CN112902651B - PCBA board blowing cleaning device and use method thereof - Google Patents
PCBA board blowing cleaning device and use method thereof Download PDFInfo
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- CN112902651B CN112902651B CN202110360739.3A CN202110360739A CN112902651B CN 112902651 B CN112902651 B CN 112902651B CN 202110360739 A CN202110360739 A CN 202110360739A CN 112902651 B CN112902651 B CN 112902651B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
- F26B23/06—Heating arrangements using electric heating resistance heating
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Abstract
The utility model belongs to the technical field of the clean technique of PCBA board and specifically relates to a PCBA board cleaning device that blows is related to, including the air compressor machine, connect in gas holder, the air gun body of air compressor machine, connect the connecting pipe between gas holder and air gun body, set up in the rifle mouth of air gun body and set up in the stand pipe of rifle mouth, the stand pipe includes straight tube and arc, the straight tube is connected in the rifle mouth, and the external diameter of arc reduces gradually towards keeping away from straight tube one end by being close to straight tube one end, and the tip external diameter that the straight tube was kept away from to the arc is less than the external diameter of rifle mouth. This application has the effect that improves the drop of water clearance efficiency to remaining in PCBA board surface.
Description
Technical Field
The application relates to the technical field of PCBA board cleaning, in particular to a PCBA board blowing cleaning device and a using method thereof.
Background
Pcb (printed Circuit board), which is called printed Circuit board in chinese, is an important electronic component, is a support for electronic components, and is a carrier for electrical interconnection of electronic components. It is called a "printed" circuit board because it is made using electronic printing.
The PCB is subjected to SMT (surface Mounted technology) and Chinese name surface mounting, and then subjected to THT (through Hole technology) and Chinese name through Hole technology to complete the assembly of the whole electronic component, wherein the state at this moment is PCBA (printed Circuit Board Assembly) and Chinese name finished product printed Circuit Board.
In PCB assembling process, melt by soldering tin and take place the physical and chemical reaction with the scaling powder, can cause the surface of PCBA board, produce in the clearance between components and parts and the circuit board that a large amount of scaling powder remain (cause the influence to PCBA long-term reliability of using), be difficult to clear up, consequently need wash PCBA board surface, the PCBA board washs the back of accomplishing, PCBA board surface and all can leave over the drop of water with components and parts laminating position, adopt the air gun to blow off the clearance to PCBA board surface remaining drop of water under the normal conditions. With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the air gun cleared up the drop, because the space is less between components and parts and the circuit board, the pipe diameter of the air gun muzzle among the correlation technique is great, can't go deep into to between components and parts and the circuit board, and the distance that leads to between air gun muzzle and the circuit board is great, and the air current that blows off is comparatively dispersed, and then leads to the drop clearance efficiency lower.
Disclosure of Invention
On the one hand, in order to improve the drop of water cleaning efficiency to remaining on PCBA board surface, this application provides a PCBA board cleaning device that blows.
The application provides a PCBA board cleaning device that blows adopts following technical scheme:
the utility model provides a PCBA board cleaning device that blows, includes the air compressor machine, connects in gas holder, the air gun body of air compressor machine, connects connecting pipe between gas holder and air gun body, sets up in the rifle mouth of air gun body and sets up in the stand pipe of rifle mouth, the stand pipe includes straight tube and arc, the straight tube is connected in the rifle mouth, and the external diameter of arc reduces towards keeping away from straight tube one end by being close to straight tube one end, and the tip external diameter that the straight tube was kept away from to the arc is less than the external diameter of rifle mouth.
By adopting the technical scheme, the guide pipe is arranged, on one hand, the outer diameter of the guide pipe far away from the gun nozzle is smaller than that of the gun nozzle, so that one end of the guide pipe far away from the gun nozzle can be conveniently stretched into a gap between a component and a circuit board, the distance between the gun nozzle and the circuit board is reduced, and the water droplet cleaning effect is improved; on the other hand, the one end that the rifle mouth was kept away from to the stand pipe is the arc tube setting, and when the surface of circuit board placed up, the handheld air gun of operator, the rifle mouth axis of air gun is the level setting, and the arc tube end blowout of spun air current through the stand pipe to change the flow direction of gas and blow off the drop of water on circuit board surface, operator's arm is the horizontality this moment, effectively reduces the burden of arm and wrist, thereby reduces operator's intensity of labour.
Preferably, the outer wall of the end part of the gun nozzle is provided with an external thread, and the inner wall of the end part of the straight pipe close to the gun nozzle is provided with an internal thread in threaded connection with the external thread.
Through adopting above-mentioned technical scheme, set up external screw thread and internal thread, realize dismantling of straight tube and rifle mouth and be connected, be convenient for change the stand pipe of damage.
Preferably, the joint of the straight pipe and the gun nozzle is in sealing connection through a raw material belt.
Through adopting above-mentioned technical scheme, set up the unsintered tape and seal the junction of straight tube and rifle mouth, guarantee the gas tightness, reduce the possibility that gas spills from the junction of straight tube and rifle mouth, guarantee the output pressure of arc pipe end portion.
Preferably, the straight tube is close to the one end outer wall bulge loop of rifle mouth and is equipped with first spacing ring, the rifle mouth articulates there is the gag lever post, and the gag lever post is provided with many and distributes around the axis of rifle mouth, the free end of gag lever post is provided with the fixture block that the rifle mouth one end was kept away from in first spacing ring to the activity butt, the inner wall ring of straight tube is equipped with the second spacing ring that supplies the tip butt of rifle mouth, the rifle mouth is provided with the control assembly that the free end of many gag lever posts of drive rotated in step in order to realize opening and shutting.
Through adopting above-mentioned technical scheme, when installing the stand pipe on the rifle mouth, the free end through many gag lever posts of drive through control assembly rotates around its pin joint outside towards the rifle mouth earlier, thereby provide installation space for the straight tube, locate the tip of rifle mouth with straight tube tip cover, when the tip butt of rifle mouth in the second spacing ring terminal surface, the free end through many gag lever posts of control assembly drive rotates around its pin joint towards being close to rifle mouth direction, make the terminal surface that the rifle mouth was kept away from to the fixture block joint on the free end of gag lever post in first spacing ring, the reverse slip of restriction straight tube, thereby reduce the possibility that the stand pipe slided and breaks away from out rifle mouth tip.
Preferably, the control assembly comprises a sliding sleeve, a fixed sleeve, an elastic piece and a limiting rod, wherein the sliding sleeve is connected with the gun nozzle in a sliding mode along the axial direction of the gun nozzle, the fixed sleeve is arranged on the gun nozzle and is located between the guide pipe and the sliding sleeve, one end of the elastic piece is hinged to the sliding sleeve, the other end of the elastic piece is hinged to the driving rod of the limiting rod, the elastic piece is fixedly connected between the fixed sleeve and the sliding sleeve so as to force the sliding sleeve to slide towards the direction close to the fixed sleeve, and the limiting rod is hinged to the outer wall of the fixed sleeve.
By adopting the technical scheme, an operator applies acting force to the sliding sleeve to enable the sliding sleeve to slide towards the direction far away from the fixed sleeve, at the moment, the elastic part generates elastic deformation and has elastic potential energy, the sliding sleeve drives the free end of the limiting rod to rotate towards the outer side of the gun nozzle through the driving rod, so that an installation space is provided for the straight pipe, after the straight pipe is sleeved on the end part of the gun nozzle, the acting force applied to the sliding sleeve is removed, the elastic part resets to drive the sliding sleeve to slide towards the direction close to the fixed sleeve, so that the free end of the limiting rod is pushed to rotate towards the direction close to the gun nozzle around the hinge point, a clamping block on the free end of the limiting rod is enabled to be abutted against the end face, far away from the gun nozzle, of the first limiting ring, the reverse sliding of the straight pipe is limited, and the installation efficiency is effectively improved; in addition, but realize straight tube and rifle mouth relative rotation, when the face of PCBA board was located the top of air gun, the rotatable straight tube of operator adjusted the tip orientation of arc pipe, need not to rotate operator's wrist and can clear away the drop of water of its face, effectively reduced the burden of arm and wrist to reduce operator's intensity of labour.
Preferably, the tip outer wall ring of rifle mouth is equipped with first seal groove, the straight tube is close to the tip inner wall ring of rifle mouth and is equipped with the second seal groove, first seal groove is fixed with the sealing washer that the card inlays in the second seal groove, and the sealing washer has elasticity.
Through adopting above-mentioned technical scheme, locate the in-process of rifle mouth with the straight tube cover, when the tip butt of rifle mouth in the second spacing ring, first seal groove and second seal groove position are corresponding to make the sealing washer part inlay card that is fixed in first seal groove in the second seal groove, guarantee the gas tightness of straight tube and rifle mouth junction, reduce the possibility that gas spills from the junction of straight tube and rifle mouth, guarantee the output pressure of arc pipe end portion.
Preferably, the connecting pipe is including connecting in the first gas-supply pipe of gas holder, connecting in the second gas-supply pipe of air gun body and connecting in order to carry out the heating pipe that heats gas between first gas-supply pipe and the second gas-supply pipe, and the heating pipe is provided with carries out the heating with gas heating spare, and the heating spare includes the electric heating wire of fixed connection in the heating pipe inner wall.
Through adopting above-mentioned technical scheme, through setting up first gas-supply pipe, second gas-supply pipe and heating pipe are connected and are formed the air supply line between air gun and gas holder, be provided with the electrical heating silk in the heating pipe and heat the gas of carrying to the second gas-supply pipe, thereby make from the blowout of air gun rifle mouth for the higher hot gas of temperature, after will attaching to the drop of water on circuit board surface through the air gun and blow off, directly dry the circuit board surface, need not to carry out the stoving operation through the drying-machine again, improve production economic benefits.
Preferably, the electric heating wire is spirally fixed and wound on the inner wall of the heating pipe.
Through adopting above-mentioned technical scheme, electric heating wire is the heliciform and distributes, heats gas comprehensively, improves rate of heating.
Preferably, the one end of heating pipe is located to the end cover of first gas-supply pipe, and the other end of heating pipe is located to the end cover of second gas-supply pipe, the end outer wall that the heating pipe is close to first gas-supply pipe and the end outer wall that the heating pipe is close to first gas-supply pipe all encircle and are equipped with spacing ring protruding, spacing ring protruding is elastic setting, the end inner wall of first gas-supply pipe and the end inner wall of second gas-supply pipe all encircle and are equipped with the spacing annular that supplies the protruding inlay card of spacing ring, and the protruding terminal surface diameter that is close to the heating pipe of spacing ring is less than the terminal surface diameter of keeping away from the heating pipe, between heating pipe and the first gas-supply pipe, all through staple bolt fixed connection between heating pipe and the second gas-supply pipe.
By adopting the technical scheme, after the gas pipe is sleeved on the heating pipe, the limiting ring is convexly clamped and embedded in the limiting ring groove on the inner wall of the gas pipe, so that on one hand, the air tightness between the heating pipe and the gas pipe is improved, and the possibility of air leakage at the joint of the heating pipe and the gas pipe is reduced, on the other hand, the possibility of reverse sliding of the gas pipe and the heating pipe is effectively reduced, and the connection stability of the gas pipe and the heating pipe is improved; the protruding terminal surface diameter that is close to the heating pipe of spacing ring is less than the terminal surface diameter of keeping away from the heating pipe, make the protruding outer wall of spacing ring form the direction inclined plane, it is more convenient to make the in-process of locating the heating pipe at the gas-supply pipe cover, the in-process of locating the heating pipe at the gas-supply pipe cover simultaneously, make the protruding terminal surface of keeping away from the heating pipe of spacing ring take place deformation, when the protruding and spacing ring groove position of spacing ring corresponds, the protruding elasticity of spacing ring resets the card and inlays in spacing ring groove, the junction to gas-supply pipe and heating pipe is further fixed through the staple bolt at last.
On the other hand, another purpose of this application is to provide a PCBA board cleaning device's application method that blows.
A use method of a PCBA board blowing cleaning device comprises the following steps:
and step S01, correspondingly installing a first air pipe and a second air pipe at two ends of the heating pipe respectively, installing the guide pipe at the end part of the gun nozzle, and supplying air to the air gun body by the air in the air compressor air storage tank through the first air pipe, the heating pipe and the second air pipe.
Step S02, the one end that the gun nozzle was kept away from with the stand pipe to the handheld air gun body of operator stretches into the clearance between components and parts and the circuit board and blows off remaining in the drop on PCBA board surface, gaseous loop through the gas storage pipe, first gas-supply pipe, the heating pipe, the second gas-supply pipe, thereby the stand pipe blowout of gun nozzle, the electric heating wire in the heating pipe heats the gas of carrying to the second gas-supply pipe, thereby make and spout from the stand pipe and be the higher hot gas of temperature, after will attaching to the drop on circuit board surface and blow off through the air gun, directly dry the circuit board surface.
Through adopting above-mentioned technical scheme, through setting up first gas-supply pipe, second gas-supply pipe and heating pipe are connected and are formed the air supply line between air gun and gas holder, it heats to carry the gas to the second gas-supply pipe to be provided with the electrical heating silk in the heating pipe, thereby make from the blowout of air gun rifle mouth for the higher hot gas of temperature, after will attaching to the drop of water on circuit board surface through the air gun and blow off, directly dry to the circuit board surface, need not to carry out the stoving operation through the drying-machine again, improve clearance drying efficiency and improve production economic benefits.
In summary, the present application includes at least one of the following beneficial technical effects:
the guide pipe is arranged, on one hand, the outer diameter of the guide pipe, which is far away from the gun nozzle, is smaller than the outer diameter of the gun nozzle, so that one end of the guide pipe, which is far away from the gun nozzle, can be conveniently stretched into a gap between a component and a circuit board, and the distance between the gun nozzle and the circuit board is reduced, and the effect of cleaning water drops is improved;
the end, far away from the gun nozzle, of the guide pipe is arranged in an arc-shaped pipe, when the surface of the circuit board is placed upwards, an operator holds the air gun, the axis of the gun nozzle of the air gun is horizontally arranged, and the sprayed air flow is sprayed out through the arc-shaped pipe end of the guide pipe, so that the flow direction of the air is changed to blow off water drops on the surface of the circuit board, and the arm of the operator is in a horizontal state, the burden of the arm and the wrist is effectively reduced, and the labor intensity of the operator is reduced;
through setting up first gas-supply pipe, second gas-supply pipe and heating pipe connection form the air feed line between air gun and gas holder, be provided with the electrical heating silk in the heating pipe and heat the gas of carrying to the second gas-supply pipe to make from the blowout of air gun rifle mouth for the higher hot gas of temperature, after will attaching to the drop of water on circuit board surface through the air gun blows off, directly dry circuit board surface, need not to carry out the drying operation through the drying-machine again, improve production economic benefits.
Drawings
FIG. 1 is a schematic view showing the overall structure of a PCBA board air blowing cleaning device in embodiment 1.
Fig. 2 is a schematic view of the internal structure of the heating pipe in embodiment 1.
Fig. 3 is an enlarged partial schematic view at a of fig. 2.
Fig. 4 is a schematic structural view of the anchor ear in embodiment 1.
Fig. 5 is a schematic view of the structure of the guide tube and the muzzle in embodiment 1.
FIG. 6 is a schematic view showing a connection structure of a straight pipe and a gun nozzle in example 1.
FIG. 7 is a schematic view showing the structure of the guide tube in the embodiment 1, which is a double-channel tube.
FIG. 8 is a schematic view showing the structure of a guide tube and a muzzle in embodiment 2.
FIG. 9 is a schematic view showing the internal structure of a straight pipe in example 2.
Fig. 10 is a partially enlarged schematic view at B of fig. 9.
Description of reference numerals: 1. an air compressor; 2. a gas storage tank; 3. an air gun body; 4. a gun nozzle; 41. an external thread; 42. a raw material belt; 43. a limiting rod; 44. a clamping block; 45. a first seal groove; 46. a seal ring; 5. a guide tube; 51. a straight pipe; 511. a first limit ring; 512. a second stop collar; 513. a second seal groove; 52. an arc tube; 53. an internal thread; 54. a first air passage; 55. a second air passage; 6. a connecting pipe; 61. a first gas delivery pipe; 62. a second gas delivery pipe; 63. heating a tube; 64. an electric heating wire; 65. a heat insulating sleeve; 66. a limiting ring groove; 67. the limiting ring is convex; 7. hooping; 71. an arc-shaped splint; 72. mounting a plate; 73. locking the bolt; 74. locking the nut; 8. a control component; 81. fixing a sleeve; 82. a sliding sleeve; 83. a drive rod; 84. an extension spring; 85. and a force application plate.
Detailed Description
The present application is described in further detail below with reference to figures 1-10.
The embodiment of the application discloses PCBA board cleaning device that blows.
Example 1:
referring to fig. 1, a PCBA board cleaning device that blows includes air compressor machine 1, connects in air compressor machine 1 in order to carry out gas storage tank 2, air gun body 3 that stores, connects in connecting pipe 6 between air storage tank 2 and air gun body 3, sets up in the rifle mouth 4 of air gun body 3 and sets up in the stand pipe 5 of rifle mouth 4.
Referring to fig. 1 and 2, the connection pipe 6 includes a first gas pipe 61 with one end connected to the gas storage tank 2, a second gas pipe 62 with one end connected to the air gun body 3, and a heating pipe 63 connected between the first gas pipe 61 and the second gas pipe 62 to heat the gas, wherein the first gas pipe 61 and the second gas pipe 62 are hoses, and the heating pipe 63 is a hard pipe. The heating pipe 63 is provided with a heating element for heating gas, the heating element comprises an electric heating wire 64 fixedly connected to the inner wall of the heating pipe 63, and the electric heating wire 64 is spirally fixed and wound on the inner wall of the heating pipe 63. The heating pipe 63 is coaxially fixed with the sleeve 81 and is provided with the heat insulation sleeve 65, the outer diameter of the heat insulation sleeve 65 is equal to that of the first air conveying pipe 61 and the second air conveying pipe 62, and therefore the possibility that workers touch the heating pipe 63 to be scalded is effectively reduced.
Referring to fig. 2 and 3, an end of the first air pipe 61 is sleeved on one end of the heating pipe 63, and an end of the second air pipe 62 is sleeved on the other end of the heating pipe 63. The heating pipe 63 is close to the tip outer wall of first gas-supply pipe 61 and the tip outer wall that the heating pipe 63 is close to first gas-supply pipe 61 all encircles and is equipped with spacing ring protruding 67, and spacing ring protruding 67 is the elasticity setting, and the tip inner wall of first gas-supply pipe 61 and the tip inner wall of second gas-supply pipe 62 all encircle and are equipped with the spacing ring groove 66 that supplies the protruding 67 inlay card of spacing ring. The end face diameter that the protruding 67 of spacing ring is close to heating pipe 63 is less than the end face diameter who keeps away from heating pipe 63, and the cross section of the protruding 67 of spacing ring can be right trapezoid, can be right triangle, and in this embodiment, the cross section of the protruding 67 of spacing ring is right triangle, and the protruding 67 one end and the heating pipe 63 outer wall smooth connection of keeping away from heating pipe 63 of spacing ring.
Referring to fig. 1 and 4, the heating pipe 63 and the first air pipe 61, and the heating pipe 63 and the second air pipe 62 are fixedly connected through an anchor ear 7. Staple bolt 7 includes that two are the symmetry and set up arc splint 71, and the articulated setting in other end of arc splint 71, and the free end protrusion of arc splint 71 is provided with mounting panel 72, and wherein mounting panel 72 is worn to be equipped with locking bolt 73, and locking bolt 73's tip threaded connection has the lock nut 74 of butt in another mounting panel 72, advances one and improves the connection structure reliability of heating pipe 63 and gas-supply pipe. After the first air pipe 61 and the second air pipe 62 are installed, the end surface of the first air pipe 61 and the end surface of the second air pipe 62 are respectively abutted against the two ends of the heat insulating sleeve 65 correspondingly.
Referring to fig. 5 and 6, the guide tube 5 includes a straight tube 51 and an arc tube 52, the straight tube 51 is connected to the end of the gun nozzle 4 away from the air gun body 3, the outer diameter of the arc tube 52 is gradually reduced from the end close to the straight tube 51 to the end away from the straight tube 51, and the outer diameter of the end of the arc tube 52 away from the straight tube 51 is smaller than the outer diameter of the gun nozzle 4. The outer wall of the end part of the gun nozzle 4 is provided with an external thread 41, the inner wall of the end part of the straight pipe 51 close to the gun nozzle 4 is provided with an internal thread 53 in threaded connection with the external thread 41, and the joint of the straight pipe 51 and the gun nozzle 4 is hermetically connected through a raw material belt 42.
Referring to fig. 7, the guide tube 5 may be a single-channel tube or a double-channel tube, and when the guide tube 5 is a single-channel tube, the cross section of the guide tube 5 is circular. When the guide tube 5 is a double-channel tube, the cross section of the guide tube 5 is oval, and the long axis of the end part of the guide tube 5 far away from the gun nozzle 4 is smaller than the diameter of the gun nozzle 4. The stand pipe 5 is provided with the first air flue 54 that communicates in the inner chamber of rifle mouth 4 and communicates in the second air flue 55 of the inner chamber of rifle mouth 4, and the gas dispersion of rifle mouth 4 becomes two parts and spouts through the stand pipe 5 to can clear up the drop of water on circuit board and the components and parts simultaneously, perhaps clear up the drop of water of different regions on the circuit board simultaneously, thereby improve cleaning efficiency.
The implementation principle of the embodiment 1 is as follows: the gun nozzle 4 is provided with the guide pipe 5, on one hand, the outer diameter of the guide pipe 5 far away from the gun nozzle 4 is smaller than that of the gun nozzle 4, so that one end of the guide pipe 5 far away from the gun nozzle 4 can be conveniently stretched into a gap between a component and a circuit board, the distance between the gun nozzle 4 and the circuit board is reduced, and the bead cleaning effect is improved; through setting up first gas-supply pipe 61, second gas-supply pipe 62 and heating pipe 63 are connected and are formed the air supply line between air gun and gas holder 2, be provided with electric heating wire 64 in the heating pipe 63 and heat the gas of carrying to second gas-supply pipe 62, thereby make from 5 blowout of stand pipe for the higher hot gas of temperature, after will attaching to the drop of water on circuit board surface through the air gun and blow off, directly dry the circuit board surface, need not to carry out the stoving operation through the drying-machine again, improve production economic benefits.
Example 2:
referring to fig. 8, the difference between this embodiment and embodiment 1 is that a first limiting ring 511 is annularly protruded from the outer wall of one end of the straight tube 51 close to the gun nozzle 4, and a second limiting ring 512 is annularly arranged on the inner wall of the straight tube 51 for abutting the end of the gun nozzle 4. The periphery wall of rifle mouth 4 articulates there is gag lever post 43, and gag lever post 43 is provided with many and distributes around the axis of rifle mouth 4, and in this embodiment, gag lever post 43 is provided with three, and the free end of every gag lever post 43 is provided with the movable butt and keeps away from the fixture block 44 of the terminal surface of rifle mouth 4 in first spacing ring 511, and rifle mouth 4 is provided with the control assembly 8 that the free end synchronous rotation of many gag lever posts 43 of drive was in order to realize opening and shutting.
Referring to fig. 8 and 9, the control assembly 8 includes a sliding sleeve 82 coaxially slidably connected to the gun nozzle 4 along the axial direction of the gun nozzle 4, a fixing sleeve 81 coaxially slidably connected to the gun nozzle 4 and located between the guide tube 5 and the sliding sleeve 82, a driving rod 83 having one end hinged to the sliding sleeve 82 and the other end hinged to the limiting rod 43, and an elastic member fixedly connected between the fixing sleeve 81 and the sliding sleeve 82 to force the sliding sleeve 82 to slide toward the direction close to the fixing sleeve 81. The limiting rod 43 is hinged to the outer wall of the fixed sleeve 81, and a pair of symmetrically arranged force applying plates 85 is convexly arranged on the outer side of the sliding sleeve 82. The elastic element is an extension spring 84 coaxially sleeved on the gun nozzle 4, one end of the extension spring 84 is fixedly connected to the end surface of the fixed sleeve 81, and the other end of the extension spring 84 is fixedly connected to the end surface of the sliding sleeve 82.
Referring to fig. 9 and 10, a first sealing groove 45 is annularly formed on an outer wall of an end portion of the nozzle 4, a second sealing groove 513 is annularly formed on an inner wall of an end portion of the straight pipe 51 close to the nozzle 4, a sealing ring 46 which is clamped and embedded in the second sealing groove 513 is fixed to the first sealing groove 45, and the sealing ring 46 has elasticity. The in-process of rifle mouth 4 is located to straight tube 51 cover, and when the tip butt of rifle mouth 4 in second spacing ring 512, first seal groove 45 and second seal groove 513 position are corresponding, and sealing washer 46 inlay card guarantees the gas tightness of straight tube 51 and rifle mouth 4 junction in second seal groove 513, reduces the possibility that gas spills from the junction of straight tube 51 and rifle mouth 4, guarantees the delivery pressure of arc pipe 52 tip.
The implementation principle of the embodiment 2 is as follows: when the guide tube 5 is installed on the gun nozzle 4, an operator applies acting force to the sliding sleeve 82 through the force application plate 85 to enable the sliding sleeve 82 to slide towards the direction far away from the fixed sleeve 81, at the moment, the extension spring 84 is stretched to generate elastic deformation and has elastic potential energy, the sliding sleeve 82 drives the free end of the limiting rod 43 to rotate towards the outer side of the gun nozzle 4 around the hinged point of the free end through the driving rod 83, so that an installation space is provided for the straight tube 51, after the straight tube 51 is sleeved on the end part of the gun nozzle 4, the acting force applied to the sliding sleeve 82 is removed, the extension spring 84 resets to drive the sliding sleeve 82 to slide towards the direction close to the fixed sleeve 81, the free end of the limiting rod 43 is pushed to rotate towards the direction close to the gun nozzle 4 around the hinged point, the clamping block 44 on the free end of the limiting rod 43 is abutted to the end face, far away from the gun nozzle 4, the reverse sliding of the straight tube 51 is limited, and the installation efficiency is effectively improved; in addition, realize that straight tube 51 and rifle mouth 4 can rotate relatively, when the face of PCBA board was located the top of air gun, the operator can rotate straight tube 51, adjusts the tip orientation of arc 52, need not to rotate operator's wrist and can clear away the drop of water of its face, effectively reduces the burden of arm and wrist to reduce operator's intensity of labour.
The embodiment of the application also discloses a use method of the PCBA board blowing cleaning device, which comprises the following steps:
step S01, correspondingly installing a first air pipe 61 and a second air pipe 62 at two ends of the heating pipe 63 respectively, installing the guide pipe 5 at the end part of the gun nozzle 4, and supplying air to the air gun body 3 by the air in the air storage tank 2 of the air compressor 1 through the first air pipe 61, the heating pipe 63 and the second air pipe 62.
Step S02, the one end that the pistol mouth 4 was kept away from to the guide tube 5 of handheld air gun body 3 of operator stretches into the clearance between components and parts and the circuit board and blows off the drop of water that remains in PCBA board surface, gaseous loop through the gas storage pipe, first gas-supply pipe 61, heating pipe 63, second gas-supply pipe 62, thereby the guide tube 5 blowout of pistol mouth 4, it heats the gas of carrying to second gas-supply pipe 62 to be provided with electric heating wire 64 in the heating pipe 63, thereby make and spout from guide tube 5 for the higher hot gas of temperature, after blowing off the drop of water that adheres to the circuit board surface through the air gun, directly dry the circuit board surface, need not to carry out the stoving operation through the drying-machine again, improve production economic benefits.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. The utility model provides a PCBA board cleaning device that blows which characterized in that: the air gun comprises an air compressor (1), an air storage tank (2) connected to the air compressor (1), an air gun body (3), a connecting pipe (6) connected between the air storage tank (2) and the air gun body (3), a gun nozzle (4) arranged on the air gun body (3) and a guide pipe (5) arranged on the gun nozzle (4), wherein the guide pipe (5) comprises a straight pipe (51) and an arc-shaped pipe (52), the straight pipe (51) is connected to the gun nozzle (4), the outer diameter of the arc-shaped pipe (52) is gradually reduced from one end close to the straight pipe (51) to one end far away from the straight pipe (51), and the outer diameter of the end, far away from the straight pipe (51), of the arc-shaped pipe (52) is smaller than that of the gun nozzle (4); the outer wall of one end, close to the gun nozzle (4), of the straight pipe (51) is provided with a first limiting ring (511) in a protruding mode, the gun nozzle (4) is hinged with a limiting rod (43), the limiting rod (43) is provided with a plurality of limiting rods which are distributed around the axis of the gun nozzle (4), a clamping block (44) which is movably abutted to one end, far away from the gun nozzle (4), of the first limiting ring (511) is arranged at the free end of the limiting rod (43), a second limiting ring (512) for abutting the end portion of the gun nozzle (4) is arranged on the inner wall of the straight pipe (51) in a surrounding mode, and the gun nozzle (4) is provided with a control assembly (8) for driving the free ends of the limiting rods (43) to synchronously rotate to achieve opening and closing; the control assembly (8) comprises a sliding sleeve (82) which is connected to the gun nozzle (4) in a sliding mode along the axial direction of the gun nozzle (4), a fixing sleeve (81) which is arranged on the gun nozzle (4) and is positioned between the guide pipe (5) and the sliding sleeve (82), a driving rod (83) of which one end is hinged to the sliding sleeve (82) and the other end is hinged to the limiting rod (43), and an elastic part which is fixedly connected between the fixing sleeve (81) and the sliding sleeve (82) to force the sliding sleeve (82) to slide towards the direction close to the fixing sleeve (81), wherein the limiting rod (43) is hinged to the outer wall of the fixing sleeve (81), a pair of symmetrically-arranged force applying plates (85) is convexly arranged on the outer side of the sliding sleeve (82), and a second limiting ring (512) for abutting against the end of the gun nozzle (4) is annularly arranged on the inner wall of the straight pipe (51); the tip outer wall ring of rifle mouth (4) is equipped with first seal groove (45), the tip inner wall ring that straight tube (51) are close to rifle mouth (4) is equipped with second seal groove (513), first seal groove (45) are fixed with seal ring (46) of inlay card in second seal groove (513), and seal ring (46) have elasticity.
2. A PCBA board blow cleaning apparatus as claimed in claim 1, in which: the outer wall of the end part of the gun nozzle (4) is provided with an external thread (41), and the inner wall of the end part of the straight pipe (51) close to the gun nozzle (4) is provided with an internal thread (53) in threaded connection with the external thread (41).
3. A PCBA board blow cleaning apparatus as claimed in claim 2, in which: the joint of the straight pipe (51) and the gun nozzle (4) is hermetically connected through a raw material belt (42).
4. A PCBA board blow cleaning apparatus as claimed in claim 1, in which: connecting pipe (6) are including connecting in first gas-supply pipe (61) of gas holder (2), connecting in second gas-supply pipe (62) of air gun body (3) and connecting in order to carry out heating pipe (63) that heat to gas between first gas-supply pipe (61) and second gas-supply pipe (62), and heating pipe (63) are provided with and carry out the heating member that heats to gas, and the heating member includes electric heating wire (64) of fixed connection in heating pipe (63) inner wall.
5. A PCBA board blowing cleaning device as claimed in claim 4, wherein: the electric heating wire (64) is spirally fixed and wound on the inner wall of the heating pipe (63).
6. A PCBA board blowing cleaning device as claimed in claim 4, wherein: the end part of the first air delivery pipe (61) is sleeved at one end of the heating pipe (63), the end part of the second air delivery pipe (62) is sleeved at the other end of the heating pipe (63), the outer wall of the end part of the heating pipe (63) close to the first air conveying pipe (61) and the outer wall of the end part of the heating pipe (63) close to the first air conveying pipe (61) are both annularly provided with a limiting ring bulge (67), protruding (67) of spacing ring sets up for elasticity, the tip inner wall of first gas-supply pipe (61) and the tip inner wall of second gas-supply pipe (62) all encircle and are equipped with spacing annular (66) that supply protruding (67) inlay card of spacing ring, and the terminal surface diameter that protruding (67) of spacing ring is close to heating pipe (63) is less than the terminal surface diameter of keeping away from heating pipe (63), between heating pipe (63) and first gas-supply pipe (61), all through staple bolt (7) fixed connection between heating pipe (63) and second gas-supply pipe (62).
7. A use method of a PCBA board blowing cleaning device is characterized in that: the method comprises the following steps:
step S01, correspondingly installing a first air pipe (61) and a second air pipe (62) at two ends of a heating pipe (63) respectively, installing a guide pipe (5) at the end part of a gun nozzle (4), and supplying air to an air gun body (3) by the air in an air storage tank (2) of an air compressor (1) through the first air pipe (61), the heating pipe (63) and the second air pipe (62);
step S02, the one end that rifle mouth (4) was kept away from in the handheld air gun body of operator (3) with stand pipe (5) stretches into the clearance between components and parts and the circuit board and blows off remaining in the drop on PCBA board surface, gaseous loop through the gas storage pipe, first gas-supply pipe (61), heating pipe (63), second gas-supply pipe (62), thereby stand pipe (5) blowout of rifle mouth (4), electric heating wire (64) in heating pipe (63) heats the gas of carrying to second gas-supply pipe (62), thereby make from stand pipe (5) blowout be the higher hot gas of temperature, after will attaching to the drop on circuit board surface through the air gun blows off, directly dry the circuit board surface.
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| CN202110360739.3A CN112902651B (en) | 2021-04-02 | 2021-04-02 | PCBA board blowing cleaning device and use method thereof |
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| CN202110360739.3A CN112902651B (en) | 2021-04-02 | 2021-04-02 | PCBA board blowing cleaning device and use method thereof |
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