cutting efficiency. Also preventing the increased number of fasteners not only lengthens the time required for a saw blade to be replaced but also increases the complexity of manufacture and maintenance. Ultimately preventing more assembly time and labor.

Specifically, as shown in fig. 1 and 12, a water tank 9 is arranged at the upper end of the cutting mechanism 3, the water tank 9 is fixed on the support, and a tank cover 911 is arranged at the upper end of the water tank 9, so that water can be conveniently added. The lower end of the water tank is provided with a spraying head 910, and the spraying heads 910 are located at both sides of the cutting mechanism 3 and used for washing the electronic components cut off from the printed circuit board W by the cutting mechanism 3 to prevent the electronic components from remaining on the first conveying unit 2 to affect cutting. A small relay is arranged in the sprinkler head 910 and is connected with an electromagnetic valve, and the electromagnetic valve is connected with the PLC control system 8 in a wired or wireless mode.

Specifically, as shown in fig. 1, a blanking hopper is arranged below the first conveying unit 2 and used for collecting electronic components, a third conveying unit 12 is arranged in the blanking hopper, the third conveying unit 12 is driven by a third conveying motor, the third conveying motor is connected with the PLC control system 8 through wired or wireless communication, and the third conveying unit 12 is used for conveying the electronic components into the sundries collecting box 14 to be collected.

The remaining features and advantages of this embodiment are the same as those of the first embodiment.

Example three:

specifically, as shown in fig. 2, 16, and 17, the squeegee mechanism 5 includes a squeegee roller 51 and a position restricting roller 52, and the position restricting roller 52 is located directly above the squeegee roller 51 and is used for squeegeeing the printed circuit board W. The scraping and grinding mechanism 5 is provided with a first height 511 and a second height 512, the first height 511 is higher than the second height 512, the brush cutting head 513 is arranged between the first height 511, the bottom end part of the brush cutting head 513 is attached to the second height 512, the front end and the rear end of the brush cutting head 513 extend and are clamped in the first height 511, the right lower end of the brush cutting head 513 is provided with a reinforcing plate 514, the front end and the rear end of the reinforcing plate 514 are fixedly connected in the first height 511, the center of the reinforcing plate 514 is provided with a through hole, and the brush cutting head 513 is fixed by a fixing piece through the through. On the one hand, by the cooperation of the reinforcing plate 514 and the first level 511, the brush cutting head 513 can be securely fixed and during operation a large part of the stress of the brush cutting head 513 can be transmitted to the first level 511 to be eliminated, avoiding damage to the brush cutting head 513 and on the other hand facilitating replacement of the brush cutting head 513 by controlling the fixing member.

Specifically, as shown in fig. 17, the brush cutting head 513 is provided with a cutting edge 5131, the cutting edge 5131 is triangular, the cutting edge 5131 is tapered from the top end to the bottom end, and the angle formed by the two sides of the top end of the cutting edge 5131 is greater than 100 °, so that the rigidity of the top end of the cutting edge 5131 is enhanced, and higher impact force can be borne during operation. The cutting edge 5131 is positioned to correspond to the hole on the pcb W and the scrub roller 51 is positioned out of alignment before and after preventing the cutting edge 5131 from failing to correspond to the electronic component on the pcb W. A cutting head groove 5132 is formed between the cutting edges 5131, the cutting head groove 5132 being curved for guiding the solder away from the brush cutting head 513, which solder is then guided away from the scrub roller 51 by the second height 512 for facilitating collection of the solder.

Specifically, as shown in fig. 16 and 18, a rotating column 523 is disposed in the limiting roller 52, and an inclined elastic supporting column 524 is disposed around the rotating column 523 for preventing fatigue reduction during pressing of the elastic supporting column 524. A steel ring 522 is arranged between the rotating column 523 and the limiting roller 52, the elastic support column 524 is connected with the bottom end of the steel ring 522, the upper end of the steel ring 522 is connected with a limiting block 521, and the limiting block 521 penetrates through the limiting roller 52. When the limiting block 521 extrudes the printed circuit board W, the limiting block 521 retracts, the steel ring 522 is deformed under stress, the limiting blocks 521 at the left side and the right side move towards the direction of the printed circuit board W under the influence of the steel ring 522 until the printed circuit board W is clamped, the printed circuit board W is prevented from moving, and finally the scraping roller 51 is matched with the soldering tin at the bottom of the printed circuit board W to scrape.

Specifically, as shown in fig. 1, a collecting hopper is arranged under the scraping and grinding mechanism 5 and used for collecting soldering tin, a fourth conveying unit 13 is arranged in the collecting hopper, the fourth conveying unit 13 is driven by a fourth conveying motor, the fourth conveying motor is connected with the PLC control system 8 through wired or wireless communication, and the fourth conveying unit 13 is used for conveying the soldering tin to a soldering tin collecting box 15 and collecting the soldering tin.

The remaining features and advantages of this embodiment are the same as those of the embodiment.

Example four:

a method of recycling a printed circuit board, comprising the steps of:

a) placing the printed circuit board W into the opening of the adjusting mechanism 1;

b) guiding the printed circuit board W in the vertically downward direction to the arc surface of the hemisphere 1161 by gravity and sliding downward along the peak post 116 in the shape of a mountain peak;

c) the printed circuit board W with the lateral end surface of the printed circuit board W attached to the surface of the peak post 116 is prevented from moving downwards by an included angle formed by the inclined surface 111 facing the peak post and the peak post 116, and then the printed circuit board W with the lateral end surface of the printed circuit board W attached to the surface of the peak post 116 is adjusted to be a channel which is formed by the first parallel wall 112 and the peak post 116 and can only allow a single printed circuit board W to pass through, and continuously slides downwards by rotating the peak post 116;

d) the buffer groove 1162 of the peak post 116 hooks one side of the printed circuit board W attached to the peak post 116 with the electronic component, the flipping roller 117 hooks the other side of the printed circuit board W with the electronic component, and the height difference between the recessed wall 1163 and the surface of the peak post 116 is utilized to perform rapid and effective flipping, and then the printed circuit board W continues to slide downwards along the recessed wall 1163;

e) the printed circuit board W will fall into the spiral chute 115 and enter from the outlet onto the first transfer unit 2;

f) the first conveying unit 2 and the cutting mechanism 3 are matched to cut the electronic components on the printed circuit board W;

g) the printed circuit board W enters the conveying roller 4 from the first conveying unit 2 for buffering, then enters the scraping mechanism 5, and is scraped and ground by utilizing the mutual matching of the scraping roller 51 and the limiting roller 52;

h) the scraped printed circuit board W is transferred by the second transfer unit 6 to the picking mechanism 7 to scrape the electronic components on the printed circuit board W.

Specifically, the inversion roller 117 inverts in a intermittent manner.

Specifically, the spiral chute 115 is positioned in an inclined manner.

Specifically, the solder on the printed circuit board W of the first transporting unit 2 is fitted into the solder hole of the first transporting unit W.

Specifically, in step f), the sprinkler head 910 of the water tank 9 also sprays and cleans the electronic components remaining in the first transfer unit 2.

Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.

Claims (14)

1. A printed circuit board recycling apparatus, comprising:

an adjustment mechanism, adjustment mechanism is equipped with the export, adjustment mechanism includes:

the middle of the peak column is provided with a buffer groove;

the overturning roller is arranged at the lower end of the buffer tank and provided with a control motor;

the PLC control system is arranged at the side end of the adjusting mechanism;

a first transfer unit disposed outside the outlet;

the cutting mechanism is arranged on the first conveying unit;

at least one conveying roller arranged at the side end of the first conveying unit;

the scraping and grinding mechanism is arranged at the side end of the conveying roller;

a second conveying unit provided at a side end of the scraping mechanism;

the rolling and picking mechanism is arranged on the second conveying unit;

the adjusting mechanism further comprises an adjusting container, an opening is formed in the top end of the adjusting container, a space for containing the peak column is formed in the adjusting container, the peak column is arranged in the adjusting container, the peak column is in a mountain peak shape, the top end of the peak column is a hemisphere, and the peak column is located at the lower end of the opening; the printed circuit board falls onto the peak column from the opening, and under the gravity factor, the printed circuit board is guided from the hemispheroid to move along the lateral direction of the peak column, so that the printed circuit board is prevented from moving vertically downwards, and the primary position adjustment of the printed circuit board is realized; the side wall of the upper end in the adjusting container is provided with an inclined plane, and the inclined plane concentrates the printed circuit boards on the peak columns, so that the opening can accommodate more printed circuit boards; the side wall of the upper end in the adjusting container is provided with a first parallel wall which is parallel to the upper end surface of the peak column and is provided with a channel for a single printed circuit board to pass through; the bottom end face of the adjusting container is provided with a base, the adjusting container is connected with the upper end face of the base, the lower end face of the base is provided with an external box, the base is connected with the external box, a driving motor is arranged in the external box, the center of the lower end of the peak column is provided with a rotating rod, the two ends of the rotating rod are connected with the driving motor and the peak column, the driving motor is connected with the PLC control system through wired or wireless communication, the PLC control system controls the peak column to rotate to adjust the position where the side end face of the printed circuit board is attached to the peak column, so that the upper surface or the bottom of the printed circuit board is attached to the peak column, and the position adjustment of the printed circuit board in the second; the side wall of the middle end in the adjusting container is provided with a turnover area, and the buffer tank and the turnover roller are positioned in the turnover area, so that the printed circuit board can be conveniently turned over; a concave wall surface is arranged at the middle lower side end of the peak column, the height of the concave wall surface is lower than that of the upper end surface of the peak column, and the turnover roller is arranged at the height difference position between the concave wall surface and the middle end surface of the peak column; the side wall of the middle lower end in the adjusting container is provided with a second parallel wall, the second parallel wall is parallel to the sunken wall surface and is provided with a channel through which a single printed circuit board can pass, the lower end of the peak column is provided with a spiral slideway, and the spiral slideway is positioned right below the sunken wall surface and can collect the printed circuit boards; the spiral slideway is inclined, so that the printed circuit board is prevented from falling into the spiral slideway and turning over; the peak column is provided with a blocking body, the blocking body prevents a printed circuit board from just falling into the top opening of the spiral slideway, the top opening of the spiral slideway causes the gravity center unbalance to overturn, the upper end of the blocking body is in a closed angle shape, and the printed circuit board is prevented from being accumulated.

2. The printed circuit board recycling apparatus according to claim 1, wherein the reversing roller is provided with a reversing hook.

3. The printed circuit board recycling apparatus as claimed in claim 1, wherein the first transfer unit is provided with a solder hole; the first transmission unit is provided with a first transmission motor, and the first transmission motor is connected with the PLC control system through wired or wireless communication; the second transmission unit is provided with a second transmission motor, and the second transmission motor is connected with the PLC control system through wired or wireless communication.

4. The printed circuit board recycling device according to claim 1, wherein a rotating motor is provided in the cutting mechanism, a bracket is provided at a side end of the cutting mechanism, and the rotating motor is connected with the bracket.

5. The printed circuit board recycling device according to claim 1, wherein the scraping mechanism has a scraping cylinder and a limiting cylinder, the limiting cylinder is located right above the scraping cylinder, the limiting cylinder has elasticity, and the scraping cylinder has a sharp metal scraping head.

6. The printed circuit board recycling apparatus according to claim 1, wherein the picking mechanism is provided with pins, and the pins are located at positions corresponding to the holes on the printed circuit board.

7. The printed circuit board recovery device according to claim 2, wherein one end of the turnover roller is provided with a rotary disc, the other end of the rotary disc is provided with a force-applying rod, the side end of the rotary disc is provided with a force-applying wheel, the side end surface of the force-applying wheel is provided with a force-applying block, the force-applying block is positioned on the side surface of the force-applying rod, the surface of the force-applying wheel is provided with a bevel gear, the side end of the bevel gear is provided with a control motor, the control motor is provided with a circular gear, the circular gear is meshed with the bevel gear, and the control motor is connected; the control motor drives the force application block to intermittently apply force to the force bearing rod, so that the turnover hook is intermittently hooked and turnover adjustment is carried out on the electronic element on the upper surface of the printed circuit board, and the turnover hook is prevented from hooking the electronic element on the printed circuit board and not always rotating; the other end of the turnover roller is provided with a rotating spring, the rotating spring plays a role in resetting the turnover roller to prevent the turnover hook from still hooking electronic elements of the printed circuit board after the printed circuit board is turned over so as to prevent the printed circuit board from moving downwards, and the turnover roller realizes the position adjustment of the printed circuit board in the third step.

8. The printed circuit board recycling apparatus according to claim 3, wherein the first transfer unit is disposed on a first support frame, the second transfer unit is disposed between the first support frame and a second support frame, and the roll picking mechanism is further disposed on the second support frame.

9. The printed circuit board recycling apparatus of claim 5, wherein the roll picking mechanisms are disposed out of alignment at the same horizontal plane.

10. A method of recycling a printed circuit board, comprising the steps of:

a) placing the printed circuit board into the opening of the adjusting mechanism;

b) guiding the printed circuit board in the vertical downward direction to the cambered surface of the hemisphere by gravity and sliding downwards along the peak column in the shape of a mountain peak;

c) the printed circuit board with the side end face of the printed circuit board attached to the surface of the peak column is prevented from moving downwards by an included angle formed by the inclined face facing the peak column and the peak column, and then the printed circuit board with the side end face of the printed circuit board attached to the surface of the peak column is adjusted to be a channel which is formed by the first parallel wall and the peak column, is only provided for a single printed circuit board to pass through, and continuously slides downwards by rotating the peak column, wherein the upper surface or the bottom surface of the printed circuit board is attached to the peak column;

d) the buffer groove of the peak column hooks one side, with the electronic element, of the printed circuit board attached to the peak column, the overturning roller hooks the other side, with the electronic element, of the printed circuit board, the overturning roller quickly and effectively overturns the printed circuit board by utilizing the height difference between the sunken wall surface and the surface of the peak column, and then the printed circuit board continuously slides downwards along the sunken wall surface;

e) the printed circuit board falls into the spiral slideway and enters the first conveying unit from the outlet;

f) the first transfer unit and the cutting mechanism are configured to cooperate to cut electronic components on the printed circuit board;

g) the printed circuit board enters the conveying roller from the first conveying unit for buffering, then enters the scraping and grinding mechanism, and the scraping and grinding roller and the limiting roller are matched with each other to scrape and grind the soldering tin on the printed circuit board;

h) the scraped printed circuit board is conveyed to the rolling and picking mechanism by the second conveying unit to scrape and grind the electronic components on the printed circuit board.

11. The printed circuit board recycling method of claim 10, wherein the flipping roll flipping manner is a gap flipping.

12. The printed circuit board recycling method according to claim 10, wherein the spiral chute is positioned to be inclined.

13. The printed circuit board recycling method as set forth in claim 10, wherein the solder on the printed circuit board of the first transfer unit is embedded in the solder hole of the first transfer unit.

14. The printed circuit board recycling method of claim 10, wherein in the step f), the spray head of the water tank sprays and cleans the electronic components remaining in the first transfer unit.

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