CN113601954A

CN113601954A - Multifunctional solder paste printer and control method thereof

Info

Publication number: CN113601954A
Application number: CN202110918595.9A
Authority: CN
Inventors: 刘华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2021-11-05

Abstract

The application relates to a multifunctional solder paste printer and a control method thereof. Feeding mechanism is including removing the track, the transportation area with press from both sides tight piece, remove the track setting at printing machine body lower extreme, the transportation area sets up in removing the track both sides, press from both sides tight piece setting between removing the track, printing mechanism includes the scraper, scrape the knife rest, the back shaft, flexible arm and support arm, the vertical setting of support arm is in printing machine body rear end, flexible arm one end and support arm fixed connection, other end swing joint back shaft upper end, the back shaft lower extreme sets up scrapes the knife rest, scraper swing joint scrapes on the knife rest. The utility model provides a multi-functional tin cream printing machine, can autoloading, can not cause the direct pinch-off circuit board of equipment and make the circuit board condition of scrapping because of the cardboard, the board problem falls among the pay-off process, can be at the clean steel mesh of operation in-process, improve printing efficiency.

Description

Multifunctional solder paste printer and control method thereof

Technical Field

The invention relates to the field of solder paste printers, in particular to a multifunctional solder paste printer and a control method thereof.

Background

With the rapid development of electronic manufacturing industry, many hand-held parts are changed from the original process to the automatic surface adhesion (SM) technology. The first stage of SMT is solder paste printing, in which two scrapers are provided in a typical printer, and after a circuit board enters the printer, the movement of the two scrapers causes solder paste on the circuit board to fill solder pads and plug-in holes of the circuit board. The existing circuit board is filled with tin by firstly coating tin paste on one side of a printing template of a steel plate, and the circuit board is attached below the steel plate and keeps a certain extrusion force with the steel plate. The scraper is lowered and abutted against the printing template, and the scraper slides to smear the solder paste on the circuit board through the gaps of the steel plates. Typically the scrapers are arranged in two sets and facing away from each other, so that 2 boards can be printed in one pass.

However, the current solder paste printing device is often used for too long time, when the solder paste printer prints the PCB, because the contact surface between the steel mesh and the PCB always has some tiny gaps, the tiny gaps can accumulate a little solder paste after multiple times of printing, and when the residual solder paste increases to a certain amount, the printing quality is affected, so the steel mesh needs to be cleaned. Although the existing solder paste printing equipment is provided with the cleaning system, the cleaning is often not in place, and in the actual production process, the machine needs to be stopped for manual cleaning or a steel mesh is removed and a special cleaning device is placed for cleaning, so that the use efficiency of the solder paste printing equipment is greatly reduced.

The automatic feeding mechanism commonly used by the existing solder paste printing equipment adopts belt transportation, but the belt is easy to wear and age after long-term use, so that the conditions of clamping plates and plate falling in the feeding process often occur, the circuit board of the clamping plate can be directly clamped and damaged in the clamping process after feeding is finished, the circuit board falling from the plate can be directly scrapped due to pollution usually, and the use efficiency and the yield of the equipment are seriously influenced. And the circuit board is only pressed by the rail, so that the middle of the circuit board falls and deforms, and the printing effect is influenced.

Therefore, there is a high necessity for a multifunctional solder paste printing machine which can effectively clean the belt during the operation of the solder paste printing machine and prevent the belt from being damaged due to the phenomena of jamming and dropping, and has a low yield.

The invention provides a multifunctional solder paste printing machine and a control method thereof, wherein a feeding mechanism is added, automatic feeding can be realized, the feeding mechanism is provided with a top block and an infrared sensor to prevent the situation that equipment directly clamps and breaks a circuit board to scrap the circuit board due to clamping and dropping of the circuit board in the feeding process, a cleaning mechanism is added, a steel mesh can be efficiently cleaned in the operation process, and the printing efficiency is improved.

Disclosure of Invention

The present invention is directed to a multifunctional solder paste printer and a control method thereof, which solve the problems of the background art mentioned above.

The invention provides the following technical scheme: a multifunctional solder paste printer comprises a printer body, wherein the printer body comprises a feeding mechanism, a printing mechanism, a fixed steel plate mechanism and a control center. The feeding mechanism comprises a moving track, a conveying belt and clamping blocks, the moving track is arranged at the lower end of the printer body, the conveying belt is arranged on two sides of the moving track, the clamping blocks are arranged on the moving track, and after the circuit board enters a position to be printed from the moving track, the circuit board is fixed by the clamping blocks and enters the position to be printed every time. Printing mechanism includes the scraper, scrape the knife rest, the back shaft, flexible arm and support arm, the vertical setting of support arm is in printing machine body rear end, flexible arm one end passes through screw fixed connection with the support arm, the other end pars contractilis passes through screw nut and connects the back shaft upper end, the back shaft lower extreme sets up scrapes the knife rest, the scraper passes through screw hole and screw movable mounting on scraping the knife rest, the edge of a knife is downward, the back shaft is the telescopic link, inside sets up linear electric motor, the circuit board gets into the position after, press from both sides tightly and fixed steel mesh by fixed steel sheet mechanism, by feeding mechanism fixed circuit board, evenly scribble the tin cream in advance and scribble in steel mesh one side, the scraper is along with the back shaft downstream and steel mesh contact earlier, again by flexible wall drive scraper back-and-forth movement scribble the tin cream to the circuit board on. The fixed steel plate mechanism comprises a steel plate rail and an electromagnetic valve, the steel plate rail is horizontally arranged at the upper end of the feeding mechanism, a steel mesh which needs to be used by the solder paste printing machine is inserted into the fixed steel plate mechanism from between the two steel plate rails, and when the solder paste printing machine is started, the electromagnetic valve is started to clamp the steel mesh and automatically position the circuit board through a control center. The feeding mechanism, the printing mechanism and the fixed steel plate mechanism are electrically connected with the control center.

Further, feeding mechanism still includes kicking block and pay-off base, and the removal track includes track A and track B, and the pay-off base sets up between track A and track B, and printing machine body lower extreme sets up the track, the fixed setting on the pay-off base of track A lower extreme, and track B lower extreme sets up the axis of rotation, and the axis of rotation lower extreme runs through and sets up lead screw A, and lead screw A connects electric putter, and lead screw A activity sets up at printing machine body rear end, rotates in the axis of rotation through lead screw A, makes the axis of rotation drive track B back-and-forth movement, can adjust the interval between track A and the track B to make the circuit board of different width can both get into feeding mechanism, before using the tin cream printing machine at every turn, according to the circuit board size that needs printed, set for the distance between track A and the track B. One end of the feeding base is movably connected with the printer body through a screw B, two sides of the lower end of the feeding base are movably connected with the printer body through tracks, and the screw B can drive the feeding base and the tracks of the tracks A on the printer body to move left and right so as to bring the circuit board into and out of the printer body. The jacking block is arranged on the upper surface of the feeding base, the telescopic cylinder is arranged between the jacking block and the feeding base, the jacking block is used for fixing the circuit board, a gap exists between the circuit board and the steel mesh in order to enable the circuit board to smoothly enter the printing machine body, and the jacking block can enable the circuit board to be in direct contact with the steel mesh in a jacking mode. When the scraper smears the solder paste on the circuit board, the scraper can generate downward force on the steel mesh, so that the circuit board deforms, the solder paste is unevenly printed, the top block moves upwards in the process of solder paste printing, the circuit board is supported by the top pressure to reduce deformation, and the solder paste is evenly smeared. The kicking block still has the condition that prevents that the circuit board from falling the board and scrapping promptly, when dropping from removing the track because of the unexpected condition circuit board, can fall on the kicking block, can reprint after taking out this moment, can directly not scrap.

Further, electric putter passes through synchronous machine A and printing machine body swing joint, lead screw B passes through synchronous machine B and printing machine body swing joint, synchronous machine A rotates with synchronous machine B is used for making track A and track B remove about in step, track A sets up synchronous pivoted transportation area with track B, set up motor C and connecting axle in the removal track, two transportation areas are twined respectively in series on track A and track B, track A and track B are inside and both ends set up a rotation wheel respectively, wherein the both ends of connecting axle are connected to inside two rotation wheel sides, motor C sets up on the connecting axle, motor C drives two transportation areas simultaneously and rotates in step.

Further, both ends set up two openings about the printing machine body, and the opening upper end sets up infrared sensor for whether detect printing plate get into the printing machine body completely, track A and track B are controlled both ends and are all outwards extended, can extend to the opening part, so that the circuit board can get into smoothly in the removal track. The circuit board both can follow the left end and get into, and the right-hand member is walked out, also can the right-hand member get into, and the left end is walked out, judges by infrared sensor whether the circuit board gets into this internally of printing machine completely, and if the circuit board does not get into this internally of printing machine completely, the kicking block does not move, avoids appearing the cardboard phenomenon.

Further, the kicking block includes camera, linear electric motor, printing module and camera track, and the kicking block is transparent material, and the camera is installed on linear electric motor, and linear electric motor installs in the camera track, and the camera track is installed inside the kicking block, and the camera includes the flash light. After the circuit board completely enters the feeding mechanism, the flash lamp is started by the camera, the flash lamp moves along with the linear motor, identification points on the circuit board and the steel mesh are found and fed back to the control center, and after the control center determines the positions of the circuit board and the steel mesh, the printing mechanism is controlled to print solder paste on the circuit board, so that the positioning precision is high, the phenomenon of printing missing is avoided, and the printing offset phenomenon is reduced. The printing module is movably mounted at the upper end of the top block, a groove for avoiding the position of the circuit board is hollowed on the upper surface of the top block, the printing module is made of transparent materials, the circuit board is often fixedly placed on the moving track by using a clamp in the actual use process, the lower surface of the circuit board is uneven, the clamp or the circuit board is damaged by the top block, the printing module is mounted at the upper end of the top block and is used for avoiding the position of a protrusion at the lower end of the clamp or the circuit board, the top block is in complete contact with the circuit board, and the fixing and the printing of the circuit board are facilitated.

Further, the printing machine body comprises a cleaning mechanism, and the cleaning mechanism comprises a box body, a water conveying pipe, a water valve, a conveying pipe, a cleaning shaft, a liquid level sensor, a cantilever, a motor and a moving shaft. The box sets up in printing machine body one side to set up the opening, whole clean mechanism only opening part expose outside printing machine body, and all the other parts are all built-in at printing machine this internally, and the cleaning solution is poured into through the opening to the operator, and the box sets up alarm line and minimum alarm line, adds the cleaning solution in order reminding the operator. Raceway one end is connected with the bottom half, and the other end and duct connections, the water valve setting is at the raceway entry, and the vertical setting of level sensor is in the box, and the conveyer pipe level sets up below fixed steel sheet mechanism front end, and the clean paper is established to conveyer pipe surface cover, and clean paper twines at conveyer pipe and clean epaxial, and it has a plurality of aperture to open on the conveyer pipe, and the aperture slope makes progress, faces the clean paper between conveyer pipe and the clean axle, and the cleaning solution passes through the conveyer pipe and shoots on clean paper to one side, clean axle setting is in the conveyer pipe rear end, and clean axle both ends set up the bearing and remove the hub connection, and one end setting is from passing motor, and from passing motor rotates and drives clean axle, and clean axle drives clean paper, and clean paper is soaked by the cleaning solution this moment to enter the working face. The cantilever is connected and is moved the axle setting at printing machine body front end, set up vertical cylinder between cantilever and the printing machine body for drive clean axle around and reciprocate, clean mechanism and control center electric connection. The cantilever drives the cleaning shaft to press against the steel mesh, and then the cleaning shaft moves back and forth to clean the steel mesh surface with the cleaning paper.

Further, clean mechanism is including removing axle A, clean axle A, conveyer pipe A and removal axle B, clean axle B, conveyer pipe B, remove axle A, clean axle A and conveyer pipe A set up below fixed steel sheet mechanism, remove axle B, clean axle B and conveyer pipe B set up more than fixed steel sheet mechanism, it is connected with the cantilever to remove axle A one end, the other end is connected with clean axle A, conveyer pipe A level sets up in removing the oblique below of axle A, and parallel with the scraper, it is fixed to set up in the cantilever upper end to remove axle B one end, the other end is connected with clean axle B, conveyer pipe B level sets up in removing the oblique top of axle B. The cleaning shaft A and the cleaning shaft B are respectively provided with a self-transmission motor which can move synchronously, and the moving shaft A and the moving shaft B are electrically connected with the control center. Through setting up two synchronous movement's clean mechanism, clean the upper and lower surface of steel mesh simultaneously, make the steel mesh clean ground more thorough, improved the printing yield.

Further, remove and set up link gear between axle A and the removal axle B, link gear includes fixed block A, fixed block B, rack strip, gear A, gear B, pivot and motor D, fixed block A cover establish on the left end rack area and with removal axle A fixed connection, fixed block B cover establish on the right-hand member rack area and with removal axle B fixed connection, rack strip cover is established on gear A and gear B, gear A side fixed connection pivot, motor D is connected in the pivot, motor D and control center swing joint. Remove axle A and fixed block A fixed connection on vertical track board, remove axle B and fixed block B fixed connection on vertical track board, vertical track board one side sets up the track, and fixed block A and fixed block B one end set up in the track to can remove in the track, vertical track board is fixed on the printing machine body. The fixed block A and the fixed block B respectively drive the moving shaft A and the moving shaft B to move on the vertical track plate in opposite directions so as to realize the functions of clamping the steel mesh and separating the steel mesh by the two cleaning mechanisms.

Further, the printing machine body includes alarm and display, and the alarm includes green display lamp, red display lamp and bee calling organ, and green display lamp, the vertical range of red display lamp are as a whole, and the red display lamp is under last, green display lamp, and fixed mounting is in printing machine body upper end, and bee calling organ sets up in red display lamp upper end. When the solder paste printing machine normally works, the green display lamp is normally on, when the solder paste printing machine is abnormal, the red display lamp is normally on, and the buzzer gives an alarm. When the cleaning solution is not enough to be less than the warning line in clean mechanism, red display lamp scintillation, bee calling organ sounds, and the tin cream printing machine need not shut down this moment, treats that the operator adds the cleaning solution after, and green display lamp is bright often, and bee calling organ stops, if clean liquid level is less than minimum warning line, still does not add the cleaning solution, then automatic shutdown after the current circuit board printing of control center control is finished, alarm and control center electric connection. The display is a touch screen display, is electrically connected with the control center and is used for inputting parameters of the printing machine.

A control method of a multifunctional solder paste printer comprises the following steps:

any one of the two openings is used as an inlet, the other one is used as an outlet, an infrared sensor A is arranged at the inlet, and an infrared sensor B is arranged at the outlet;

the judgment method of the top block action comprises the following steps:

when the circuit board enters the printer body from the inlet, the infrared sensor A detects that a board enters, after the circuit board completely enters the printer body, the infrared sensor A cannot detect that the circuit board exists at the inlet, the track A and the track B drive the circuit board to a printing position, when the camera recognizes that the board is located at the printing position, the ejector block moves upwards to jack the circuit board, and the printing mechanism starts a printing process;

if the infrared sensor A detects that a board enters and the camera recognizes that the board is positioned at the printing position, the alarm gives an alarm, and the top block does not act;

if the infrared sensor A detects that the plate enters for more than the set time, the alarm gives an alarm, and the top block does not act.

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

1. increase feeding mechanism, can autoloading, feeding mechanism sets up kicking block and infrared ray sensor and can prevent that the pay-off in-process from leading to the fact the cardboard, fall the board and cause the direct pinch-off circuit board of equipment to lead to the fact the condition of scrapping, the kicking block can support the circuit board, even if the circuit board drops because of accident, also can fall on the kicking block, can carry out the printing procedure again after taking out, feeding mechanism sets up the derailment of two removals, circuit board that can compatible not unidimensional gets into the printing machine body, and both ends opening all can regard as the access & exit, convenient operation.

2. The kicking block material is transparent material, and sets up the camera, can detect whether the circuit board reachs the assigned position, prevents printing skew and hourglass seal.

3. Two cleaning mechanisms are added, so that the upper surface and the lower surface of the steel mesh can be cleaned in the operation process, and the printing efficiency and the yield are improved.

4. Clean mechanism is built-in at the printing machine body, and sets up level sensor, conveniently adds the cleaning solution to when the cleaning solution is not enough, in time report to the police and remind the operator to add, if the cleaning solution is not in time added, equipment automatic shutdown prevents that the steel mesh stifled hole from causing a large amount of defective products.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a multi-function solder paste printer of the present invention;

FIG. 2 is a schematic view of a multifunctional solder paste printer having a first cleaning mechanism according to the present invention;

FIG. 3 is a schematic view of a second cleaning mechanism of the multifunctional solder paste printer of the present invention;

in the figure: 1. the printing machine comprises a printing machine body, 201, a top block, 202, a feeding base, 203, rails A, 204, rails B, 205, a rotating shaft, 206, a screw A, 207, an electric push rod, 208, a screw B, 209, a telescopic cylinder, 210, a camera, 301, a scraper, 302, a scraper frame, 303, a supporting shaft, 304, a telescopic arm, 305, a supporting arm, 401, a box body, 402, a water pipe, 403, a conveying pipe, 404, a cleaning shaft, 405, a cantilever, 406, a moving shaft, 501, a moving shaft A, 502, a cleaning shaft A, 503, a conveying pipe A, 601, a moving shaft B, 602, a cleaning shaft B, 603, a conveying pipe B, 701, a fixed block A, 702, a fixed block B, a rack belt, 704, a gear A, 705, a gear B, 706, a vertical rail plate, 8, a steel mesh, 9 and a circuit board.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the invention discloses a multifunctional solder paste printer which comprises a printer body 1, wherein the printer body 1 comprises a feeding mechanism, a printing mechanism, a steel plate fixing mechanism and a control center. The lower end of the printer body is provided with a left-right track, the feeding mechanism comprises a moving track, a conveying belt, a clamping block, a top block 201 and a feeding base 202, the moving track comprises a track A203 and a track B204, and the feeding base 202 is arranged between the track A203 and the track B204. The clamping blocks are arranged at the position, close to the conveyor belt, of the moving track, and the circuit board 9 is fixed by the clamping blocks after entering the position to be printed from the moving track. The lower end of the track A203 and the feeding base 202 are welded into a whole, the lower end of the track B204 and the rotating shaft 205 are welded into a whole, the lower end of the rotating shaft 205 is connected with the lead screw A206 in a penetrating mode, the lead screw A206 can rotate in the rotating shaft 205, the rotating shaft 205 is internally provided with a rotating motor used for enabling the lead screw A206 to transmit automatically, the tail end of the lead screw A206 is connected with the electric push rod 207, and the electric push rod 207 is arranged at the rear end of the printer body 1 through the track. The lead screw A206 rotates on the rotating shaft 205, so that the rotating shaft 205 drives the track B204 to move back and forth, the interval between the track A203 and the track B204 can be adjusted, circuit boards 9 with different widths can enter the feeding mechanism, and the distance between the track A203 and the track B204 is set according to the size of the circuit board 9 to be printed before the solder paste printer is used every time. The electric push rod 207 can drive the track B to move left and right, so that the circuit board 9 can be accessed. The left end of the feeding base 202 is movably connected with the printer body 1 through a lead screw B208, two sides of the lower end of the feeding base 202 are movably connected with the printer body 1 through a track, and the lead screw B208 can drive the feeding base 202 and the track A203 to move left and right on the track of the printer body 1 so as to bring the circuit board 9 into and out of the printer body 1.

The top block 201 is arranged on the upper surface of the feeding base 202, the telescopic cylinder 209 is arranged between the top block 201 and the feeding base 202, the top block 201 is used for fixing the circuit board 9, a gap exists between the circuit board 9 and the steel mesh 8, and the top block 201 presses the circuit board 9 to enable the circuit board 9 to be in direct contact with the steel mesh 8. When the scraper 301 smears the solder paste on the circuit board 9, the scraper 301 generates a downward force on the steel mesh 8, so that the circuit board 9 deforms, the solder paste is unevenly printed, the top block 201 moves upwards in the process of solder paste printing, the top block supports the circuit board 9 to reduce deformation, and the solder paste can be smeared uniformly. The top block 201 also has the function of preventing the circuit board 9 from falling off the board, namely being scrapped, and the circuit board 9 can fall on the top block 201 when falling off from the moving track due to an accident condition, and can be reprinted after being taken out at the moment, so that the circuit board can not be directly scrapped due to the falling off and damage from the moving track.

The printing mechanism includes a doctor blade 301, a doctor blade holder 302, a support shaft 303, a telescopic arm 304, and a support arm 305. The support arm 305 is vertical to pass through the fix with screw in printing machine body 1 rear end, telescopic boom 304 one end passes through screw nut fixed connection with support arm 305, the flexible part of the other end passes through screw nut fixed connection back shaft 303 upper end, back shaft 303 lower extreme sets up scrapes knife rest 302, scraper 301 passes through screw hole and screw activity fixation on scraping knife rest 302, the edge of a knife is down, one scrapes knife rest 302 and can set up two scraper 301 dorsad, regard as preceding scraper and back scraper respectively, be used for the printing of round trip in-process. Back shaft 303 is the telescopic link, and inside sets up linear electric motor, treats that printed circuit board 9 gets into the position after, by the fixed steel mesh 8 of fixed steel sheet mechanism, the solder paste evenly paints in steel mesh 8 one side in advance, scraper 301 along with back shaft 303 downstream earlier with the contact of steel mesh 8, again by flexible wall drive scraper 301 back-and-forth movement paint the solder paste to circuit board 9 on. The fixed steel plate mechanism comprises a steel plate rail and an electromagnetic valve, the steel plate rail is horizontally arranged at the upper end of the feeding mechanism, a steel mesh 8 which needs to be used by the solder paste printing machine is inserted into the fixed steel plate mechanism from between the two steel plate rails, and when the solder paste printing machine is started, the electromagnetic valve is started to clamp the steel mesh 8 and automatically position the circuit board 9 through a control center. The feeding mechanism, the printing mechanism and the fixed steel plate mechanism are electrically connected with the control center.

Electric putter 207 passes through synchronous machine A and printing machine body 1 swing joint, lead screw B208 passes through synchronous machine B and printing machine body 1 swing joint, synchronous machine A rotates with synchronous machine B is synchronous, be used for making track A203 and track B204 remove about in step, track A203 and track B204 set up synchronous pivoted transportation area, set up motor C and connecting axle in the removal track, two transportation areas are twined respectively on track A203 and track B204 in series, track A203 and track B204 are inside and both ends set up a rotation wheel respectively, wherein the both ends of connecting axle are connected to two inside rotation wheel sides, motor C sets up on the connecting axle, motor C drives two transportation areas synchronous rotations simultaneously.

Both ends set up two openings about printing machine body 1, and the opening upper end sets up infrared sensor for whether detect printing plate get into printing machine body 1 completely, track A203 and track B204 are controlled both ends and are all outwards extended, can extend to the opening part, so that circuit board 9 can get into smoothly in the removal track. Circuit board 9 both can follow the left end and get into, and the right-hand member is walked out, also can the right-hand member get into, and the left end is walked out, judges by infrared sensor whether circuit board 9 gets into printing machine body 1 completely in, if circuit board 9 does not get into printing machine body 1 completely, kicking block 201 does not move, avoids appearing the cardboard phenomenon.

The kicking block 201 comprises a camera 210, a linear motor and a camera 210 track, the kicking block 201 is made of transparent materials, the camera 210 is installed on the linear motor, the linear motor is installed in the camera 210 track, the camera 210 track is horizontally installed inside the kicking block 201, and the spread angle of the camera 210 can detect the circuit board 9 identification points within the width range of 210 mm. The camera 210 includes a flash. After the circuit board 9 completely enters the feeding mechanism, the camera 210 moves along with the linear motor, the flash lamp is started to search for identification points on the circuit board 9 and the steel mesh 8 and feed the identification points back to the control center, and after the control center determines the positions of the circuit board 9 and the steel mesh 8, the printing mechanism is controlled to print solder paste on the circuit board 9, so that the positioning precision is high, the phenomenon of printing missing is avoided, and the printing offset phenomenon is reduced. Printing module movable mounting has the recess that circuit board 9 kept away the position at kicking block 201 upper end, its upper surface fretwork, and its material is transparent, because in the in-service use, circuit board 9 often uses the fixed putting on the removal track of anchor clamps, and its lower surface is unsmooth, in order to prevent that kicking block 201 from damaging anchor clamps or circuit board 9, install printing module at kicking block 201 upper end, printing module keeps away the position for the protruding thing of anchor clamps or circuit board 9 lower extreme, make kicking block 201 and the complete surface contact of circuit board 9, be favorable to the fixed of circuit board 9 and print.

The printer body 1 includes a cleaning mechanism, as shown in fig. 2, and one cleaning mechanism includes a tank 401, a water duct 402, a water valve, a duct 403, a cleaning shaft, a level sensor, a cantilever 405, a motor, and a moving shaft 406. Box 401 sets up in printing machine body 1 one side to set up the opening, whole clean mechanism only opening part expose outside printing machine body 1, and all the other parts are all built-in printing machine body 1, and the operator pours the cleaning solution into through the opening, and the cleaning solution is alcohol solution. An alarm line and a minimum alarm line are provided on the inner wall of the cabinet 401 to remind an operator to add cleaning liquid. Raceway 402 one end is connected with the box 401 bottom, the other end is connected with conveyer pipe 403, the water valve setting is at raceway 402 entry, level sensor is vertical to be set up in box 401, conveyer pipe 403 level sets up below fixed steel sheet mechanism front end, conveyer pipe 403 overcoat establishes the cleaning paper, the cleaning paper cluster is around conveyer pipe 403 and clean epaxially, open 18 evenly distributed's aperture on conveyer pipe 403, the aperture slope is upwards, facing to the cleaning paper between conveyer pipe 403 and the clean axle, the cleaning solution passes through conveyer pipe 403 oblique incidence on the cleaning paper, the cleaning axle sets up at conveyer pipe 403 rear end, the cleaning axle both ends set up the bearing and are connected with removal axle 406, one end sets up the biography motor, the motor that biography rotates drives the cleaning axle, the cleaning paper is driven to the cleaning paper, the cleaning paper is soaked the cleaning solution this moment, and enter the working face. Cantilever 405 is connected and is moved axle 406 setting at printing machine body 1 front end, set up vertical cylinder between cantilever 405 and the printing machine body 1 for drive clean axle around and reciprocate, clean mechanism and control center electric connection. The cantilever 405 drives the cleaning shaft to press against the steel mesh 8, and then the cleaning shaft moves back and forth to clean the steel mesh surface with the cleaning paper.

As shown in fig. 3, another cleaning mechanism includes a moving axis a501, a cleaning axis a502, a delivery pipe a503, a moving axis B601, a cleaning axis B602, and a delivery pipe B603, the moving axis a501, the cleaning axis a502, and the delivery pipe a503 are disposed below a fixed steel plate mechanism, the moving axis B601, the cleaning axis B602, and the delivery pipe B603 are disposed above the fixed steel plate mechanism, one end of the moving axis a501 is connected to the cleaning axis a502, the delivery pipe a503 is horizontally disposed obliquely below the moving axis a501 and parallel to the scraper 301, one end of the moving axis B601 is connected to the cleaning axis B602, and the delivery pipe B603 is horizontally disposed obliquely above the moving axis B601. The water delivery pipe a503 and the water delivery pipe B603 are both fixedly connected to the printer body 1 and share one box 401. The cleaning shaft A502 and the cleaning shaft B602 are respectively provided with a self-transmission motor which moves synchronously, and the moving shaft A501 and the moving shaft B601 are electrically connected with the control center. Through setting up two synchronous movement's clean mechanism, clean the upper and lower surface of steel mesh 8 simultaneously, make steel mesh 8 clean more thoroughly, less tin cream remains the influence to the printing effect, has improved the printing yield.

A linkage mechanism is arranged between the moving shaft A501 and the moving shaft B601 and comprises a fixed block A701, a fixed block B702, a rack belt 703, a gear A704, a gear B705, a rotating shaft and a motor D, the fixed block A701 is sleeved on the left end rack belt 703 and is fixedly connected with the moving shaft A501, the fixed block B702 is sleeved on the right end rack belt 703 and is fixedly connected with the moving shaft B601, the rack belt 703 is sleeved on the gear A704 and the gear B705, the side surface of the gear A704 is fixedly connected with the rotating shaft, the rotating shaft is connected with the motor D, and the motor D is movably connected with a control center. Move axle A501 and fixed block A701 fixed connection on vertical track board 706, move axle B601 and fixed block B702 fixed connection on vertical track board 706, vertical track board 706 one side sets up the track, fixed block A701 sets up in the track with fixed block B702 one end to can remove in the track, vertical track board 706 is fixed on printer body 1. The fixed blocks a701 and B702 respectively drive the moving shafts a501 and B601 to move on the vertical track plate 706 in opposite directions, so as to realize the functions of clamping the steel mesh 8 and separating the cleaning mechanisms by the two cleaning mechanisms.

Printing machine body 1 includes alarm and display, and the alarm includes green display lamp, red display lamp and bee calling organ, and green display lamp, the vertical range of red display lamp are as a whole, and the red display lamp is under last, green display lamp, and fixed mounting is in 1 upper end of printing machine body, and bee calling organ sets up in red display lamp upper end. When the solder paste printing machine normally works, the green display lamp is normally on, when the solder paste printing machine is abnormal, the red display lamp is normally on, and the buzzer gives an alarm. When the cleaning solution is not enough to be less than the warning line in clean mechanism, red display lamp scintillation, the buzzer sounds, and the tin cream printing machine need not shut down this moment, treats that the operator adds the cleaning solution after, and green display lamp is bright often, and the buzzer stops, if clean liquid level is less than minimum warning line, still does not add the cleaning solution, then automatic shutdown, alarm and control center electric connection after 9 prints the end of current circuit board of control center control. The display is a touch screen display, is electrically connected with the control center and is used for inputting parameters of the printing machine.

The working principle is as follows:

1. an operator sets printing parameters on the touch screen display in advance according to product requirements, before the solder paste printing machine is used, alcohol solution is added according to the readings of the liquid level sensor, the steel mesh 8 and cleaning paper are installed, solder paste is uniformly coated at the front end of the steel mesh 8, the gap between the track A203 and the track B204 is adjusted, so that the circuit board 9 can smoothly enter the printing machine body 1, and the cleaning mode is set as one-board one-wiping;

2. the circuit board 9 is conveyed to the moving track, the lead screw B208 and the electric push rod 207 move synchronously, the transport belt at the upper ends of the track A203 and the track B204 drives the circuit board 9 to move to the position under the steel mesh 8, and the camera 210 respectively identifies the circuit board 9 and the identification points of the steel mesh 8 for positioning;

3. if the positioning is successful, the control center control support shaft 303 drives the scraper 301 to be downward attached to the steel mesh 8, the telescopic cylinder 209 is controlled to drive the top block 201 to press the circuit board 9 upwards, the circuit board 9 is attached to the steel mesh 8, then the telescopic arm 304 is controlled to drive the rear scraper 301 to move backwards, solder paste is coated on the circuit board 9, then the control center control telescopic cylinder 209 drives the top block 201 to move downwards, and the circuit board 9 is transported out of the printing machine body 1 along with the moving track;

4. the control center firstly controls the cleaning shaft A502 and the cleaning shaft B602 to transmit automatically, simultaneously controls the water valve to start, sprays alcohol solution on the cleaning paper, controls the linkage mechanism to synchronously enable the cleaning shaft A502 and the cleaning shaft B602 to be close to and tightly attached to the steel mesh 8, drives the cleaning shaft A502 and the cleaning shaft B602 to roll forwards on the upper surface and the lower surface of the steel mesh 8 by the moving shaft A501 and the moving shaft B601 to take away residual tin paste and impurities, and then separates the cleaning shaft A502 from the cleaning shaft B602 to the steel mesh 8 by the linkage mechanism and resets;

5. and (5) repeating the step (2-4), wherein the scraper (301) runs for the second time, the front scraper (301) drives the solder paste to move forwards, and the rest is unchanged.

the left end opening is used as an inlet, the right end opening is used as an outlet, an infrared sensor A is arranged at the inlet, and an infrared sensor B is arranged at the outlet;

the judgment method of the top block action comprises the following steps:

when the circuit board 9 enters the printer body from the inlet, the infrared sensor A detects that a board enters, after the circuit board 9 completely enters the printer body 1, the infrared sensor A cannot detect that the circuit board 9 exists at the inlet, the track A and the track B drive the circuit board 9 to a printing position, when the camera recognizes that the board is located at the printing position, the ejector block moves upwards to abut against the circuit board 9, and the printing mechanism starts a printing process;

It is noted that, in this document, relational terms such as front, back, up, down, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: 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 changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a multi-functional tin cream printing machine, includes printing machine body (1), its characterized in that: the printing machine body (1) comprises a feeding mechanism, a printing mechanism, a fixed steel plate mechanism and a control center, wherein the feeding mechanism comprises a moving track, a conveying belt and clamping blocks, the moving track is arranged at the lower end of the printing machine body (1), the conveying belt is arranged on two sides of the moving track, the clamping blocks are arranged on the moving track, the printing mechanism comprises a scraper (301), a scraper frame (302), a supporting shaft (303), a telescopic arm (304) and a supporting arm (305), the supporting arm (305) is vertically arranged at the rear end of the printing machine body (1), one end of the telescopic arm (304) is fixedly connected with the supporting arm (305), the other end of the telescopic arm is movably connected with the upper end of the supporting shaft (303), the lower end of the supporting shaft (303) is provided with the scraper frame (302), the scraper (301) is movably arranged on the scraper frame (302), the edge of the scraper is downward, the supporting shaft (303) is a telescopic rod, and a linear motor is arranged inside, the fixed steel plate mechanism comprises two steel plate rails and an electromagnetic valve, the steel plate rails are horizontally arranged at the upper end of the feeding mechanism, and the feeding mechanism, the printing mechanism and the fixed steel plate mechanism are electrically connected with the control center.

2. A multi-function solder paste printer according to claim 1, wherein: the feeding mechanism further comprises a top block (201) and a feeding base (202), the moving track comprises a track A (203) and a track B (204), the lower end of the printing machine body (1) is provided with a track, the feeding base (202) is arranged between the track A (203) and the track B (204), the lower end of the track A (203) is fixedly arranged on the feeding base (202), the lower end of the track B (204) is provided with a rotating shaft (205), the lower end of the rotating shaft (205) is provided with a lead screw A (206) in a penetrating manner, the tail end of the lead screw A (206) is provided with an electric push rod (207), the lead screw A (206) is movably arranged at the rear end of the printing machine body (1), one end of the feeding base (202) is movably connected with the printing machine body (1) through a lead screw B (208), the two sides of the lower end are movably connected with the printing machine body (1) through the track, the top block (201) is arranged at the upper end of the feeding base (202), a telescopic cylinder (209) is arranged between the top block (201) and the feeding base (202).

3. A multi-function solder paste printer according to claim 2, wherein: the electric push rod (207) is movably connected with the printing machine body (1) through a synchronous motor A, the lead screw B (208) is movably connected with the printing machine body (1) through a synchronous motor B, the synchronous motor A and the synchronous motor B rotate synchronously to enable the track A (203) and the track B (204) to move synchronously, and the track A (203) and the track B (204) are respectively provided with conveying belts rotating synchronously.

4. A multi-function solder paste printer according to claim 2, wherein: both ends set up two openings about printing machine body (1), and the opening upper end sets up infrared sensor for whether detect printing plate get into printing machine body (1) completely in, both ends all outwards extend about track A (203) and track B (204), can extend to the opening part.

5. A multi-function solder paste printer according to claim 4, wherein: the utility model discloses a printing device, including camera, linear electric motor, printing module, kicking block (201) are transparent material, and camera (210) are installed on linear electric motor, and linear electric motor installs in the camera track, and the camera track is installed inside the kicking block, and camera (210) include the flash light, and printing module movable mounting has the circuit board to keep away the recess of position in kicking block (201) upper end, its upper surface fretwork, and its material is transparent.

6. A multi-function solder paste printer according to claim 1, wherein: the printing machine body (1) comprises a cleaning mechanism, the cleaning mechanism comprises a box body (401), a water conveying pipe (402), a water valve, a conveying pipe (403), a cleaning shaft (404), a liquid level sensor, a cantilever (405), a motor and a moving shaft (406), the box body (401) is arranged on one side of the printing machine body (1) and is provided with an opening, one end of the water conveying pipe (402) is connected with the tail end of the box body (401), the other end of the water conveying pipe (402) is connected with the conveying pipe (403), the water valve is arranged at the inlet of the water conveying pipe (402), the liquid level sensor is vertically arranged in the box body (401), the conveying pipe (403) is horizontally arranged below the front end of a fixed steel plate mechanism, cleaning paper is sleeved on the outer surface of the conveying pipe (403), the cleaning paper is wound on the conveying pipe (403) and the cleaning shaft (404), a plurality of small holes are formed in the upper end of the conveying pipe (403), the cleaning shaft (404) is arranged at the rear end of the conveying pipe (403), the both ends of clean axle (404) are connected with removal axle (406), and one end sets up from the biography motor, and cantilever (405) are connected and are removed axle (406) and set up at printing machine body (1) front end, set up vertical cylinder between cantilever and the printing machine body (1), clean mechanism and control center electric connection.

7. A multi-function solder paste printer according to claim 6, wherein: the cleaning mechanism comprises a moving shaft A (501), a cleaning shaft A (502), a conveying pipe A (503), a moving shaft B (601), a cleaning shaft B (602) and a conveying pipe B (603), the moving shaft A (501), the cleaning shaft A (502) and the conveying pipe A (503) are arranged below a fixed steel plate mechanism, the moving shaft B (601), the cleaning shaft B (602) and the conveying pipe B (603) are arranged above the fixed steel plate mechanism, one end of the moving shaft A (501) is connected with a cantilever (405), the other end of the moving shaft A (501) is connected with the cleaning shaft A (502), the conveying pipe A (503) is horizontally arranged below the moving shaft A (501) and is parallel to a scraper (301), one end of the moving shaft B (601) is fixedly arranged at the upper end of the cantilever (405), the other end of the moving shaft B (602) is connected with the cleaning shaft B, the conveying pipe B (603) is horizontally arranged above the moving shaft B (601), and the cleaning shaft A (502) and the cleaning shaft B (602) are respectively provided with a self-transmitting motor, and the self-driven motors synchronously move, and the moving axis A (501) and the moving axis B (601) are electrically connected with the control center.

8. A multi-function solder paste printer according to claim 7, wherein: a linkage mechanism is arranged between the moving shaft A (501) and the moving shaft B (502), the linkage mechanism comprises a fixed block A (701), a fixed block B (702), a rack belt (703), a gear A (704), a gear B (705), a vertical track plate (706), a rotating shaft and a motor D, the fixed block A (701) is sleeved on the rack belt at the left end and fixedly connected with the moving shaft A (501), the fixed block B (702) is sleeved on the rack belt at the right end and fixedly connected with the moving shaft B (502), the rack belt is sleeved on the gear A (704) and the gear B (705), the rotating shaft is fixedly connected with the side surface of the gear A (704), the rotating shaft is connected with the motor D, the motor D is movably connected with a control center, the vertical track plate (706) is fixedly arranged at the front end of the printer body (1), the moving shaft A (501) and the fixed block A (701) are fixedly connected on the vertical track plate (706), the moving shaft B (601) and the fixed block B (702) are fixedly connected to the vertical track plate (706).

9. A multi-function solder paste printer according to claim 1, wherein: the printing machine body (1) comprises an alarm and a display, the alarm comprises a green display lamp, a red display lamp and a buzzer, the green display lamp and the red display lamp are vertically arranged as a whole, the red display lamp is arranged under the green display lamp, the red display lamp is fixedly arranged at the upper end of the printing machine body (1), and the buzzer is arranged at the upper end of the red display lamp.

10. A control method of a multifunctional solder paste printer is characterized in that: any one of the two openings is used as an inlet, the other one is used as an outlet, an infrared sensor A is arranged at the inlet, and an infrared sensor B is arranged at the outlet;

the judgment method of the top block action comprises the following steps:

when a circuit board enters the printer body (1) from an entrance, the infrared sensor A detects that a board enters, after the circuit board completely enters the printer body (1), the infrared sensor A cannot detect that the circuit board exists at the entrance, the track A (203) and the track B (204) drive the circuit board to a printing position, when the camera recognizes that the board is located at the printing position, the ejector block (201) moves upwards to eject the circuit board, and the printing mechanism starts a printing process;

if the infrared sensor A detects that a board enters and the camera recognizes that the board is located at the printing position, the alarm gives an alarm, and the top block (201) does not act;

if the infrared sensor A detects that the plate enters for more than the set time, the alarm gives an alarm, and the top block (201) does not act.