CN113103737B - Printing mechanism for planar screen printing - Google Patents
Printing mechanism for planar screen printing Download PDFInfo
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- CN113103737B CN113103737B CN202110285791.7A CN202110285791A CN113103737B CN 113103737 B CN113103737 B CN 113103737B CN 202110285791 A CN202110285791 A CN 202110285791A CN 113103737 B CN113103737 B CN 113103737B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/40—Inking units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/40—Inking units
- B41F15/42—Inking units comprising squeegees or doctors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Screen Printers (AREA)
Abstract
The invention relates to the technical field of printing, and discloses a printing mechanism for planar silk-screen printing, which comprises a first printing plate and a second printing plate, wherein the tops of the first printing plate and the second printing plate are rotatably connected with a connecting rod, two ends of the connecting rod are fixed by screws, the first printing plate and the second printing plate have the same structure, the bottoms of the first printing plate and the second printing plate are respectively provided with a main ink port, the interiors of the first printing plate and the second printing plate are respectively connected with a main sliding plug in a sliding manner, the upper ends of the first printing plate and the second printing plate are respectively provided with a main air port, and the main air ports are connected with an air pump. According to the ink-jet printing device, through the suction action of the main air port and the air pump connected with the main air port, ink is sucked into the inner cavity of the first printing plate or the second printing plate in the ink scraping process of the first printing plate or the second printing plate, so that the sealing property of an ink storage environment is improved, the volatilization of a solvent in the ink is reduced, the ink is prevented from being dried, and the aim of ensuring the wettability of the ink is fulfilled.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a printing mechanism for planar silk-screen printing.
Background
The screen printing is to attach a template with an image or pattern to a screen, and to print by making a screen printing plate by a manual varnish coating method or a photochemical plate making method. Typically the screen is made from nylon, polyester, silk or metal mesh. When the printing stock is placed directly under the screen with the stencil, the screen printing ink or paint is pressed by the doctor blade through the holes in the middle of the screen and printed onto the printing stock. The stencil on the screen encapsulates a portion of the screen so that paint does not pass through the screen but only the image portion, so that only the image portion has print on the substrate. Screen printing is actually performed by ink penetrating through a printing plate.
In the existing screen printing technology, ink is firstly paved on a screen printing plate by an ink paving knife, then the ink is scraped by a doctor knife, printing is realized in the ink scraping process, the ink is directly exposed in an open environment, a solvent in the ink is easy to evaporate or volatilize, the ink is dried, even a hard block is formed on a screen printing plate, the hard block is easy to damage the screen printing plate in the ink scraping process, and the service life of the screen printing plate is greatly shortened; in addition, the printing mechanism in the prior art needs two mechanisms of the ink spreading blade and the ink scraping blade to be matched with each other, and only one-time printing can be realized in one-time reciprocating movement, so that the printing efficiency is low.
Disclosure of Invention
Aiming at the defects of the prior screen printing mechanism in the background technology in the using process, the invention provides a printing mechanism for plane screen printing, which has the advantages of ink storage and ink drying prevention and solves the problems in the background technology.
The invention provides the following technical scheme: a printing mechanism for plane silk-screen printing comprises a first printing plate and a second printing plate, wherein the tops of the first printing plate and the second printing plate are rotatably connected with connecting rods, two ends of each connecting rod are fixed by screws, the first printing plate and the second printing plate are identical in structure, main ink ports are formed in the bottoms of the first printing plate and the second printing plate, main sliding plugs are connected inside the first printing plate and the second printing plate in a sliding mode, main air ports are formed in the upper ends of the first printing plate and the second printing plate, air pumps are connected to the main air ports, side air ports close to the upper ends of the first printing plate and the second printing plate are formed in the side faces of the first printing plate and the second printing plate, ink transfer ports are formed in the side faces of the first printing plate and the second printing plate, and an ink liquid exchange device is connected between the two ink transfer ports.
Preferably, the ink liquid exchange device comprises a transfer component and an ink liquid buffer tube, the ink liquid buffer tube is vertically connected above the transfer component, the transfer component comprises a hard tube and two hoses, the two hoses are fixedly connected to two sides of the hard tube, one end of each hose, far away from the hard tube, is connected with the ink transfer ports on the first printing plate and the second printing plate, and valves are mounted at the communication positions of the hard tube and the two hoses.
Preferably, the top ends of the first printing plate and the second printing plate are connected with a driving connecting piece, the driving connecting piece is connected with a reciprocating driving mechanism, the reciprocating driving mechanism is connected with a controller, the controller is electrically connected with a valve, and the valve is a one-way electromagnetic valve.
Preferably, the inside sliding connection of ink liquid buffer tube has the slip stopper that shifts, the top fixedly connected with push rod of slip stopper shifts, the top of push rod is equipped with first permanent magnet, the inside top of ink liquid buffer tube is equipped with the air current conversion equipment, the inner chamber intercommunication of air current conversion equipment has the side trachea, the tracheal quantity of side is two and communicates with the side gas port of first printing plate and second printing plate respectively, the lower extreme of air current conversion equipment is equipped with induction coil, induction coil electric connection is to the controller on.
Preferably, the airflow conversion device comprises a fixed outer box, a sealed moving block is slidably connected inside the fixed outer box, two fixed air holes are formed in the two sides of the fixed outer box, the two fixed air holes are close to the upper end and the lower end of the fixed outer box respectively, a movable air passage is formed inside the sealed moving block, the number of the movable air passages is two and corresponds to that of the fixed air holes respectively, side air pipes are sleeved at the upper end and the lower end of the fixed outer box respectively, the inner diameter of each side air pipe is slightly larger than that of each movable air passage, a folding baffle is connected between the inner wall of the fixed outer box and the sealed moving block, the folding baffle is slidably connected to the inner wall of the fixed outer box and can cover the fixed air holes, and a second permanent magnet mutually attracted with the first permanent magnet is arranged on the bottom surface of the sealed moving block.
Preferably, the bottom surface of the fixed outer box is provided with a through hole, the push rod can slide up and down along the through hole, the inner wall of the fixed outer box is provided with a sealing soft sleeve, and the sealing soft sleeve is covered on the periphery of the through hole.
Preferably, the lower ends of the first printing plate and the second printing plate are respectively provided with an ink baffle plate, the ink baffle plates are arc-shaped, and the bottom ends of the ink baffle plates are bent towards the side of a central axis connecting the first printing plate and the second printing plate.
The invention has the following beneficial effects:
1. according to the ink-jet printing device, through the suction action of the main air port and the air pump connected with the main air port, ink is sucked into the inner cavity of the first printing plate or the second printing plate in the ink scraping process of the first printing plate or the second printing plate, so that the sealing property of an ink storage environment is improved, the volatilization of a solvent in the ink is reduced, the ink is prevented from being dried, and the aim of ensuring the wettability of the ink is fulfilled.
2. According to the invention, through the use of the first printing plate and the second printing plate with the same structures, the functions of ink spreading and ink scraping can be realized for the first printing plate and the second printing plate, the purpose of alternately spreading and scraping ink for the first printing plate and the second printing plate is achieved by controlling the suction function of the air pump connected with the main air port, two times of printing is realized in one reciprocating process, and the printing efficiency is greatly improved.
3. The invention realizes the purpose of transferring the ink between the first printing plate and the second printing plate by the mutual matching of the transferring component, the ink buffer tube, the transferring sliding plug, the push rod, the first permanent magnet and the air flow conversion device, can prevent the condition that one of the first printing plate or the second printing plate has ink and the other one has no ink, and reduces the times of stopping to add the ink because the ink can be transferred between the first printing plate and the second printing plate, thereby being beneficial to improving the printing efficiency.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the air flow switching device of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a left side view of a first printing plate of the present invention;
FIG. 5 is a right side view of a first printing plate of the present invention.
In the figure: 1. a first printing plate; 2. a second printing plate; 3. a connecting rod; 4. a drive connection; 5. a main ink port; 6. a main sliding plug; 7. a primary air port; 8. an ink baffle plate; 9. a transfer assembly; 901. a rigid tube; 902. a hose; 903. a valve; 10. an ink buffer tube; 11. an ink transfer port; 12. a side air port; 13. transferring a sliding plug; 14. a push rod; 15. a first permanent magnet; 1501. a second permanent magnet; 16. a lateral air pipe; 17. an air flow switching device; 1701. fixing the outer box; 1702. sealing the moving block; 1703. fixing the air holes; 1704. folding the baffle; 1705. moving the airway; 18. sealing the soft sleeve; 19. an induction coil.
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, a printing mechanism for flat screen printing includes a first printing plate 1 and a second printing plate 2, the tops of the first printing plate 1 and the second printing plate 2 are rotatably connected with a connecting rod 3, and both ends of the connecting rod 3 are fixed by screws, in addition, the outer walls of the first printing plate 1 and the second printing plate 2 are provided with a scale plate, the scale plate can slide along the surfaces of the first printing plate 1 and the second printing plate 2, and as the opening and closing angle between the first printing plate 1 and the second printing plate 2 is set, the opening angle between the first printing plate 1 and the second printing plate 2 can be set to adapt to printing stocks and silk screen printing plates of different materials, the first printing plate 1 and the second printing plate 2 have the same structure, the lower ends of the first printing plate 1 and the second printing plate 2 are both provided with an ink blocking plate 8, the ink blocking plate 8 is arc-shaped, and the bottom end of the ink blocking plate 8 is bent towards the central axis side where the first printing plate 1 and the second printing plate 2 are connected, the ink blocking plate 8 is used for scraping ink, meanwhile, the back of the ink blocking plate 8 can be used for scraping the silk screen plate clean and then spreading ink, main ink ports 5 are formed in the bottoms of the first printing plate 1 and the second printing plate 2, main sliding plugs 6 are connected inside the first printing plate 1 and the second printing plate 2 in a sliding mode, ink located below the main sliding plugs 6 is filled in inner cavities of the first printing plate 1 and the second printing plate 2, the ink flows out from the main ink ports 5 and can enter the inner cavities of the first printing plate 1 and the second printing plate 2 from the main ink ports 5, main air ports 7 are formed in the upper ends of the first printing plate 1 and the second printing plate 2, an air pump is connected with the main air ports 7 and is used for referring to the attached drawing 1 after being connected with the main air ports 7, when the first printing plate 1 and the second printing plate 2 move towards the left side, sundries or dried ink blocks and the like on the silk screen plate can be scraped leftwards by the back of the ink blocking plate 8 of the first printing plate 1, then the ink comes out from the inner cavity of the first printing plate 1 and is laid on the silk screen plate which is scraped cleanly, at the moment, the inner cavity of the first printing plate 1 is filled with air, the pressure of the air acts on the main sliding plug 6 to push the ink to flow out through the main ink port 5 and is laid on the silk screen plate which is positioned below the first printing plate 1 and the second printing plate 2, then the second printing plate 2 scrapes the ink from the silk screen plate, the ink enters the inner cavity of the second printing plate 2 through the main ink port 5 on the second printing plate 2, therefore, the main air port 7 above the second printing plate 2 is pumped, the ink is forced to flow to the inner part of the second printing plate 2 through the air pressure, in order to improve the pushing force of the air to the ink, the gap between the ink baffle plate 8 and the bottom surface of the first printing plate 1 is smaller than the thickness of the ink layer, thereby the ink completely blocks the ink inlet port of the ink, and the air amount entering the inner cavity of the second printing plate 2 can be reduced, the collection rate of ink is improved;
the side surfaces of the first printing plate 1 and the second printing plate 2 are provided with side air ports 12 close to the upper ends, the side surfaces of the first printing plate 1 and the second printing plate 2 are provided with ink transfer ports 11, an ink exchange device is connected between the two ink transfer ports 11 and is used for transferring collected ink to the first printing plate 1 or the second printing plate 2 where the ink is laid, and the ink is recycled.
The ink exchange device comprises a transfer component 9 and an ink buffer tube 10, wherein the ink buffer tube 10 is vertically connected above the transfer component 9, the transfer component 9 comprises a hard tube 901 and two hoses 902, the number of the hoses 902 is two, the two hoses 902 are fixedly connected to two sides of the hard tube 901, one end of each hose 902, which is far away from the hard tube 901, is connected with the ink transfer ports 11 on the first printed board 1 and the second printed board 2, and valves 903 are arranged at the communication positions of the hard tube 901 and the two hoses 902; first printing plate 1 and second printing plate 2's top is connected with drive connecting piece 4, and drive connecting piece 4 is connected with reciprocal actuating mechanism, and reciprocal actuating mechanism is connected with the controller, controller and valve 903 electric connection, and valve 903 is one-way solenoid valve, and the inside sliding connection of ink liquid buffer tube 10 has the plug 13 that shifts, and the distance of one way that reciprocal actuating mechanism can be controlled to general controller, refers to fig. 1, and the switching of valve 903 is controlled as follows in this application:
when the reciprocating driving mechanism moves to the left side in a single stroke, ink is discharged from the first printing plate 1, ink is fed into the second printing plate 2, therefore, the ink in the second printing plate 2 needs to be transferred into the first printing plate 1, when the transfer sliding plug 13 moves upwards, the left valve 903 is closed, the right valve 903 is opened, the ink in the second printing plate 2 enters the rigid tube 901 and the ink buffer tube 10, when the transfer sliding plug 13 moves downwards, the right valve 903 is closed, the left valve 903 is opened, and the ink in the rigid tube 901 and the ink buffer tube 10 enters the first printing plate 1.
When the reciprocating drive mechanism moves to the right side in a single stroke, ink is discharged from the second printing plate 2, ink is fed into the first printing plate 1, therefore, the ink in the first printing plate 1 needs to be transferred into the second printing plate 2, when the transfer sliding plug 13 moves upwards, the right valve 903 is closed, the left valve 903 is opened, the ink in the first printing plate 1 enters the rigid tube 901 and the ink buffer tube 10, when the transfer sliding plug 13 moves downwards, the right valve 903 is opened, the left valve 903 is closed, and the ink in the rigid tube 901 and the ink buffer tube 10 enters the second printing plate 2.
A transfer sliding plug 13 is slidably connected inside the ink buffer tube 10, a push rod 14 is fixedly connected to the top of the transfer sliding plug 13, a first permanent magnet 15 is arranged at the top end of the push rod 14, an air flow conversion device 17 is arranged at the top end inside the ink buffer tube 10, a side air tube 16 is communicated with the inner cavity of the air flow conversion device 17, the number of the side air tubes 16 is two and is respectively communicated with the side air ports 12 of the first printing plate 1 and the second printing plate 2, an induction coil 19 is arranged at the lower end of the air flow conversion device 17, the induction coil 19 is electrically connected to the controller, when the transfer sliding plug 13 slides upwards along the inner wall of the ink buffer tube 10, the first permanent magnet 15 gradually approaches the induction coil 19, therefore, the induction current on the induction coil 19 gradually increases, and when the transfer sliding plug 13 moves downwards, the first permanent magnet 15 gradually gets away from the induction coil 19, the induction current on the induction coil 19 gradually decreases, the controller can acquire the moving state of the transfer spool 13 according to the change of the induced current on the induction coil 19, and thus can control the opening and closing of the valve 903 according to the moving direction of the reciprocating drive mechanism and the moving direction of the transfer spool 13.
The airflow conversion device 17 comprises a fixed outer box 1701, a sealing moving block 1702 is connected inside the fixed outer box 1701 in a sliding manner, two sides of the fixed outer box 1701 are respectively provided with a fixed air hole 1703, the two fixed air holes 1703 are respectively close to the upper end and the lower end of the fixed outer box 1701, a moving air passage 1705 is arranged inside the sealing moving block 1702, the number of the moving air passages 1705 is two and respectively corresponds to the fixed air holes 1703, the upper end and the lower end of the fixed outer box 1701 are respectively sleeved with a side air pipe 16, the inner diameter of the side air pipe 16 is slightly larger than that of the moving air passage 1705, namely the air inlet speed of the side air pipe 16 is larger than the air outlet speed of the sealing moving block 1702, a folding baffle 1704 is connected between the inner wall of the fixed outer box 1701 and the sealing moving block 1702, the folding baffle 1704 is connected on the inner wall of the fixed outer box 1701 in a sliding manner and can cover the fixed air holes 1703, the folding baffle 1704 can be folded and still maintain the sealing performance between the fixed outer box 1701 when being folded, the gas can be prevented from overflowing from the fixed air holes 1703, in addition, the folding baffle 1704 can not be folded, but still slide along the inner wall of the fixed outer box 1701, as long as the folding baffle 1704 can cover the fixed air holes 1703 when the movable air channel 1705 is dislocated with the corresponding fixed air holes 1703, the bottom surface of the sealing moving block 1702 is provided with a second permanent magnet 1501 mutually attracted with the first permanent magnet 15, when the sealing moving block 1702 is positioned on the upper side of the fixed outer box 1701, if the first permanent magnet 15 moves to a position close to the second permanent magnet 1501, the sealing moving block 1702 can be pulled downwards due to the attraction between magnetism, so that the fixed air holes 1703 at the upper end of the sealing moving block 1702 are dislocated with the movable air channels 1705, and the movable air channel 1705 at the lower end of the sealing moving block 1702 is gradually overlapped with the sealing moving block 1702; when the sealing moving block 1702 is located at the lower side of the fixed outer box 1701, when the first permanent magnet 15 is close to the position of the second permanent magnet 1501, the first permanent magnet 15 is pushed by the transfer sliding plug 13 to move up continuously, so that the fixed air holes 1703 at the lower end of the sealing moving block 1702 are dislocated with the moving air passages 1705, the fixed air holes 1703 at the upper end of the sealing moving block 1702 are overlapped with the moving air passages 1705 gradually, and finally, after the first permanent magnet 15 is disconnected from the second permanent magnet 1501, the sealing moving block 1702 moves downwards gradually to restore the original state.
The bottom surface of the fixed outer box 1701 is provided with a through hole, the push rod 14 can slide up and down along the through hole, the inner wall of the fixed outer box 1701 is provided with a sealing soft sleeve 18, the sealing soft sleeve 18 is covered on the periphery of the through hole, and the sealing soft sleeve 18 is used for separating the through hole from an air space below the fixed outer box 1701 and preventing air from flowing into the ink buffer tube 10 through the through hole.
Referring to fig. 2, assuming that the side gas pipe 16 at the upper end of the gas flow switching device 17 communicates with the second printed board 2 and the side gas pipe 16 at the lower end of the gas flow switching device 17 communicates with the first printed board 1, the gas flow switching device 17 operates as follows:
the first and second printed boards 1 and 2 move to the left, the first printed board 1 discharges ink, the upper end of the first printed board 1 enters ink, the second printed board 2 enters ink, the upper end of the second printed board 2 is pumped, at this time, the space at the lower end of the fixed outer box 1701 enters air, the space at the upper end of the fixed outer box 1701 is pumped, the sealed moving block 1702 moves upwards under the action of air pressure, a moving air duct 1705 at the upper end of the sealed moving block 1702 coincides with a fixed air hole 1703 at the upper end of the fixed outer box 1701, therefore, the air in the ink buffer tube 10 passes through the moving air duct 1705, the fixed air hole 1703, the space at the upper end of the fixed outer box 1701, the side air tube 16 and is pumped out through the second printed board 2, and therefore, the transfer slide plug 13 moves upwards under the action of the air pressure difference under the air pumping; when the transfer sliding plug 13, the push rod 14 and the first permanent magnet 15 move upwards to a certain distance, the attraction between the first permanent magnet 15 and the second permanent magnet 1501 overcomes the action of the air pressure difference to make the sealing moving block 1702 move downwards until the moving air channel 1705 at the lower end of the sealing moving block 1702 coincides with the fixed air hole 1703 at the lower end of the fixed outer box 1701, at this time, air in the cavity of the first printed board 1 enters the space in the lower end of the fixed outer case 1701 through the first permanent magnets 15, and enters the lumen of ink buffer tube 10 through travel air passage 1705, fixation air holes 1703, and pushes transfer spool 13 downward, the first permanent magnet 15 is then separated from the second permanent magnet 1501 by pneumatic pressure, and the sealing moving block 1702 is also moved up slowly by the pneumatic pressure at its upper end, in the process, the transfer spool 13 moves downward, squeezing the ink buffer tube 10 and the ink in the hard tube 901 into the first printing plate 1;
the second and the first printed boards 1 and 2 move to the right side, the first printed board 1 enters ink, the second printed board 2 discharges ink, the upper end of the first printed board 1 is pumped, the upper end of the second printed board 2 enters air, at this time, the space at the upper end of the fixed outer box 1701 enters air, the space at the lower end of the fixed outer box 1701 is pumped, the sealed moving block 1702 moves downwards, the moving air duct 1705 at the lower end of the sealed moving block 1702 coincides with the fixed air hole 1703 at the lower end of the fixed outer box 1701, the air in the ink buffer tube 10 is pumped out through the space at the lower end of the fixed outer box 1701, the moving air duct 1705, the fixed air hole 1703 and the first printed board 1, therefore, the transfer sliding plug 13 moves upwards under the action of air pressure difference, the ink in the first printed board 1 is pumped into the hard tube 901 and the ink 10, and when the transfer sliding plug 13 gradually moves upwards and abuts against the second permanent magnet 1501, the buffer tube moves upwards under the action of the suction force, and pushing the sealing moving block 1702 to move upwards, so that the moving air passage 1705 at the lower end of the sealing moving block 1702 is dislocated with the fixed air hole 1703, and the moving air passage 1705 at the upper end is overlapped with the fixed air hole 1703, at this time, air in the second printing plate 2 enters the ink buffer tube 10 through the upper end space of the fixed outer box 1701, the moving air passage 1705 at the upper end and the fixed air hole 1703, and pushes the transfer sliding plug 13 to move downwards, the ink buffer tube 10 and ink in the hard tube 901 are extruded into the second printing plate 2, and the sealing moving block 1702 gradually moves downwards and returns to the original position after the transfer sliding plug 13 moves downwards.
In order to ensure that enough air charging time is given when the sealing moving block 1702 moves downwards in the process, for the first case, as the magnetic attraction force of the first permanent magnet 15 and the second permanent magnet 1501 is longer, the function of the attraction force is lower, and therefore, when the transfer sliding plug 13 moves downwards, the transfer sliding plug 13 gradually moves away from the sealing moving block 1702, so that the sealing moving block 1702 gradually moves upwards, and when the moving air channel 1705 at the lower end of the sealing moving block 1702 is gradually dislocated with the fixed air hole 1703, the transfer sliding plug 13 can still be subjected to downward air pressure until the moving air channel 1705 at the lower end of the sealing moving block 1702 is completely dislocated with the fixed air hole 1703; in the second case, since the sealing moving block 1702 is pushed upward by the transfer slide plug 13 to overcome the suction force in the space at the lower end of the fixed outer box 1701, when the transfer slide plug 13 is pushed upward, the suction force of the fixed outer box 1701 is gradually reduced to no suction force, and when no suction force is applied, the transfer slide plug 13 has no pushing force on the sealing moving block 1702, so that the time for air to enter the ink buffer tube 10 is too short to reach the effect of pushing the transfer slide plug 13 downward to squeeze the ink, therefore, a spring is provided at the upper end of the sealing moving block 1702, and when the sealing moving block 1702 is moved to the upper limit, the spring is still in a stretched state, so that a small upward force is continuously applied to the sealing moving block 1702, and when the transfer slide plug 13 is separated from the contact position with the sealing moving block 1702, the sealing moving block 1702 is pulled by the spring and the suction force at the lower end of the sealing moving block 1702, and slow down the speed that sealed movable block 1702 descends to make the contact time of the removal air flue 1705 and the fixed gas pocket 1703 of sealed movable block 1702 upper end obtain prolonging, in this time, can accomplish the promotion to shifting sliding plug 13, make ink extruded, and the operation in the first condition is not influenced in the use of spring, as long as guarantee first permanent magnet 15 and second permanent magnet 1501 the appeal can overcome the pulling force of spring can.
It is noted that, herein, relational terms such as first and second, 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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a plane silk screen printing is with printing mechanism, includes first printing plate (1) and second printing plate (2), its characterized in that: the top of first printing plate (1) and second printing plate (2) is rotated and is connected with connecting rod (3) and the both ends of connecting rod (3) all use the screw fixation, the structure of first printing plate (1) and second printing plate (2) is the same, main china ink mouth (5) have all been seted up to the bottom of first printing plate (1) and second printing plate (2), the inside of first printing plate (1) and second printing plate (2) all sliding connection has main sliding plug (6), main gas port (7) have all been seted up to the upper end of first printing plate (1) and second printing plate (2), main gas port (7) are connected with the air pump, side gas port (12) near the upper end have all been seted up to the side of first printing plate (1) and second printing plate (2), china ink transfer mouth (11) have all been seted up to the side of first printing plate (1) and second printing plate (2), an ink exchanging device is connected between the two ink transferring ports (11);
the ink exchanging device comprises a transfer component (9) and ink buffer tubes (10), wherein the ink buffer tubes (10) are vertically connected above the transfer component (9), the transfer component (9) comprises a hard tube (901) and hoses (902), the number of the hoses (902) is two, the hoses (902) are fixedly connected to two sides of the hard tube (901), one end, far away from the hard tube (901), of each hose (902) is connected with ink transfer ports (11) on a first printing plate (1) and a second printing plate (2), and valves (903) are mounted at the communication positions of the hard tube (901) and the two hoses (902);
the top ends of the first printing plate (1) and the second printing plate (2) are connected with a driving connecting piece (4), the driving connecting piece (4) is connected with a reciprocating driving mechanism, the reciprocating driving mechanism is connected with a controller, the controller is electrically connected with a valve (903), and the valve (903) is a one-way electromagnetic valve;
the ink buffer tube (10) is connected with a transfer sliding plug (13) in a sliding manner, the top of the transfer sliding plug (13) is fixedly connected with a push rod (14), a first permanent magnet (15) is arranged at the top end of the push rod (14), an air flow conversion device (17) is arranged at the top end of the interior of the ink buffer tube (10), the inner cavity of the air flow conversion device (17) is communicated with side air tubes (16), the number of the side air tubes (16) is two, the side air tubes are respectively communicated with side air ports (12) of the first printed board (1) and the second printed board (2), an induction coil (19) is arranged at the lower end of the air flow conversion device (17), and the induction coil (19) is electrically connected to a controller;
the airflow conversion device (17) comprises a fixed outer box (1701), a sealing moving block (1702) is connected to the inside of the fixed outer box (1701) in a sliding mode, two sides of the fixed outer box (1701) are respectively provided with two fixed air holes (1703), the two fixed air holes (1703) are respectively close to the upper end and the lower end of the fixed outer box (1701), a moving air passage (1705) is formed in the sealing moving block (1702), the number of the moving air passages (1705) is two and respectively corresponds to the fixed air holes (1703), the upper end and the lower end of the fixed outer box (1701) are respectively sleeved with a lateral air pipe (16), the inner diameter of the lateral air pipe (16) is slightly larger than that of the moving air passage (1705), a folding baffle (1704) is connected between the inner wall of the fixed outer box (1701) and the sealing moving block (1702), and the folding baffle (1704) covers the fixed air holes (1703) which are connected to the inner wall of the fixed outer box (1701) in a sliding mode, a second permanent magnet (1501) attracted with the first permanent magnet (15) is arranged on the bottom surface of the sealing moving block (1702);
the lower extreme of first printing plate (1) and second printing plate (2) all is equipped with fender china ink board (8), keep off china ink board (8) and be the arc and keep off the bottom of china ink board (8) and all to the axis side bending that first printing plate (1) and second printing plate (2) are connected.
2. The printing mechanism for flat screen printing as claimed in claim 1, wherein: the bottom surface of the fixed outer box (1701) is provided with a through hole, the push rod (14) can slide up and down along the through hole, the inner wall of the fixed outer box (1701) is provided with a sealing soft sleeve (18), and the sealing soft sleeve (18) covers the periphery of the through hole.
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| CN202110285791.7A CN113103737B (en) | 2021-03-17 | 2021-03-17 | Printing mechanism for planar screen printing |
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| CN202110285791.7A CN113103737B (en) | 2021-03-17 | 2021-03-17 | Printing mechanism for planar screen printing |
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| CN113103737B true CN113103737B (en) | 2022-06-21 |
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| CN113103737A (en) | 2021-07-13 |
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