CN110978790A

CN110978790A - Code spraying equipment for computer manufacturing

Info

Publication number: CN110978790A
Application number: CN201911348948.5A
Authority: CN
Inventors: 陈芊晶; 杨运来; 陈万钧; 张维玲; 赖薇
Original assignee: Jiangxi Environmental Engineering Vocational College
Current assignee: Jiangxi Environmental Engineering Vocational College
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-04-10
Anticipated expiration: 2039-12-24
Also published as: CN110978790B

Abstract

The invention discloses code spraying equipment for computer manufacturing, which comprises a feeding mechanism, a discharging mechanism, a code spraying machine, a fixing plate and a PCB (printed Circuit Board), wherein the feeding mechanism comprises a pair of feeding rollers, a bracket I, a conveying belt and a driving motor, the discharging mechanism comprises a discharging box, a baffle plate, a push plate and a driving mechanism for driving the push plate to horizontally move along the discharging box, the driving mechanism comprises a driving shaft fixed on the bracket II through a bearing, an incomplete driving gear fixed on the driving shaft and a rack driving plate matched with the incomplete driving gear, connecting rods are vertically fixed on two side walls of one end, close to the push plate, of the rack driving plate, and a limiting rod is vertically fixed at one end, far away from the rack driving plate, of each connecting rod. The problem that the PCB cannot be normally used due to abrasion on the surface of the PCB is avoided.

Description

Code spraying equipment for computer manufacturing

Technical Field

The invention relates to the technical field of computer manufacturing equipment, in particular to code spraying equipment for computer manufacturing.

Background

The computer is commonly called as computer, is a modern electronic computing machine for high-speed computation, can perform numerical computation and logic computation, and also has the function of storage and memory. The intelligent electronic device can be operated according to a program, and can automatically process mass data at a high speed. A computer that is composed of a hardware system and a software system and does not have any software installed is called a bare metal. The computer can be divided into a super computer, an industrial control computer, a network computer, a personal computer and an embedded computer, and more advanced computers comprise a biological computer, a photon computer, a quantum computer and the like.

Computer hardware refers to the general term for various physical devices in a computer system, including electronic, mechanical, and opto-electronic components. The physical devices form an organic whole according to the requirements of the system structure to provide a material basis for the operation of computer software. Briefly, the computer hardware functions to input and store programs and data, and to execute the programs to manipulate the data into a usable form. From the appearance, the microcomputer is composed of a main case and external equipment. The main case mainly comprises a CPU, an internal memory, a mainboard, a hard disk drive, an optical disk drive, various expansion cards, a connecting wire, a power supply and the like; the external devices include a mouse, a keyboard, and the like.

Need spout information sign such as traceable variable chinese-sensible code, two-dimensional code, bar code, digit, characters, pattern on the printed PCB board surface of mainboard in the manufacturing process of computer, at present, generally adopt the manual work to spout the sign indicating number to the mainboard, the mode that the manual work spouts the sign indicating number needs the workman to put into and take off the mainboard always, thereby lead to workman intensity of labour big, thereby can reduce and spout a yard efficiency, consequently need urgently to research and develop one kind can automatic blowing, can reduce workman intensity of labour, can improve the computer-building that spouts a yard efficiency and use spouts a yard equipment.

Patent grant publication No. is "CN 106903994B" discloses a code spraying equipment for computer manufacturing has solved above-mentioned problem, and this patent is through piling a wad of PCB board in the blowing device to move to the right through the L shaped board of establishing on the conveyor chain area and push the PCB board of bottom between two L shape fly leafs into the conveyor link joint, the PCB board moves to the right through the conveyor link joint, and when the PCB board moved to the right and reached ink jet numbering machine below, the ink jet numbering machine carries out the sign indicating number to the PCB board. However, the patent also has the following problems: for example, because unsmooth on the PCB board surface, the PCB board that is located the bottommost receives the pressure of its above-mentioned PCB board, on utilizing L shaped plate will push the PCB board of bottom between two L shape fly leafs into the transport link joint for the PCB board that is pushed away receives great frictional force, thereby leads to PCB board surface to produce wearing and tearing, and leads to the unable normal use of PCB board after spouting the sign indicating number.

Disclosure of Invention

The invention aims to provide code spraying equipment for computer manufacturing to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a code spraying device for computer manufacturing comprises a feeding mechanism, a discharging mechanism, a code spraying machine, a fixing plate and a PCB, wherein the feeding mechanism comprises a pair of feeding rollers, a first support, a first conveying belt and a driving motor, the feeding rollers are horizontally fixed on the first support through bearings, the two feeding rollers are in transmission connection through the conveying belts, one end of one of the feeding rollers is connected with an output shaft of the driving motor through a coupling, scraping plates are vertically fixed on the surface of the conveying belt at equal intervals, the fixing plate is located at one end of the conveying belt and is vertical to the conveying belt, the discharging mechanism is located right above the conveying belt and comprises a discharging box, a baffle plate and a push plate which are located at the left end and the right end of the discharging box and a driving mechanism for driving the push plate to horizontally move along the inside of the discharging box, the left end, the right end and the upper end of the discharging, and the port department of the end of the discharging box far away from the fixed plate is connected with the push plate in a sliding way, the driving mechanism comprises a driving shaft fixed on a second support through a bearing, an incomplete driving gear fixed on the driving shaft and a rack driving plate matched with the incomplete driving gear, one end of the rack driving plate close to the fixed plate is fixed on the side wall of the push plate, one end of the driving shaft is fixed with a second belt pulley, a first belt pulley is fixed on the feeding roller far away from one end of the fixed plate and the central rotating shaft end at the same end of the driving shaft, the first belt pulley is in transmission connection with the second belt pulley through a belt, the diameter of the first belt pulley is smaller than that of the second belt pulley, connecting rods are vertically fixed on the two side walls of the rack driving plate close to one end of the push plate, one end of the connecting rods far away from the, and one side of the limiting rod close to the side wall of the discharging box is vertically fixed with limiting lugs at equal intervals, the port of one end of the discharging box close to the fixed plate is connected with the baffle plate through a tensioning mechanism, the tensioning mechanism comprises a telescopic sleeve horizontally fixed on the fixed plate and a telescopic rod fixed in the telescopic sleeve through a fixed spring and connected with the telescopic sleeve in a sliding way, the free end of the telescopic rod is connected with the side wall of the baffle plate, the baffle plate is positioned at the free ends of the two limiting rods, and the limiting shifting pieces are fixed at the positions of the free ends of the two limiting rods through torsion springs, the limiting shifting sheet and the limiting convex block are overlapped along the length direction of the limiting rod, two connecting plates which are symmetrical relative to the telescopic sleeve are horizontally fixed below the telescopic sleeve by the fixing plate, and the one end that the fixed plate was kept away from to the connecting plate all is fixed with the arc slide, the free end of arc slide is located the top of conveyer belt, the bottom face that the discharge box was kept away from fixed plate one end is fixed with the ink jet numbering machine.

Preferably, a section of rack is arranged on the surface of the incomplete driving gear at equal intervals, and the distance between every two sections of racks and the length of the adjacent section of rack are equal to the distance for driving the conveying belt to travel when the belt pulley rotates for N (N is a natural number greater than 0) circles, which is equal to the distance between every two adjacent scraping plates.

Each section of the rack on the surface of the incomplete driving gear drives the rack driving plate to move to the thickness of the PCB plate in the rotating process.

Preferably, the distance between every two adjacent scraper plates is larger than the length of the PCB.

Preferably, the distance between the two arc-shaped sliding plates is smaller than the width of the PCB, and the scraping plate just passes between the two arc-shaped sliding plates in the process of moving along with the conveying belt and scrapes the PCB falling on the two arc-shaped sliding plates onto the conveying belt.

Preferably, the fixing plate is provided with a yielding hole for passing through.

Preferably, the distance between every two adjacent limiting lugs is smaller than the thickness of the PCB.

Compared with the prior art, the invention has the beneficial effects that:

(1) in the using process of the invention, a pile of PCBs are horizontally placed in the discharging box in sequence, the driving motor is started to enable the feeding roller to rotate anticlockwise, the conveying belt is horizontally conveyed leftwards under the action of the feeding roller, the feeding roller is in transmission connection with the driving shaft through the belt, the feeding roller drives the incomplete driving gear to rotate while rotating, meanwhile, the incomplete driving gear is matched with the rack driving plate, the incomplete driving gear drives the rack driving plate to move rightwards intermittently in the horizontal direction during the rotation process, the rack driving plate drives the limiting rod to move once, the pushing plate is driven to push all the PCBs placed in the discharging box to move rightwards horizontally along the discharging box, meanwhile, the PCBs push the baffle plate and overcome the fixed spring to move rightwards, at the moment, the right end opening of the discharging box is opened, and the PCBs fall from the left end opening of the discharging box to a track formed by the two arc-shaped sliding plates, when the PCB falls from the left port of the feeding box, the baffle immediately seals the right port of the feeding box under the action of the limiting shifting piece, when the rack driving plate moves once again, the PCB falling on the arc-shaped sliding plate is scraped on the conveying belt by the scraping plate positioned at the right end of the arc-shaped sliding plate in the process of moving left along with the conveying belt, and the next PCB also falls on the track formed by the two arc-shaped sliding plates.

(2) The blanking mechanism is positioned right above the conveying belt and comprises a material discharging box, a baffle plate and a push plate which are positioned at the left end and the right end of the material discharging box and a driving mechanism for driving the push plate to horizontally move along the material discharging box, the left end, the right end and the upper end of the material discharging box are in an open state, the port of one end, far away from the fixed plate, of the material discharging box is in sliding connection with the push plate, the driving mechanism comprises a driving shaft, an incomplete driving gear and a rack driving plate, the driving shaft is fixed on a support II through a bearing, the incomplete driving gear is fixed on the driving shaft, the rack driving plate is matched with the incomplete driving gear, sections of racks are arranged on the surface of the incomplete driving gear at equal intervals, the distance between each section of racks and the length of the adjacent section of rack are equal to the distance between every two adjacent scraping plates, and when the rack moves once When the track that the board formed for one of two adjacent scraping plates is located the left end of the PCB board that falls on the arc slide, and another is located the right-hand member of PCB board, when rack drive plate removed once more, the PCB board that falls on the arc slide was scraped the PCB board and falls on the conveyer belt along with the process that the conveyer belt moved left by the scraping plate that is located its right-hand member, and next PCB board also falls on the track that two arc slides formed, and at this moment, like this, one of two adjacent scraping plates is located the left end of the PCB board that falls on the arc slide, and another is located the right-hand member of PCB board.

(3) In the invention, connecting rods are vertically fixed on two side walls of one end of the rack driving plate close to the push plate, a limiting rod is vertically fixed at one end of the connecting rod far away from the rack driving plate, the limiting rod is positioned outside the side wall of the discharging box and is parallel to the side wall of the discharging box, limiting lugs are vertically fixed on one side of the limiting rod close to the side wall of the discharging box at equal intervals, limiting shifting pieces are fixed at the positions of the free ends of the two limiting rods of the baffle plate through torsional springs, the limiting shifting pieces and the limiting lugs are overlapped in the length direction of the limiting rods, the interval between every two adjacent limiting lugs is smaller than the thickness of the PCB plate, the limiting shifting pieces drive the baffle plate to reset (namely the baffle plate seals the opening at the right end of the discharging box again) under the action of the torsional springs, and the right end opening of the discharging box is sealed in time when the current PCB, prevent that the phenomenon from falling to other PCB boards that are located in the feed box.

In conclusion, the PCB is pushed to the right end of the discharging box through the mutual matching of the rack driving plate and the incomplete driving gear, the PCB in the discharging box is sequentially discharged from the discharging box under the matching of the limiting shifting piece and the baffle plate, the discharged PCB is scraped onto the conveying belt through the scraping plate and is subjected to code spraying, and in the discharging process, the friction force generated between the PCB and the PCB is very small or even negligible, so that the phenomenon that the PCB cannot be normally used due to the abrasion of the surface of the PCB is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a top view of the structure of the present invention;

FIG. 4 is an enlarged view of a portion of the structure at A in FIG. 2;

fig. 5 is an enlarged view of a portion of the structure at B in fig. 3.

In the figure: 1. a feed roller; 2. a conveyor belt; 3. an ink jet printer; 4. a scraping plate; 5. an arc-shaped sliding plate; 6. a drive motor; 7. a fixing plate; 8. fixing the spring; 9. a telescopic sleeve; 10. a connecting plate; 11. a telescopic rod; 12. a baffle plate; 13. a PCB board; 14. pushing the plate; 15. a rack drive plate; 16. a drive shaft; 17. an incomplete drive gear; 18. a limiting rod; 19. a connecting rod; 20. a limiting bump; 21. a hole of abdication; 22. a material placing box; 23. a limit shifting piece; 24. a first belt pulley; 25. and a second belt pulley.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, an embodiment of the present invention is shown: a code spraying device for computer manufacturing comprises a feeding mechanism, a discharging mechanism, a code spraying machine 3, a fixing plate 7 and a PCB 13, wherein the feeding mechanism comprises a pair of feeding rollers 1, a first support, a first conveying belt 2 and a driving motor 6, the feeding rollers 1 are horizontally fixed on the first support through bearings, the two feeding rollers 1 are in transmission connection through the first conveying belt 2, one end of one feeding roller 1 is connected with an output shaft of the driving motor 6 through a coupler, material scraping plates 4 are vertically fixed on the surface of the conveying belt 2 at equal intervals, the fixing plate 7 is positioned at one end of the conveying belt 2 and is perpendicular to the conveying belt 2, the discharging mechanism is positioned right above the conveying belt 2 and comprises a discharging box 22, a baffle plate 12 and a push plate 14 which are positioned at the left end and the right end of the discharging box 22 and a driving mechanism for driving the push plate 14 to horizontally move along the inside the discharging box 22, the left end, the right end and the upper end of the discharging box 22 are both in an open state, the port of one end, away from the fixed plate 7, of the discharging box 22 is in sliding connection with the push plate 14, the driving mechanism comprises a driving shaft 16 fixed on the second support through a bearing, an incomplete driving gear 17 fixed on the driving shaft 16 and a rack driving plate 15 matched with the incomplete driving gear 17, one end, close to the fixed plate 7, of the rack driving plate 15 is fixed on the side wall of the push plate 14, one end of the driving shaft 16 is fixed with a second belt pulley 25, the central rotating shaft end, away from the feed roller 1 at one end of the fixed plate 7 and at the same end with the driving shaft 16, of the first belt pulley 24 is fixed with a first belt pulley 24, the first belt pulley 24 is in transmission connection with the second belt pulley 25 through a belt, the diameter of the first belt pulley 24, and one end of the connecting rod 19 far away from the rack driving plate 15 is vertically fixed with a limiting rod 18, the limiting rod 18 is positioned outside the side wall of the discharge box 22 and is parallel to the side wall of the discharge box 22, one side of the limiting rod 18 close to the side wall of the discharge box 22 is vertically fixed with a limiting lug 20 at equal intervals, the port part of one end of the discharge box 22 close to the fixing plate 7 is connected with the baffle plate 12 through a tensioning mechanism, the tensioning mechanism comprises a telescopic sleeve 9 horizontally fixed on the fixing plate 7 and a telescopic rod 11 fixed in the telescopic sleeve 9 through a fixing spring 8 and in sliding connection with the telescopic sleeve 9, the free end of the telescopic rod 11 is connected with the side wall of the baffle plate 12, the positions of the baffle plate 12 at the free ends of the two limiting rods 18 are both fixed with a limiting shifting plate 23 through a torsion spring, and the limiting shifting plate 23 and the limiting lug 20 are overlapped in the, the torsion of torsional spring is greater than the biggest elasticity of fixed spring 8, fixed plate 7 is located the below level of telescope tube 9 and is fixed with two connecting plates 10 about telescope tube 9 symmetry, and the one end that fixed plate 7 was kept away from to connecting plate 10 all is fixed with arc slide 5, the free end of arc slide 5 is located the top of conveyer belt 2, the bottom face that fixed plate 7 one end was kept away from to blowing case 22 is fixed with ink jet numbering machine 3.

Further, the incomplete driving gear 17 is provided with a section of rack at equal intervals on the surface thereof, the distance between each section of rack and the length of the adjacent section of rack are equal to the distance between every two adjacent scraping plates 4 when the first belt pulley 24 rotates for N (N is a natural number greater than 0) circles, when the rack driving plate 15 moves once to make one PCB 13 positioned in the rightmost end of the discharge box 22 fall on the track formed by the two arc-shaped sliding plates 5, one of the two adjacent scraping plates 4 is positioned at the left end of the PCB 13 falling on the arc-shaped sliding plate 5, the other is positioned at the right end of the PCB 13, when the rack driving plate 15 moves once again, the PCB 13 falling on the arc-shaped sliding plate 5 is scraped on the conveying belt 2 by the scraping plate 4 positioned at the right end in the process of moving leftwards along with the conveying belt 2, and the next PCB 13 also falls on the track formed by the two arc-shaped sliding plates 5, and at this time, similarly, one of the two adjacent scraping plates 4 is positioned at the left end of the PCB 13 falling on the arc-shaped sliding plates 5, and the other one is positioned at the right end of the PCB 13, and the operation is repeated.

Further, each section of the rack driving plate 15 on the surface of the incomplete driving gear 17 moves by the thickness of the PCB 13 during the rotation, so that one PCB 13 located in the rightmost end of the material placing box 22 falls down to the track formed by the two arc-shaped sliding plates 5 every time the rack driving plate 15 moves.

Further, the distance between every two adjacent scraper plates 4 is greater than the length of the PCB 13, so that the PCB 13 finally falls on the conveyer belt 2 between the two adjacent scraper plates 4.

Further, the distance between the two arc-shaped sliding plates 5 is smaller than the width of the PCB 13, and the scraper plate 4 passes between the two arc-shaped sliding plates 5 exactly during the movement of the conveyor belt 2 and scrapes the PCB 13 falling on the two arc-shaped sliding plates 5 onto the conveyor belt 2.

Furthermore, the fixing plate 7 is provided with a yielding hole 21 for the limiting rod 18 to pass through, when the push plate 14 moves to the rightmost end of the material placing box 22, the limiting rod 18 also moves rightwards and passes through the yielding hole 21, so as to prevent the limiting rod 18 from being blocked by the fixing plate 7 in the process of moving rightwards.

Further, the distance between every two adjacent limiting convex blocks 20 is smaller than the thickness of the PCB 13, under the action of the torsion spring, the limiting shifting piece 23 drives the baffle 12 to reset (namely, the baffle 12 seals the opening at the right end of the material discharging box 22 again), and when a current PCB 13 falls from the right end opening of the material discharging box 22, the right end opening of the material discharging box 22 is sealed in time, so that the phenomenon that the rest of PCBs 13 located in the material discharging box 22 fall is prevented.

The working principle is as follows: when the PCB conveying device is used, an external power supply is switched on, a wad of PCBs 13 are sequentially horizontally placed in the discharging box 22, the driving motor 6 is started, the feeding roller 1 rotates anticlockwise, the conveying belt 2 is horizontally conveyed leftwards under the action of the feeding roller 1, the feeding roller 1 is in transmission connection with the driving shaft 16 through a belt, therefore, the feeding roller 1 drives the incomplete driving gear 17 to rotate while rotating, meanwhile, the incomplete driving gear 17 is matched with the rack driving plate 15, therefore, the incomplete driving gear 17 drives the rack driving plate 15 to move rightwards intermittently in the horizontal direction in the rotating process, the rack driving plate 15 drives the limiting rod 18 to move once, the pushing plate 14 is driven to push all PCBs 13 placed in the discharging box 22 to move rightwards horizontally along the discharging box 22, meanwhile, the PCBs 13 push the baffle 12 and overcome the fixing springs 8, at this time, the right port of the material placing box 22 is opened, the PCB 13 falls from the left port of the material placing box 22 to the track formed by the two arc-shaped sliding plates 5, and at this time, the limit poking pieces 23 fixed on both sides of the baffle plate 12 through the torsion spring are positively clamped on the two adjacent limit lugs 20, while the baffle plate 12 moves to the right to open the right port of the material box 22, so that the free ends of the limit poking pieces 23 incline in the process that the limit lugs 20 move along with the limit rods 18, because the distance between every two adjacent limit lugs 20 is less than the thickness of the PCB 13, when the distance that the limit rods 18 move is equal to the thickness of the PCB 13, the limit poking pieces 23 restore to the initial state under the action of the torsion spring, meanwhile, the limit poking pieces 23 enter into another limit groove formed by the gap between the two adjacent limit lugs 20, and meanwhile, because the torsion force of the torsion spring is greater than the maximum elastic, therefore, the baffle 12 is driven to reset under the action of the limit shifting sheet 23 (i.e. the baffle 12 seals the opening at the right end of the discharging box 22 again), when the previous PCB 13 falls from the right end opening of the discharging box 22, the right end opening of the material placing box 22 is sealed in time, so that the phenomenon that the rest of the PCB boards 13 positioned in the material placing box 22 topple over is prevented, when the rack driving board 15 moves once again, the PCB 13 dropped on the arc-shaped sliding plate 5 is scraped off the conveyor belt 2 by the scraper plate 4 at the right end thereof in the process of moving leftward with the conveyor belt 2, and the next PCB 13 is also dropped on the track formed by the two arc-shaped sliding plates 5, and at this time, similarly, one of the two adjacent scraping plates 4 is positioned at the left end of the PCB 13 dropped on the arc-shaped sliding plates 5, and the other is positioned at the right end of the PCB 13, the operation is repeated, and the PCB 13 falling on the conveyer belt 2 moves to the position of the code spraying machine 3 under the action of the conveyer belt 2 and carries out code spraying treatment.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a computer manufacturing is with spouting yard equipment, includes feeding mechanism, unloading mechanism, ink jet numbering machine (3), fixed plate (7) and PCB board (13), a pair of feed roller (1) that feeding mechanism includes, support one, conveyer belt (2) and driving motor (6), and feed roller (1) all fixes on support one through the bearing level, and connects through conveyer belt (2) transmission between two feed roller (1), one of them the output shaft of shaft coupling and driving motor (6) is passed through to the one end of feed roller (1), the equidistant vertical fixation in surface of conveyer belt (2) has scrapes flitch (4), its characterized in that: the fixed plate (7) is located at one end of the conveying belt (2), the fixed plate (7) is perpendicular to the conveying belt (2), the blanking mechanism is located over the conveying belt (2), the blanking mechanism comprises a material discharging box (22), a baffle plate (12) and a push plate (14) which are located at the left end and the right end of the material discharging box (22) and a driving mechanism used for driving the push plate (14) to horizontally move along the material discharging box (22), the left end and the right end and the upper end of the material discharging box (22) are both in an open state, a port opening of one end of the material discharging box (22), which is far away from one end of the fixed plate (7), is in sliding connection with the push plate (14), the driving mechanism comprises a driving shaft (16) fixed on a second support through a bearing, an incomplete driving gear (17) fixed on the driving shaft (16) and a rack driving plate (15) matched with the incomplete driving gear (17), and one end, which is close to, a second belt pulley (25) is fixed at one end of the driving shaft (16), a first belt pulley (24) is fixed at the end of the central rotating shaft far away from the feeding roller (1) at one end of the fixing plate (7) and at the same end with the driving shaft (16), the first belt pulley (24) is in transmission connection with the second belt pulley (25) through a belt, the diameter of the first belt pulley (24) is smaller than that of the second belt pulley (25), connecting rods (19) are vertically fixed on two side walls of one end, close to the push plate (14), of the rack driving plate (15), limiting rods (18) are vertically fixed at one end, far away from the rack driving plate (15), of the connecting rods (19), the limiting rods (18) are located outside the side walls of the material discharging box (22) and are parallel to the side walls of the material discharging box (22), and limiting lugs (20) are vertically fixed at equal intervals on one side, close to the side, the port department that the blowing case (22) is close to the one end of fixed plate (7) is connected with baffle (12) through straining device, straining device includes that the level is fixed telescopic tube (9) on fixed plate (7) and is fixed telescopic tube (9) and telescopic link (11) with telescopic tube (9) sliding connection through fixed spring (8), and the free end of telescopic link (11) is connected with the lateral wall of baffle (12), baffle (12) are located two the position department of gag lever post (18) free end all is fixed spacing plectrum (23) through the torsional spring, and spacing plectrum (23) and spacing lug (20) overlap on the length direction along gag lever post (18), fixed plate (7) are located the below level fixation of telescopic tube (9) and are all fixed with arc slide (5) about two connecting plate (10) of telescopic tube (9) symmetry, and the one end that fixed plate (7) were kept away from to connecting plate (10), the free end of the arc-shaped sliding plate (5) is positioned above the conveying belt (2), and an ink-jet printer (3) is fixed on the bottom end face of the discharging box (22) far away from one end of the fixing plate (7).

2. The code spraying equipment for computer manufacturing according to claim 1, wherein: the surface of the incomplete driving gear (17) is provided with a section of rack at equal intervals, and the distance between each section of rack and the length of the adjacent section of rack are equal to the distance between every two adjacent scraping plates (4) when the first belt pulley (24) rotates N (N is a natural number greater than 0) circles and drives the conveying belt (2) to walk.

3. The code spraying apparatus for computer manufacturing according to claim 1 or 2, wherein: each section of the surface of the incomplete driving gear (17) drives the thickness of the rack driving plate (15) to move away from the PCB (13) during the rotation process.

4. The code spraying equipment for computer manufacturing according to claim 1, wherein: the distance between every two adjacent scraper plates (4) is larger than the length of the PCB (13).

5. The code spraying equipment for computer manufacturing according to claim 1, wherein: the distance between the two arc sliding plates (5) is smaller than the width of the PCB (13), and the scraping plate (4) passes between the two arc sliding plates (5) in the moving process along with the conveying belt (2) and scrapes the PCB (13) falling on the two arc sliding plates (5) on the conveying belt (2).

6. The code spraying equipment for computer manufacturing according to claim 1, wherein: the fixed plate (7) is provided with a yielding hole (21) for the limiting rod (18) to pass through.

7. The code spraying equipment for computer manufacturing according to claim 1, wherein: the distance between every two adjacent limiting convex blocks (20) is smaller than the thickness of the PCB (13).