CN202316250U

CN202316250U - Flow control mechanism of foaming gun

Info

Publication number: CN202316250U
Application number: CN2011203930324U
Authority: CN
Inventors: 梁海军
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-17
Filing date: 2011-10-17
Publication date: 2012-07-11
Anticipated expiration: 2021-10-17

Abstract

The utility model discloses a flow control mechanism of a foaming gun. The flow control mechanism of the foaming gun comprises a screw and a knob, wherein the knob and the screw are circumferentially fixed, the knob and a gun body are axially fixed, the knob is rotated to drive the screw to move axially, a mounting cavity is arranged in the knob, a fixed part used for axially fixing the knob is arranged in the mounting cavity, the fixed part is fixedly connected with the gun body, a through hole is arranged in the fixed part along the axial direction of the fixed part, and the screw is in threaded connection with the through hole. The control mechanism has the advantages of simple structure and convenience for processing; and the production cost of the foaming gun is effectively reduced.

Description

The foam gun flow control device

Technical field

The utility model relates to a kind of foam gun, particularly relates to the flow control device of foam gun.

Background technology

On architectural decoration, often need use expanding foam solution, expanding foam solution mainly is to be used for the slit between the sheet material is applied, can the slit place of shutoff between sheet material after staying expanding foam solution between the sheet material and solidifying.Expanding foam solution is generally realized by means of foam gun when spraying.The structure of foam gun mainly comprises rifle body and gun barrel, is provided with shank in the gun barrel, and the rifle body is provided with adapter and trigger, and adapter is used for being connected with foamed pot, and trigger is connected with shank.When pulling trigger; Shank can be followed trigger and moved together; Shank under the drive of trigger after the motion of the rear direction of rifle body; Can form the gap between the set rifle mouth of the front end of shank and gun barrel leading section, expanding foam solution from then on gap location flows out to the outside of gun barrel, and the size in this gap is relevant with the flow of expanding foam solution.

For adapting to different construction requirements; On foam gun, generally need be provided for governor motion that the flow of expanding foam solution is regulated, this governor motion is arranged on the rear end side of rifle body, and structure generally comprises knob and screw rod; Knob with respect to the rifle axon to fixing; Circumferentially fixing with respect to screw rod, behind the turning knob, knob can drive screw rod and do axially-movable.The coaxial setting of shank in screw rod and the foam gun, screw rod are after changing axial location, and correspondingly the ultimate range of the axially-movable that can carry out of shank also just is able to confirm, thereby can realize the adjusting to the foam gun flow.Existing knob to realize and the rifle body between fixing; Generally be on the rifle body, positioning sleeve to be set; Positioning sleeve after knob passes positioning sleeve, need be provided for limiting the jump ring of knob axial location through fixing between set bolt realization and the rifle body at the dorsal part of positioning sleeve.Screw rod is plugged in knob the inner, and the inner of screw rod is threaded with swivel nut, and swivel nut is a prism, and the sliding cavity match with swivel nut is set in the rifle body, shank and swivel nut near the end can be in contact with one another.

The governor motion complex structure of this structure, the inconvenient machining of foam gun.

The utility model content

The purpose of the utility model is: a kind of foam gun flow control device simple in structure is provided.

For reaching the technical measures that said purpose is taked: a kind of foam gun flow control device, comprise screw rod and knob, knob and screw rod are circumferentially fixing; Knob and rifle axon are to fixing, and turning knob can drive the screw axial motion; Be provided with installation cavity in knob inside, in installation cavity, be provided with the fixture that is used for the axial restraint knob, fixture and rifle body are connected; Fixture inside axially is provided with through hole along it, and screw rod is connected with through hole whorl.

Said installation cavity has opening toward the outer side, is fixed with closure member at this opening part, and closure member and screw rod are circumferentially fixing, and screw rod can endwisely slip with respect to closure member.

Screw rod is a polyhedron towards the distolateral of closure member, on the inner surface of closure member, is provided with the blind hole that matches with this polyhedron.

Said closure member is threaded with the interior installation cavity of knob.

On the outer surface of closure member, be provided with some block convex bodys.

In knob in distolateral being provided with to bulge loop, said fixture is provided with export-oriented boss, export-oriented boss matches to bulge loop with interior.

Said fixture is threaded with the rifle body, and the outer distolateral of fixture is polyhedron.

On the rifle body, be provided with cavity volume, the inner end of knob is provided with the undergauge plush copper, and the undergauge plush copper is plugged in the cavity volume with gap.

Said knob is truncated cone-shaped, and the outer peripheral face of knob is provided with some planes or inner concave arc surface.

The utlity model has following beneficial effect: realize the axial restraint of knob with respect to the rifle body through fixture; And fixture is connected with screw flight; Behind turning knob; Screw rod can carry out axially-movable in fixture, the rearward end of shank can contact with the front end of screw rod in the foam gun, and this just can realize the flow of foam gun is regulated.This governor motion simple in structure, foam gun are convenient to processing, the processing cost that can effectively save foam gun.

Description of drawings

Fig. 1 is the longitudinal sectional view after this governor motion is assembled together with foam gun.

Fig. 2 is the structural representation after this governor motion is assembled together with foam gun.

Fig. 3 is the longitudinal sectional view of this governor motion.

Fig. 4 is the structural representation of knob in this governor motion.

The specific embodiment

The structure of foam gun comprises rifle body 4, gun barrel 1 and the handle that is connected together, is coaxially arranged with shank 2 in the gun barrel 1, and shank 2 links with the trigger 3 that is hinged on the rifle body 4, and when pulling trigger 3, trigger 3 can drive shank 2 and in gun barrel 1, endwisely slip.On rifle body 4, be provided with governor motion versatilely with gun barrel 1 a relative side; This governor motion is used for contacting with the rearward end of shank 2; Be used to change the maximum sliding distance of shank 2 in gun barrel 1, and then reach the purpose that the flow of foam gun expanding foam solution is regulated.

The structure of this governor motion comprises screw rod 11 and knob 7, and knob 7 is with respect to rifle body 4 axial restraints, circumferentially rotatable, and screw rod 11 is circumferentially fixing with respect to knob 7, axially slidably.

Knob 7 is a hollow, and its inside is provided with installation cavity, and described screw rod 11 is positioned at installation cavity.Installation cavity connects along knob 7 axial directions; In installation cavity opening toward the outer side, be provided with closure member 8; Closure member 8 is used to make installation cavity to be in closed state at outboard end, and knob 7 also is circumferentially fixing through realizing closure member 8 and connecting of screw rod 11 with screw rod 11.Specifically be, closure member 8 itself has certain axial width, and the inner face of closure member 8 is provided with blind hole 10, and the outer end of screw rod 11 is plugged in this blind hole 10 with gap.The outer end of screw rod 11 is a four prisms cylinder, and the outer end structure of the internal structure of blind hole 10 and screw rod 11 is complementary.Can be the plug-in connecting mode between closure member 8 and the knob 7; It also can be the mode that is threaded; When between is the mode that is threaded, generally need on both thread joint face, adopt the mode of brushing viscose glue to realize firm connection between the two.Like this, behind turning knob 7, knob 7 can drive screw rod 11 and circumferentially rotate, and screw rod 11 can slide vertically.For ease of realizing cooperating of closure member 8 and installation cavity, on the outer face of closure member 8, be provided with some block convex bodys 9, these convex bodys 9 have at interval each other, make when assembling closure member 8, are convenient to the stressed of closure member 8.

Realizing knob 7 with respect to rifle body 4 axial restraints, generally is through realizing with rifle body 4 fixing fixtures 5.The distolateral external screw thread that is processed with is processed with internal thread in the rifle body 4 in the fixture 5, distolaterally in the fixture 5 is threaded with rifle body 4.In fixture 5, be provided with the export-oriented boss 13 of annular on the distolateral outer peripheral face, in knob 7 in distolateral being provided with to bulge loop 15, on the interior installation cavity cross section in bulge loop 15 extend into knob 7.Fixture 5 is threaded on the rifle body 4 and after putting in place, interior in the gap that bulge loop 15 forms between said export-oriented boss 13 and rifle body 4 on the knob 7.Because knob 7 needs to rotate, this gap is greater than the thickness of boss.Can be provided with the axial length of internal thread in the rifle body 4 shortlyer, thereby can reach the purpose that knob 7 freely rotates than distolateral externally threaded axial length in the screw rod 11.For ease of being assembled to fixture 5 on the rifle body 4, distolateral outside the fixture 5 is prism, and this prism is used for matching with box spanner, realizes the purpose of quick mount spare 5.

Axially be provided with through hole 6 along it in the fixture 5, screw rod 11 is threaded with this through hole 6.When knob 7 drove screw rod 11 rotations, the axial location of screw rod 11 in fixture 5 through holes 6 can obtain changing.Correspondingly, the rearward end of shank 2 also is inserted in this through hole 6 with gap in the foam gun.In this through hole 6, the rearward end of shank 2 can contact with the leading section of screw rod 11.

Rear end side at rifle body 4 is provided with cavity volume in the rigging position place of governor motion, and the front of knob 7 is provided with undergauge plush copper 14, and undergauge plush copper 14 is plugged in the cavity volume with gap, the aforesaid interior leading section that is formed on this undergauge plush copper 14 to bulge loop 15.Through the matched in clearance between cavity volume and the undergauge plush copper 14, the stability in the time of can effectively improving knob 7 rotations.

Knob 7 be shaped as truncated cone-shaped, stressed when rotating is provided with some planes or inner concave arc surface 12 on the outer peripheral face of knob 7.

Claims

1. the foam gun flow control device comprises screw rod and knob, and knob and screw rod are circumferentially fixing; Knob and rifle axon are to fixing, and turning knob can drive the screw axial motion; It is characterized in that: be provided with installation cavity in knob inside, in installation cavity, be provided with the fixture that is used for the axial restraint knob, fixture and rifle body are connected; Fixture inside axially is provided with through hole along it, and screw rod is connected with through hole whorl.

2. by the described governor motion of claim 1, it is characterized in that: said installation cavity has opening toward the outer side, is fixed with closure member at this opening part, and closure member and screw rod are circumferentially fixing, and screw rod can endwisely slip with respect to closure member.

3. by the described governor motion of claim 2, it is characterized in that: screw rod is distolateral for polyhedron towards closure member, on the inner surface of closure member, is provided with the blind hole that matches with this polyhedron.

4. by the described governor motion of claim 2, it is characterized in that: said closure member is threaded with the interior installation cavity of knob.

5. by claim 2,3 or 4 described governor motions, it is characterized in that: on the outer surface of closure member, be provided with some block convex bodys.

6. by claim 1,2,3 or 4 described governor motions, it is characterized in that: in knob in distolateral being provided with to bulge loop, said fixture is provided with export-oriented boss, export-oriented boss matches to bulge loop with interior.

7. by claim 1,2,3 or 4 described governor motions, it is characterized in that: said fixture is threaded with the rifle body, and the outer distolateral of fixture is polyhedron.

8. by claim 1,2,3 or 4 described governor motions, it is characterized in that: on the rifle body, be provided with cavity volume, the inner end of knob is provided with the undergauge plush copper, and the undergauge plush copper is plugged in the cavity volume with gap.

9. by claim 1,2,3 or 4 described governor motions, it is characterized in that: said knob is truncated cone-shaped, and the outer peripheral face of knob is provided with some planes or inner concave arc surface.