Solder paste filling machine capable of preventing dripping and adhesion

Abstract

The invention discloses a solder paste filling machine capable of preventing dripping adhesion, and relates to the technical field of solder paste filling. The solder paste is prevented from dripping; the device specifically comprises a base and a conveying part for conveying filling bottles, a supporting frame is fixed to the outer wall of the top of the base, a storage part is fixed to the top of the supporting frame, a filling pipe fitting is movably connected to the bottom of the storage part, a transverse plate is fixed to the outer wall of the filling pipe fitting, and a through hole formed in the surface of the transverse plate is movably connected with a rotating shaft; a mounting plate is fixed to the circumferential outer wall of the rotating shaft, a cover plate is welded to one end of the mounting plate, and a notch is formed in the top of the cover plate. By arranging the limiting plates, the moving path of the roller can be guided, after filling is completed, the limiting plates are used for limiting the roller, the two cover plates cover the bottom of the filling pipe after being folded, when a small amount of solder paste left in the filling pipe drips, the solder paste is adsorbed through adsorption cotton on the inner walls of the bottoms of the cover plates, and therefore the solder paste is prevented from falling off. Solder paste is prevented from dripping, and meanwhile, a dustproof effect on the filling pipe is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of solder paste filling, and in particular to a solder paste filling machine capable of preventing dripping and adhesion. Background Art

[0002] In the prior art, solder paste is a material used for welding, also known as solder paste. It has a certain viscosity at room temperature, so it is often used to weld printed circuit board pads, and can stick electronic components to specific positions, and firmly fix them to the printed circuit board pads. The solder paste needs to be filled after production, and is filled into a filling bottle by a filling machine. However, the existing filling machine is prone to dripping of solder paste during filling, that is, a small amount of solder paste in the filling pipeline will drip, which is inconvenient to clean;

[0003] After searching, the Chinese patent application number 202323670599.3 discloses a solder paste filling machine, including an operating table and a fixed bracket arranged on the operating table, a filling body is arranged on the fixed bracket, a groove is arranged on the operating table below the filling body, a movable plate is matched in the groove, a clamping assembly for clamping the filling bottle is arranged on the movable plate, and a telescopic cylinder is arranged at the lower end of the operating table, and the telescopic cylinder drives the movable plate to leave or move into the groove to drive the filling bottle on the movable plate to approach or move away from the filling body.

[0004] A solder paste filling machine in the above patent has the following disadvantages: after the solder paste is filled, part of the solder paste in the filling main pipeline is prone to dripping under the action of its own gravity, and the dripped solder paste is not easy to clean after drying, which causes certain inconveniences. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a solder paste filling machine that prevents dripping and adhesion.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A solder paste filling machine for preventing dripping and sticking comprises a conveying part for conveying filling bottles by a base, a support frame is fixed to the outer wall of the top of the base, and a storage part is fixed to the top of the support frame, and a filling pipe fitting is movably connected to the bottom of the storage part, a cross plate is fixed to the outer wall of the filling pipe fitting, and a through hole opened in the surface of the cross plate is movably connected to a rotating shaft, and a mounting plate is fixed to the circumferential outer wall of the rotating shaft, and a cover plate is welded to one end of the mounting plate, a notch is opened in the top of the cover plate, adsorption cotton is bonded to the inner wall of the bottom of the cover plate, and a torsion spring is clamped between the circumferential outer wall of the rotating shaft and the outer wall of one side of the cross plate, a bracket is welded to the outer wall of one side of the mounting plate, and a roller is movably connected to the inner wall of the bracket, and a limit plate used in conjunction with the roller is fixed to the inner wall of the top of the support frame.

[0008] Preferably, the storage portion comprises a storage box and a connecting pipe, the storage box is fixed to the top outer wall of the support frame, and a filling pipe is fixed to the top of the storage box.

[0009] Preferably, the connecting pipe is welded to the outer wall of the bottom of the storage box, and a leakage hole is opened at the bottom of the connecting pipe.

[0010] Preferably, the filling tube comprises a rotating seat and a lead-out hole, the rotating seat is rotary-sealed and connected to the bottom outer wall of the connecting tube, and the lead-out hole is provided on the surface of the rotating seat, and a coil spring is clamped between the top of the rotating seat and the circumferential outer wall of the connecting tube.

[0011] Preferably: a negative pressure bag is bonded to the bottom of the rotating seat, and a bottom plate is bonded to the bottom of the negative pressure bag, an electric cylinder is fixed to the bottom outer wall of the bottom plate, and a telescopic rod sliding at the output end of the electric cylinder is fixed to the bottom outer wall of the rotating seat by a pin.

[0012] Preferably, the bottom of the base plate is threadedly connected to a flow control valve, and the bottom of the flow control valve is threadedly connected to a filling pipe.

[0013] Preferably, the conveying part comprises side plates and driving rollers, the two side plates are fixed to the outer wall of the top of the base, and the driving roller is movably connected between the two side plates, and the outer walls of the two driving rollers are transmission-connected with a conveyor belt.

[0014] On the basis of the above-mentioned solution: a servo motor is fixed to an outer wall of one side of one of the side plates, and an output end of the servo motor is connected to one end of a driving roller through a coupling.

[0015] Based on the above solution, it is preferred that: a connecting column is fixed to the outer wall of one side of the horizontal plate, and a toggle block is welded to the bottom of the connecting column.

[0016] Based on the above solution, it is further preferred that: the outer wall of the conveyor belt is equidistantly fixed with shifting rods used in conjunction with the shifting blocks.

[0017] The beneficial effects of the present invention are:

[0018] 1. The moving path of the roller can be guided by setting a limit plate, so that after filling is completed, the roller is limited by the limit plate, and the two cover plates cover the bottom of the filling tube after closing. When a small amount of solder paste remains inside the filling tube drips, the adsorption cotton on the inner wall of the bottom of the cover plate is used to adsorb the solder paste to prevent the solder paste from dripping, and at the same time, it plays a dust-proof role for the filling tube.

[0019] 2. A negative pressure bag is provided to absorb the solder paste by using negative pressure during the process of compression and expansion, thereby preventing the solder paste from being unable to be quickly discharged from the filling tube due to its high viscosity, affecting the filling efficiency.

[0020] 3. The toggle block can be toggled by providing a toggle rod, so that when a certain amount of solder paste is stored inside the negative pressure bag, the leakage hole and the outlet hole are offset from each other to prevent backflow during the solder paste being squeezed out. At the same time, the roller and the limit plate are laterally offset during the rotation of the rotating seat relative to the electric cylinder to ensure that the two cover plates are always in an open state when the solder paste is filled.

[0021] 4. The resilient force of the coil spring is used to vibrate the filling tube, so that the residual solder paste inside it can be quickly discharged, further avoiding the accumulation of solder paste inside the filling tube, which would cause the solder paste to block the filling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a solder paste filling machine for preventing dripping and sticking proposed by the present invention;

[0023] Figure 2 A schematic diagram of the top view of a solder paste filling machine for preventing dripping and sticking proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the overall structure of a filling part of a solder paste filling machine for preventing dripping and sticking proposed by the present invention;

[0025] Figure 4 A schematic diagram of the partial structure of a filling part of a solder paste filling machine for preventing dripping and sticking proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of the overall structure of a storage part of a solder paste filling machine for preventing dripping and sticking proposed by the present invention;

[0027] Figure 6 A schematic diagram of the explosion structure of the storage part of a solder paste filling machine for preventing dripping and sticking proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the partial structure of the storage part of a solder paste filling machine for preventing dripping and sticking proposed by the present invention.

[0029] In the figure: base 1, side plate 2, support frame 3, storage box 4, filling bottle 5, lever 6, servo motor 7, drive roller 8, conveyor belt 9, negative pressure bag 10, limit plate 11, cover plate 12, mounting plate 13, cross plate 14, connecting pipe 15, flow control valve 16, filling pipe 17, roller 18, notch 19, torsion spring 20, rotating shaft 21, bracket 22, coil spring 23, rotating seat 24, electric cylinder 25, bottom plate 26, telescopic rod 27, leak hole 28, lead-out hole 29, filling pipe 30, toggle block 31, connecting column 32. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] A solder paste filling machine that prevents dripping and sticking, such as Figures 1 to 7 As shown, it includes a conveying part for conveying the filling bottles 5 by a base 1, a support frame 3 is fixed to the top outer wall of the base 1 by bolts, and a storage part is fixed to the top of the support frame 3, and a filling pipe fitting is rotatably connected to the bottom of the storage part, a transverse plate 14 is fixed to the outer wall of the filling pipe fitting, and a through hole opened on the surface of the transverse plate 14 is rotatably connected to a rotating shaft 21, and a mounting plate 13 is fixed to the circumferential outer wall of the rotating shaft 21 by screws, and a cover plate 12 is welded to one end of the mounting plate 13, a notch 19 is opened at the top of the cover plate 12, adsorption cotton is bonded to the inner wall of the bottom of the cover plate 12, and a torsion spring 20 is clamped between the circumferential outer wall of the rotating shaft 21 and the outer wall of one side of the transverse plate 14, a bracket 22 is welded to the outer wall of one side of the mounting plate 13, and a roller 18 is rotatably connected to the inner wall of the bracket 22, and a limit plate 11 used in conjunction with the roller 18 is fixed to the inner wall of the top of the support frame 3 by screws;

[0033] By providing a conveying part, a plurality of filling bottles 5 that need to be filled are conveyed. When the filling bottle 5 is conveyed to a position directly opposite to the filling pipe fitting, the storage part can be used to fill the solder paste into the filling bottle 5 through the filling pipe fitting. During filling, the height of the filling pipe fitting is adjusted. When the filling pipe fitting moves downward, the roller 18 is synchronously driven to move downward. The moving path of the roller 18 is guided by the limit plate 11. In this embodiment, the two limit plates 11 form a "Y"-shaped structure. When the roller 18 moves to the bottom of the limit plate 11, the limit plate 11 gradually opens so that the roller 18 is no longer limited in the horizontal direction, so that the cover plate 12 is unfolded under the torsion of the torsion spring 20, and the bottom of the filling pipe fitting leaks out from between the two cover plates 12, so that the filling pipe fitting fills the filling bottle 5 with solder paste.

[0034] After the filling is completed, the filling tube uses the limit plate 11 to re-guide the roller 18 during the upward movement, so that the two cover plates 12 gradually close to cover the bottom of the filling tube. When the remaining solder paste in the filling tube falls under its own gravity, the adsorption cotton on the bottom inner wall of the cover plate 12 is used to adsorb the remaining solder paste to prevent the solder paste from dripping. At the same time, the cover plate 12 can seal the bottom of the filling tube to prevent dust from entering the filling tube and contaminating the solder paste.

[0035] The storage part includes a storage box 4 and a connecting pipe 15. The storage box 4 is fixed to the top outer wall of the support frame 3 by bolts. A filling pipe 30 is fixed to the top of the storage box 4, and the connecting pipe 15 is welded to the bottom outer wall of the storage box 4. A leakage hole 28 is opened at the bottom of the connecting pipe 15.

[0036] The solder paste can be stored by providing a storage box 4 , and a filling pipe 30 is provided on the top of the storage box 4 so that the solder paste can be replenished after filling, and the solder paste can be discharged by using the leakage hole 28 .

[0037] The filling pipe fitting includes a rotating seat 24 and a lead-out hole 29, the aperture of the lead-out hole 29 is slightly larger than the leak hole 28, the rotating seat 24 is rotationally sealed and connected to the outer wall of the bottom of the connecting tube 15, and the lead-out hole 29 is opened on the surface of the rotating seat 24, a coil spring 23 is clamped between the top of the rotating seat 24 and the circumferential outer wall of the connecting tube 15, a negative pressure bag 10 is bonded to the bottom of the rotating seat 24, and a bottom plate 26 is bonded to the bottom of the negative pressure bag 10, an electric cylinder 25 is fixed to the outer wall of the bottom of the bottom plate 26 by screws, and a telescopic rod 27 sliding at the output end of the electric cylinder 25 is fixed to the outer wall of the bottom of the rotating seat 24 by a pin, a flow control valve 16 is threadedly connected to the bottom of the bottom of the bottom plate 26, and a filling pipe 17 is threadedly connected to the bottom of the flow control valve 16;

[0038] In the initial stage, the outlet hole 29 and the leakage hole 28 are aligned with each other, so that the solder paste in the storage part enters the negative pressure bag 10 through the leakage hole 28 and the outlet hole 29. When the flow control valve 16 is opened, the solder paste is filled into the filling bottle 5 through the filling tube 17. The electric cylinder 25 is used to adjust the spacing between the rotating seat 24 and the bottom plate 26, so as to control the lifting and lowering of the filling tube 17. When the spacing between the rotating seat 24 and the bottom plate 26 is reduced, the negative pressure bag 10 is in a state of being gradually compressed during this process. When the negative pressure bag 10 is compressed to the limit state and then reset, the negative pressure bag 10 uses negative pressure to absorb the solder paste in the storage part. Since the solder paste has a certain viscosity, the negative pressure is used to absorb the solder paste, thereby accelerating the movement rate of the solder paste.

[0039] After a certain amount of solder paste is absorbed into the negative pressure bag 10, when the negative pressure bag 10 is compressed again, the rotating seat 24 is driven to rotate along the connecting tube 15, so that the leakage hole 28 and the outlet hole 29 are misaligned with each other. When the negative pressure bag 10 is compressed, the solder paste in the negative pressure bag 10 is prevented from flowing back. During the compression of the negative pressure bag 10, the solder paste stored therein is squeezed out through the flow control valve 16 and the filling tube 17, thereby filling the filling bottle 5.

[0040] The conveying part includes a side plate 2 and a driving roller 8, the two side plates 2 are fixed to the top outer wall of the base 1 by bolts, and the driving roller 8 is rotatably connected between the two side plates 2, and the outer walls of the two driving rollers 8 are transmission-connected with a conveyor belt 9, and a servo motor 7 is fixed to the outer wall of one side of one side plate 2 by bolts, and the output end of the servo motor 7 is connected to one end of the driving roller 8 through a coupling;

[0041] When the servo motor 7 drives the driving roller 8 to rotate, the conveyor belt 9 is driven by the driving roller 8. When the filling bottle 5 is placed on the top of the conveyor belt 9, the conveyor belt 9 transports the filling bottle 5 during the transmission process. When the filling bottle 5 is transported to the bottom of the filling tube 17, filling is carried out.

[0042] A connecting column 32 is fixed to the outer wall of one side of the horizontal plate 14 by screws, and a toggle block 31 is welded to the bottom of the connecting column 32. A toggle rod 6 used in conjunction with the toggle block 31 is fixed to the outer wall of the conveyor belt 9 at equal distances.

[0043] After a certain amount of solder paste is absorbed by the negative pressure in the negative pressure bag 10, the conveyor belt 9 drives the lever 6 to move during the transmission process. When the lever 6 moves to the toggle block 31, it pushes the toggle block 31. After the toggle block 31 is subjected to external force, it drives the rotating seat 24 to rotate along the bottom of the connecting pipe 15, so that the leakage hole 28 and the outlet hole 29 are misaligned with each other, and in this process, the roller 18 is also deviated from the limit plate 11 in the horizontal direction. At this time, when the negative pressure bag 10 is compressed by the electric cylinder 25, the compressed negative pressure bag 10 squeezes out the solder paste stored therein through the flow control valve 16 and the filling pipe 17 to fill the filling bottle 5;

[0044] When the solder paste is filled, the conveyor belt 9 continues to drive the lever 6 to move. When the lever 6 is completely detached from the toggle block 31, the resilience of the coil spring 23 is used to reset the rotating seat 24. The rotating seat 24 will vibrate during the resetting process, so that a small amount of solder paste in the filling tube 17 is vibrated and discharged, thereby preventing the solder paste from accumulating in the filling tube 17. The diameter of the filling tube 17 is smaller than the diameter of the filling bottle 5, thereby preventing the solder paste from dripping to the outside of the filling bottle 5 during filling.

[0045] When the present embodiment is in use, the filling bottle 5 is firstly grabbed by the manipulator and then placed on the conveyor belt 9, and the filling bottle 5 is transported by the conveyor belt 9. At the same time, the negative pressure bag 10 is compressed and then stretched by the electric cylinder 25, so that the solder paste in the storage box 4 is sucked into the negative pressure bag 10 under the action of negative pressure. When the lever 6 on the conveyor belt 9 moves to the toggle block 31, the toggle block 31 is squeezed, so that the toggle block 31 drives the rotating seat 24 to rotate along the bottom of the connecting pipe 15. When the outlet hole 29 and the leakage hole 28 are misaligned with each other, the negative pressure bag 10 is compressed again by the electric cylinder 25 and the flow control valve 16 is opened. After the solder paste in the negative pressure bag 10 is squeezed, it is filled into the filling bottle 5 through the flow control valve 16 and the filling pipe 17. After the filling is completed, the conveyor belt 9 continues to drive the filling bottle 5 and the lever 6 to move. When the lever 6 is separated from the toggle block 31, the rotating seat 24 is reset under the action of the rebound force of the coil spring 23.

[0046] When the equipment stops, the conveyor belt 9 moves the lever 6 to a position misaligned with the lever block 31, and then the conveyor belt 9 stops running. The electric cylinder 25 drives the telescopic rod 27 to extend first, so that the roller 18 moves downward to the wide part of the limit plate 11, and then resets to between the limit plates 11 under the action of the coil spring 23. Then the electric cylinder 25 drives the telescopic rod 27 to shorten, so that the roller 18 moves up between the limit plates 11. When the roller 18 moves up to the narrow part of the limit plate 11, the cover plate 12 is closed.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A solder paste filling machine for preventing dripping and sticking, comprising a base (1) for conveying a filling bottle (5), characterized in that: A support frame (3) is fixed to the top outer wall of the base (1), and a storage part is fixed to the top of the support frame (3), and a filling pipe is movably connected to the bottom of the storage part, a transverse plate (14) is fixed to the outer wall of the filling pipe, and a through hole provided on the surface of the transverse plate (14) is movably connected to a rotating shaft (21), and a mounting plate (13) is fixed to the circumferential outer wall of the rotating shaft (21), and a cover plate (12) is welded to one end of the mounting plate (13), a notch (19) is provided on the top of the cover plate (12), adsorption cotton is bonded to the bottom inner wall of the cover plate (12), and a torsion spring (20) is clamped between the circumferential outer wall of the rotating shaft (21) and the outer wall of one side of the transverse plate (14), a bracket (22) is welded to the outer wall of one side of the mounting plate (13), and a roller (18) is movably connected to the inner wall of the bracket (22), and a limit plate (11) used in conjunction with the roller (18) is fixed to the top inner wall of the support frame (3).

2. The solder paste filling machine for preventing dripping and adhesion according to claim 1, characterized in that: The storage part comprises a storage box (4) and a connecting pipe (15); the storage box (4) is fixed to the top outer wall of the support frame (3); and a filling pipe (30) is fixed to the top of the storage box (4).

3. The solder paste filling machine for preventing dripping and adhesion according to claim 2, characterized in that: The connecting pipe (15) is welded to the outer wall of the bottom of the storage box (4), and a leakage hole (28) is opened at the bottom of the connecting pipe (15).

4. The solder paste filling machine for preventing dripping and adhesion according to claim 3 is characterized in that: The filling pipe fitting comprises a rotating seat (24) and a lead-out hole (29); the rotating seat (24) is rotationally sealed and connected to the bottom outer wall of the connecting pipe (15); the lead-out hole (29) is opened on the surface of the rotating seat (24); and a coil spring (23) is clamped between the top of the rotating seat (24) and the circumferential outer wall of the connecting pipe (15).

5. The solder paste filling machine for preventing dripping and sticking according to claim 4, characterized in that: A negative pressure bag (10) is bonded to the bottom of the rotating seat (24), and a bottom plate (26) is bonded to the bottom of the negative pressure bag (10). An electric cylinder (25) is fixed to the outer wall of the bottom of the bottom plate (26), and a telescopic rod (27) sliding at the output end of the electric cylinder (25) is fixed to the outer wall of the bottom of the rotating seat (24) through a pin.

6. The solder paste filling machine for preventing dripping and sticking according to claim 5, characterized in that: The bottom of the bottom plate (26) is threadedly connected to a flow control valve (16), and the bottom of the flow control valve (16) is threadedly connected to a filling pipe (17).

7. The solder paste filling machine for preventing dripping and sticking according to claim 6, characterized in that: The conveying part comprises side plates (2) and driving rollers (8), the two side plates (2) are fixed to the top outer wall of the base (1), the driving rollers (8) are movably connected between the two side plates (2), and the outer walls of the two driving rollers (8) are transmission-connected with a conveyor belt (9).

8. The solder paste filling machine for preventing dripping and sticking according to claim 7, characterized in that: A servo motor (7) is fixed to an outer wall of one side of one of the side plates (2), and an output end of the servo motor (7) is connected to one end of a driving roller (8) via a coupling.

9. The solder paste filling machine for preventing dripping and sticking according to claim 8, characterized in that: A connecting column (32) is fixed to the outer wall of one side of the transverse plate (14), and a toggle block (31) is welded to the bottom of the connecting column (32).

10. The solder paste filling machine for preventing dripping and sticking according to claim 9, characterized in that: The outer wall of the conveyor belt (9) is equidistantly fixed with shifting rods (6) for use with the shifting blocks (31).

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