CN202123029U

CN202123029U - Needle valve action and flow controlling device for automatic spray gun

Info

Publication number: CN202123029U
Application number: CN201120042138XU
Authority: CN
Inventors: 蔡基成
Original assignee: TUNG HSIN CHANG CORP
Current assignee: TUNG HSIN CHANG CORP
Priority date: 2011-02-18
Filing date: 2011-02-18
Publication date: 2012-01-25
Anticipated expiration: 2021-02-18

Abstract

A needle valve action and flow controlling device for an automatic spray gun is provided with a spray gun body, a channel is through the spray gun body, a nozzle and a nozzle cap are positioned inside one end of the channel, a tip of a needle is positioned in the nozzle, one end of the needle penetrates through a middle passage of a valve, an annular flange arranged at the other end of the needle is used for holding a buffer spring, a socket cap is arranged at the other end of the needle and connected to the other end of the middle passage of the piston, and thereby the needle is capable of rocking freely. A connecting ring is locked on the gun body, a compression spring is abutted to the inner bottom, facing the spray gun body, of the connecting ring, the piston is abutted by the compression spring, a stop spring is abutted to the outer bottom of the connecting ring, an inner end of a flow fine-adjustment wheel is abutted by the stop spring, the other end of the piston is connected to a central projection of the flow fine-adjustment wheel, the stop spring is sleeved on the central projection, the central projection is connected with the middle of the connecting ring, the flow fine-adjustment wheel is locked under elasticity of the stop spring, and paint discharging flow of the spray gun can be adjusted more conveniently and more quickly through the flow fine-adjustment wheel.

Description

Automatic spray gun is with needle-valve action and volume control device

Technical field

The utility model relates to a kind of automatic spray gun with needle-valve action and volume control device, relates in particular to a kind of stable and more accurate actuating mechanism improvement of needle-valve and mechanism to the more convenient adjustment of discharge flow ability of ejection coating of letting.

Background technology

The convention paint goes out quantity regulating device, like Fig. 1, shown in Figure 2, a spray gun body 1 is arranged; Spray gun body 1 one sides have the passage (consulting the declaratives of the utility model) of gas turnover; Spray gun body 1 has a coating access way (consulting the declaratives of the utility model) in addition, connects a conduit in the spray gun body 1, and conduit one end is located a nozzle and a spray cap (consulting the declaratives of the utility model); The tip of one needle body 16 is arranged in the spray cap, and needle body 16 is positioned the middle of a piston 17; Spray gun body 1 interlocking one connection cover 4, connection cover 4 end faces are established a screw 40, and screw 40 penetrates a voltage regulation screw 8, and voltage regulation screw 8 props up piston 17, lets voltage regulation screw 8 rotate drive piston 17 and moves; On voltage regulation screw 8, add a nut 9 (shown in Figure 2) again to strengthen the fixing of voltage regulation screw 8, still, the structure of this kind convention; Too big owing to atmospheric pressure in the process of spraying; Or push down the inner of piston, and make voltage regulation screw 8 can't carry out the adjustment of immediacy at body 1 other end place, just can seriously have influence on the accuracy of production; And the adjustment of scale can only be by rule of thumb; Let operation can't institutionalization, standardization, and need utilize nut 9 these stop bit spares to reach the function of setting after the adjustment, it uses trouble and not meticulous convenience; Also have a prior problem,, have remaining quantity because be to use coating; This can let the piston in the spray gun body in the action of advance and retreat, deposit toward below; Sometimes have the coating clamping stagnation and live piston 17 or needle body 16, let needle body 16 in moving, produce the phenomenon that has some setbacks of skew, form spraying and move the situation not good that have some setbacks with spraying; Have influence on the stability of total quality; Let needle body 16 bump against nozzle more easily and crooked or break, more have influence on the smoothness of overall operation, also increased the time and the cost that substitute needle body; For the article that more meet actual demand are provided, the creator promptly researches and develops, and uses the problem that is prone to generation that goes up to solve convention.

The utility model content

The main purpose of the utility model is to provide a kind of automatic spray gun with needle-valve action and volume control device; Having some setbacks property of advance and retreat to the piston needle body of convention makes it into flexible type, when piston is run into coating or the termination of needle body when running into viscid coating; There is self-adjusting function in the capital; As buffer, produce vibrations, just can will block solution naturally with the ability of bigger thrust and Free Slosh, to keep the uniform operations property of spraying; The adjustment assembly that will flow again strengthens, and is equipped with the roof pressure improved structure of scale and spring, just can in spraying, overcome the restriction of pressure, accomplishes the action of adjusting the coating discharge flow at any time like a cork.

For reaching above-mentioned purpose, the structure of the utility model is: a spray gun body is arranged, and spray gun body one side has the gas access way; The spray gun body has a coating access way in addition, connects a conduit in the spray gun body, and conduit one end is located a nozzle and a spray cap; The tip that one needle body is arranged in the nozzle; Needle body one end is that the center-aisle by a piston passes, and be provided with a ring bead propping up a buffer spring at the nearly other end of needle body, and the needle body other end is for being provided with a upper shield; Upper shield is connected to the piston center-aisle other end, forms the operating state of needle body in the center-aisle place of piston ability Free Slosh.In addition, the spray gun body connects a connecting ring, and connecting ring withstands a compression spring towards the interior bottom of spray gun body; The compression spring props up piston, and a retaining spring is withstood in the outer bottom of connecting ring, and retaining spring props up the inner of a flow minitrim wheel; Piston connect the flow minitrim wheel one in teat, middle teat passes retaining spring, middle teat and connecting ring join; Utilize the elastic force of retaining spring loosening, the discharge flow of the more convenient rapid adjustment coating of flow minitrim wheel ability by the flow minitrim wheel.

For making your juror can further understand the utility model is to reach technology, means and the effect that predetermined purpose is taked; Lift a preferable feasible embodiment at present; And conjunction with figs. specifies as after; Believe purpose, characteristic and the advantage of the utility model, go deep into and concrete understanding when getting one thus.

Description of drawings

Fig. 1 goes out the quantity regulating device three-dimensional exploded view for the paint of convention;

Fig. 2 goes out the quantity regulating device cutaway view for the paint of another convention;

Fig. 3 is that the utility model automatic spray gun is with needle-valve action and volume control device three-dimensional exploded view;

Fig. 4 is the part combination three-dimensional exploded view of the utility model;

Fig. 5 is that the automatic spray gun of the utility model moves and the volume control device cutaway view with needle-valve;

Cutaway view when Fig. 6 implements action for the utility model needle body.

Reference numeral

(convention)

1 spray gun body

16 needle bodies, 17 pistons

4 connection covers, 40 screws

8 voltage regulation screws, 9 nuts

(the utility model)

1 spray gun body, 11 conduits

13 spray caps

14 ring cowlings, 15 nozzles

16 needle bodies, 161 ring beads

17 pistons, 18 buffer springs

19 upper shields

2 blocks, 3 coating access ways

4 connecting rings, 5 compression springs

6 retaining springs

Teat in the 7 flow minitrim wheels 71

The specific embodiment

Shown in Figure 6 like the 3rd Fig. 3 to the six, for a kind of automatic spray gun of this creation utility model moves and volume control device with needle-valve, a spray gun body 1 is arranged; Spray gun body 1 one sides have the passage of gas turnover, and (be a block 2 in the accompanying drawings, block 2 is provided with a gas feed and adjusts gas port with a gas vent and, is the air pressure control section; The passage of said gas turnover is under the state that a control circuit leaves, and gas gets into, the action that moves after the piston of stating after letting 17 produces; Get into control circuit then when the state that closes; Gas stops to get into, the state that lets whole mechanism freedom of entry move, at this moment; Piston 17 is just promoted forward by the ad hoc compression spring 5 of the utility model and produces action); Spray gun body 1 is provided with a coating access way 3 in addition, connects a conduit 11 in the spray gun body 1, conduit 11 1 ends locate a nozzle 15 (being to be positioned place, side in the conduit 11) and a spray cap 13 (be positioned at spray gun body 1 foreign side, and can interlocking in spray gun body 1); The tip that one needle body 16 is arranged in the nozzle 15; Needle body 16 1 ends (tip) are that the center-aisle by a piston 17 passes, and be provided with a ring bead 161 propping up a buffer spring 18 (ring bead 161 can be at least one nut) at the needle body 16 nearly other ends, and needle body 16 other ends are for being provided with a upper shield 19; Upper shield 19 is connected in the center-aisle other end of piston; Form the operating state of needle body 16 in the center-aisle place of piston 17 ability Free Slosh, upper shield 19 interlockings are in the center-aisle other end place of piston 17, and the state that can be in Free Slosh with formation needle body 16 at the center-aisle of piston 17 (has slight gap between center-aisle and needle body; It moves like Fig. 5 to state shown in Figure 6); In addition, interlocking one connecting ring 4 outside spray gun body 1 other end (other end place that refers to conduit 11), connecting ring 4 withstand a compression spring 5 towards the interior bottom of spray gun body 1; Compression spring 5 props up piston 17; A retaining spring 6 is withstood in connecting ring 4 outer bottoms, and retaining spring 6 props up the inner of a flow minitrim wheel 7, and flow minitrim wheel 7 has teat 71 in; Piston 17 connect flow minitrim wheel 7 one in (middle teat 71 can be opened making in 7 minutes with the flow minitrim wheel, and winding is accomplished again at teat 71 places; Teat 71 also is to adjust the particular design that holds piston 17 other end places in this; The enforcement of making zero during also convenient the adjustment); Middle teat 71 passes retaining spring 6; Middle teat 71 and connecting ring 4 bolts just can utilize the elastic force of retaining spring 6 loosening by flow minitrim wheel 7, the discharge flow of the more convenient rapid adjustment spray gun coating of flow minitrim wheel 7 abilities.More be provided with a scale and a wear-resisting lines in flow minitrim wheel 7 appearances.More be provided with an indication graticule in connecting ring 4 appearances.

Structure in sum, the utility model are used flexible speciality, and the discharge flow of having accomplished automatic spray gun coating moves upward and the improvement on two great institutions on the FLOW CONTROL; Mainly be the buffer-type design of needle body, when after piston 17 does not receive air pressure, moving, only suppress in the mobile process with compression spring 5 elastic force; If run into the remaining of coating in the spray gun body 1, can make piston 17 produce the state of up perk, at this moment the utility model is provided with the gap because of the passage at needle body 16 and piston 17; Needle body 16 can just can let piston 17 unaffected, successfully advances toward producing Free Slosh from all directions; Just can soon remaining coating be taken advantage of a situation pushes away, so, and the smoothness of needle body in propelling stroke of just promoting piston; It can produce rocking of needle body in certain scope, its action is as shown in Figure 6; In addition; Also can be with the effectiveness protection needle body 16 of buffering; When needle body 16 dashes forward when moving in the opening that props up nozzle 15 side, just can because of buffer spring 18 produces needle bodies 16 can be in the reverse reverse buffering function that moves of moment backward, this is to utilize the elastic force of buffer spring 18 to reach; To promote the service life of needle body, improved convention and severed needle body because of excessive impact or therefore reduce problem such as useful life.Therefore, the utility model can be guaranteed the stability and the smoothness of piston, needle body action; Next is the part of adjustment coating discharge-amount, and the utilization dual spring reaches the outer flow minitrim wheel that holds, in hold the function of piston, and flow minitrim wheel 7 entire outer diameter strengthen, and manipulate more easily; Its external diameter is big; The torsion that can adjust becomes big; Push piston forward or unclamp holding backward more easily piston; Can reach the function of adjusting flow immediately, and the precision of adjustment is more accurate, utilize the degrees wheel (graduated part among Fig. 3) be located on the fifth wheel 4 can reach before and after displacement adjustment and rotation adjustment make zero and scale shows function; And because of flow minitrim wheel 7 external diameters are big, its outer set scale adjustment in rotation can be more accurate, more accurate; So the utility model integral body can provide good use property, be a complete mechanism different with convention.

The above is the detailed description of preferred embodiment of the utility model and graphic; Be not to be used for limiting the utility model; All scopes of the utility model should be as the criterion with following claim; The embodiment and the approximate construction of the spirit variation similar with it of all claims all should be contained in the utility model.

Claims

1. an automatic spray gun is characterized in that with needle-valve action and volume control device a spray gun body is arranged; Spray gun body one side has a gas access way, and the spray gun body has a coating access way in addition, connects a conduit in the spray gun body; Conduit one end is located a nozzle and a spray cap, and the tip of a needle body is arranged in the nozzle, and needle body one end is passed by the center-aisle of a piston; Be provided with a ring bead to prop up a buffer spring at the nearly other end of needle body; And the needle body other end is for being provided with a upper shield, and upper shield is connected in the center-aisle other end of piston, forms the operating state of needle body in the center-aisle place of piston ability Free Slosh.

2. automatic spray gun according to claim 1 is characterized in that with needle-valve action and volume control device the spray gun body connects a connecting ring; Connecting ring withstands a compression spring towards the interior bottom of spray gun body, the compression spring props up piston, and a retaining spring is withstood in the outer bottom of connecting ring; Retaining spring props up the inner of a flow minitrim wheel; The flow minitrim wheel has teat in, and middle teat passes retaining spring, and middle teat is connected with connecting ring; Utilize the elastic force of retaining spring loosening by the flow minitrim wheel, the flow minitrim wheel can more convenient discharge flow of accurately finely tuning spray gun coating fast.

3. automatic spray gun according to claim 2 is characterized in that with needle-valve action and volume control device, is provided with a scale and a wear-resisting lines in flow minitrim wheel appearance.

4. automatic spray gun according to claim 2 is characterized in that with needle-valve action and volume control device, is provided with an indication graticule in the connecting ring appearance.