CN209794839U - Solder paste printing machine for surface mounting - Google Patents
Solder paste printing machine for surface mounting Download PDFInfo
- Publication number
- CN209794839U CN209794839U CN201920156977.0U CN201920156977U CN209794839U CN 209794839 U CN209794839 U CN 209794839U CN 201920156977 U CN201920156977 U CN 201920156977U CN 209794839 U CN209794839 U CN 209794839U
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- steel mesh
- lifting
- circuit board
- scraper
- rack
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Abstract
The utility model provides a solder paste printing machine for surface mounting, which comprises a frame, wherein a workbench for placing a circuit board is fixed in the frame, a vertical jack is arranged in the workbench, an air suction pipe with an upward outlet is arranged in the jack, the lower end of the air suction pipe is connected with a negative pressure generating device, and the air suction pipe can absorb the circuit board on the workbench; the steel mesh is positioned above the circuit board, a steel mesh lifting frame fixedly connected with the steel mesh is installed at the top in the rack, the steel mesh lifting frame can change the height of the steel mesh to enable the steel mesh to be pressed on the circuit board, the steel mesh lifting frame comprises two lifting assemblies respectively positioned at the left side and the right side of the rack, each lifting assembly comprises a lifting servo motor and a connecting rod meshed and connected to an output shaft of the lifting servo motor, the lifting servo motor is installed outside the top wall of the rack, and the lower end of the connecting rod is in threaded connection with a mounting hole; and the top in the rack is also provided with a scraper driving device and a scraper which are connected with each other, and the scraper driving device can drive the scraper to move on the surface of the steel mesh.
Description
Technical Field
The utility model belongs to the technical field of circuit board processing equipment, concretely relates to solder paste printing machine for surface mounting.
Background
The working process of the solder paste printer is as follows: the circuit board to be printed is fixed on the printing positioning table, the steel mesh is fixed on the circuit board, and then solder paste is printed on the corresponding bonding pad of the circuit board through the steel mesh by a scraper of the printing machine. The common problem of solder paste printing machine is that in the printing process of solder paste, the steel mesh is not closely attached to the circuit board, and is unstable, which leads to the reduction of printing accuracy, and causes the quality problems of offset welding, false welding, deflection and the like of the surface-mounted components on the circuit board.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a solder paste printing machine for surface mounting can fix circuit board and steel mesh steadily, guarantees the accuracy and the stability of solder paste printing.
The utility model provides a following technical scheme:
A surface mounting solder paste printer comprises a frame, wherein a workbench for placing a circuit board is fixed in the frame, a vertical insertion hole is formed in the workbench, an air suction pipe with an upward outlet is installed in the insertion hole, the lower end of the air suction pipe is connected with a negative pressure generating device, and the air suction pipe can absorb the circuit board on the workbench; the steel mesh is positioned above the circuit board, a steel mesh lifting frame fixedly connected with the steel mesh is installed at the top in the rack, the steel mesh lifting frame can change the height of the steel mesh to enable the steel mesh to be pressed on the circuit board, the steel mesh lifting frame comprises two lifting assemblies respectively positioned at the left side and the right side of the rack, each lifting assembly comprises a lifting servo motor and a connecting rod connected to an output shaft of the lifting servo motor, the lifting servo motors are installed outside the top wall of the rack, and the lower ends of the connecting rods are in threaded connection with mounting holes in the; and the top in the rack is also provided with a scraper driving device and a scraper which are connected with each other, and the scraper driving device can drive the scraper to move up and down or move left and right relative to the surface of the steel mesh.
Preferably, the lifting assembly further comprises a guide post, the guide post is fixed on the rack, a guide hole matched with the connecting rod is formed in the guide post, and the connecting rod penetrates through the guide hole to be connected with the lifting servo motor.
preferably, the top of the guide post is bolted to the frame via a flange, and the underside of the guide post is fixed in a ferrule which is welded horizontally to the side wall of the frame.
Preferably, the scraper driving device is installed at the top in the rack and comprises a driving motor, a lead screw connected with an output shaft of the driving motor, a moving block, a machine shell and a telescopic servo motor, the moving block is installed on the lead screw and can horizontally move along the lead screw, the upper end of the machine shell is fixedly connected with the moving block, the telescopic servo motor is installed in the machine shell, and the output shaft of the telescopic servo motor is connected with the scraper.
Preferably, the left side and the right side of the workbench are respectively provided with two insertion holes, and the air suction pipes in the two insertion holes are connected to the negative pressure generating device.
Preferably, the jack is provided with an internal thread, the outer wall of the part, inserted into the jack, of the air suction pipe is provided with an external thread matched with the internal thread of the jack, and the air suction pipe is in threaded connection with the jack.
The utility model has the advantages that: the air suction pipe is connected with the negative pressure generating device, the air suction pipe is arranged in the workbench, the circuit board can be stably adsorbed on the workbench, and the circuit board can not slightly move when brushing tin, so that the tin brushing accuracy is ensured, and the printing quality is improved; when the tin brushing is finished, the negative pressure between the circuit board and the workbench can be eliminated by only closing the switch of the negative pressure generating device, so that the circuit board is moved out, and the operation is convenient; the utility model discloses a lifting unit can arrange the steel mesh pressure in on the circuit board, recycles the mesh of scraper in to the steel mesh and evenly brushes the tin, and lifting unit can change the height of steel mesh in a flexible way, is convenient for place and the circuit board of taking to the steel mesh liftable to can be applicable to the circuit board of different thickness in a flexible way, application scope is wide.
Drawings
the accompanying drawings 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 invention and not to limit the invention. In the drawings:
Fig. 1 is a schematic structural diagram of the present invention;
Labeled as: 1. a frame; 2. a circuit board; 3. a work table; 4. an air intake duct; 5. a negative pressure generating device; 6. a steel mesh; 7. a lifting servo motor; 8. a connecting rod; 9. a scraper; 10. a guide post; 11. a ferrule; 12. a drive motor; 13. a lead screw; 14. a moving block; 15. a housing; 16. a telescopic servo motor.
Detailed Description
As shown in fig. 1, a surface mounting solder paste printer includes a frame 1, a workbench 3 for placing a circuit board 2 is fixed in the frame 1, a vertical jack is arranged in the workbench 3, an air suction pipe 4 with an upward outlet is installed in the jack, the lower end of the air suction pipe 4 is connected with a negative pressure generating device 5, the negative pressure generating device 5 can be a commonly used vacuum generator, a negative pressure pump, etc., the air suction pipe 4 can stably adsorb the circuit board 2 on the workbench 3, and the circuit board 2 is prevented from slightly moving to reduce the accuracy of solder paste printing when the solder paste is printed; the steel mesh 6 is positioned above the circuit board 2, the steel mesh crane fixedly connected with the steel mesh 6 is installed at the top in the rack 1, and the steel mesh crane can change the height of the steel mesh, so that the steel mesh can be stably pressed on the circuit board 2, and the steel mesh 6 can be lifted, and the circuit board 2 can be conveniently taken and placed; the steel mesh lifting frame comprises two lifting assemblies which are respectively positioned on the left side and the right side of the rack, each lifting assembly comprises a lifting servo motor 7 and a connecting rod 8 which is meshed and connected to an output shaft of the lifting servo motor 7, the lifting servo motors 7 are installed outside the top wall of the rack 1, and the lower ends of the connecting rods 8 are in threaded connection with mounting holes in the steel meshes 6, so that the steel meshes 6 can be detached from the connecting rods 8, and the steel meshes matched with the steel meshes can be replaced according to circuit boards of different models; the top in the frame 1 still installs interconnect's scraper drive arrangement and scraper 9, and scraper drive arrangement can drive scraper 9 and remove or reciprocate about the surface of steel mesh 6, brushes the tin cream on steel mesh surface in the mesh of steel mesh, and then prints the tin cream on the pad of circuit board.
the lifting assembly further comprises a guide post 10, the guide post 10 is fixed on the rack 1, a guide hole matched with the connecting rod 8 is formed in the guide post 10, and the connecting rod 8 penetrates through the guide hole to be connected with the lifting servo motor 7. The guide post 10 can improve the stability of the lifting process of the connecting rod, and prevent the long connecting rod 8 from shaking left and right to reduce the matching accuracy of the mesh of the steel mesh 6 and the bonding pad on the circuit board 2.
The top of the guide post 10 is bolted with the frame through a flange, the lower side of the guide post 10 is fixed in a hoop 11, and the hoop 11 is welded on the side wall of the frame 1 horizontally. The ferrule 11 can further improve the stability of the guide post 10 and prevent the guide post 10 from shaking left and right.
The scraper driving device is arranged at the top in the rack and comprises a driving motor 12, a lead screw 13 connected with an output shaft of the driving motor 12, a moving block 14, a shell 15 and a telescopic servo motor 16, wherein the moving block 14 is arranged on the lead screw 13, and when the driving motor 12 works, the lead screw 13 can drive the moving block 14 to horizontally move along the lead screw 13; the upper end of a shell 15 of the scraper driving device is fixedly connected with a moving block 14, and the shell 15 and the scraper 9 are driven to synchronously move when the moving block 14 moves; the telescopic servo motor 16 is arranged in the shell 15, an output shaft of the telescopic servo motor 16 is connected with the scraper 9, and before solder paste is printed, the telescopic servo motor 16 lifts the scraper 9, so that the circuit board 2 can be placed conveniently and the steel mesh 6 can be installed conveniently; when printing solder paste, the telescopic servo motor 16 lowers the scraper 9, so that the bottom end of the scraper 9 is pressed against the surface of the steel mesh 6, and the driving motor 12 moves the scraper 9 again to brush the solder paste into meshes of the steel mesh 6 uniformly.
Two jacks are symmetrically arranged on the left side and the right side of the workbench 3 respectively, and the air suction pipes 4 in the two jacks are connected to the negative pressure generating device 5, so that the negative pressure can be uniformly applied to the left side and the right side of the circuit board 2 by the two symmetrical air suction pipes 4, and the stress balance of the circuit board 2 is improved.
The jack is equipped with the internal thread, and breathing pipe 4 inserts and is equipped with the external screw thread that matches with the internal thread of jack on the outer wall of jack part, and breathing pipe 4 and jack threaded connection, firm in connection between the two, the negative pressure of production is also more stable.
The lifting servo motor 7, the negative pressure generating device 5, the driving motor 12 and the telescopic servo motor 16 of the embodiment are all connected with an external power supply.
In the initial state, the connecting rods 8 and the scrapers 9 are in a lifting state, the proper steel meshes 6 are selected and installed on the two connecting rods 8, a gap is formed between the steel meshes 6 and the workbench 3, the gap can be just inserted into the circuit board 2 and allows the circuit board 2 to move on the workbench 3, the circuit board 2 to be brushed with tin is placed on the workbench 3, the positions of mark holes on the circuit board 2 and the steel meshes 6 are observed, and the bonding pads of the circuit board 2 are aligned to meshes of the steel meshes 6; then, a switch of a negative pressure generating device 5 is started, and the circuit board 2 is stably adsorbed on the workbench 3 by using the air suction pipe 4; then starting the lifting servo motor 7, slightly lowering the steel mesh 6, and tightly attaching and pressing the steel mesh 6 on the circuit board 2; and coating a layer of solder paste on the surface of the steel mesh 6, starting the telescopic servo motor 16 and the driving motor 12 in sequence to enable the scraper 9 to be pressed against the surface of the steel mesh 6 and move from left to right along the surface of the steel mesh 6, and extruding the solder paste into the bonding pad of the circuit board 2 through the steel mesh. After printing, the scraper 9 and the steel mesh 6 are lifted first, and at this time, the steel mesh 6 should be lifted to a certain height to be away from the circuit board 2, and then the negative pressure generating device 5 is closed to take the circuit board 2 out of the workbench 3.
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 modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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 (6)
1. A solder paste printer for surface mounting is characterized by comprising a rack, wherein a workbench for placing a circuit board is fixed in the rack, a vertical insertion hole is formed in the workbench, an air suction pipe with an upward outlet is installed in the insertion hole, the lower end of the air suction pipe is connected with a negative pressure generating device, and the air suction pipe can absorb the circuit board on the workbench; a steel mesh is placed above the circuit board, a steel mesh lifting frame fixedly connected with the steel mesh is installed at the top in the rack, the steel mesh lifting frame can change the height of the steel mesh to enable the steel mesh to be pressed on the circuit board, the steel mesh lifting frame comprises two lifting assemblies respectively located on the left side and the right side of the rack, each lifting assembly comprises a lifting servo motor and a connecting rod connected to an output shaft of the lifting servo motor, the lifting servo motors are installed outside the top wall of the rack, and the lower ends of the connecting rods are in threaded connection with mounting holes in the steel mesh; and the top in the rack is also provided with a scraper driving device and a scraper which are connected with each other, and the scraper driving device can drive the scraper to move up and down or move left and right relative to the surface of the steel mesh.
2. The solder paste printer for surface mounting according to claim 1, wherein the elevating assembly further comprises a guide post fixed to the frame, a guide hole matching the link is formed in the guide post, and the link passes through the guide hole and is connected to the elevating servo motor.
3. A surface mount solder paste printer as claimed in claim 2, wherein the top of the guiding post is bolted to the frame via a flange, and the underside of the guiding post is fixed in a collar welded horizontally to the side wall of the frame.
4. The solder paste printer according to claim 2, wherein the scraper driving device is mounted on a top portion of the frame, the scraper driving device includes a driving motor, a lead screw, a moving block, a housing, and a telescopic servo motor, the lead screw is connected to an output shaft of the driving motor, the moving block is mounted on the lead screw, the moving block is horizontally movable along the lead screw, an upper end of the housing is fixedly connected to the moving block, the telescopic servo motor is mounted in the housing, and an output shaft of the telescopic servo motor is connected to the scraper.
5. A surface mount solder paste printer as claimed in claim 4, wherein two insertion holes are symmetrically provided on each of the left and right sides of the table, and the suction ducts in both insertion holes are connected to the negative pressure generating device.
6. The machine of claim 5, wherein the insertion hole has an internal thread, and the portion of the suction pipe inserted into the insertion hole has an external thread matching the internal thread of the insertion hole, and the suction pipe is connected to the insertion hole by a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920156977.0U CN209794839U (en) | 2019-01-29 | 2019-01-29 | Solder paste printing machine for surface mounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920156977.0U CN209794839U (en) | 2019-01-29 | 2019-01-29 | Solder paste printing machine for surface mounting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209794839U true CN209794839U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920156977.0U Active CN209794839U (en) | 2019-01-29 | 2019-01-29 | Solder paste printing machine for surface mounting |
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| Country | Link |
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| CN (1) | CN209794839U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978753A (en) * | 2019-12-19 | 2020-04-10 | 中国航空制造技术研究院 | Screen printing coating positioning device and method for foil solder stop agent |
| CN112192944A (en) * | 2020-09-29 | 2021-01-08 | 西安微电子技术研究所 | Solder paste printing and demolding device and method for CCGA device |
| CN112918079A (en) * | 2021-01-22 | 2021-06-08 | 徐州中辉光伏科技有限公司 | Solar photovoltaic screen printing equipment with dust removal function |
| CN113103732A (en) * | 2021-02-26 | 2021-07-13 | 深圳市兴荣昌电子有限公司 | Solder paste printer for producing LED display and printing method thereof |
| CN113954505A (en) * | 2021-09-18 | 2022-01-21 | 深圳市国芯通科技有限公司 | Solder printing equipment for circuit board |
| CN114393271A (en) * | 2022-02-15 | 2022-04-26 | 惠州市则成技术有限公司 | Distribution tool capable of flexibly allocating SMT soldering paste amount |
-
2019
- 2019-01-29 CN CN201920156977.0U patent/CN209794839U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978753A (en) * | 2019-12-19 | 2020-04-10 | 中国航空制造技术研究院 | Screen printing coating positioning device and method for foil solder stop agent |
| CN112192944A (en) * | 2020-09-29 | 2021-01-08 | 西安微电子技术研究所 | Solder paste printing and demolding device and method for CCGA device |
| CN112918079A (en) * | 2021-01-22 | 2021-06-08 | 徐州中辉光伏科技有限公司 | Solar photovoltaic screen printing equipment with dust removal function |
| CN113103732A (en) * | 2021-02-26 | 2021-07-13 | 深圳市兴荣昌电子有限公司 | Solder paste printer for producing LED display and printing method thereof |
| CN113954505A (en) * | 2021-09-18 | 2022-01-21 | 深圳市国芯通科技有限公司 | Solder printing equipment for circuit board |
| CN114393271A (en) * | 2022-02-15 | 2022-04-26 | 惠州市则成技术有限公司 | Distribution tool capable of flexibly allocating SMT soldering paste amount |
| CN114393271B (en) * | 2022-02-15 | 2023-09-26 | 惠州市则成技术有限公司 | Distribution tool capable of flexibly distributing SMT solder paste dosage |
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