CN114589028A - Spray gun - Google Patents
Spray gun Download PDFInfo
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- CN114589028A CN114589028A CN202210003898.2A CN202210003898A CN114589028A CN 114589028 A CN114589028 A CN 114589028A CN 202210003898 A CN202210003898 A CN 202210003898A CN 114589028 A CN114589028 A CN 114589028A
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- Prior art keywords
- nozzle
- assembly
- spray gun
- piston
- movable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a spray gun, which comprises a spray gun main body, a piston assembly, a sealing assembly, a firing pin and a nozzle assembly, wherein the piston assembly is arranged on the spray gun main body; the spray gun body is provided with a piston cavity and a movable channel communicated with the piston cavity, one end of the movable channel, which is far away from the piston cavity, is communicated with the nozzle assembly, and the spray gun body is also provided with a feed inlet communicated with the movable channel; the sealing assembly is arranged in the movable channel and positioned on one side of the feed port, which is adjacent to the piston cavity, and is used for blocking the movable channel; the piston assembly is movably arranged in the piston cavity, one end of the firing pin movably penetrates through the sealing assembly and is connected with the piston assembly, and the other end of the firing pin is used for opening or closing the nozzle assembly; the firing pin is adjustably coupled to the seal assembly such that a spacing between an end of the firing pin adjacent the nozzle assembly and the piston assembly is adjustably disposed. So set up, can solve the spray gun and lead to unable sealed nozzle assembly's problem to appear because of firing pin wearing and tearing in the use.
Description
Technical Field
The invention relates to the technical field of mechanical automation, in particular to a spray gun.
Background
A spray gun is a device for spraying a coating material onto the surface of an object to be coated, and the existing types of spray guns mainly include an electrostatic spray gun, an air spray gun, an airless trigger gun, and the like.
The spraying opening and closing of the spray gun are required to be controlled in the daily use process, and closed parts used for closing in the spray gun are easily abraded under the long-term opening and closing control switching, so that the condition that the spray gun is not closed tightly to cause paint leakage is generated.
Disclosure of Invention
The invention mainly aims to provide a spray gun, aiming at solving the sealing problem caused by abrasion in the use process of the spray gun.
In order to achieve the above object, the present invention provides a spray gun comprising a spray gun body, a piston assembly, a sealing assembly, a firing pin, and a nozzle assembly; wherein the content of the first and second substances,
the spray gun main body is provided with a piston cavity and a movable channel communicated with the piston cavity, one end of the movable channel, far away from the piston cavity, is communicated with the nozzle assembly, and the spray gun main body is also provided with a feed inlet communicated with the movable channel;
the sealing assembly is arranged in the movable channel and positioned on one side of the feed port, which is adjacent to the piston cavity, and is used for blocking the movable channel;
the piston assembly is movably arranged in the piston cavity, one end of the firing pin movably penetrates through the sealing assembly and is connected with the piston assembly, and the other end of the firing pin is used for opening or closing the nozzle assembly;
the striker is adjustably coupled to the seal assembly such that a spacing between an end of the striker adjacent the nozzle assembly and the piston assembly is adjustably disposed.
Therefore, the distance between the firing pin and the piston assembly can be adjusted, so that the end part of the firing pin is closer to the nozzle assembly, the end part of the worn firing pin can be in sealing and abutting connection with the nozzle assembly in a closing state, the sealing problem caused by abrasion of the spray gun in the using process is solved, and the service life of the spray gun is prolonged, so that the use cost of the spray gun is reduced.
In some embodiments of the present invention, an end of the firing pin remote from the nozzle assembly is provided with an adjusting threaded section, and the piston assembly is correspondingly provided with a threaded hole in threaded connection with the adjusting threaded section.
When the firing pin is rotated, the axial displacement of the firing pin relative to the piston assembly can be realized; the user can rotate according to the difference of firing pin wearing and tearing degree and adjust corresponding distance to satisfy firing pin can butt seal in nozzle assembly under the closure, avoid the coating to leak outward.
In some embodiments of the present invention, the piston assembly includes a piston body, an elastic restoring member, and a movable seat, the piston body is movably connected to the piston cavity, a receiving groove is concavely formed on a surface of the piston body facing the movable channel, the elastic restoring member is installed in the receiving groove, the movable seat is movably installed in the receiving groove and abuts against the elastic restoring member, and the movable seat is provided with a threaded hole in threaded connection with the adjusting threaded section of the striker.
The movable seat can reciprocate along the axial direction of the accommodating groove, and the movable seat is driven to move through the movement of the piston body in the piston cavity and the elastic reset piece, so that the firing pin is further driven to open and close the nozzle assembly; the firing pin can realize displacement relative to the movable seat through rotation, and the distance adjustment of the nozzle assembly is realized; when the striker or the movable seat is abutted to the stressed part, the movable seat moves along the opposite direction under the action of the elastic reset piece, so that the damage of the spray gun caused by the fact that the striker or the movable seat is excessively abutted to parts is avoided.
In some embodiments of the invention, the threaded hole is arranged through the movable seat, and the end of the striker adjacent to the movable seat is provided with a force-bearing hole;
an avoidance hole is arranged at the bottom of the accommodating groove in a penetrating manner, and the piston assembly further comprises a sealing plug fixedly connected with the avoidance hole;
the piston cavity is provided with a mounting hole in a penetrating mode at the position facing the sealing plug, and the spray gun further comprises a sealing cock which is assembled to the mounting hole and seals the mounting hole.
Consequently, through dismantling sealed cock and sealed end cap, the user can directly rotate the regulation through piston chamber and holding tank to the atress hole, need not dismantle convenient and fast to the spray gun.
In some embodiments of the present invention, when the striker is switched from opening the nozzle assembly to closing the nozzle assembly, the piston body moves towards the movable channel by a distance L1, the movable seat moves away from the movable channel by a distance L2, and the striker moves towards the nozzle assembly by a distance L1-L2.
The actual moving distance L of the striker can be determined according to the values of L2 and L1; when L < L1, the value of L is the length allowance of the striker, and the striker can still realize the abutting sealing to the nozzle assembly under the elastic action of the elastic resetting piece in the abrasion range of L.
In some embodiments of the present invention, the piston body is provided with a guide post axially parallel thereto, and the movable seat is provided with a guide hole slidably connected with the guide post.
The movable seat can move along the axial direction of the guide post when moving in the accommodating groove, and the moving stability of the movable seat is improved.
In some embodiments of the invention, the spray gun further comprises a position detection assembly comprising a position signal transmitter mounted on the piston assembly and a position signal receiver mounted on the spray gun body.
When the piston assembly moves, the position signal emitter emits a moving signal, and the position signal receiver receives the moving signal, so that the movement detection of the piston assembly can be realized.
In some embodiments of the invention, the position signal emitter comprises a detection coil mounted to the piston assembly, and the position signal receiver comprises a sensor mounted to the spray gun body for sensing the position of movement of the detection coil.
The piston assembly moves to drive the detection coil to move axially, and the sensor senses the position movement of the detection coil, so that the movement detection of the piston assembly by the sensor can be realized
In some embodiments of the invention, the nozzle assembly comprises a locking base, a nozzle holder, and a nozzle piece; one end of the locking base is communicated with the movable channel, and one end of the nozzle seat is communicated with the other end of the locking base;
the nozzle piece is inserted and connected on the nozzle seat along the radial direction of the nozzle seat and is provided with a nozzle which is axially communicated with the nozzle seat.
The coating can flow through the locking base and the nozzle seat from the movable channel, and the coating and the nozzle seat are sprayed from the outside through the nozzle of the nozzle piece
In some embodiments of the present invention, the nozzle holder is provided with a first connecting groove at a connecting end of the locking base, and the locking base is provided with a first connecting protrusion which is engaged with the first connecting groove;
the nozzle assembly further comprises a locking nut, and the locking nut is sleeved on the periphery of the connecting section of the locking base and the nozzle.
The nozzle seat and the locking base are fixedly positioned perpendicular to the axial plane of the movable channel through the first connecting protrusion and the first connecting groove; the locking nut is sleeved on the periphery of the connecting section of the locking base and the nozzle, and the locking nut is tightly connected with the locking base and the outer side of the nozzle.
In some embodiments of the invention, the nozzle holder is radially provided with a connecting hole for connecting the nozzle piece, the connecting hole is provided with a second connecting groove at the connecting side of the nozzle piece, and the nozzle piece is provided with a second connecting protrusion which is in embedded connection with the second connecting groove.
The second connecting protrusion and the second connecting groove are used for realizing the fixed positioning of the nozzle seat and the nozzle piece parallel to the radial plane of the movable channel.
In some embodiments of the invention, the nozzle assembly further comprises a nozzle compact and a seal; the nozzle pressing block is arranged in the nozzle seat and is abutted to the nozzle piece; one side of the sealing gasket is abutted with the nozzle piece, and the other side of the sealing gasket is abutted with the locking base.
The sealing gasket is used for increasing the connection sealing property between the locking base and the nozzle seat, the axial stability of the nozzle piece radially inserted into the nozzle seat is improved through the nozzle piece, and the spraying consistency of the coating from the spray gun is further improved.
The spray gun comprises a spray gun body, a piston assembly, a sealing assembly, a firing pin and a nozzle assembly, wherein the piston assembly drives the firing pin to reciprocate so as to open or close the nozzle assembly, the firing pin with adjustable spacing is arranged, when the spray gun is used for a long time and the firing pin is worn and cannot move to abut against the sealing nozzle assembly, the spacing between the firing pin and the nozzle assembly is adjusted so that the other end of the firing pin can be in a state of abutting against the nozzle assembly in a sealing manner under the movement, the sealing problem caused by the abrasion of the spray gun in the using process is solved, the service life of the spray gun is prolonged, and the use cost of the spray gun is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of the open state of the spray gun of the present invention;
FIG. 2 is a schematic structural view of the spray gun of the present invention in a closed state;
FIG. 3 is a schematic structural view of a locking base of the present invention;
FIG. 4 is a schematic structural view of a nozzle carrier according to the present invention;
fig. 5 is a schematic view of the structure of the nozzle member of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
400 | |
| 110 | Piston |
410 | |
| 111 | |
500 | |
| 112 | The |
510 | |
| 113 | The second |
511 | First connecting |
| 120 | |
520 | |
| 121 | Feed |
521 | First connecting |
| 130 | |
522 | Second connecting |
| 140 | |
530 | |
| 200 | Piston |
531 | Second connecting |
| 210 | Piston body | 540 | |
| 211 | |
550 | |
| 220 | |
560 | |
| 230 | |
600 | |
| 240 | Accommodating |
610 | |
| 250 | |
620 | |
| 300 | Seal assembly |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention.
The invention provides a spray gun, which comprises a spray gun body 100, a piston assembly 200, a sealing assembly 300, a firing pin 400 and a nozzle assembly 500, wherein the firing pin 400 is driven to reciprocate by the piston assembly 200 to open or close the nozzle assembly 500, the firing pin 400 with adjustable spacing is arranged, when the firing pin 400 is worn and cannot move to abut against the sealing nozzle assembly 500 due to long-term use of the spray gun, the spacing between the firing pin 400 and the nozzle assembly 500 is adjusted, so that the other end of the firing pin 400 can be in a state of moving to be in sealing abutment against the nozzle assembly 500, the sealing problem caused by wear in the use process of the spray gun is solved, the service life of the spray gun is prolonged, and the use cost of the spray gun is reduced.
Referring to fig. 1-2, the spray gun body 100 is provided with a piston cavity 110 and a movable passage 120 communicated with the piston cavity 110, one end of the movable passage 120 far away from the piston cavity 110 is communicated with a nozzle assembly 500, and the spray gun body 100 is further provided with a feed inlet 121 communicated with the movable passage 120; the coating is added into the movable channel 120 through the feed inlet 121, and self-spraying is realized through the nozzle assembly 500; the movable passage 120, the piston chamber 110 and the nozzle assembly 500 may be connected by a screw, a fitting, or a bolt, and the connection manner is not limited in detail.
Wherein the sealing assembly 300 is installed in the movable passage 120 and located at one side of the feed port 121 adjacent to the piston chamber 110, and the sealing assembly 300 is used for blocking the movable passage 120; so as to prevent the paint in the movable passage 120 from flowing into the piston chamber 110 and affecting the normal operation of the parts in the piston chamber 110.
Further, the piston assembly 200 is movably installed in the piston chamber 110, one end of the plunger 400 movably passes through the sealing assembly 300 and is connected to the piston assembly 200, and the other end of the plunger 400 is used for opening or closing the nozzle assembly 500; the reciprocating displacement transmission of the firing pin 400 is realized through the piston motion of the piston assembly 200 in the piston cavity 110, and when the piston assembly 200 drives the firing pin 400 to abut against the nozzle assembly 500, the closing of the spray gun is realized, so that the coating cannot be sprayed out from the nozzle assembly 500; when the piston assembly 200 drives the striker 400 to move away from the nozzle assembly 500, the spray gun is opened, and the coating is sprayed out from the nozzle assembly 500.
In this embodiment, the striker 400 is adjustably coupled to the seal assembly 300 such that the spacing between the end of the striker 400 adjacent the nozzle assembly 500 and the piston assembly 200 is adjustably positioned; because the reciprocating distance of the piston assembly 200 in the piston cavity 110 is a fixed distance, when the spray gun is used for a long time and one end of the firing pin 400 close to the nozzle assembly 500 is worn, a gap between the firing pin 400 and the nozzle assembly 500 is worn when the piston assembly 200 is driven to be in a closed state, so that the abutting and sealing effect on the nozzle assembly 500 cannot be generated; therefore, the end of the firing pin 400 can be closer to the nozzle assembly 500 by adjusting the distance between the firing pin 400 and the piston assembly 200, the end of the firing pin 400 after being worn can be in sealing abutment with the nozzle assembly 500 in a closed state, the sealing problem caused by wear of the spray gun in the using process is solved, the service life of the spray gun is prolonged, and the use cost of the spray gun is reduced.
It should be noted that the adjustable connection between the plunger 400 and the plunger assembly 200 may be a threaded connection, and that axial displacement of the plunger 400 relative to the plunger assembly 200 is achieved by rotating the plunger 400; a plurality of hole sites can be arranged along the axial direction of the piston assembly 200, the firing pin 400 is provided with connecting keys matched with the hole sites, and different positions of the firing pin 400 can be adjusted by adjusting the installation of the connecting keys and different hole sites; there are many ways in which the connection can be adjusted, not to mention them.
Preferably, an adjusting threaded section is provided at an end of the plunger 400 away from the nozzle assembly 500, and the piston assembly 200 is correspondingly provided with a threaded hole in threaded connection with the adjusting threaded section; when the striker 400 is rotated, axial displacement of the striker 400 relative to the piston assembly 200 is achieved; the user can rotate and adjust the corresponding distance according to the different wear degrees of the striker 400, so that the striker 400 can be abutted and sealed on the nozzle assembly 500 in the closed state, and the coating is prevented from leaking.
In this embodiment, the piston assembly 200 includes a piston body 210, an elastic reset piece 220 and a movable seat 230, the piston body 210 is movably connected to the piston cavity 110, an accommodating groove 240 is concavely formed on a surface of the piston body 210 facing the movable channel 120, the elastic reset piece 220 is installed in the accommodating groove 240, the movable seat 230 is movably installed in the accommodating groove 240 and abuts against the elastic reset piece 220, and the movable seat 230 is provided with a threaded hole in threaded connection with the adjusting threaded section of the striker 400; the movable seat 230 can reciprocate along the axial direction of the accommodating groove 240, and through the movement of the piston body 210 in the piston cavity 110, the elastic reset piece 220 drives the movable seat 230 to move, and further drives the striker 400 to open and close the nozzle assembly 500; the striker 400 can be rotated to displace relative to the movable seat 230, thereby adjusting the distance between the nozzle assemblies 500; when the striker 400 or the movable seat 230 is abutted and stressed, the movable seat 230 moves in the opposite direction under the action of the elastic resetting piece 220, so that the damage of the spray gun caused by the fact that the striker 400 or the movable seat 230 is excessively abutted to parts is avoided.
The elastic restoring member 220 may be a member having an elastic force, such as an elastic sheet or a spring, and is not particularly limited herein.
Specifically, the threaded hole is disposed through the movable seat 230, and the striker 400 is provided with a force receiving hole 410 at an end portion adjacent to the movable seat 230; a user can rotate and adjust the stressed hole 410 through the end part of the movable seat 230, so that the distance between the striker 400 and the nozzle assembly 500 can be adjusted, and the phenomenon that the striker 400 is deformed to influence the sealing effect due to the fact that the user directly twists the striker 400 is avoided; it should be noted that the force-receiving hole 410 may be a straight line, a cross, or a hexagon socket, and the shape thereof is not limited herein.
Further, an avoidance hole is formed at the bottom of the accommodating groove 240 in a penetrating manner, and the piston assembly 200 further comprises a sealing plug 250 fixedly connected with the avoidance hole; the rotation operation of the force-receiving hole 410 inside the accommodating groove 240 from the avoiding hole can be realized by detaching the sealing plug 250.
Wherein, the piston cavity 110 is provided with a mounting hole in a penetrating way at a position facing the sealing plug 250, the spray gun further comprises a sealing cock 111, and the sealing cock 111 is assembled to and seals the mounting hole; the user can perform related operations on the parts in the piston cavity 110 by detaching the sealing cock 111; therefore, by disassembling the sealing plug 111 and the sealing plug 250, a user can directly rotate and adjust the force-bearing hole 410 through the piston cavity 110 and the accommodating groove 240 without disassembling the spray gun, which is convenient and fast.
In this embodiment, the elastic restoring member 220 is a spring, the diameter of the spring is larger than that of the sealing plug 250, and the sealing plug 250 is located in the radial cross section of the spring, so that a user can pass through the spring to adjust the force-receiving hole 410 after detaching the sealing plug 111 and the sealing plug 250, thereby avoiding interference of the elastic restoring member 220 in adjustment of the force-receiving hole 410.
Referring to fig. 2, when the striker 400 is switched from the opening of the nozzle assembly 500 to the closing of the nozzle assembly 500, the distance that the piston body 210 moves towards the movable channel 120 is L1, the distance that the movable seat 230 moves away from the movable channel 120 is L2, and the distance that the striker 400 moves towards the nozzle assembly 500 is L1-L2; the actual moving distance L of the striker 400 can be determined according to the values of L2 and L1; when L < L1, the value of L is the length margin of the striker 400 that can be worn, and within the wear range of L, the striker 400 can still achieve abutting sealing against the nozzle assembly 500 under the elastic action of the elastic restoring member 220.
In this embodiment, the sealing assembly 300 has an abutting portion protruding from a side thereof adjacent to the piston body 210; when the striker 400 closes the nozzle assembly 500, the abutment portion can abut against the movable seat 230, so that the movable seat 230 moves away from the movable passage 120.
Further, the piston body 210 is provided with a guide post 211 parallel to the axial direction thereof, and the movable seat 230 is provided with a guide hole slidably connected with the guide post 211; when the movable seat 230 moves in the accommodating groove 240, the movable seat can move along the axial direction of the guide post 211, so that the movement stability of the movable seat 230 is improved.
Specifically, the piston cavity 110 includes a first cavity and a second cavity, the first cavity is communicated with the movable passage 120, the second cavity is communicated with the first cavity, and the inner diameter of the first cavity is smaller than that of the second cavity; the piston body 210 comprises a first section and a second section which are connected in sequence, the outer diameter of the first section is smaller than that of the second section, the first section is in sealing connection with the first cavity, the first section is concavely provided with an accommodating cavity, and the second section is in sealing connection with the second cavity; the movable passage 120 and the piston chamber 110 form a first aeration chamber 112 at a side of the second section adjacent to the first section and a second aeration chamber 113 at a side of the second section remote from the first section, the spray gun body 100 is provided with a first connector 130 communicating with the first aeration chamber 112, and the spray gun body 100 is provided with a second connector 140 communicating with the second aeration chamber 113.
Through the above-mentioned structure of the piston cavity 110 and the piston body 210, the piston cavity 110 can be moved from the side away from the nozzle assembly 500 by pressurizing the first joint 130, so that the striker 400 opens the nozzle assembly 500; the piston chamber 110 is moved from the side close to the nozzle assembly 500 by pressurizing the second joint 140, so that the striker 400 closes the nozzle assembly 500; the first connector 130 and the second connector 140 may be connected to an inflation valve or a hydraulic valve to realize corresponding pressurization of the first inflation cavity 112 or the second inflation cavity 113, which is not limited herein.
In this embodiment, the spray gun further comprises a position detection assembly 600, the position detection assembly 600 comprises a position signal transmitter 610 and a position signal receiver 620, the position signal transmitter 610 is mounted on the piston assembly 200, and the position signal receiver 620 is mounted on the spray gun body 100; when the piston assembly 200 is activated, the position signal transmitter 610 transmits a movement signal, and the position signal receiver 620 receives the movement signal to detect the movement of the piston assembly 200.
Specifically, the position signal emitter 610 includes a detection coil mounted to the piston assembly 200, and the position signal receiver 620 includes a sensor mounted to the spray gun body 100 for sensing a movement position of the detection coil; the piston assembly 200 moves to drive the detection coil to move axially, and the sensor senses the position movement of the detection coil, so that the movement detection of the piston assembly 200 by the sensor can be realized; in this embodiment, the detection coil is sleeved outside the piston body 210, and the detection coil realizes the recording of the displacement of the piston body 210 along with the movement of the piston body, thereby realizing the signal feedback of the state of the spray gun and monitoring the working state of the spray gun in real time.
Referring to fig. 3-5, the nozzle assembly 500 includes a locking base 510, a nozzle holder 520, and a nozzle member 530; one end of the locking base 510 is communicated with the movable passage 120, and one end of the nozzle holder 520 is communicated with the other end of the locking base 510; the coating material is allowed to flow from the moving channel 120 through the locking base 510 and the nozzle holder 520.
Wherein the firing pin 400 provides a closeable seal to the nozzle assembly 500 by abutting the locking base 510, preferably, the firing pin 400 is spherical in shape at its end to better provide a sealing abutment to the locking base 510.
In the embodiment, the nozzle member 530 is inserted into the nozzle holder 520 in the radial direction of the nozzle holder 520, and is provided with a nozzle hole axially communicating with the nozzle holder 520; the coating material is sprayed from the outside through the nozzle hole of the nozzle member 530 with the nozzle holder 520.
Specifically; the nozzle holder 520 is provided with a first connection groove 521 at the connection end of the locking base 510, and the locking base 510 is provided with a first connection protrusion 511 which is engaged with the first connection groove 521; the fixed positioning of the nozzle holder 520 and the locking base 510 perpendicular to the axial plane of the movable passage 120 is achieved by the first coupling projection 511 and the first coupling groove 521.
The nozzle assembly 500 further includes a locking nut 540, and the locking nut 540 is sleeved on the periphery of the connection section of the locking base 510 and the nozzle, so as to fasten and connect the locking nut 540 to the locking base 510 and the nozzle.
Further, a connecting hole for connecting the nozzle piece 530 is radially formed in the nozzle holder 520, a second connecting groove 522 is formed in the connecting hole at the connecting side of the nozzle piece 530, and the nozzle piece 530 is provided with a second connecting protrusion 531 in embedded connection with the second connecting groove 522; the fixed positioning of the nozzle holder 520 and the nozzle piece 530 parallel to the radial plane of the movable passage 120 is achieved by the second coupling projection 531 and the second coupling groove 522.
Therefore, the movable passage 120 horizontally arranged in the axial direction is used as a reference plane, the locking base 510 and the nozzle holder 520 are fixed in a Y-axis positioning fit manner, and the nozzle holder 520 and the nozzle piece 530 are fixed in a Z-axis positioning fit manner, so that the nozzle assembly 500 has the capability of accurate positioning while meeting the requirement of quick assembly and disassembly, the consistency of spraying the coating from a spray gun can be improved, and the quality of spraying operation is improved.
Preferably, the nozzle assembly 500 further comprises a nozzle compact 550 and a gasket 560; the nozzle pressing block 550 is arranged in the nozzle seat 520 and is abutted with the nozzle piece 530; one side of the gasket 560 abuts against the nozzle member 530, and the other side abuts against the locking base 510; the sealing gasket 560 is used for increasing the connection sealing performance between the locking base 510 and the nozzle seat 520, and the axial stability of the nozzle member 530 radially inserted into the nozzle seat 520 is improved through the nozzle member 530, so that the spraying consistency of the coating material from the spray gun is further improved.
To sum up, referring to fig. 1, when the spray gun needs to be switched from the open state to the closed state, the external control solenoid valve is switched to allow compressed air to enter from the second joint 140 of the spray gun, the piston body 210 moves from the position close to the moving channel under the action of the compressed air, the movable seat 230 moves to the right under the action of the spring, the striker 400 is in threaded connection with the movable seat 230 until the spherical surface on the right side of the striker 400 abuts against the locking base 510 and stops, the piston body 210 continues to move to the right until the spherical surface abuts against the side wall of the piston cavity 110 and stops, the spray gun is closed and cuts off the continuous spraying of the coating, the detection coil 230 is detected by the sensor in the closed state, and at this time, the movable seat 230 is sealed and detected by the sensor in the closed stateThe contact of the members forms a gap of L2, the moving distance of piston body 210 is L1, the moving distance of striker 400 is L1-L2, the spherical surface of striker 400 fits well with the inner conical surface of lock base 510 and maintains a constant pressure of F0＝kX0(k0Is the spring constant of the compression spring, X0The initial amount of compression of the spring).
Referring to fig. 2, when the spray gun needs to be switched from the off state to the on state, the external control solenoid valve is switched again, so that compressed air enters from the first connector 130 of the spray gun, the piston body 210 moves to the left under the action of the compressed air, the striker 400 moves together with the movable seat 230 away from the locking base 510, so that the spray gun is opened, at this time, paint can be sprayed after being atomized through the nozzle piece 530, finally, the piston body 210 stops after being moved to abut against the side wall of the piston cavity 110, and the induction coil is detected by the sensor of the opened position.
After the spray gun of the embodiment is used for a certain time, a sealing valve formed when the firing pin 400 abuts against the locking base 510 generates a small amount of abrasion, and the spray gun has a small amount of leakage in a closed state, at this time, all pressure inside the spray gun only needs to be removed (coating pressure and compressed air pressure), and after the sealing plug 111 and the sealing plug 250 are respectively detached, the stress hole 410 is adjusted and adjusted by using a corresponding tool, so that a spherical surface of one side of the firing pin 400 close to the nozzle assembly 500 is well attached to an inner conical surface of the locking base 510, and the problem of leakage of the spray gun can be solved after other parts are restored to a normal state.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (12)
1. A spray gun comprising a spray gun body, a piston assembly, a seal assembly, a firing pin, and a nozzle assembly; wherein the content of the first and second substances,
the spray gun main body is provided with a piston cavity and a movable channel communicated with the piston cavity, one end of the movable channel, far away from the piston cavity, is communicated with the nozzle assembly, and the spray gun main body is also provided with a feed inlet communicated with the movable channel;
the sealing assembly is arranged in the movable channel and positioned on one side of the feed port, which is adjacent to the piston cavity, and is used for blocking the movable channel;
the piston assembly is movably arranged in the piston cavity, one end of the firing pin movably penetrates through the sealing assembly and is connected with the piston assembly, and the other end of the firing pin is used for opening or closing the nozzle assembly;
the striker is adjustably coupled to the seal assembly such that a spacing between an end of the striker adjacent the nozzle assembly and the piston assembly is adjustably disposed.
2. The spray gun of claim 1 wherein an end of said firing pin remote from said spray tip assembly is provided with an adjustment threaded section and said piston assembly is correspondingly provided with a threaded bore in threaded engagement with said adjustment threaded section.
3. The spray gun of claim 2 wherein said piston assembly includes a piston body, an elastic return element, and a movable seat, said piston body is movably connected to said piston cavity, a receiving groove is concavely formed on a surface of said piston body facing said movable passage, said elastic return element is mounted in said receiving groove, said movable seat is movably mounted in said receiving groove and abuts against said elastic return element, and said movable seat is provided with a threaded hole in threaded connection with said adjusting threaded section of said striker.
4. The spray gun of claim 3 wherein said threaded bore is disposed through said movable block, and wherein said striker has a force-receiving bore disposed at an end adjacent said movable block;
an avoidance hole is arranged at the bottom of the accommodating groove in a penetrating manner, and the piston assembly further comprises a sealing plug fixedly connected with the avoidance hole;
the piston cavity is provided with a mounting hole in a penetrating mode at the position facing the sealing plug, and the spray gun further comprises a sealing cock which is assembled to the mounting hole and seals the mounting hole.
5. The spray gun of claim 3 wherein said piston body moves toward said movable passage a distance L when said striker moves from opening said nozzle assembly to closing said nozzle assembly1The moving distance of the movable seat towards the direction far away from the movable channel is L2The distance L that the firing pin moves towards the nozzle assembly is equal to L1-L2。
6. The spray gun of claim 3 wherein said piston body is provided with a guide post axially parallel thereto, said movable seat being provided with a guide hole slidably connected to said guide post.
7. The spray gun of claim 1 further comprising a position sensing assembly including a position signal transmitter mounted on said piston assembly and a position signal receiver mounted on said spray gun body.
8. The spray gun of claim 7 wherein said position signal transmitter includes a detection coil mounted to said piston assembly and said position signal receiver includes a sensor mounted to said spray gun body for sensing the position of movement of said detection coil.
9. The spray gun of claim 1 wherein said nozzle assembly includes a locking base, a nozzle holder, and a nozzle member;
one end of the locking base is communicated with the movable channel, and one end of the nozzle seat is communicated with the other end of the locking base;
the nozzle piece is inserted on the nozzle seat along the radial direction of the nozzle seat and is provided with a nozzle which is axially communicated with the nozzle seat.
10. The spray gun as claimed in claim 9, wherein the nozzle holder is provided with a first coupling groove at a coupling end of the locking base, and the locking base is provided with a first coupling projection to be fitted into the first coupling groove;
the nozzle assembly further comprises a locking nut, and the locking nut is sleeved on the periphery of the connecting section of the locking base and the nozzle.
11. The spray gun according to claim 9 or 10, wherein the nozzle holder is radially provided with a connecting hole for connecting the nozzle member, the connecting hole is provided with a second connecting groove at a connecting side of the nozzle member, and the nozzle member is provided with a second connecting projection which is fitted and connected with the second connecting groove.
12. The spray gun of claim 10 wherein said nozzle assembly further comprises a nozzle block and a gasket; the nozzle pressing block is arranged in the nozzle seat and is abutted to the nozzle piece; one side of the sealing gasket is abutted with the nozzle piece, and the other side of the sealing gasket is abutted with the locking base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210003898.2A CN114589028B (en) | 2022-01-05 | 2022-01-05 | Spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210003898.2A CN114589028B (en) | 2022-01-05 | 2022-01-05 | Spray gun |
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| Publication Number | Publication Date |
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| CN114589028A true CN114589028A (en) | 2022-06-07 |
| CN114589028B CN114589028B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210003898.2A Active CN114589028B (en) | 2022-01-05 | 2022-01-05 | Spray gun |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115532494A (en) * | 2022-11-25 | 2022-12-30 | 河北恒诚环保科技有限公司 | Composite spray gun for denitration |
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| Publication number | Publication date |
|---|---|
| CN114589028B (en) | 2023-03-14 |
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