CN218423486U

CN218423486U - High-speed injection precision pulse driving structure

Info

Publication number: CN218423486U
Application number: CN202222099139.9U
Authority: CN
Inventors: 卢革委; 卢如栩
Original assignee: Zhejiang Boma Electromechanical Technology Co ltd
Current assignee: Zhejiang Boma Electromechanical Technology Co ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2023-02-03
Anticipated expiration: 2032-08-10

Abstract

The utility model discloses a high-speed injection precision pulse driving structure, which comprises an action part and an electromagnetic coil, wherein the electromagnetic coil is electrically connected with a controller; the number of the electromagnetic coils is two, and the two electromagnetic coils are arranged along the axial direction of the action piece; the tail end of the action piece is fixedly connected with a bolt, the action stroke of the bolt is positioned between the two electromagnetic coils, and when the two electromagnetic coils are electrified, the two ends of the bolt in the axial direction are respectively an N pole and an S pole. The utility model discloses a combination drive of two solenoid need not external air pump in order to replace traditional compressed gas to realize punctiform or the line effect of spraying for the structure on the spray gun is simplified, and external pipeline reduces, is favorable to increasing the simple operation nature.

Description

High-speed injection precision pulse driving structure

Technical Field

The utility model relates to a spray gun field, it is very much, relate to a high-speed accurate pulse drive structure that sprays.

Background

In order to ensure that the sprayed liquid can form punctiform liquid drops and be uniformly sprayed, the traditional spray gun generally needs to be connected with an air pump, and the liquid is pumped by negative pressure generated by compressed air so as to be sprayed out from a nozzle.

Such a mode makes the spray gun not only connect and supplies liquid device, still need connect air outlet means such as air pump for pipeline on the spray gun is many, and the structure is complicated, needs certain preparation work before the use, and is comparatively loaded down with trivial details, need arrange the pipeline constantly in use and avoid dragging and knoing, and the operation is comparatively inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one technical problem mentioned in the background art, the present invention provides a high-speed injection precision pulse driving structure to simplify the structure of the spray gun under the function of maintaining high-efficiency injection.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a high-speed injection precise pulse driving structure comprises an action part and an electromagnetic coil, wherein the electromagnetic coil is electrically connected with a controller; the number of the electromagnetic coils is two, and the two electromagnetic coils are arranged along the axial direction of the action piece; the tail end of the action piece is fixedly connected with a bolt, the action stroke of the bolt is located between the two electromagnetic coils, and when the two electromagnetic coils are electrified, the two ends of the bolt in the axial direction are respectively an N pole and an S pole.

Compared with the prior art, the beneficial effects of the utility model are that: the combined driving of the two electromagnetic coils replaces the traditional compressed gas to realize the effect of dot or line injection, so that the structure on the spray gun is simplified, the number of external pipelines is reduced, and the convenience in operation is increased;

the electromagnetic coil drives the action through the magnetic field, and the magnetic field is generated when the electromagnetic coil is switched on, so that the instantaneous driving force can be generated on the action piece, the response is quick, the size of the magnetic field can be adjusted, and the impact strength of the action piece can be conveniently controlled to adjust the spraying effect; two solenoid cooperate the drive jointly, can make drive frequency reach very high for the action piece can keep very high frequency under stable prerequisite and move.

Furthermore, the driving structure comprises a shell, and the action part and the bolt are sleeved in the shell in a penetrating manner.

Furthermore, the driving structure further comprises a stop pin, the stop pin is located on one side, deviating from the action piece, of the bolt in the axial direction, and the stop pin is used for eliminating the inertia force of the bolt, so that the bolt can have higher action frequency.

Furthermore, the stop pin is in threaded connection with the shell, so that the range of the action space of the bolt can be conveniently adjusted.

Furthermore, the driving structure further comprises an ejector rod used for driving the action part to reset, the ejector rod is sleeved in the shell in a penetrating mode, one end of the ejector rod abuts against the bolt, the other end of the ejector rod is connected with a spring, the spring provides thrust towards one side of the bolt along the axial direction for the ejector rod, the action part can be kept abutting against the nozzle in a natural state, and liquid leakage is avoided.

Furthermore, one end of the shell is provided with an adjuster, the adjuster comprises a top block in threaded connection with the shell, and two ends of the spring respectively abut against the top rod and the top block, so that the tightness of the spring can be conveniently adjusted.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the whole structure of the spray gun of the present invention.

In the figure: 11. a fluid chamber; 2. a nozzle; 3. a valve body; 31. a liquid inlet passage; 4. an electromagnetic coil; 5. an action member; 51. a bolt; 6. a top rod; 61. a spring; 62. a regulator; 7. and (7) a stop pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below clearly and completely, and it should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, in the present embodiment, a nozzle 2 is installed at one end of a spray gun, a liquid chamber 11 is disposed inside the spray gun, and liquid is filled in the liquid chamber 11 and is sprayed out from the nozzle 2 after a certain pressure is applied; traditional spray gun can form punctiform liquid drop, evenly spray in order to guarantee spun liquid, generally need connect the air pump, produces negative pressure suction liquid through compressed gas, makes liquid spout from 2 departments of nozzle, and such mode makes the spray gun need connect air outlet means such as air pump, and the pipeline on the spray gun is many, and the structure is complicated, and the preparation work in the use is loaded down with trivial details, and the operation is inconvenient, also can not reach fine injection effect.

In the embodiment, a compressed air suction mode is not adopted, but a common thimble structure for blocking the nozzle 2 opening in the spray gun is improved into the action piece 5 in the embodiment, the head part of the action piece 5 is abutted against the liquid channel of the nozzle 2, and when the spray gun is not used, the action piece 5 blocks the nozzle 2, so that liquid in the liquid cavity 11 does not leak under a static state; when the liquid jet nozzle is used, liquid is poured into the liquid cavity 11 at a certain pressure, the action piece 5 is driven to reciprocate axially at the moment, the head of the action piece 5 repeatedly impacts the inner side of the nozzle 2, under certain impact strength, the liquid at the liquid channel of the nozzle 2 is quickly extruded and flushed out under impact, so that point-shaped liquid drops are formed at the nozzle 2 to be jetted, and the jetting effect at the nozzle 2 is fully continuous due to repeated high-frequency impact.

In order to ensure good spraying effect during impact, the nozzle 2 is constructed to comprise a through hole, the inner side of the nozzle 2 is a concave spherical surface, the opening at the inner end of the through hole is positioned in the center of the spherical surface, the thimble is used for blocking the end part of the nozzle 2 to be a round head matched with the spherical surface, during impact, the round head extrudes liquid at the spherical surface into the through hole, and the liquid rapidly passes through the through hole with small size under such rapid impact, and is subjected to great pressure, so that the liquid is extruded from the through hole under the pressure; the mode has good adaptability to liquid with different viscosities, and can realize ejection by increasing proper impact force to liquid with large viscosity, so that the adaptability is strong.

In order to drive the reciprocating motion of the action piece 5, in the embodiment, a form of bidirectional driving of a double-electromagnetic coil 4 is adopted, and a back-and-forth driving force is generated on the action piece 5, specifically, two electromagnetic coils 4 are arranged, the two electromagnetic coils 4 are coaxial and are arranged around the spray gun, the two electromagnetic coils 4 are electrically connected to a controller, and the on-off, positive-reverse connection and other control are performed through the controller; the tail end of the action piece 5 is fixedly connected with a bolt 51, the bolt 51 is slidably sleeved in the spray gun, the action stroke of the bolt 51 is positioned between the two electromagnetic coils 4, when the two electromagnetic coils 4 are electrified, corresponding magnetic fields are respectively generated, the two axial ends of the bolt 51 are respectively an N pole and an S pole, the two ends can be respectively subjected to the magnetic force action of the two electromagnetic coils 4, correspondingly, each electromagnetic coil 4 can realize positive and reverse connection to obtain magnetic fields in positive and negative directions, and then, forces in two directions can be generated on the magnetic poles corresponding to the corresponding positions.

Therefore, in operation, under the control of the controller, the two electromagnetic coils 4 are simultaneously switched on, so that the two electromagnetic coils 4 both generate corresponding magnetic fields, and the two electromagnetic coils 4 can generate forces in the same direction to two poles of the plug pin 51, specifically, one side is an attraction force and the other side is a repulsion force, so that the plug pin 51 moves to one side in the axial direction; then, the two electromagnetic coils 4 are simultaneously changed in direction, and the magnetic field directions of the two electromagnetic coils 4 are changed, so that the two electromagnetic coils 4 generate forces in the other direction on the two poles of the plug pin 51, and the plug pin 51 moves to the other side in the axial direction.

When the magnetic field directions of the two electromagnetic coils 4 are changed in a cyclic reciprocating manner during the connection, the plug pin 51 can move back and forth in the spray gun in the axial direction, so as to drive the action piece 5 to continuously impact the nozzle 2 back and forth, thereby realizing the injection.

In such a manner of controlling the motion by the magnetic field, since the magnetic field generated after the electromagnetic coil 4 is energized is instantaneous, the motion of the plug pin 51 is driven to be very fast, so that a fast motion response can be realized, and then the fast commutation of the plug pin 51 can be realized by fast switching the direction of the magnetic field; the electromagnetic coils 4 are simply used for attracting and repelling one side of the plug pin 51, so that the plug pin 51 is difficult to control to reciprocate quickly, but in the embodiment, the plug pin 51 is arranged between the two electromagnetic coils 4, so that the two ends of the plug pin 51 are controlled by the electromagnetic coils 4, the driving efficiency is fully enhanced, the generated control force is stable, the strength is high, the movement speed is doubled, and the stable and quick reciprocating control can be realized; the impact strength of the action piece 5 can be increased by increasing the magnetic field strength of the electromagnetic coil 4, so that the effect of accelerating the liquid jet speed of the spray gun is realized; the impact frequency of the action piece 5 can be increased by increasing the positive and negative switching frequency of the two electromagnetic coils 4, so that continuous high-frequency high-speed injection can be realized.

The driving force generated by the on/off of the electromagnetic coil 4 is instantaneous and quick in driving effect for the latch 51, but after the electromagnetic coil 4 drives the latch 51 in one direction, the latch 51 has an inertia force in the direction, and when the electromagnetic coil 4 changes the direction of the magnetic field to drive the latch 51 to move reversely, the inertia force needs to be firstly removed, so that the reverse driving can be performed.

Under the effect, firstly, the action stroke of the bolt 51 is relatively large, a larger internal space is needed, and furthermore, when strong impact force is needed, a larger electromagnetic driving force is needed, and the inertia of the bolt 51 is increased due to the large electromagnetic driving force, so that the magnetic field intensity or time needed for resolving the inertia is also increased, so that the time needed by the action piece 5 to complete one stroke is difficult to reduce.

Therefore, in order to solve the above mentioned problem, the inertial force of the plug pin 51 towards the side of the action member 5 can be absorbed by striking the nozzle 2, and for the inertial force away from the side of the action member 5, a stop pin 7 is added in the spray gun in the present embodiment, and the stop pin 7 is axially inserted in the spray gun and located at the side of the plug pin 51 axially away from the action member 5; through presetting the position of backing pin 7, make under the natural state bolt 51 with have a section clearance between backing pin 7, make bolt 51 have certain activity space.

When the electromagnetic coil 4 is switched on, the plug pin 51 moves towards the stop pin 7 and then collides with the stop pin 7 after moving for a certain distance, so that the inertia force is resolved through the stop pin 7, the plug pin 51 can be directly stopped, the plug pin 51 can be directly and instantaneously driven to reversely move after the electromagnetic coil 4 switches the magnetic field direction, and then the action piece 5 collides with the nozzle 2 to resolve the inertia force.

And the stop pin 7 can be connected into the spray gun through threads, and a user can rotate the stop pin 7 to adjust the length of the gap so as to adapt to working requirements.

In order to enable the actuating member 5 to stably abut against the nozzle 2 when the spray gun does not work, so as to seal the nozzle 2 and avoid liquid leakage, in this embodiment, a limiting structure is further provided in the spray gun, specifically, the limiting structure includes a push rod 6 that axially abuts against the bolt 51, the push rod 6 is located on one side of the bolt 51 that axially deviates from the actuating member 5, in order to avoid interference, the push rod 6 is movably sleeved in the stopper pin 7, one end of the push rod 6 abuts against the bolt 51, the other end of the push rod is provided with a spring 61, and the spring 61 provides an ejecting force for the push rod 6, so that the push rod 6 can eject the bolt 51, and in a natural state, the push rod 6 can abut against the bolt 51, so that the actuating member 5 can keep blocking the nozzle 2.

Correspondingly, an adjuster 62 is arranged at the tail end of the spray gun, namely the tail end of the spray gun axially opposite to the nozzle 2, the adjuster 62 comprises an ejector block in threaded connection with the tail end of the nozzle 2, one end of the spring 61 abuts against the ejector rod 6, the other end abuts against the ejector block, the tensioning effect of the spring 61 can be adjusted through screwing the adjuster 62, and then the ejection force of the action piece 5 is adjusted, specifically, in the work process, the adjuster 62 can be screwed out by one end distance, so that the ejection force of the spring 61 on the ejector rod 6 is reduced or eliminated, and further, the influence of the ejection force of the spring 61 on the driving force of the electromagnetic coil 4 is avoided; it is also possible to replace the spring 61.

For the concrete structure of spray gun, in order to guarantee to simplify the structure, guarantee inside liquid mobility and leakproofness, the spray gun includes a pipy casing, liquid chamber 11 is located in the casing, nozzle 2 install in casing axial wherein one end, regulator 62 install in casing axial other end, action piece 5, bolt 51, ejector pin 6, spring 61, first backing pin 71, second backing pin 72 etc. all locate in the casing, and for the installation solenoid 4, the spray gun is installed on one on the valve body 3, two solenoid 4 encircle locate on the casing and be fixed in on the valve body 3 to realize supporting fixed effect.

Preferably, control grab handle, switch, circuit wiring, liquid pipeline etc. of spray gun can combine in on the valve body 3, also be provided with a intercommunication on the valve body 3 in the spray gun the feed liquor way 31 of sap cavity 11, through outside feed liquor equipment to pour into liquid and provide certain hydraulic pressure in the sap cavity 11.

It should be added that the specific structure of the controller is a housing and an internal PCB, the controller controls the electromagnetic coil 4, in this embodiment, the controller further includes an overload protection unit and a high temperature protection unit, and the controller is used to disconnect the circuit after current detection and temperature detection, so as to avoid circuit overload and over-high temperature inside the spray gun respectively.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A high-speed injection precise pulse driving structure is characterized by comprising an action piece (5) and an electromagnetic coil (4), wherein the electromagnetic coil (4) is electrically connected with a controller; the number of the electromagnetic coils (4) is two, and the two electromagnetic coils are arranged along the axial direction of the action piece (5); the tail end of the action piece (5) is fixedly connected with a bolt (51), the action stroke of the bolt (51) is positioned between the two electromagnetic coils (4), and when the two electromagnetic coils (4) are electrified, the two ends of the bolt (51) in the axial direction are respectively an N pole and an S pole.

2. A high-speed jet precision pulse driving structure as claimed in claim 1, wherein said driving structure comprises a housing, and said action member (5) and said plug pin (51) are all sleeved in said housing.

3. A high-speed jet precision pulse driving structure as claimed in claim 2, wherein said driving structure further comprises a stop pin (7), said stop pin (7) is located on a side of said plug pin (51) facing away from said action member (5) in the axial direction.

4. A high-speed jet precision pulse driving structure as claimed in claim 3, wherein said stopper pin (7) is screw-coupled with said housing.

5. The high-speed injection precision pulse driving structure according to claim 2, characterized in that the driving structure further comprises a push rod (6) for driving the actuating member (5) to reset, the push rod (6) is sleeved in the housing, one end of the push rod (6) is abutted against the plug pin (51), the other end of the push rod is connected with a spring (61), and the spring (61) provides the push force to the push rod (6) in the axial direction toward one side of the plug pin (51).

6. A high-speed jet precision pulse driving structure as claimed in claim 5, wherein one end of said housing is provided with an adjuster (62), said adjuster comprises a top block in threaded connection with said housing, and two ends of said spring (61) respectively abut against said top rod (6) and said top block.