CN214921250U

CN214921250U - Scaling powder dosing device

Info

Publication number: CN214921250U
Application number: CN202121810338.5U
Authority: CN
Inventors: 董勤正; 王伟; 陈军
Original assignee: Zhejiang Huixi New Material Co ltd
Current assignee: Zhejiang Huixi New Material Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2021-11-30
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses a scaling powder dosing device, be equipped with the barrel of nozzle including the lower extreme, be equipped with the feeding mouth on the nozzle, be equipped with miniature quantitative plunger pump in the barrel, lithium cell module and control circuit board, the feeding mouth is connected with the bleeder valve of miniature quantitative plunger pump, the suction valve of miniature quantitative plunger pump is connected with the suction pipe mouth, the suction pipe mouth is drawn forth from the opening of opening establishing in barrel one side, be connected with the workbin of saving liquid rosin scaling powder through the hose, be equipped with the constant temperature heating module in the nozzle, the bleeder valve of miniature quantitative plunger pump is connected with the heat conduction feed pipe, the heat conduction feed pipe is worn out through the constant temperature heating module, and be connected with the feeding mouth. The utility model discloses can be with the coating of liquid rosin scaling powder ration at the welding parts of components and parts, the accuracy of scaling powder when the coating has been guaranteed to the feed mouth of needle tubing formula, can be used to the welding of accurate components and parts, and constant temperature heating module can guarantee that liquid rosin scaling powder keeps active state when the discharge, has improved the coating quality of scaling powder.

Description

Scaling powder dosing device

Technical Field

The utility model relates to a scaling powder coating technology field, concretely relates to can treat soldering position and carry out scaling powder dosing feeding device of quantitative coating.

Background

The soldering flux is an indispensable auxiliary material in the SMT welding process, and in wave soldering, the soldering flux and soldering tin are separately used, while in reflow soldering, the soldering flux is used as an important component of soldering paste. The quality of the welding effect is not only related to the welding process, the quality of components and PCBs, but also related to the selection of the soldering flux.

The flux is a mixture of rosin as a main component, and is an auxiliary material for ensuring the smooth operation of a welding process. The soldering is the main technological process in electronic assembly, the soldering flux is the auxiliary material used in soldering, and the main function of the soldering flux is to remove the oxides on the surfaces of the solder and the soldered parent metal, so that the necessary cleanness of the metal surface is achieved. It can prevent surface from being oxidized again, reduce surface tension of welding material and raise welding performance.

The rosin is inactive in the solid state and active only in the liquid state, and the activity can last to 315 ℃ when the melting point is 127 ℃. The optimum soldering temperature is 240-250 ℃, so the soldering temperature is in the active temperature range of rosin, and the welding residues of the soldering temperature do not have corrosion problems, and the rosin is a non-corrosive flux due to the characteristics, so the soldering temperature is widely applied to the welding of electronic equipment. Rosin flux has 3 forms, liquid, paste and solid, for different applications. Solid fluxes are suitable for soldering iron, and liquid and paste fluxes are suitable for wave soldering, respectively. In some accurate components and parts welding process, need carry out quantitative welding machine coating to the welding position, in view of this, the utility model provides a can treat that the welding position carries out scaling powder dosing device of quantitative coating.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects existing in the prior art, the utility model provides a scaling powder dosing device which can treat the welding position to carry out quantitative coating.

The utility model discloses realize that the technical scheme that above-mentioned technological effect adopted is:

the utility model provides a scaling powder dosing device, includes the barrel, the lower extreme shaping of barrel has the nozzle of throat form, be connected with needle tube formula's feed mouth on the nozzle, be equipped with miniature quantitative plunger pump, lithium cell module and control circuit board in the barrel, the feed mouth with the discharge valve of miniature quantitative plunger pump is connected, the suction valve of miniature quantitative plunger pump is connected with the suction pipe mouth, the suction pipe mouth is established from opening the opening of barrel one side is drawn forth, is connected with the workbin of saving liquid rosin scaling powder through the hose, be equipped with constant temperature heating module in the nozzle, the discharge valve of miniature quantitative plunger pump is connected with the heat conduction feed pipe, the heat conduction feed pipe warp the constant temperature heating module is worn out, and with the feed mouth is connected.

Preferably, in foretell scaling powder dosing device, the mouth of pipe of inhaling is established the lateral wall of miniature quantitative plunger pump, heat conduction feed pipe connects the lower extreme of miniature quantitative plunger pump, pump body week side of miniature quantitative plunger pump is equipped with the locking bayonet socket that two at least symmetries set up, the barrel inner wall be equipped with the draw-in groove of locking bayonet socket adaptation.

Preferably, in the soldering flux quantitative feeding device, a heat insulation cushion block is arranged at the top of the miniature quantitative plunger pump, a conductive connecting plate is arranged on the upper surface of the heat insulation cushion block, the conductive connecting plate is electrically connected with the plunger driving assembly of the miniature quantitative plunger pump through an electric connecting wire leading into the heat insulation cushion block, and the lithium battery module and the control circuit board are respectively electrically connected with the conductive connecting plate.

Preferably, in the above soldering flux quantitative feeding device, the lithium battery module and the control circuit board are arranged in the upper end cavity of the barrel, and the lithium battery module and the control circuit board are electrically connected with the conductive connecting plate through an elastic terminal connecting seat.

Preferably, in the above soldering flux quantitative feeding device, a touch sensing switch electrically connected to the control circuit board is disposed on an outer wall of the cylinder.

Preferably, in the above soldering flux quantitative feeding device, an end cover is disposed at the top of the cylinder, and a charging port electrically connected to the lithium battery module is disposed on the end cover.

Preferably, in the flux dosing device described above, the cartridge body comprises an outer metal cartridge shell and an inner thermally insulating liner.

Preferably, in the above flux dosing device, the micro dosing plunger pump is an axial micro plunger pump made of zirconia ceramic.

The utility model has the advantages that: the utility model discloses a scaling powder dosing device can guarantee the accuracy of scaling powder when the coating with the welding position of liquid rosin scaling powder ration coating at components and parts, needle tubular's feed mouth, can be used to the welding of accurate components and parts, and constant temperature heating module can guarantee that liquid rosin scaling powder keeps the active state when the discharge, has improved the coating quality of scaling powder.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an internal structural view of the present invention;

fig. 3 is a structural diagram of the miniature quantitative plunger pump of the present invention.

Detailed Description

For a further understanding of the invention, reference is made to the following description taken in conjunction with the accompanying drawings and specific examples, in which:

in the description of the present application, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

Referring to fig. 1 and 2, as shown in the drawings, an embodiment of the present invention provides a scaling powder quantitative feeding device, which includes a barrel 1, a necking nozzle 2 formed at a lower end of the barrel 1, and a needle tube type feeding nozzle 3 connected to the nozzle 2. Specifically, as shown in fig. 2, a micro quantitative plunger pump 4, a lithium battery module 5 and a control circuit board are arranged in the cylinder 1. The feeding nozzle 3 is connected with a discharge valve of the micro quantitative plunger pump 4, and is used for receiving the liquid rosin soldering flux quantitatively discharged from the micro quantitative plunger pump 4, and then coating the liquid rosin soldering flux quantitatively discharged on a part to be welded of a component through the needle tube type feeding nozzle 3. As shown in fig. 1 and 2, the inlet valve of the micro quantitative plunger pump 4 is connected to an inlet nozzle 41, and the inlet nozzle 41 is led out from an opening provided on one side of the cylinder 1. The outlet suction pipe mouth 41 is connected with a feed box for storing liquid rosin soldering flux through a hose, and provides quantitative liquid rosin soldering flux for the pump chamber of the miniature quantitative plunger pump 4. Specifically, as shown in fig. 2, in order to improve the activity of the liquid rosin flux, a constant temperature heating module 6 is arranged in the barrel mouth 2, and a heat conduction feeding pipe 42 is connected to a discharge valve of the micro quantitative plunger pump 4, and the heat conduction feeding pipe 42 penetrates through the constant temperature heating module 6 and is connected with the feeding nozzle 3. The constant-temperature heating module 6 comprises an electric heating module body matched with the necking barrel mouth 2 and a temperature sensor, and the control circuit board is matched with the temperature sensor and used for dynamically adjusting the output power of the electric heating module body to keep the temperature of the electric heating module body in a dynamic constant state. In the preferred embodiment of the present invention, the dynamic constant temperature of the constant temperature heating module 6 is maintained at 127-130 ℃.

Further, in the preferred embodiment of the present invention, as shown in fig. 2, the suction nozzle 41 is provided at a side wall of the micro metering plunger pump 4, and the heat conductive feeding pipe 42 is connected to a lower end of the micro metering plunger pump 4. In order to avoid the looseness of the miniature quantitative plunger pump 4, as shown in fig. 2, at least two symmetrically arranged anti-loosening bayonets 43 are arranged on the periphery of the pump body of the miniature quantitative plunger pump 4, and a clamping groove matched with the anti-loosening bayonets 43 is arranged on the inner wall of the barrel 1. The miniature quantitative plunger pump 4 can be kept in a stable fixed state in the barrel 1 through the assembly connection of the anti-loosening bayonet 43 and the clamping groove.

Further, in the preferred embodiment of the present invention, as shown in fig. 2, the top of the micro quantitative plunger pump 4 is provided with a heat insulation block 8, and the upper surface of the heat insulation block 8 is provided with a conductive connecting plate 44. To further reduce heat conduction, the electrically conductive connection plate 44 is electrically connected to the plunger drive assembly of the micro-metering plunger pump 4 via electrical connection wires leading into the insulating spacer 8. Lithium battery module 5 and control circuit board are connected with electrically conductive connecting plate 44 electricity respectively, through the isolation of thermal-insulated cushion 8, can reduce the heat to lithium battery module 5 and the control circuit board transmission of barrel 1 upper end by furthest, have guaranteed circuit safety.

Further, in the preferred embodiment of the present invention, as shown in fig. 2, the lithium battery module 5 and the control circuit board are disposed in the upper end chamber of the barrel 1, and the lithium battery module 5 and the control circuit board are electrically connected to the conductive connection plate 44 through the elastic terminal connection seat 9. The elastic terminal connecting seat 9 is used for establishing the electric connection between the lithium battery module 5 and the control circuit board and the micro quantitative plunger pump 4 respectively. In order to improve the maintainability of the device, the lower end of the elastic terminal connecting seat 9 is electrically connected to the conductive connecting plate 44 in a contact manner, and the lower end of the elastic terminal connecting seat and the conductive connecting plate are in a separable state, and the lithium battery module 5 and the control circuit board are electrically connected to the upper end of the elastic terminal connecting seat 9 in a contact manner, and the upper end of the elastic terminal connecting seat and the control circuit board are in a separable state.

Further, in the preferred embodiment of the present invention, for convenient use, a touch sensing switch electrically connected to the control circuit board is disposed on the outer wall of the barrel 1, and the flux quantitative feeding device can be conveniently controlled by the touch sensing switch. As shown in fig. 2, an openable end cap 7 is disposed at the top of the barrel 1, and a charging port electrically connected to the lithium battery module 5 is disposed on the end cap 7, through which the lithium battery module 5 can be charged. In order to avoid the heat in the cylinder 1 from being conducted outwards, as shown in fig. 2, the cylinder 1 comprises an outer metal cylinder shell 11 and an inner heat insulation lining 12, wherein the heat insulation lining 12 is made of heat insulation ceramic. In order to improve the service life and the precision of the miniature quantitative plunger pump 4, the miniature quantitative plunger pump 4 adopts an axial miniature plunger pump made of zirconia ceramic materials.

When the miniature quantitative plunger pump is used, the plunger of the miniature quantitative plunger pump 4 is pulled outwards, the pressure in the pump chamber is reduced, the discharge valve is closed, when the pressure is lower than the suction pressure, the suction valve is opened, and the liquid rosin soldering flux enters the opened suction valve through the suction pipe opening and then enters the pump chamber. When the plunger is pushed inwards, the pressure of the pump chamber rises, the suction valve is closed, when the pressure is higher than the suction pressure, the discharge valve is opened, the liquid rosin soldering flux is discharged into the heat-conducting feeding pipe 42 through the opened discharge valve, and then is coated on the part to be welded of the precision component through the needle pipe type feeding nozzle 3 connected with the heat-conducting feeding pipe 42, so that the quantitative coating of the part to be welded is realized.

In the preferred embodiment of the present invention, the miniature quantitative plunger pump 4 is a miniature plunger pump of EdetPUMP, which has a weight of 230g, a small size and a light weight. In order to realize more stable performance and prevent the corrosion and reaction of the medicine, the miniature quantitative plunger pump adopts the plunger pump made of zirconia ceramics, the internal structural components of the miniature quantitative plunger pump are all made of zirconia ceramics, the cavity of the inner wall is smooth, and the medicine residue can be avoided. Meanwhile, the online washing and sterilizing device has extremely small thermal expansion, smaller plunger clearance, no liquid, continuous operation and higher filling precision, and can realize online washing and sterilization.

To sum up, the utility model discloses a scaling powder dosing device can guarantee the accuracy of scaling powder when the coating with the welding position of liquid rosin scaling powder ration coating at components and parts, needle tubular's feed mouth, can be used to the welding of accurate components and parts, and constant temperature heating module can guarantee that liquid rosin scaling powder keeps active state when discharging, has improved the coating quality of scaling powder.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the foregoing embodiments and the description with reference to the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications fall within the scope of the invention as claimed, which is defined by the claims appended hereto and their equivalents.

Claims

1. The scaling powder quantitative feeding device is characterized by comprising a barrel body (1), a necking-shaped barrel opening (2) is formed at the lower end of the barrel body (1), a needle tube type feeding nozzle (3) is connected to the barrel opening (2), a miniature quantitative plunger pump (4), a lithium battery module (5) and a control circuit board are arranged in the barrel body (1), the feeding nozzle (3) is connected with a discharge valve of the miniature quantitative plunger pump (4), a suction valve of the miniature quantitative plunger pump (4) is connected with a suction pipe orifice (41), the suction pipe orifice (41) is automatically opened at an opening on one side of the barrel body (1) and is led out and connected with a material box for storing liquid rosin scaling powder through a hose, a constant-temperature heating module (6) is arranged in the barrel opening (2), and the discharge valve of the miniature quantitative plunger pump (4) is connected with a heat conduction feeding pipe (42), the heat-conducting feeding pipe (42) penetrates out of the constant-temperature heating module (6) and is connected with the feeding nozzle (3).

2. The flux dosing device according to claim 1, wherein the suction pipe mouth (41) is arranged on a side wall of the miniature quantitative plunger pump (4), the heat-conducting feeding pipe (42) is connected to a lower end of the miniature quantitative plunger pump (4), at least two symmetrically arranged anti-loosening bayonets (43) are arranged on the periphery side of the pump body of the miniature quantitative plunger pump (4), and a clamping groove adapted to the anti-loosening bayonets (43) is arranged on the inner wall of the barrel body (1).

3. The scaling powder dosing device of claim 1, wherein a heat insulation cushion block (8) is arranged at the top of the miniature quantitative plunger pump (4), a conductive connecting plate (44) is arranged on the upper surface of the heat insulation cushion block (8), the conductive connecting plate (44) is electrically connected with a plunger driving assembly of the miniature quantitative plunger pump (4) through an electric connecting wire led into the heat insulation cushion block (8), and the lithium battery module (5) and the control circuit board are respectively electrically connected with the conductive connecting plate (44).

4. The flux dosing device according to claim 3, wherein the lithium battery module (5) and the control circuit board are arranged in the upper end chamber of the barrel (1), and the lithium battery module (5) and the control circuit board are electrically connected with the conductive connection plate (44) through an elastic terminal connection seat (9).

5. The flux dosing device according to claim 3, wherein a touch-sensitive switch electrically connected to the control circuit board is disposed on an outer wall of the barrel (1).

6. The scaling powder dosing device according to claim 1, wherein an end cap (7) is arranged on the top of the barrel (1), and a charging port electrically connected with the lithium battery module (5) is arranged on the end cap (7).

7. Flux dosing device according to claim 1, characterized in that the cartridge (1) comprises an outer metal cartridge shell (11) and an inner heat insulating lining (12).

8. The flux dosing device according to claim 1, wherein the micro dosing plunger pump (4) is an axial micro plunger pump made of zirconia ceramic.