CN108601240B - SMT printing jig - Google Patents
SMT printing jig Download PDFInfo
- Publication number
- CN108601240B CN108601240B CN201810338266.5A CN201810338266A CN108601240B CN 108601240 B CN108601240 B CN 108601240B CN 201810338266 A CN201810338266 A CN 201810338266A CN 108601240 B CN108601240 B CN 108601240B
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- Prior art keywords
- tin
- recovery
- scraper
- cylinder
- stirring
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3457—Solder materials or compositions; Methods of application thereof
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/01—Tools for processing; Objects used during processing
- H05K2203/0104—Tools for processing; Objects used during processing for patterning or coating
- H05K2203/0126—Dispenser, e.g. for solder paste, for supplying conductive paste for screen printing or for filling holes
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/01—Tools for processing; Objects used during processing
- H05K2203/0104—Tools for processing; Objects used during processing for patterning or coating
- H05K2203/0139—Blade or squeegee, e.g. for screen printing or filling of holes
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Screen Printers (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses an SMT printing jig, and mainly relates to a printing device for a printed circuit board. Including organism, tool body, FR4 board, PCB circuit board, SMT printing steel mesh and scraping printing device assembly, scrape printing device assembly and include that high pressure stores tin box, scraper drive arrangement assembly, retrieves sword drive arrangement assembly, tin cream agitating unit assembly, stirring box body, scraper drive arrangement assembly includes scraper cylinder, scraper drive connecting piece and scraper cutter body, retrieve sword drive arrangement assembly including retrieving the sword cylinder, retrieving sword drive connecting piece and retrieving the cutter body. The invention has the beneficial effects that: a series of defects caused by manually stirring the solder paste in the traditional technology are eliminated, and the production efficiency of the product is improved by adopting the modes of automatically stirring the solder paste and automatically discharging the solder paste; and the redundant solder paste can be recycled.
Description
Technical Field
The invention relates to a printing device for a printed circuit board, in particular to an SMT printing jig.
Background
Printed circuit boards are widely used because of their high packaging density. Firstly, preparation work before printing and auxiliary equipment inspection work are carried out, and then the PCB fixing position is set by comparing the positions of the openings of the screen printing plate, so that the PCB is fixed. Then placing a template, wherein an SMT printing steel mesh is arranged on the template, and carrying out basic alignment and fine adjustment. Then manually stirring the solder paste for 3-5 minutes; and after stirring, coating viscous solder paste above the hole opening position of the SMT printing steel mesh, and obliquely scraping the viscous solder paste once at an angle of 45 degrees or 65 degrees by using a scraper, so that the solder paste is printed on a circuit board bonding pad. And then, replacing the board to perform screen printing work on the second board. At present, the printing process of the printed circuit board still adopts manual stirring of the solder paste, the manual stirring of the solder paste wastes time and energy, the working efficiency is low, the solder paste is viscous, the labor intensity of the stirring process is high, and dust and plush substances in the air are easily mixed into the solder paste during stirring, so that the open pore of the SMT printing steel mesh is not continuous in coating and leakage when the scraper scrapes the solder paste, and the product quality is influenced. And can paint the inequality when scribbling the trompil position top of SMT printing steel mesh with thick tin cream by hand, need be manual with its fine setting to can be complete when guaranteeing with the scraper blade coating miss print cover the circuit board pad on. Therefore, there is a need for a device for automatically stirring and dispensing solder paste to improve the production efficiency of products.
Disclosure of Invention
The invention aims to provide an SMT printing jig which abandons a series of defects caused by manually stirring solder paste in the traditional technology and improves the production efficiency of products by adopting a mode of automatically stirring and releasing the solder paste; and the redundant solder paste can be recycled.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an SMT printing jig comprises a machine body, a jig body, an FR4 board, a PCB circuit board, an SMT printing steel mesh and a scraping printing device assembly, wherein the machine body is provided with a steel mesh gripper and a transverse position adjusting mechanism, the transverse position adjusting mechanism is a screw nut transmission mechanism, a sliding plate is arranged on a nut of the screw nut transmission mechanism, the back of the scraping printing device assembly is fixed with the sliding plate, the scraping printing device assembly comprises a high-pressure tin storage box, a scraper driving device assembly, a recovery knife driving device assembly, a tin paste stirring device assembly and a stirring box body, the high-pressure tin storage box is connected with the sliding plate, cylinder body supports are arranged on two sides of the high-pressure tin storage box, the scraper driving device assembly comprises a scraper cylinder, a scraper driving connecting piece and a scraper cutter body, the recovery knife driving device assembly comprises a recovery knife cylinder, a recovery knife driving connecting piece and a recovery knife body, the scraper cylinder and the recovery knife cylinder are respectively arranged on cylinder body supports on two sides of the high-pressure tin storage box, the scraper cylinder drives the scraper knife body to move up and down through the scraper driving connecting piece, and the recovery knife cylinder drives the recovery knife body to move up and down through the recovery knife driving connecting piece; the solder paste stirring device assembly and the stirring box body are arranged between the scraper driving device assembly and the recovery knife driving device assembly, the two sides of the top surface of the stirring box body are connected with the bottom of the high-pressure tin storage box through bearing seat frames, the bottom of the stirring box body is provided with a tin leakage opening, a first electromagnetic control valve is arranged at the tin leakage opening, a strip-shaped sliding hole is arranged at the top of the stirring box body, the solder paste stirring device assembly comprises a driving motor and a thread transmission mechanism, the thread transmission mechanism comprises a transmission screw rod and a driven nut, the two ends of the transmission screw are matched with the rolling bearings in the bearing seat frame, the driving motor drives the transmission screw to rotate, the driven nut is provided with a stirring plate, the stirring plate passes through the strip-shaped sliding hole and is arranged in the stirring box body, and the reciprocating motion of the driven nut drives the stirring plate to reciprocate in the stirring box body along the strip-shaped sliding hole; the inner cavity of the high-pressure tin storage box is communicated with the inner cavity of the stirring box body through a conveying pipe, and a second electromagnetic control valve is arranged at the communicating position of the conveying pipe and the inner cavity of the high-pressure tin storage box.
The scraping and printing device assembly further comprises a negative pressure recovery tin box, the negative pressure recovery tin box is arranged at the top of the high pressure storage tin box, a cavity partition plate is arranged between the inner cavity of the negative pressure recovery tin box and the inner cavity of the high pressure storage tin box, and an electromagnetic control communication valve is arranged on the cavity partition plate; the tin liquor suction port is formed in one side, close to the scraper body, of the bottom of the recovery knife body, the tin liquor outlet is formed in one side of the top of the recovery knife body, the tin liquor outlet is communicated with the inner cavity of the negative pressure tin recovery box through a recovery pipe, and a third electromagnetic control valve is arranged at the joint of the tin liquor outlet and the recovery pipe.
The scraper driving connecting piece comprises two first vertical sliding columns and a first sliding column connecting plate, the tops of the two first vertical sliding columns are connected through the first sliding column connecting plate, the two first vertical sliding columns are connected with the two first vertical sliding holes in a sliding mode, and the center of the bottom surface of the first sliding column connecting plate is connected with a telescopic rod of the scraper cylinder; the bottoms of the two first vertical sliding columns are provided with inclined connecting flat plates, and the scraper bodies are fixed with the bottoms of the inclined connecting flat plates through bolts; the cylinder body support where the recovery knife cylinder is located is provided with two second vertical sliding holes, the recovery knife driving connecting piece comprises two second vertical sliding columns and a second sliding column connecting plate, the tops of the two second vertical sliding columns are connected through the second sliding column connecting plate, the two second vertical sliding columns are connected with the two second vertical sliding holes in a sliding mode, and the center position of the bottom surface of the second sliding column connecting plate is connected with a telescopic rod of the recovery knife cylinder; the bottoms of the two second vertical sliding columns are provided with vertical connecting flat plates, and the bottom of the recovery knife body is fixed with the bottom of the vertical connecting flat plate through bolts.
The stirring box body is close to scraper cylinder one side and is equipped with spacing, the dull and stereotyped top of slope connection is equipped with the horizontal baffle that suits with spacing position.
The tail end of the scraper body of the recovery cutter is provided with an inclined cutter hook, and the inclined cutter hook faces one side of the scraper body.
The bottom surface of the stirring box body is an inclined conical surface.
Compared with the prior art, the invention has the beneficial effects that:
the device is provided with a high-pressure tin storage box, a tin paste stirring device assembly and a stirring box body, wherein the high-pressure tin storage box can convey tin paste into the stirring box body, the tin paste stirring device assembly can further automatically stir the tin paste in the stirring box body, a first electromagnetic control valve is controlled to be opened after the tin paste is stirred, the stirred tin paste automatically leaks to the position above the opening position of the SMT printing steel mesh through a tin leakage opening for waiting use, the tin leakage opening is in a strip shape, the strip length of the tin leakage opening is matched with the length of a PCB to be printed, and the PCB is obliquely scraped once by a scraper knife body, so that the tin paste is printed on a bonding pad of the PCB, and the solder paste can cover the whole PCB circuit board, the phenomena of discontinuous coating and leakage and brush leakage can not occur, therefore, the device can ensure the product quality, a series of defects caused by manually stirring the solder paste in the traditional technology are eliminated, and the production efficiency of the product is improved by adopting the modes of automatically stirring the solder paste and automatically releasing the solder paste. And the scraping and printing device assembly of the device also comprises a negative pressure recovery tin box, a tin liquid suction port is arranged at one side, close to the scraper knife body, of the bottom of the recovery knife body, a tin liquid outlet is communicated with the inner cavity of the negative pressure recovery tin box through a recovery pipe, a third electromagnetic control valve is arranged at the joint of the tin liquid outlet and the recovery pipe, and the redundant tin paste recovery process is as follows: the scraper cylinder drives the scraper body to move upwards through the scraper driving connecting piece so as to prevent the scraper body from contacting with the SMT printing steel mesh, the recovery knife cylinder drives the recovery knife body to move downwards through the recovery knife driving connecting piece until the recovery knife body contacts with the SMT printing steel mesh, then the transverse position adjusting mechanism (screw nut transmission mechanism) drives the whole scraping and printing device assembly to move towards the direction of the scraper body (namely, the movement direction is opposite to that of the scraper body when the scraper body scrapes the tin paste), the redundant tin paste on the SMT printing steel mesh can be scraped and received on the recovery knife body in the movement process, under the negative pressure action of the negative pressure recovery tin box, the redundant tin paste can be sucked from a tin liquid suction port on the recovery knife body, and then sequentially enters an inner cavity of the negative pressure recovery tin box through an inner cavity of the recovery knife body, a tin liquid outlet and a recovery pipe so as to complete recovery, and when the device is idle, the high, The air pressure in the pressure recovery tin box is balanced, the electromagnetic control communication valve is opened, and the tin paste recovered in the negative pressure recovery tin box is discharged into the high-pressure storage tin box again for use.
Drawings
FIG. 1 is a schematic diagram of the detailed structure of the present invention.
FIG. 2 is a schematic view of the assembly of the squeegee assembly of the present invention.
FIG. 3 is a schematic structural diagram of the position distribution and connection mode of the high-pressure tin storage box, the negative-pressure tin recovery box, the cylinder body support, the scraper driving device assembly and the recovery knife driving device assembly.
FIG. 4 is a schematic structural view of a solder paste stirring device assembly and a stirring box body according to the present invention.
Reference numerals shown in the drawings:
1. a body; 2. a jig body; 3. FR4 board; 4. SMT printing steel mesh; 5. a squeegee assembly; 6. a steel mesh gripper; 7. a screw rod and nut transmission mechanism; 8. a slide plate; 9. storing the tin box under high pressure; 10. a stirring box body; 11. a cylinder block support; 12. a scraper cylinder; 13. a scraper body; 14. a cutter recovery cylinder; 15. recovering the cutter body; 16. a bearing mount; 17. a solder leakage port; 18. a first solenoid control valve; 19. a strip-shaped slide hole; 20. a drive motor; 21. a drive screw; 22. a driven nut; 23. a stirring plate; 24. a delivery pipe; 25. a second solenoid control valve; 26. recovering the tin box under negative pressure; 27. a tin liquid suction port; 28. a molten tin outlet; 29. a recovery pipe; 30. a third solenoid control valve; 31. a first vertical slide hole; 32. a first vertical strut; 33. a first strut receiving plate; 34. the connecting flat plate is inclined; 35. a second vertical slide hole; 36. a second vertical strut; 37. a second strut receiving plate; 38. vertically connecting the flat plates; 39. a limiting strip; 40. a horizontal baffle; 41. the cutter hook is inclined.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
The invention relates to an SMT printing jig, which comprises a main body structure, a jig body 2, an FR4 board 3, a PCB circuit board, an SMT printing steel mesh 4 and a scraping device assembly 5, wherein a steel mesh gripper 6 and a transverse position adjusting mechanism are arranged on the jig body 1, the transverse position adjusting mechanism is a screw nut transmission mechanism 7, a sliding plate 8 is arranged on a nut of the screw nut transmission mechanism 7, the back of the scraping device assembly 5 is fixed with the sliding plate 8, the jig body 2 is arranged on the jig body 1 and is kept horizontal, the FR4 board 3 is fixed on the jig body 2, the PCB circuit board is arranged between the FR4 board 3 and the SMT printing steel mesh 4, the steel mesh gripper 6 is used for fixing the SMT printing steel mesh 4, and the screw nut transmission mechanism 7 can realize the reciprocating motion of the scraping device assembly 5.
The scraping and printing device assembly 5 comprises a high-pressure tin storage box 9, a scraper driving device assembly, a recovery knife driving device assembly, a tin paste stirring device assembly and a stirring box body 10, the high-pressure tin storage box 9 is detachably and fixedly connected with the sliding plate 8 through bolts, cylinder body supports 11 are arranged on two sides of the high-pressure tin storage box 9, the scraper driving device assembly comprises a scraper cylinder 12, a scraper driving connecting piece and a scraper body 13, the recovery knife driving device assembly comprises a recovery knife cylinder 14, a recovery knife driving connecting piece and a recovery knife body 15, the scraper cylinder 12 and the recovery knife cylinder 14 are respectively arranged on the cylinder body support 11 at the two sides of the high-pressure tin storage box 9, the scraper cylinder 12 drives the scraper blade body 13 to move up and down through the scraper driving connecting piece, and the recovery blade cylinder 14 drives the recovery blade body 15 to move up and down through the recovery blade driving connecting piece. When the solder paste is printed, the scraper cylinder 12 drives the scraper body 13 to move downwards through the scraper driving connecting piece so as to be in contact with the SMT printing steel mesh 4, and the recovery knife cylinder 14 drives the recovery knife body 15 to move upwards through the recovery knife driving connecting piece so as to be in contact with the SMT printing steel mesh 4. And during the recovery process of redundant solder paste: the scraper cylinder 12 drives the scraper body 13 to move upwards through the scraper driving connecting piece so as not to contact with the SMT printing steel mesh 4, and the recovery cutter cylinder 14 drives the recovery cutter body 15 to move downwards through the recovery cutter driving connecting piece until contacting with the SMT printing steel mesh 4.
The tin cream agitating unit assembly and the agitating box body 10 are arranged between the scraper driving unit assembly and the recovery knife driving unit assembly, two sides of the top surface of the agitating box body 10 are connected with the bottom of the high-pressure tin storage box 9 through bearing seats 16, a tin leakage port 17 is arranged at the bottom of the agitating box body 10, a first electromagnetic control valve 18 is arranged at the tin leakage port 17, and the first electromagnetic control valve 18 controls the opening and closing of the tin leakage port 17.
The top of the stirring box body 10 is provided with a strip-shaped sliding hole 19, the solder paste stirring device assembly comprises a driving motor 20 and a thread transmission mechanism, the thread transmission mechanism comprises a transmission screw rod 21 and a driven nut 22, two ends of the transmission screw rod 21 are matched with rolling bearings in the bearing seat frame 16, the driving motor 20 drives the transmission screw rod 21 to rotate, and the transmission screw rod 21 rotates to drive the driven nut 22 to horizontally move. The driven nut 22 is provided with a stirring plate 23, the stirring plate 23 penetrates through the strip-shaped slide hole 19 and is arranged inside the stirring box body 10, and the reciprocating motion of the driven nut 22 drives the stirring plate 23 to reciprocate inside the stirring box body 10 along the strip-shaped slide hole 19. The moving direction of the driven nut 22 and the stirring plate 23 is controlled by controlling the rotating direction of the driving motor 20.
The inner cavity of the high-pressure tin storage box 9 is communicated with the inner cavity of the stirring box body 10 through a conveying pipe 24, and a second electromagnetic control valve 25 is arranged at the communication position of the conveying pipe 24 and the inner cavity of the high-pressure tin storage box 9. The second electromagnetic control valve 25 controls the communication between the delivery pipe 24 and the inner cavity of the stirring box body 10.
The scraping and printing device assembly 5 further comprises a negative pressure tin recovery box 26, the negative pressure tin recovery box 26 is arranged at the top of the high-pressure tin storage box 9, a cavity partition plate is arranged between the inner cavity of the negative pressure tin recovery box 26 and the inner cavity of the high-pressure tin storage box 9, and an electromagnetic control communication valve is arranged on the cavity partition plate; when the device is idle, the air pressure in the high-pressure tin storage box 9 and the air pressure in the pressure recovery tin box are balanced through adjustment, the electromagnetic control communication valve is opened, and the tin paste recovered in the negative pressure recovery tin box 26 is discharged into the high-pressure tin storage box 9 again for use.
A tin liquid suction port 27 is formed in one side, close to the scraper body 13, of the bottom of the recovery cutter body 15, a tin liquid outlet 28 is formed in one side of the top of the recovery cutter body 15, the tin liquid outlet 28 is communicated with an inner cavity of the negative pressure tin recovery box 26 through a recovery pipe 29, and a third electromagnetic control valve 30 is arranged at the joint of the tin liquid outlet 28 and the recovery pipe 29. The redundant solder paste on the SMT printing steel mesh 4 can be scraped and collected on the recovery knife body 15, and under the negative pressure action of the negative pressure recovery tin box 26, the redundant solder paste can be sucked from the tin liquid suction port 27 on the recovery knife body 15, and then enters the inner cavity of the negative pressure recovery tin box 26 through the inner cavity of the recovery knife body 15, the tin liquid outlet 28 and the recovery tube 29 in sequence, so that the recovery is completed. The third electromagnetic control valve 30 controls the communication and closing between the tin liquid outlet 28 and the recovery pipe 29.
Two first vertical sliding holes 31 are formed in a cylinder body support 11 where the scraper cylinder 12 is located, the scraper driving connecting piece comprises two first vertical sliding columns 32 and a first sliding column connecting plate 33, the tops of the two first vertical sliding columns 32 are connected through the first sliding column connecting plate 33, the two first vertical sliding columns 32 are connected with the two first vertical sliding holes 31 in a sliding mode, the center of the bottom surface of the first sliding column connecting plate 33 is connected with an expansion rod of the scraper cylinder 12, inclined connecting flat plates 34 are arranged at the bottoms of the two first vertical sliding columns 32, and the scraper body 13 is fixed to the bottoms of the inclined connecting flat plates 34 through bolts; the telescopic motion of the telescopic rod of the scraper cylinder 12 can drive the first vertical sliding column 32 to telescopically slide in the first vertical sliding hole 31, and the first vertical sliding hole 31 is a vertical hole, so that the vertical movement of the first vertical sliding column 32, the inclined connecting flat plate 34 and the scraper body 13 can be ensured.
Two second vertical sliding holes 35 are formed in the cylinder body support 11 where the recovery knife cylinder 14 is located, the recovery knife driving connecting piece comprises two second vertical sliding columns 36 and a second sliding column connecting plate 37, the tops of the two second vertical sliding columns 36 are connected through the second sliding column connecting plate 37, the two second vertical sliding columns 36 are connected with the two second vertical sliding holes 35 in a sliding mode, and the center position of the bottom surface of the second sliding column connecting plate 37 is connected with an expansion rod of the recovery knife cylinder 14; the bottom of the two second vertical sliding columns 36 is provided with a vertical connecting flat plate 38, and the bottom of the recovery knife body 15 and the bottom of the vertical connecting flat plate 38 are fixed through bolts. The telescopic motion of the telescopic rod of the recovery knife cylinder 14 can drive the second vertical sliding column 36 to telescopically slide in the second vertical sliding hole 35, and the second vertical sliding hole 35 is a vertical hole, so that the vertical movement of the second vertical sliding column 36, the vertical connecting flat plate 38 and the recovery knife body 15 can be ensured.
One side of the stirring box body 10, which is close to the scraper cylinder 12, is provided with a limiting strip 39, and the top of the inclined connecting flat plate 34 is provided with a horizontal baffle 40 which is matched with the limiting strip 39. When the inclined connecting plate 34 and the scraper body 13 move downwards and the horizontal baffle 40 contacts the limiting strip 39, the scraper body 13 just contacts the SMT printing steel mesh 4, so that the scraper body 13 is prevented from moving downwards excessively to damage the SMT printing steel mesh 4.
The end of the recovered scraper body 15 is provided with an inclined cutter hook 41, and the inclined cutter hook 41 faces one side of the scraper body 13. The arrangement of the inclined cutter hook 41 can enable the redundant solder paste to be accumulated and stopped at the inclined cutter hook 41, and the recovery of the redundant solder paste is convenient.
The bottom surface of the stirring box body 10 is an inclined conical surface. The bottom surface of the stirring box body 10 is set to be an inclined conical surface, so that solder paste in the stirring box body 10 can flow out from the solder leakage opening 17 conveniently.
The using method comprises the following steps:
when the solder paste is printed, the scraper cylinder 12 drives the scraper body 13 to move downwards through the scraper driving connecting piece so as to be in contact with the SMT printing steel mesh 4, and the recovery knife cylinder 14 drives the recovery knife body 15 to move upwards through the recovery knife driving connecting piece so as to be in contact with the SMT printing steel mesh 4. According to the method, a solder paste stirring device assembly automatically stirs solder paste in the stirring box body 10, a first electromagnetic control valve 18 is controlled to be opened after the solder paste is stirred, the stirred solder paste automatically leaks to the position above an opening position of an SMT printing steel mesh 4 through a solder leakage opening 17 to wait for use, the solder leakage opening 17 is in a strip shape, and the strip length of the solder leakage opening 17 is matched with the length of a PCB to be brushed. Lead screw drive mechanism 7 can realize scraping the reciprocating motion of seal device assembly 5, and lead screw corotation drives scraper cutter body 13 and scrapes once to one side, and the solder paste leaks printing to the PCB circuit board pad promptly to the solder paste can cover whole PCB circuit board, can not appear scribbling hourglass discontinuity, leak the emergence of brushing the phenomenon, thereby guarantee the product quality, consequently this device has abandoned a series of not enough that manual stirring solder paste brought among the traditional art, adopts automatic stirring solder paste, the mode of automatic releasing solder paste has improved the production efficiency of product.
And during the recovery process of redundant solder paste: the scraper cylinder 12 drives the scraper body 13 to move upwards through the scraper driving connecting piece so as not to contact with the SMT printing steel mesh 4, and the recovery cutter cylinder 14 drives the recovery cutter body 15 to move downwards through the recovery cutter driving connecting piece until contacting with the SMT printing steel mesh 4. The transverse position adjusting mechanism (the screw nut transmission mechanism 7) drives the whole scraping printing device assembly 5 to move towards the direction of the scraper blade body 13 (namely, the movement direction is opposite to the movement direction of the scraper blade body 13 when the tin cream is scraped), redundant tin cream on the SMT printing steel mesh 4 can be scraped and collected on the recovery blade body 15 in the movement process, under the negative pressure action of the negative pressure recovery tin box 26, the redundant tin cream can be sucked from the tin liquid suction port 27 on the recovery blade body 15, and then enters the inner cavity of the negative pressure recovery tin box 26 through the inner cavity of the recovery blade body 15, the tin liquid outlet 28 and the recovery pipe 29 in sequence, so that the recovery is completed.
When the next PCB is replaced, the tin box 9 is stored at high pressure to convey quantitative tin paste into the stirring box body 10 in the time period, the tin paste stirring device assembly finishes stirring the tin paste, after the next PCB is replaced, the first electromagnetic control valve 18 is controlled to be opened, the stirred tin paste automatically leaks to the upper side of the opening position of the SMT printing steel mesh 4 through the tin leakage port 17 to wait for use, and the scraping printing of the next PCB and the recovery of redundant tin paste are carried out. The time for stirring the solder paste and coating the solder paste on the SMT printing steel mesh 4 is greatly saved, the solder paste is automatically stirred and applied, and the production efficiency of products is greatly improved.
When the device is idle, the air pressure in the high-pressure tin storage box 9 and the air pressure in the pressure recovery tin box are balanced through adjustment, the electromagnetic control communication valve is opened, and the tin paste recovered in the negative pressure recovery tin box 26 is discharged into the high-pressure tin storage box 9 again for use.
Claims (5)
1. The utility model provides a SMT printing jig, includes organism (1), tool body (2), FR4 board (3), PCB circuit board, SMT printing steel mesh (4) and scrapes seal device assembly (5), be equipped with steel mesh tongs (6), transverse position adjustment mechanism on organism (1), transverse position adjustment mechanism is lead screw nut drive mechanism (7), be equipped with slip plate (8) on the screw nut of lead screw nut drive mechanism (7), it is fixed its characterized in that with slip plate (8) to scrape seal device assembly (5) back: the scraping and printing device assembly (5) comprises a high-pressure storage tin box (9), a scraper driving device assembly, a recovery knife driving device assembly, a tin paste stirring device assembly and a stirring box body (10), wherein the high-pressure storage tin box (9) is connected with a sliding plate block (8), cylinder body supports (11) are arranged on two sides of the high-pressure storage tin box (9), the scraper driving device assembly comprises a scraper cylinder (12), a scraper driving connecting piece and a scraper knife body (13), the recovery knife driving device assembly comprises a recovery knife cylinder (14), a recovery knife driving connecting piece and a recovery knife body (15), the scraper cylinder (12) and the recovery knife cylinder (14) are respectively arranged on the cylinder body supports (11) on two sides of the high-pressure storage tin box (9), and the scraper cylinder (12) drives the scraper knife body (13) to move up and down through the scraper driving connecting piece, the recovery knife cylinder (14) drives the recovery knife body (15) to move up and down through the recovery knife driving connecting piece; the tin paste stirring device assembly and the stirring box body (10) are arranged between the scraper driving device assembly and the recovery knife driving device assembly, two sides of the top surface of the stirring box body (10) are connected with the bottom of the high-pressure tin storage box (9) through bearing seat frames (16), a tin leakage opening (17) is formed in the bottom of the stirring box body (10), a first electromagnetic control valve (18) is arranged at the tin leakage opening (17), a strip-shaped slide hole (19) is formed in the top of the stirring box body (10), the tin paste stirring device assembly comprises a driving motor (20) and a thread transmission mechanism, the thread transmission mechanism comprises a driving screw rod (21) and a driven nut (22), two ends of the driving screw rod (21) are matched with rolling bearings in the bearing seat frames (16), the driving motor (20) drives the driving screw rod (21) to rotate, a stirring plate (23) is arranged on the driven nut (22), the stirring plate (23) penetrates through the strip-shaped sliding hole (19) and is arranged inside the stirring box body (10), and the reciprocating motion of the driven nut (22) drives the stirring plate (23) to reciprocate inside the stirring box body (10) along the strip-shaped sliding hole (19); the inner cavity of the high-pressure tin storage box (9) is communicated with the inner cavity of the stirring box body (10) through a conveying pipe (24), a second electromagnetic control valve (25) is arranged at the communication position of the conveying pipe (24) and the inner cavity of the high-pressure tin storage box (9), the scraping and printing device assembly (5) further comprises a negative pressure tin recovery box (26), the negative pressure tin recovery box (26) is arranged at the top of the high-pressure tin storage box (9), a cavity partition plate is arranged between the inner cavity of the negative pressure tin recovery box (26) and the inner cavity of the high-pressure tin storage box (9), and an electromagnetic control communication valve is arranged on the cavity partition plate; one side of the bottom of the recovery knife body (15) close to the scraper body (13) is provided with a tin liquid suction port (27), one side of the top of the recovery knife body (15) is provided with a tin liquid outlet (28), the tin liquid outlet (28) is communicated with an inner cavity of a negative pressure recovery tin box (26) through a recovery pipe (29), and a third electromagnetic control valve (30) is arranged at the joint of the tin liquid outlet (28) and the recovery pipe (29).
2. An SMT printing jig according to claim 1, wherein: the scraper is characterized in that two first vertical sliding holes (31) are formed in a cylinder body support (11) where the scraper cylinder (12) is located, the scraper driving connecting piece comprises two first vertical sliding columns (32) and a first sliding column connecting plate (33), the tops of the two first vertical sliding columns (32) are connected through the first sliding column connecting plate (33), the two first vertical sliding columns (32) are connected with the two first vertical sliding holes (31) in a sliding mode, the center position of the bottom surface of the first sliding column connecting plate (33) is connected with an expansion rod of the scraper cylinder (12), inclined connecting flat plates (34) are arranged at the bottoms of the two first vertical sliding columns (32), and scraper bodies (13) are fixed to the bottoms of the inclined connecting flat plates (34) through bolts; the recovery knife is characterized in that two second vertical sliding holes (35) are formed in a cylinder body support (11) where the recovery knife cylinder (14) is located, the recovery knife driving connecting piece comprises two second vertical sliding columns (36) and a second sliding column connecting plate (37), the tops of the two second vertical sliding columns (36) are connected through the second sliding column connecting plate (37), the two second vertical sliding columns (36) are connected with the two second vertical sliding holes (35) in a sliding mode, the center position of the bottom surface of the second sliding column connecting plate (37) is connected with a telescopic rod of the recovery knife cylinder (14), a vertical connecting flat plate (38) is arranged at the bottom of the two second vertical sliding columns (36), and the bottom of a recovery knife body (15) and the bottom of the vertical connecting flat plate (38) are fixed through bolts.
3. An SMT printing jig according to claim 2, wherein: the stirring box body (10) is close to one side of the scraper cylinder (12) and is provided with a limiting strip (39), and the top of the inclined connecting flat plate (34) is provided with a horizontal baffle (40) adaptive to the position of the limiting strip (39).
4. An SMT printing jig according to claim 1, wherein: the tail end of the recovery cutter body (15) is provided with an inclined cutter hook (41), and the inclined cutter hook (41) faces one side of the scraper cutter body (13).
5. An SMT printing jig according to claim 1, wherein: the bottom surface of the stirring box body (10) is an inclined conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810338266.5A CN108601240B (en) | 2018-04-16 | 2018-04-16 | SMT printing jig |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810338266.5A CN108601240B (en) | 2018-04-16 | 2018-04-16 | SMT printing jig |
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| Publication Number | Publication Date |
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| CN108601240A CN108601240A (en) | 2018-09-28 |
| CN108601240B true CN108601240B (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810338266.5A Expired - Fee Related CN108601240B (en) | 2018-04-16 | 2018-04-16 | SMT printing jig |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111451075B (en) * | 2020-04-25 | 2021-09-28 | 温州金裕植绒鞋材有限公司 | Flocking is with automatic mucilage binding that beats |
| CN113878196B (en) * | 2021-11-03 | 2023-03-14 | 深圳市思创新精密科技有限公司 | Device is paintd to SMT laser template surface tin cream |
| CN114227050B (en) * | 2022-01-13 | 2023-09-05 | 北京金雨科创自动化技术股份有限公司 | IGBT production processing system of frequency converter |
| CN116419498B (en) * | 2023-06-07 | 2023-08-08 | 方泰(广东)科技有限公司 | Manufacturing device and manufacturing process for circuit board production |
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| JPH0732717A (en) * | 1993-07-16 | 1995-02-03 | Matsushita Electric Ind Co Ltd | Printing method |
| JP2003025540A (en) * | 2001-07-12 | 2003-01-29 | Matsushita Electric Ind Co Ltd | Screen printer |
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| CN1655933A (en) * | 2002-05-29 | 2005-08-17 | 谷电机工业株式会社 | Screen printing apparatus |
| JP2006175692A (en) * | 2004-12-22 | 2006-07-06 | Matsushita Electric Ind Co Ltd | Screen printing equipment |
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| CN206941189U (en) * | 2017-05-20 | 2018-01-30 | 三门利通鞋材制造有限公司 | A kind of gluing machine |
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- 2018-04-16 CN CN201810338266.5A patent/CN108601240B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0732717A (en) * | 1993-07-16 | 1995-02-03 | Matsushita Electric Ind Co Ltd | Printing method |
| JP2003025540A (en) * | 2001-07-12 | 2003-01-29 | Matsushita Electric Ind Co Ltd | Screen printer |
| CN1181975C (en) * | 2001-07-12 | 2004-12-29 | 松下电器产业株式会社 | Silk-screen printing equipment and silk-screen printing method |
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| JP2006175692A (en) * | 2004-12-22 | 2006-07-06 | Matsushita Electric Ind Co Ltd | Screen printing equipment |
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| CN206941189U (en) * | 2017-05-20 | 2018-01-30 | 三门利通鞋材制造有限公司 | A kind of gluing machine |
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| Publication number | Publication date |
|---|---|
| CN108601240A (en) | 2018-09-28 |
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