CN220215330U

CN220215330U - Paint spray gun

Info

Publication number: CN220215330U
Application number: CN202321676580.7U
Authority: CN
Inventors: 刘自锁; 卢文俊
Original assignee: Changzhou Xirun Machinery Manufacturing Co ltd
Current assignee: Changzhou Xirun Machinery Manufacturing Co ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2023-12-22
Anticipated expiration: 2033-06-29

Abstract

The utility model relates to the technical field of spray gun equipment, in particular to a paint spray gun, which comprises a gun body, wherein one end of the gun body is provided with a flow regulating mechanism, a gun needle is penetrated in the gun body, the gun needle extends out of the other end of the gun body, the other end of the gun body is connected with a sleeve sleeved on the extending part of the gun needle, the tail end of the sleeve is provided with a liquid nozzle which can be plugged by the tip of the gun needle, the sleeve is sequentially provided with a gun needle cavity, a liquid pipe and an air pipe from inside to outside, the gun needle cavity, the liquid pipe and the air pipe are not communicated with each other, the sleeve close to the liquid nozzle is provided with a liquid storage area communicated with the liquid pipe, the tail end of the air pipe is provided with a bending part with 90 degrees, the end of the bending part is provided with a gas nozzle, and the center line of the gas nozzle is perpendicular to the center line of the liquid nozzle. The spray gun can accurately adjust the spraying size of the spray gun through the flow adjusting mechanism, the gas nozzle center line on the bending part and the center line of the liquid nozzle form a vertical relationship through the bending part with 90 degrees at the tail end of the air pipe, so that the spraying angle of the spray gun is larger, and the efficiency is improved.

Description

Paint spray gun

Technical Field

The utility model relates to the technical field of spray gun equipment, in particular to a paint spray gun.

Background

A spray gun is a device that uses liquid or compressed air to rapidly release as a motive force. The spray gun can be directly used for coating in industry, and can also be installed in automatic equipment. After the hose or the rigid tube (can) is produced, in order to avoid the reaction of the filler with the wall of the tube (can), it is necessary to spray the inner wall of the tube (can) with a corrosion-preventing material.

In the prior art, the spraying angle of the spray gun is generally 45 degrees and 75 degrees, and the arc surface area of the paint formed by one turn of the pipe (tank) is not too large, so the spray gun sprays in the pipe (tank) for a long time. In addition, the size of the sprayed paint spray is required to be adjusted for pipes (cans) with different specifications, an experienced operator is required to adjust the gas flow or the liquid flow, and certain errors still exist, so that the paint is wasted.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects in the prior art, and provides a paint spray gun which has larger spraying angle and adjustable spraying size.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a coating spray gun, includes the rifle body, the one end of rifle body is equipped with flow control mechanism, wears to be equipped with the rifle needle in the rifle body, the rifle needle stretches out the other end of rifle body, and the other end of rifle body is connected with the sleeve of cover on the rifle needle extension, telescopic end is equipped with the liquid spout that can be blocked by the tip of rifle needle, and the sleeve has set gradually rifle needle chamber, liquid pipe and trachea from inside to outside, and the three is not linked together each other, is equipped with the liquid storage area with liquid pipe intercommunication on the sleeve that is close to liquid spout department, tracheal end has 90 degrees bending parts, gas spout has been seted up to the tip of bending parts, the central line of gas spout is perpendicular with the central line of liquid spout.

Further, one end of the gun needle far away from the tip is connected with the gun needle seat, a piston is sleeved outside the gun needle close to the gun needle seat, the piston is positioned in the gun body, the other surface of the gun needle seat is connected with a screw rod, the screw rod penetrates through the flow regulating mechanism, and the end part of the screw rod is connected with a nut. Through the rotation nut for the lead screw rotates, is convenient for install the rifle needle.

Still further, flow control mechanism includes internal and external screw thread screwed pipe, revolves cover, swivel nut and top cover, be equipped with the external screw thread on the outer wall of rifle body one end, the swivel nut passes through the screw thread and is connected with the rifle body, has the step hole in the swivel nut, top cover installs in the step hole and with screwed pipe fixed connection, is equipped with the spring between top cover and the rifle needle file, revolve cover and screwed pipe fixed connection, and one end cover of revolve the cover is outside the swivel nut. The rotating sleeve is rotated to enable the threaded pipe to move along the screw rod, the top sleeve is driven to move along the screw rod along the threaded pipe, the distance between the top sleeve and the gun needle seat is changed, the spring is compressed, and the elastic force acts on the gun needle seat.

Furthermore, the rotary sleeve is internally provided with a step hole, a stop block is arranged in the step hole, and a pressure spring is arranged between the stop block and the bottom wall of the step hole. The stop dog is used for installing a pressure spring, and the pressure spring plays a buffering role in the rotating process of the rotary sleeve.

Furthermore, the edge of the screw sleeve, which is close to one end of the screw sleeve, is provided with scales. The rotation of the rotary sleeve is converted into the movement of the threaded pipe on the screw rod, and the set scale can be displayed visually for an operator so as to be convenient for accurate adjustment.

Still further, the middle section of the rifle body is equipped with a breach, the front portion of breach is the rifle body before, the piston sets up in the rifle body before, and the surface of rifle body before is equipped with two air inlets, has first air flue and the second air flue with two air inlets intercommunication respectively in the rifle body before, the terminal of first air flue just faces the piston terminal surface. The notch is arranged, so that the installation condition can be conveniently observed when the gun needle is assembled; gas from one inlet port may push the piston along the first gas path.

Still further, the rear portion of breach is the back rifle body, the surface of back rifle body has the inlet, is equipped with liquid runner and gas runner in the back rifle body, gas runner and second air flue intercommunication, and with the trachea intercommunication, liquid runner and liquid pipe intercommunication. The liquid passing through the liquid inlet enters the liquid pipe through the liquid flow channel, and the gas enters the gas flow channel after entering the second air channel through the other air inlet and then flows into the air pipe.

Furthermore, one end of the rear gun body, which is close to the notch, is provided with a cock sleeved on the gun needle, a sealing ring is arranged between the cock and the gun needle, and the other end of the rear gun body is connected with a gland through a locking nut. The cock is used for ensuring that gas and liquid in the rear gun body do not flow out of the gun body, and the gland is used for sealing the other end of the rear gun body.

Furthermore, a connecting body is arranged at the joint of the rear gun body and the gland on the gun needle. The coupling body corresponds to a piston.

Further, a process hole and a mounting hole are further formed in the gun body, a plug is arranged on the process hole, and an O-shaped ring is arranged between the plug and the process hole. The process holes play a role in maintenance, and the mounting holes are used for being mounted on the automation equipment.

The beneficial effects of the utility model are as follows: according to the utility model, the size of spray sprayed by the spray gun can be accurately regulated through the flow regulating mechanism, and the gas nozzle center line on the bent part and the center line of the liquid nozzle form a vertical relationship through arranging the 90-degree bent part at the tail end of the air pipe, so that the sprayed spray angle is larger, the efficiency is improved, and the cost is saved.

Drawings

The utility model will be further described with reference to the drawings and embodiments.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of the structure of fig. 1 in another direction.

The cross-sectional view of fig. 1 of fig. 3 in the direction A-A.

Fig. 4 is an enlarged schematic view of the structure at B in fig. 3.

Fig. 5 is an enlarged schematic view of the structure at C in fig. 3.

In the figure: 1. the gun body, 11, notch, 12, air inlet, 13, liquid inlet, 1-1, front gun body, 1-2, rear gun body, 2, flow regulating mechanism, 21, threaded pipe, 22, turnbuckle, 23, turnbuckle, 24, top sleeve, 25, spring, 26, stop, 27, pressure spring, 221, scale, 3, gun needle, 4, sleeve, 41, liquid spout, 42, gun needle cavity, 43, liquid pipe, 44, air pipe, 411, liquid storage area, 441, bending part, 4411, gas spout, 5, gun needle seat, 6, piston, 7, screw rod, 8, nut, 9, cock, 10, locking nut, 14, gland, 15, connector, 16, process hole, 17, mounting hole, 18.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings. These drawings are simplified schematic views illustrating the basic structure of the present utility model by way of illustration only, and thus show only the constitution related to the present utility model.

As shown in fig. 1 to 5, a paint spray gun comprises a gun body 1, wherein one end of the gun body 1 is provided with a flow regulating mechanism 2, a gun needle 3 is penetrated in the gun body 1, the gun needle 3 extends out of the other end of the gun body 1, the other end of the gun body 1 is connected with a sleeve 4 sleeved on the extending part of the gun needle 1, the tail end of the sleeve 4 is provided with a liquid nozzle 41 which can be blocked by the tip of the gun needle 3, the sleeve 4 is sequentially provided with a gun needle cavity 42, a liquid pipe 43 and an air pipe 44 from inside to outside, the gun needle cavity 42, the liquid pipe 43 and the air pipe 44 are not communicated with each other, a liquid storage area 411 communicated with the liquid pipe 43 is arranged on the sleeve close to the liquid nozzle 41, the tail end of the air pipe 44 is provided with a bending part 441 of 90 degrees, and the end of the bending part 441 is provided with a gas nozzle 4411, and the center line of the gas nozzle 4411 is perpendicular to the center line of the liquid nozzle 41. As shown in fig. 5, the liquid storage area 411 has a conical structure and is blocked by the conical tip of the gun needle 3.

As shown in fig. 4, one end of the gun needle 3 far away from the tip is connected with the gun needle seat 5, a piston 6 is sleeved outside the gun needle 3 close to the gun needle seat 5, the piston 6 is positioned in the gun body 1, the other surface of the gun needle seat 5 is connected with a screw rod 7, the screw rod 7 penetrates through the flow regulating mechanism 2, and the end part of the screw rod 7 is connected with a nut 8.

The flow regulating mechanism 2 comprises a threaded tube 21 with internal and external threads, a rotary sleeve 22, a threaded sleeve 23 and a top sleeve 24, wherein the external threads are arranged on the outer wall of one end of the gun body 1, the threaded sleeve 23 is connected with the gun body 1 through threads, a step hole is formed in the threaded sleeve 23, the top sleeve 24 is installed in the step hole and fixedly connected with the threaded tube 21, a spring 25 is arranged between the top sleeve 24 and the gun needle seat 5, the rotary sleeve 22 is fixedly connected with the threaded tube 21, and one end of the rotary sleeve 22 is sleeved outside the threaded sleeve 23. The screw sleeve 22 is internally provided with a step hole, a stop block 26 is arranged in the step hole, the stop block 26 is in threaded connection with the threaded pipe 21, and a pressure spring 27 is arranged between the stop block 26 and the bottom wall of the step hole. In addition, as shown in fig. 1 and 2, the edge of the turnbuckle 22 near one end of the turnbuckle 23 is provided with a scale 221.

As shown in fig. 4, a notch 11 is arranged in the middle section of the gun body 1, the front part of the notch 11 is a front gun body 1-1, a piston is arranged in the front gun body 1-1, two air inlets 12 are arranged on the outer surface of the front gun body 1-1, a first air passage and a second air passage which are respectively communicated with the two air inlets 12 are arranged in the front gun body 1-1, and the tail end of the first air passage is opposite to the end face of the piston 6. The rear part of the notch 11 is provided with a rear gun body 1-2, the outer surface of the rear gun body 1-2 is provided with a liquid inlet 13, a liquid flow passage and a gas flow passage are arranged in the rear gun body 1-2, the gas flow passage is communicated with a second air passage and is communicated with an air pipe 44, and the liquid flow passage is communicated with a liquid pipe 43. One end of the rear gun body 1-2, which is close to the notch 11, is provided with a cock 9 sleeved on the gun needle 3, a sealing ring is arranged between the cock 9 and the gun needle 3, and the other end of the rear gun body 1-2 is connected with a gland 14 through a lock nut 10.

And a connecting body 15 is arranged at the joint of the rear gun body 1-2 and the gland 14 on the gun needle 3. The gun body 1 is also provided with a process hole 16 and a mounting hole 17, the process hole 16 is provided with a plug 18, and an O-shaped ring is arranged between the plug 18 and the process hole 16.

The specific working process comprises the following steps:

the pressurized gas enters the front gun body 1-1 through one gas inlet 12, reaches the piston 6 (shown by a dotted line) along the first gas channel, pushes the piston 6 to move towards the flow regulating mechanism 2, forms a passage with the other gas inlet 12, flows towards the rear gun body 1-2 (shown by a dotted line) through the second gas channel, enters the gas pipe 44 of the sleeve 4 (shown by a two-dot chain line) through the gas channel, simultaneously, the connecting body 15 is pushed by the gas to move towards the sleeve 4, the pressurized liquid enters the rear gun body 1-2, enters the liquid pipe 43 of the sleeve 4 along the liquid channel (shown by a solid line), finally reaches the liquid storage area 411 of the conical structure, and the tip part of the gun needle 3 moves along with the movement due to the movement of the piston 6 towards the flow regulating mechanism 2, so that the liquid is sprayed out through the nozzle 41, the gas nozzle 4411 opened at the end of the bending part 441, and the sprayed liquid is sprayed to realize 90 degrees; if the spraying size of the liquid spray needs to be reduced, the rotating sleeve 22 of the flow regulating mechanism 2 is rotated, so that the threaded pipe 21 moves towards the piston 6 along the screw rod 7, the top sleeve 24 is driven to move along the screw rod 7 along the threaded pipe 21, the distance between the top sleeve 24 and the gun needle seat 5 is reduced, the spring 25 is compressed, the elastic force acts on the gun needle seat 5, the gun needle seat 5 slightly moves towards the sleeve 4, the piston 6 is also driven to slightly move towards the sleeve 4, the inlet size of the second air passage is changed, the air flow entering the gun body is regulated, and meanwhile, the inlet size of the liquid flow passage is changed.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. A paint spray gun comprising a gun body, characterized in that: one end of the gun body is provided with a flow regulating mechanism, a gun needle is penetrated in the gun body, the gun needle extends out of the other end of the gun body, the other end of the gun body is connected with a sleeve sleeved on the extending part of the gun needle, the tail end of the sleeve is provided with a liquid nozzle which can be blocked by the tip of the gun needle, the sleeve is sequentially provided with a gun needle cavity, a liquid pipe and an air pipe from inside to outside, the three parts are not communicated with each other, a liquid storage area communicated with the liquid pipe is arranged on the sleeve close to the liquid nozzle, the tail end of the air pipe is provided with a bending part with 90 degrees, the end part of the bending part is provided with a gas nozzle, and the central line of the gas nozzle is perpendicular to the central line of the liquid nozzle.

2. The paint spray gun of claim 1 wherein: the gun needle is characterized in that one end of the gun needle, far away from the tip, is connected with a gun needle seat, a piston is sleeved outside the gun needle, which is close to the gun needle seat, the piston is positioned in the gun body, the other surface of the gun needle seat is connected with a screw rod, the screw rod penetrates through the flow regulating mechanism, and the end part of the screw rod is connected with a nut.

3. The paint spray gun of claim 2 wherein: the flow regulating mechanism comprises a threaded pipe with internal and external threads, a rotating sleeve, a threaded sleeve and a top sleeve, wherein the external threads are arranged on the outer wall of one end of the gun body, the threaded sleeve is connected with the gun body through threads, a step hole is formed in the threaded sleeve, the top sleeve is installed in the step hole and fixedly connected with the threaded pipe, a spring is arranged between the top sleeve and the gun needle seat, the rotating sleeve is fixedly connected with the threaded pipe, and one end of the rotating sleeve is sleeved outside the threaded sleeve.

4. A paint spray gun according to claim 3, wherein: the screw sleeve is internally provided with a step hole, a stop block is arranged in the step hole and is in threaded connection with the threaded pipe, and a pressure spring is arranged between the stop block and the bottom wall of the step hole.

5. A paint spray gun according to claim 3, wherein: the edge of the screw sleeve, which is close to one end of the screw sleeve, is provided with scales.

6. The paint spray gun of claim 2 wherein: the middle section of the gun body is provided with a notch, the front part of the notch is a front gun body, the piston is arranged in the front gun body, the outer surface of the front gun body is provided with two air inlets, a first air passage and a second air passage which are respectively communicated with the two air inlets are arranged in the front gun body, and the tail end of the first air passage is opposite to the end face of the piston.

7. The paint spray gun of claim 6 wherein: the rear part of the notch is a rear gun body, the outer surface of the rear gun body is provided with a liquid inlet, a liquid flow passage and a gas flow passage are arranged in the rear gun body, the gas flow passage is communicated with the second air passage and the air pipe, and the liquid flow passage is communicated with the liquid pipe.

8. The paint spray gun of claim 7 wherein: one end of the rear gun body, which is close to the notch, is provided with a cock sleeved on the gun needle, a sealing ring is arranged between the cock and the gun needle, and the other end of the rear gun body is connected with a gland through a locking nut.

9. The paint spray gun of claim 8 wherein: the joint of the rear gun body and the gland is provided with a connecting body.

10. The paint spray gun of claim 1 wherein: the gun body is also provided with a process hole and a mounting hole, the process hole is provided with a plug, and an O-shaped ring is arranged between the plug and the process hole.