CN220661974U

CN220661974U - Scraper structure of solder paste printer

Info

Publication number: CN220661974U
Application number: CN202322401204.3U
Authority: CN
Inventors: 刘苗
Original assignee: Beijing Yixin Printing Co ltd
Current assignee: Beijing Yixin Printing Co ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2024-03-26
Anticipated expiration: 2033-09-05

Abstract

The utility model belongs to the technical field of the solder paste printing machine technique and specifically relates to a scraper structure of solder paste printing machine is related to, including the movable block, the upper surface of movable block is fixed with first cylinder and second cylinder, and the piston rod bottom surface of first cylinder and second cylinder is fixed with first mount and second mount respectively, and the bottom mounting of first mount and second mount has first blade and second blade, the both ends of first mount and second mount are provided with anti-overflow subassembly respectively, and anti-overflow subassembly includes the spill plate, and the one end of spill plate and the both ends fixed surface of first mount and second mount, the other end of spill plate extends between towards first blade and second blade, and the spill plate is the hang plate, and the one end that deviates from each other by the spill plate is inclined to being close to central point between first blade and the second blade gradually, has the advantage that improves the solder paste, improves work efficiency.

Description

Scraper structure of solder paste printer

Technical Field

The application relates to the technical field of solder paste printers, in particular to a scraper structure of a solder paste printer.

Background

The solder paste is also called as a gray paste, is a novel welding material generated along with STM, is a paste mixture formed by mixing soldering tin powder, soldering flux, other surfactants, thixotropic agents and the like, and is mainly used for welding electronic components such as PCB surface resistance, capacitance, IC and the like in the STM industry.

At present, when the tin paste is used, after the tin paste is added on a steel mesh, the scraper is used for back and forth printing, but the tin paste has fluidity and automatically overflows a printing area during back and forth printing, the tin paste overflowed from a printing area can be thickened along with the increase of time, and then workers are required to clean the part of thickened tin paste from the steel mesh, so that the tin paste is wasted, the cost is increased, manual operation is required, and the workload is increased.

Disclosure of Invention

In order to improve the utilization ratio of solder paste and improve the working efficiency, the application provides a scraper structure of a solder paste printer.

The technical aim of the application is achieved through the following technical scheme:

the utility model provides a scraper structure of tin cream printing machine, includes the movable block, and the upper surface of movable block is fixed with first cylinder and second cylinder, and the piston rod bottom surface of first cylinder and second cylinder is fixed with first mount and second mount respectively, and the bottom mounting of first mount and second mount has first blade and second blade, its characterized in that: the anti-overflow assembly is arranged at two ends of the first fixing frame and the second fixing frame respectively, the anti-overflow assembly comprises an anti-overflow plate, one end of the anti-overflow plate is fixed with two end surfaces of the first fixing frame and the second fixing frame, the other end of the anti-overflow plate extends between the first blade and the second blade, the anti-overflow plate is an inclined plate, and one ends, deviating from each other, of the anti-overflow plate incline towards a central position between the first blade and the second blade gradually.

Through adopting above-mentioned scheme, when the movable block carries out the printing that makes a round trip, two blades carry out the use in turn, and the spill-proof plate can carry out the guide to the solder paste that overflows in both sides when first blade scrapes to the spill-proof plate of slope can be with the solder paste to the position guide in centre, when the second blade scrapes next time, can scrape the solder paste that promotes to the centre, avoid promoting to glue after the both sides and thicken, need the staff to clear up, improved the utilization ratio of solder paste, and reduced artificial cost.

Optionally, the spill-proof device is provided with between a set of spill-proof plate for the homonymy, and the spill-proof device includes connecting plate and dead lever, and the top of dead lever is fixed with the bottom surface of movable block, and the bottom of dead lever is fixed with the upper surface of connecting plate, and the both ends of connecting plate are aligned with the spill-proof plate tip of both sides respectively.

Through adopting above-mentioned scheme, have certain distance between the spill-proof plate, still can appear by the phenomenon that the top overflows when the solder paste of guide is more, the spill-proof plate of connecting plate on one side carries out the butt joint when descending along with first knife rest when descending, can further prevent that the solder paste from overflowing.

Optionally, the upper surface at both ends of connecting plate is fixed with the riser, and the riser corresponds the spill plate and has seted up vertical groove, and the spill plate corresponds vertical groove and is fixed with the displacement piece, displacement piece and vertical groove inner wall sliding connection.

Through adopting above-mentioned scheme, the setting of riser and open perpendicular groove can dock when the spill plate docks with the connecting plate more neat, when the bottom surface of displacement piece and the upper surface butt of connecting plate, the ground of connecting plate and the bottom surface parallel and level of spill plate, the connection effect is better.

Optionally, a baffle is fixed to one end of the displacement block, which is away from the spill plate, and the width of the baffle is greater than that of the vertical groove.

Through adopting above-mentioned scheme, the baffle can prevent that the displacement piece from breaking away from perpendicular groove at gliding in-process, and the baffle is spacing to the displacement piece, strengthens the stability of displacement piece when sliding.

Optionally, the position that first knife rest and second knife rest both ends correspond the spill plate is provided with the extension board, and the one end and the first knife rest of extension board are fixed, and the other end extends towards the direction that deviates from first knife rest and second knife rest, and the sliding tray has been seted up to the lower surface of extension board, and the extending direction of sliding tray is unanimous with the extending direction of extension board, is provided with vertical pole in the sliding tray, and the top and the sliding tray inner wall sliding connection of vertical pole, the bottom and the spill plate of vertical pole are fixed.

Through adopting above-mentioned scheme, because the blade of different sizes needs to be changed according to the PCB board size of difference, the vertical pole can be according to the position of the PCB board of different sizes adjustment spill plate, makes the use of spill plate more nimble and convenient.

Optionally, a sliding block is fixed at the top end of the vertical rod, and the sliding block is in sliding connection with the inner wall of the sliding groove.

By adopting the scheme, the sliding block can reduce the friction force of the vertical rod during sliding, so that the sliding of the vertical rod is smoother.

Optionally, grooves are formed on two sides of the extension plate corresponding to the sliding grooves, protruding blocks are fixed at positions of the sliding blocks corresponding to the grooves, and the protruding blocks are in sliding connection with the inner walls of the grooves.

Through adopting above-mentioned scheme, can carry out spacingly to the sliding block in the lug card goes into the recess to fix a position, avoid breaking away from the sliding tray when the sliding block slides, influence the use.

Optionally, be provided with first threaded rod in the extension board, the one end of first threaded rod passes the centre of extension board and sliding block, and the other end is located the outer wall of extension board, first threaded rod and sliding block threaded connection, first threaded rod and extension board rotate to be connected.

Through adopting above-mentioned scheme, rotate first threaded rod and can make the sliding block slide in the sliding tray to carry out spacingly after accomplishing according to the size adjustment of PCB board, the stability of first threaded rod is better.

In summary, the present application has the following technical effects:

1. the anti-overflow plates are arranged at the two ends of the first knife rest and the second knife rest, and the anti-overflow plates are inclined, so that solder paste can be guided when the first knife blade and the second knife blade scrape and guided towards the middle position, the utilization rate of the solder paste can be improved, secondary cleaning by workers is avoided, and the efficiency is improved;

2. by arranging the connecting plates between the overflow prevention plates, solder paste can be further prevented from flowing out from the end parts of the overflow prevention plates, and the overflow prevention effect is better;

3. through setting up extension board and vertical pole can be according to the PCB board of equidimension not to the spill plate adjustment, make the result of use of spill plate better.

Drawings

Fig. 1 is a schematic overall view of a doctor blade structure of a solder paste printer according to the embodiment;

fig. 2 is a bottom view of a doctor blade structure of the solder paste printer according to the embodiment;

FIG. 3 is a schematic diagram of a solder paste printer with a doctor blade structure of the anti-overflow assembly according to the embodiment;

fig. 4 is a cross-sectional view of a doctor blade structure of a solder paste printer, specifically a sliding groove and a groove, according to the present embodiment.

In the figure, 1, a moving block; 11. a first cylinder; 12. a second cylinder; 13. a first fixing frame; 14. the second fixing frame; 15. a chute; 16. a positioning plate; 2. a first tool post; 21. a first blade; 3. a second tool post; 31. a second blade; 4. an anti-overflow assembly; 41. an extension plate; 411. a sliding groove; 412. a groove; 42. a vertical rod; 421. a sliding block; 422. a bump; 43. an anti-overflow plate; 44. a first threaded rod; 45. a baffle; 46. a displacement block; 5. an anti-overflow device; 51. a connecting plate; 52. a fixed rod; 521. a slide block; 53. a riser; 531. a vertical groove; 54. and a second threaded rod.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, the application provides a scraper structure of solder paste printer, including movable block 1, first knife rest 2, second knife rest 3, anti-overflow subassembly 4 and anti-overflow device 5, movable block 1 is located the top of printing plate, movable block 1 one end is connected with whole printer, first knife rest 2 and second knife rest 3 set up in the lower surface of movable block 1, scrape the solder paste and move, anti-overflow subassembly 4 sets up in the both ends of first knife rest 2 and second knife rest 3, anti-overflow device 5 sets up between two sets of anti-overflow subassembly 4 homonymies, can guide and promote the solder paste better, avoid solder paste excessive to the both sides of first knife rest 2 and second knife rest 3, avoid the solder paste of both sides to glue, do not need the manual work to carry out the secondary clearance, not only improve the utilization ratio of solder paste, and improve the efficiency of printing.

Referring to fig. 1, one end of a moving block 1 is connected to a printer and can slide in a horizontal direction, the PCB board is printed back and forth, the sliding of the moving block 1 is not described in detail in the prior art, the moving block 1 is in a step shape in this embodiment, a positioning plate 16 is disposed on an upper surface of the moving block 1, one half of the positioning plate 16 is fixed with the moving block 1 through a bolt, the other half of the positioning plate 16 extends to an upper side of a second upper surface, a first cylinder 11 and a second cylinder 12 are fixed on an upper surface of the positioning plate 16, the first cylinder 11 and the second cylinder 12 are arranged in parallel along a sliding direction of the moving block 1, a piston rod of the first cylinder 11 and a piston rod of the second cylinder 12 pass through a first fixing frame and a second fixing frame 14 are disposed at a bottom end of the positioning plate 16, a top plate of the first fixing frame 13 and a piston rod of the second fixing frame 14 are fixed with the first cylinder 11 and a piston rod of the second cylinder 12, a bottom plate of the first fixing frame 13 and the second fixing frame 14 is disposed on a lower surface of the moving block 1, and the first cylinder 13 and the second cylinder 14 are connected through a top plate and the first cylinder 12 are connected to the first cylinder 13 and the second cylinder 14 when the first cylinder and the second cylinder is started.

Referring to fig. 1, the bottom surfaces of the first and second holders 13 and 14 are provided with the first and second holders 2 and 3, the extension directions of the first and second holders 13 and 14 are identical to those of the first and second holders 2 and 3, and are fixed by bolts, the bottom ends of the first and second holders 2 and 3 are provided with the first and second blades 21 and 31, and the first and second blades 21 and 31 can be replaced according to the size of the PCB, and the replacement of the blades is not described herein in detail in the prior art.

Referring to fig. 3 and 4, the anti-overflow assembly 4 includes an extension plate 41, a vertical rod 42, an anti-overflow plate 43 and a first threaded rod 44, one end of the extension plate 41 is fixed with two ends of the first tool rest 2 and the second tool rest 3, the other end of the extension plate 41 extends towards the inner wall of the groove 412, the vertical plate is arranged on the bottom surface of the extension plate 41, the extending direction of the vertical plate is vertical to the extending direction of the extension plate 41, a sliding slot 411 is arranged on the bottom surface of the extension plate 41, the extending direction of the sliding slot 411 is consistent with the extending direction of the extension plate 41, the top end of the vertical rod 42 is fixed with a sliding block 421 corresponding to the sliding slot 411, the sliding block 421 is slidably connected with the inner wall of the sliding slot 411, grooves 412 are arranged on two sides of the extension plate 41 corresponding to the sliding slot 411, the sliding block 421 is fixed with a bump 422 corresponding to the position of the groove 412, the bump 422 slides in the sliding slot 412, the sliding block 421 can reduce the friction force of the vertical rod 42 during sliding, the bump 422 slides in the groove 412, the sliding can limit the vertical rod 42, the vertical rod 42 slides in the sliding, the sliding rod 42 falls off the sliding rod 42, the sliding rod 421 is arranged on the first end of the sliding rod, the sliding rod 421 falls off the sliding rod 421 and the sliding rod 421 is arranged on the first end of the sliding rod 421, the sliding rod 421 is arranged on the sliding rod, the first end of the sliding rod 421 and the sliding rod 421 is arranged on the first end of the sliding rod 41, the sliding rod 421 and the sliding rod 41, the sliding rod 421 is adjusted to be connected with the first end, the first end of the sliding rod 41, the sliding rod 41 can be screwed by the sliding rod and the first end, the sliding rod and the sliding rod 41 can be adjusted, the top rod and the first rod is made and the first rod and the sliding rod can be made have 422, and the sliding 422 can be made. The other end of the anti-overflow plate 43 extends towards the direction of the other blade, the anti-overflow plate 43 is an inclined plate, and one end of the anti-overflow plate, which is close to the vertical plate, gradually inclines towards the center position between the first blade 21 and the second blade 31, so that the influence on the utilization rate of the solder paste due to the fact that the solder paste is scraped to two sides when the first blade 21 and the second blade 31 scrape is avoided.

Referring to fig. 1 and 2, the anti-overflow device 5 includes a connection plate 51, a fixing rod 52 and a vertical plate 53, the connection plate 51 is disposed between the anti-overflow plates 43 on the same side of the first blade 21 and the second blade 31, the bottom end of the fixing rod 52 is fixed to the upper surface of the connection plate 51, the lower surface of the connection plate 51 is in contact with the upper surface of the printing table, the bottom surface of the fixing rod 52 is fixed to the upper surface of the connection plate 51, the top end of the fixing rod 52 extends to the lower surface of the moving block 1, a sliding groove 15 is provided at the position of the lower surface of the moving block 1 corresponding to the fixing rod 52, a sliding block 521 is fixed to the top end of the fixing rod 52, the sliding block 521 is slidably connected with the inner wall of the sliding groove 15, a second threaded rod 54 is disposed in the sliding block 521, one end of the second threaded rod 54 passes through the moving block 1 and the sliding block 521 to limit and move the connection plate 51, the riser 53 sets up in the both ends of connecting plate 51 and corresponds the tip of spill plate 43, the bottom surface of riser 53 and the upper surface fixed of connecting plate 51, vertical groove 531 has been seted up on the top vertical of riser 53, the surface fixed has displacement piece 46 on the one end of spill plate 43 corresponding to vertical groove 531, displacement piece 46 card is gone into in vertical groove 531 and with vertical groove 531 inner wall sliding connection, when the bottom surface of displacement piece 46 and the upper surface butt of connecting plate 51, the lower surface of spill plate 43 and the lower surface parallel and level of connecting plate 51, the one end that displacement piece 46 deviates from spill plate 43 is fixed with baffle 45, the width of baffle 45 is greater than the width of vertical groove 531, can avoid displacement piece 46 roll-off vertical groove when sliding, carry out the spacing to displacement piece 46.

When carrying out the solder paste printing to the PCB board, at first carry out the installation of size adaptation to first blade 21 and second blade 31 according to the size of PCB board, then movable block 1 is reciprocating and removes, when moving towards a direction, keep away from the blade of that direction and scrape, spill-proof plate 43 can descend along with the cylinder, align with connecting plate 51, can realize improving the utilization ratio of solder paste, improve work efficiency, avoid scraping to the both sides of first blade 21 and second blade 31, make the solder paste of both sides glue the thickening, avoid the staff to need clear up, reduce labour cost.

The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims

1. The utility model provides a scraper structure of tin cream printing machine, includes movable block (1), and the last fixed surface of movable block (1) has first cylinder (11) and second cylinder (12), and the piston rod bottom surface of first cylinder (11) and second cylinder (12) is fixed with first mount (13) and second mount (14) respectively, and the bottom mounting of first mount (13) and second mount (14) has first blade (21) and second blade (31), its characterized in that: the two ends of the first fixing frame (13) and the second fixing frame (14) are respectively provided with an anti-overflow component (4), the anti-overflow component (4) comprises an anti-overflow plate (43), one end of the anti-overflow plate (43) is fixed with the surfaces of the two ends of the first fixing frame (13) and the second fixing frame (14), the other end of the anti-overflow plate (43) extends between the first blade (21) and the second blade (31), the anti-overflow plate (43) is an inclined plate, and one ends, deviating from each other, of the anti-overflow plate (43) incline towards a central position between the first blade (21) and the second blade (31).

2. A doctor blade structure for a solder paste printer according to claim 1, wherein: the anti-overflow device (5) is arranged between a group of anti-overflow plates (43) on the same side, the anti-overflow device (5) comprises a connecting plate (51) and a fixing rod (52), the top end of the fixing rod (52) is fixed with the bottom surface of the moving block (1), the bottom end of the fixing rod (52) is fixed with the upper surface of the connecting plate (51), and the two ends of the connecting plate (51) are respectively aligned with the end parts of the anti-overflow plates (43) on the two sides.

3. A doctor blade structure for a solder paste printer according to claim 2, wherein: vertical plates (53) are fixed on the upper surfaces of the two ends of the connecting plate (51), vertical grooves (531) are formed in the vertical plates (53) corresponding to the spill plates (43), displacement blocks (46) are fixed on the spill plates (43) corresponding to the vertical grooves (531), and the displacement blocks (46) are slidably connected with the inner walls of the vertical grooves (531).

4. A doctor blade structure for a solder paste printer according to claim 3, wherein: one end of the displacement block (46) deviating from the spill plate (43) is fixedly provided with a baffle plate (45), and the width of the baffle plate (45) is larger than that of the vertical groove (531).

5. A doctor blade structure for a solder paste printer according to claim 1, wherein: the anti-overflow device is characterized in that the positions of the two ends of the first blade (21) and the second blade (31) corresponding to the anti-overflow plates (43) are provided with extension plates (41), one ends of the extension plates (41) are fixed with the first blade (21) and the second blade (31), the other ends of the extension plates extend towards the direction deviating from the first blade (21) and the second blade (31), sliding grooves (411) are formed in the lower surface of the extension plates (41), the extending direction of the sliding grooves (411) is consistent with the extending direction of the extension plates (41), vertical rods (42) are arranged in the sliding grooves (411), the top ends of the vertical rods (42) are connected with the inner walls of the sliding grooves (411) in a sliding mode, and the bottom ends of the vertical rods (42) are fixed with the anti-overflow plates (43).

6. The doctor blade structure of a solder paste printer according to claim 5, wherein: a sliding block (421) is fixed at the top end of the vertical rod (42), and the sliding block (421) is in sliding connection with the inner wall of the sliding groove (411).

7. The doctor blade structure of a solder paste printer according to claim 6, wherein: the extension plate (41) is provided with grooves (412) corresponding to the two sides of the sliding groove (411), the positions of the sliding blocks (421) corresponding to the grooves (412) are fixedly provided with protruding blocks (422), and the protruding blocks (422) are in sliding connection with the inner walls of the grooves (412).

8. The doctor blade structure of a solder paste printer according to claim 7, wherein: the extension board (41) is internally provided with a first threaded rod (44), one end of the first threaded rod (44) penetrates through the middle of the extension board (41) and the sliding block (421), the other end of the first threaded rod is located on the outer wall of the extension board (41), the first threaded rod (44) is in threaded connection with the sliding block (421), and the first threaded rod (44) is in rotary connection with the extension board (41).