CN102679644A

CN102679644A - Refrigerant filling gun

Info

Publication number: CN102679644A
Application number: CN2012101644628A
Authority: CN
Inventors: 张果; 张松林; 周志伟
Original assignee: Ulvac Orient Chengdu Co Ltd
Current assignee: Ulvac Orient Chengdu Co Ltd
Priority date: 2012-05-25
Filing date: 2012-05-25
Publication date: 2012-09-19
Anticipated expiration: 2032-05-25
Also published as: CN102679644B

Abstract

The invention discloses a refrigerant filling gun, which solves the problems of poor security, low filling speed, bad filling precision and poor-wear-resistance seal material in the existing filling gun. A plurality of holes arranged on a tube wall (14) are respectively in movable fitting with steel balls (15); the steel balls (15) are matched with a slot and a boss on a quick coupling (16); the tube wall (14) is in axially sliding match with a cutting sleeve (2); a first spring (17) is arranged between a gun head (1) and the cutting sleeve (2); a checking plate (3) is fixedly connected with the cutting sleeve (2); the gun head (1) is in axial connection with a valve body (4); the gun head is fixedly connected with a microswitch (10) and a pin shaft (30); a hole (32) is arranged on each of the two opposite walls of a skewer (31); and the holes (32) are hinged with a shaft (33) arranged on the cutting sleeve (2); the skewer (31) is hinged with the pin shaft (30); the valve body (4) is axially connected with an air cylinder (7); a piston (8) is arranged at one end of an ejector pin (5) and is positioned in the air cylinder (7); an axial cavity of the valve body (4) is connected with a pneumatic evacuation valve (6) and a pneumatic filling valve (9) respectively; and a second spring (12) is arranged between the piston (8) and the vertical wall of the air cylinder.

Description

The refrigerant charging rifle

Technical field:

The present invention relates to the filled rifle of the refrigerant charging machine in the industries such as air-conditioning and refrigerator.

Background technology:

In industries such as refrigerator and air-conditioning, the cold-producing medium can is a very important production technology, and in the high volume production process, refrigerant charging all is to accomplish through the filled rifle on the refrigerant charging machine.It is not in place that filled rifle on the at present filled machine exists snap joint to be connected with the rifle head, and thimble can not move, and it is slow to fill speed, fills low precision, the problem that encapsulant is not wear-resisting.

Summary of the invention:

The purpose of this invention is to provide a kind of snap joint and be connected accurately with the rifle head, compact conformation, security is good, and it is fast to fill speed, and it is high to fill precision, and the encapsulant wearability is good, refrigerant charging rifle easy to use.

The present invention is achieved in that

Have on the refrigerant charging rifle of the present invention, rifle head 1 and barrel 14 that snap joint 16 is connected some holes respectively with steel ball 15 movingly, steel ball 15 different station respectively with snap joint 16 on groove and boss cooperate; The inside diameter surface of the external diameter surface of barrel 14 and cutting ferrule 2 has first spring 17 axially movingly between rifle head 1 and the cutting ferrule 2, check-out console 3 and cutting ferrule 2 are in succession; Rifle head 1 is connected with valve body 4 horizontal axis, and rifle head and microswitch 10, bearing pin 30 are connected, and plate machine 13 upper ends are connected with last fork 31; Respectively have a hole 32 and axle 33 on the cutting ferrule 2 to be hinged on relative two walls of last fork 31, on pitch 31 and be hinged with bearing pin 30, valve body 4 is connected with cylinder 7 horizontal axis; Thimble 5 one ends are equipped with piston 8; Piston is positioned at cylinder 7, and the other end of thimble 5 cooperates with the filled mouth 34 of rifle head 1 through the axial cavity of valve body 4, and the axial cavity of valve body 4 is connected with pneumatic filled valve 9 with pneumatic evacuation valve 6 respectively; Second spring 12 is arranged, the porose ventilation pump of cylinder between piston 8 and the cylinder vertical walls.

Valve body 4 is a cube structure, and two pneumatic filled valves 9 lay respectively at the relative both sides of valve body 4 levels, and rifle head 1 lays respectively at the axially relative both sides of valve body with cylinder 7, and handle 35 and pneumatic evacuation valve lay respectively at the top and bottom of valve body 4.

Cutting ferrule 2 outward flanges have deep-slotted chip breaker to cooperate with steel ball 15.

Handle 35 is connected with heating rod 19, and heating rod 19 is positioned at handle 35 tops.

When cutting ferrule 2 slided backward, the check-out console 3 that is connected with cutting ferrule 2 slided backward, the position that puts in place of reporting to the police, and check-out console will trigger the trigger 22 of microswitch 10.

Sealing gasket 25 between thimble 5 and the valve body 4 adopts wear-resisting nonmetallic materials.

Pneumatic filled valve 9 is made up of cylinder 27 and piston 26, and the spool 28 that piston nose is connected cooperates with filled passway on the axial cavity wall of valve body, and piston 26 1 end faces are connected with the 3rd spring 24, on the relative cylinder end piece in other end the compressed air mouth is arranged.

Pneumatic evacuation valve 6 is made up of cylinder and piston, and the gas port on the axial cavity wall of the spool that piston nose is connected and valve body cooperates, and an end face of piston is connected with the 4th spring 37, on the relative cylinder end piece in other end the compressed air mouth is arranged.

The present invention has following advantage:

1. can detect the position of check-out console 3 through the microswitch of installing on the rifle head 1 10, can judge in this way whether the rifle head is connected with workpiece to put in place, improve the security of filled rifle;

2. fill gun valve body 4 section profiles and adopt rectangular configuration; Horizontal symmetrical distributes pneumatic filled valve 9 on the valve body both sides; Pneumatic evacuation valve 6 is installed in valve body top, therefore, sees filled rifle from the place ahead; Pneumatic evacuation valve, valve body, filled magnetic valve constitute " protruding " font, and such structure makes maintenance very convenient.

3. abandon the general rifle that fills and filled the way that valve uses magnetic valve; Adopt pneumatic filled valve 9 to fill cold-producing medium, the magnetic valve that generally fills rifle receives the restriction of solenoid power, and it is little to promote strength; And pneumatic filled valve 9 does not receive the restriction of solenoid power; Open force is big, and it is big that the ratio that the latus rectum of the filled passage of therefore filled rifle can be done generally fills rifle, can improve filled speed greatly.

4. thimble 5 can slide front and back in filling rifle; When filled rifle and workpiece had just connected, thimble was in back location, had only that thimble just can be to front slide when the junction vacuum is qualified; And back down quick connector and will fill machine and workpiece conducting; After filling completion, thimble slides backward, and breaks off the passage of the machine of filling and workpiece; The sealing gasket 25 of sealing thimble 5 adopts the high abrasion nonmetallic materials, has self-lubricating and wear-resisting characteristic, and wearability improves than the general rifle that fills greatly.

5. handle 35 is equipped with heating rod 19,, can be to filling the rifle heating, heating can make handle be in certain temperature all the time, has increased the comfort of operator's hand, can prevent to fill in the process that fills the rifle temperature and reduce the frostbite operator.

6. see filled rifle from the side, filling rifle is " factory " font structure, ergonomic, more convenient operation.

Description of drawings:

Fig. 1 is Facad structure figure of the present invention.

Fig. 2 is E-E cutaway view of Fig. 1.

Fig. 3 is F-F cutaway view of Fig. 1

Fig. 4 is thimble and cylinder installation diagram.

Fig. 5 is rifle header structure figure.

Fig. 6 rifle head is not connected to bitmap.

Fig. 7 is connected to bitmap for the rifle head.

Fig. 8 is a circuit diagram of the present invention.

The specific embodiment:

One, fill the rifle primary clustering:

The present invention fill rifle mainly by pneumatic filled valve 9, microswitch 10, thimble 5, piston 8, start button 36, pneumatic evacuation valve 6, check-out console 3, fill rifle head 1, trigger 13, heating rod 19, valve body 4, cylinder 7 and form.

Pneumatic filled valve 9 distributes in valve body 4 both sides horizontal symmetrical, and pneumatic evacuation valve 6 is installed in valve body 4 tops, therefore, sees filled rifle from the place ahead, and pneumatic evacuation valve 6, valve body 4, pneumatic filled valve 9 constitute " protruding " fonts; See filled rifle from the side, filling rifle is " factory " font structure.

See from the place ahead, fill gun valve body 4 section profiles and adopt rectangular configuration.

Thimble 5 can slide front and back.Be achieved in that specifically thimble 5 rear ends are equipped with a piston 8; Piston 8 is mounted in the cylinder 7 that fills rifle, and compressed air gets into cylinder 7 from the rear portion of cylinder 7, can promote thimble 5 to front slide; After compressed air was drained, thimble can slide backward under the effect of spring 12.

Detect the position of check-out consoles 3 through filling the microswitch of installing on the rifle head 1 10, thereby can judge whether rifle head 1 and snap joint 16 on the workpiece are connected puts in place.When hand was pulled trigger 13 backward, cutting ferrule 2 can slide backward, and the steel ball 15 on the rifle head 1 can outwards move; Snap joint 16 on the workpiece can be inserted in the rifle head, and after unclamping trigger 13, cutting ferrule 2 moves forward under the effect of spring 17; And steel ball 15 inwardly promoted to fall into the groove of snap joint 16 and pin snap joint; Do not cause steel ball 15 can not fall into the groove of snap joint 16 but also might snap joint 16 be connected to put in place with rifle head 1, it is not in place that this situation is exactly that snap joint 5 is connected with rifle head 3, and cutting ferrule 2 can not be got back to original position this moment; Check-out console 3 is mounted on the cutting ferrule 2; This moment, check-out console 3 can will trigger the trigger of microswitch 10, and microswitch 10 can send corresponding signal, and equipment just can be judged whether rifle head 1 is connected with snap joint 16 and put in place like this.

Heating rod 19 is installed on the handle 35, can be to filling the rifle heating.Be achieved in that specifically heating rod 19 is installed in handle 35 tops, begin heating after heating rod 19 energising, the mode through the heat transmission makes and fills the rifle heating.

Two, working method:

Cocking 13, the snap joint 16 on the workpiece can insert and fill rifle head 1, unclamp trigger 13; Fill rifle head 1 and can pin snap joint; Do not connect with snap joint if fill rifle head 1, microswitch 10 circuit can detect check-out console 3, and equipment will have warning.Put in place if connect, press start button 36, pneumatic evacuation valve 6 moves upward under the effect of spring 37; Equipment begins to vacuumize filling rifle head 1, find time qualified after, thimble 5 backs down snap joint to front slide; Fill machine and workpiece conducting, filled machine is found time to interior, find time qualified after; Pneumatic evacuation valve 6 tops have compressed air to get into, and pneumatic evacuation valve 6 moves downward under the compressed air effect, finds time to stop.Piston 26 in the pneumatic filled valve 9 is motion backward under the effect of spring 24; Begin to fill cold-producing medium, after filling completion, pneumatic filled valve 9 rear portions have compressed air to get into; Piston 26 in the pneumatic filled valve 9 travels forward under the compressed air effect and closes filled passage, fills to stop.Thimble 5 moves backward, and the passage that fills machine and workpiece breaks off.Cocking 13 again, fill rifle head 1 and separate with snap joint on the workpiece, and in the middle of this whole process, heating rod 19 is all heating filled rifle.

Claims

1. refrigerant charging rifle; It is characterized in that having on rifle head (1) and the barrel (14) that snap joint (16) is connected some holes respectively with steel ball (15) movingly, steel ball (15) different station respectively with snap joint (16) on groove and boss cooperate the inside diameter surface axial sliding fit of the external diameter surface of barrel (14) and cutting ferrule (2); Between rifle head (1) and the cutting ferrule (2) first spring (17) is arranged; Check-out console (3) is connected with cutting ferrule (2), and rifle head (1) is connected with valve body (4) horizontal axis, and rifle head and microswitch (10), bearing pin (30) are connected; Plate machine (13) upper end is connected with last fork (31); Respectively have the axle (33) on a hole (32) and the cutting ferrule (2) to be hinged on relative two walls of last fork (31), last fork (31) is hinged with bearing pin (30), and valve body (4) is connected with cylinder (7) horizontal axis; Thimble (5) one ends are equipped with piston (8); Piston is positioned at cylinder (7), and the other end of thimble (5) cooperates with filled mouthful (34) of rifle head (1) through the axial cavity of valve body (4), and the axial cavity of valve body (4) is connected with pneumatic filled valve (9) with pneumatic evacuation valve (6) respectively; Second spring (12) is arranged, the porose ventilation pump of cylinder between piston (8) and the cylinder vertical walls.

2. refrigerant charging rifle according to claim 1 is characterized in that said pneumatic filled valve 9 is two, and two pneumatic filled valves respectively link to each other with an interior filled road of handle (35).

3. refrigerant charging rifle according to claim 1; It is characterized in that valve body (4) is a cube structure; Two pneumatic filled valves (9) lay respectively at the relative both sides of valve body (4) level; Rifle head (1) and cylinder (7) lay respectively at the axially relative both sides of valve body, and handle (35) and pneumatic evacuation valve lay respectively at the top and bottom of valve body (4).

4. refrigerant charging rifle according to claim 1 is characterized in that cutting ferrule (2) outward flange has deep-slotted chip breaker to cooperate with steel ball (15).

5. refrigerant charging rifle according to claim 1 is characterized in that handle (35) and heating rod (19) are connected.

6. refrigerant charging rifle according to claim 1 is characterized in that cutting ferrule (2) when sliding backward, and the check-out console (3) that is connected with cutting ferrule (2) slide rearwardly to alert locations, and check-out console will trigger the trigger (22) of microswitch (10).

7. refrigerant charging rifle according to claim 1 is characterized in that the sealing gasket (25) between thimble (5) and the valve body (4) adopts nonmetallic wear-resistant material.

8. refrigerant charging rifle according to claim 1; It is characterized in that pneumatic filled valve (9) is made up of cylinder (27) and piston (26); Filled passway on the axial cavity wall of the spool that piston nose is connected (28) and valve body cooperates; Piston (26) one end faces are connected with the 3rd spring (24), on the relative cylinder end piece in other end the compressed air mouth are arranged.

9. refrigerant charging rifle according to claim 1; It is characterized in that pneumatic evacuation valve (6) is made up of cylinder and piston; Gas port on the axial cavity wall of the spool that piston nose is connected and valve body cooperates; One end face of piston is connected with the 4th spring (37), on the relative cylinder end piece in other end the compressed air mouth is arranged.