CN112331590A

CN112331590A - Packaging mechanism and packaging method of circuit board

Info

Publication number: CN112331590A
Application number: CN202011198429.8A
Authority: CN
Inventors: 简思涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2021-02-05

Abstract

The invention discloses a packaging mechanism and a packaging method of a circuit board, which comprises a supporting frame, a sealing unit, a packaging adhesive extruding unit, a transverse moving unit, a gluing unit, a circuit board tray, a tray fixing and residual adhesive collecting unit and a longitudinal slide rail movable power unit, wherein the supporting frame is provided with a plurality of supporting rods; the supporting frame comprises a top plate, pillars and a bottom plate, four corners of the bottom of the top plate are connected with four corners of the top of the bottom plate through the four pillars, the sealing units are arranged on the periphery of the supporting frame to enable the interior of the supporting frame to form a closed space, the transverse moving unit is transversely arranged in the middle of the bottom of the top plate, and the gluing unit is arranged at the bottom of the transverse moving unit; can deal with the circuit board of the not-line model, fix the circuit board tray of unidimensional not to can prevent that the glue spreader from spilling unnecessary glue in a confused state of mind, collect unnecessary glue solution outside the circuit board size, avoid extravagant, reduce the clearance step, improve the availability factor.

Description

Packaging mechanism and packaging method of circuit board

Technical Field

The invention relates to the technical field of circuit board packaging, in particular to a packaging mechanism and a packaging method of a circuit board.

Background

The circuit board can be called a printed circuit board or a printed circuit board, and the packaging refers to that circuit pins on a silicon chip are connected to external joints by leads so as to facilitate the connection of other devices. The package form refers to a housing for mounting a semiconductor integrated circuit chip. The chip is not only used for mounting, fixing, sealing, protecting the chip and enhancing the electric heating performance, but also connected to pins of the packaging shell through the connection points on the chip by leads, and the pins are connected with other devices through the leads on the printed circuit board, thereby realizing the connection of the internal chip and an external circuit. In the rubber coating process before the encapsulation, because the circuit board size is changeable, consequently need deal with the model of changeable circuit board in rubber coating mechanism, consequently cause the waste of resource to the glue spreader size of rubber coating in-process differs, also can cause the circuit board to have unnecessary encapsulation glue solution outward, causes the waste, and needs the clearance, and it is inconvenient to use.

Disclosure of Invention

The invention aims to overcome the existing defects and provides a packaging mechanism and a packaging method of a circuit board, which can be used for circuit boards of different models, fix circuit board trays of different sizes, prevent redundant glue from being scattered by a glue spreader and collect redundant glue outside the size of the circuit board, avoid waste, reduce cleaning steps, improve the use efficiency and effectively solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a packaging mechanism of a circuit board comprises a supporting frame, a sealing unit, a packaging glue extruding unit, a transverse moving unit, a gluing unit, a circuit board tray, a tray fixing and residual glue collecting unit and a longitudinal slide rail movable power unit;

the supporting frame comprises a top plate, pillars and a bottom plate, the four corners of the bottom of the top plate are connected with the four corners of the top of the bottom plate through the four pillars, the sealing units are arranged on the periphery of the supporting frame to enable the interior of the supporting frame to form a closed space, the transverse moving unit is transversely arranged in the middle of the bottom of the top plate, the gluing unit is arranged at the bottom of the transverse moving unit, the packaging glue extruding unit is arranged on the top plate and is in matched connection with the gluing unit, the longitudinal sliding rail movable power unit is arranged on the rear side of the surface of the bottom plate, the front side of the longitudinal sliding rail movable power unit is provided with a tray fixing and residual glue collecting unit, and a circuit board tray is arranged;

the transverse moving unit comprises a transverse rod, a limiting end block, a rack, a gear shaft, a transverse moving motor, longitudinal connecting rods, sliding grooves, pulleys and pulley shafts, the transverse rod is fixed in the middle of the bottom of the top plate, the two ends of the transverse rod are respectively connected with the limiting end blocks in a clamping mode, the front side and the rear side of the transverse rod are respectively provided with the sliding grooves, the rack is arranged in one sliding groove, the two ends of each longitudinal connecting rod are respectively connected with the gear shaft and the pulley shaft in a rotating mode, the gear shaft is fixedly connected with the gear, the gear is meshed with the rack, the pulley shaft is fixedly connected with the pulley, the pulley is connected with the other sliding groove in a rolling mode, the bottom end of the gear.

The inner side of the supporting frame is sealed by the sealing unit, the inner part is conveniently pumped into a negative pressure state, glue solution is favorably and tightly attached to a circuit board to be packaged, the packaging glue extrusion unit can extrude the packaging glue to the gluing unit, the gluing unit can glue the circuit board, the circuit board tray can be adjusted according to the size of the circuit board, even if the size of the circuit board tray is changed, components for fixing the tray and fixing the circuit board tray in the residual glue collecting unit are only required to be changed by the movable power unit of the longitudinal slide rail, the device is suitable for gluing the circuit boards with different sizes, in the transverse moving unit, the transverse moving motor can drive the gear to rotate through the gear shaft, the transmission function of the gear and the rack can enable the pulley to roll in the chute, the longitudinal connecting rod can horizontally move along the transverse rod left and right, thereby driving the gluing unit at the bottom, and gluing and packaging the circuit board.

Further, the gluing unit comprises a connecting rod, a limiting ring, a vertical rod, an inverted U-shaped frame, a gluing sponge strip, a shaft seat, an end shaft, a gluing sleeve, a roller shaft, a glue cavity, a telescopic glue passing pipe, a spring, an anti-slip strip and a gluing motor, wherein the top of the vertical rod is fixed in the middle of the bottom of the longitudinal connecting rod, the bottom end of the vertical rod is connected with the inverted U-shaped frame, the shaft seats are fixed at two ends of the inverted U-shaped frame, the gluing sleeve is sleeved on the peripheral surface of the roller shaft, the anti-slip strip is arranged in the gluing sleeve in a laterally protruding mode and is clamped in an anti-slip groove on the peripheral surface of the roller shaft, the end shafts are respectively fixed at two ends of the roller shaft and are rotatably connected with the shaft seat, the glue cavity is formed in the inner side of the top of the inverted U-shaped frame, the bottom of the glue cavity is communicated with at least three telescopic glue passing pipes, the bottom of the, the side of the telescopic rubber tube is sleeved with a spring, one end shaft is connected with an output shaft of a gluing motor, the gluing motor is fixed at the end part of the inverted U-shaped frame, and a limiting ring is fixed on the side of one end of the longitudinal connecting rod, which is far away from the transverse moving motor, through a connecting rod.

The glue solution enters the glue solution cavity, then enters the gluing sponge strip through the telescopic glue passing tube, the spring presses the gluing sponge strip to the gluing sleeve, the gluing motor works to enable the roll shaft to rotate, the anti-slip strip is arranged on the inner side of the roll shaft in a protruding mode and drives the gluing sleeve to rotate, and the glue solution is coated on the circuit board.

Further, the packaging glue extrusion unit comprises an exhaust tube, an outer connecting electromagnetic valve, an exhaust valve, an air pump, a glue outlet tube, a supporting leg, a supporting seat, a packaging glue tank, a glue inlet tube, a tube plug and a connecting tube, wherein the top of the top plate is connected with the supporting seat through the supporting leg, the packaging glue tank is arranged on the supporting seat, the glue inlet tube is arranged at the top of the packaging glue tank, the tube plug is arranged at the top of the glue inlet tube, the air pump is further arranged on the top plate, the air outlet of the air pump is connected with one end of the connecting tube, the other end of the connecting tube is connected with the top of the packaging glue tank, the air inlet of the air pump is connected with one end of the exhaust tube, the other end of the exhaust tube extends to the lower side of the top plate, the exhaust valve is connected in series with the middle of the exhaust tube, the side surface of the exhaust tube close to the air, the other end of the rubber outlet pipe sequentially penetrates through the surface of the top plate and the limiting ring to be connected with the rubber liquid cavity.

Open the stopcock, glue solution is injected into to the encapsulation jar through advancing the rubber tube, then covers the stopcock, and the air pump work is given the encapsulation through the connecting pipe and is glued the jar internal pressure, promotes the glue solution and discharges into the glue liquid chamber through going out the rubber tube, through the switching of external connection solenoid valve and bleeder valve of external control ware control, can control from inside bleed or outside bleed to the inside negative pressure state of control can give the encapsulation again and glue the jar pressurization, kills two birds with one stone.

Further, still include the encapsulation and glue heating unit, the encapsulation is glued the heating unit and is contained preheating plate, heating wire and heat conduction copper, the inboard middle part of encapsulation glue jar is provided with the preheating plate, the bottom inboard of encapsulation glue jar is conical structure and the bottom inboard is equipped with spiral heating wire, the side of heating wire is equipped with the heat conduction copper that the heat conduction was used.

In order to avoid the solidification of the glue solution, the preheating plate is used for preheating firstly, and the heating plate is used for heating when the glue solution is extruded out quickly, so that the flowability of the glue solution is improved, the extrusion of the glue solution is facilitated, and the heat conduction efficiency is improved by the heat conduction copper plate.

Further, sealed unit includes curb plate, sealing door, sealing frame strip and observation window, braced frame's the left and right sides and rear side all are provided with the curb plate, and braced frame's front side swing joint has sealing door, sealing door's inboard is equipped with corresponds the positive sealing frame strip of braced frame, and the middle part of sealing door is inlayed and is had transparent observation window. The both sides and the rear side of braced frame are sealed to the curb plate, and the front side is used for getting and puts the circuit board tray, and the rubber coating progress can be observed behind sealing door to the observation window.

Further, sealed unit still includes fixed block, locking lever, locking piece and locked groove, the tip of sealing door is equipped with the fixed block, the side of fixed block is equipped with the locking lever that can plastic deformation, the side of locking lever is provided with the wedge fixture block, corresponds to be provided with the locking piece on the pillar of locking lever, set up the locked groove with the joint of wedge fixture block on the locking piece. The wedge-shaped fixture block can be clamped into the lock groove through the plastic deformation of the lock rod, and the wedge-shaped fixture block can be separated from the lock groove only by pulling the lock rod when the lock rod needs to be opened.

Further, indulge slide rail activity power pack includes mounting panel, movable block, dead lever, two-way screw rod, fixed cover, guide arm and motor power, the rear side both ends of bottom plate are equipped with the mounting panel respectively, rotate between two mounting panels and be connected with two-way screw rod, two-way screw rod's both ends screw thread opposite direction and middle part are provided with fixed cover, and two-way screw rod's one end and the motor power output shaft who fixes on the mounting panel, still are fixed with the guide arm that is on a parallel with two-way screw rod between two mounting panels, two-way screw rod's both ends respectively with the screw threaded connection on two movable blocks, and the sliding hole on two movable blocks all with guide arm sliding connection, and the front side of two movable blocks.

The power motor can drive the bidirectional screw rod to rotate when working, so that the two movable blocks move on the guide rod in an opposite direction or in a back-to-back direction.

Further, the fixed and surplus gluey collection unit that reaches of tray includes horizontal recess, indulges slide rail, surplus gluey collecting plate, slider, collecting vat, slope, fixture block, die-pin and draw-in groove, and the front end of two dead levers is connected with respectively and indulges the slide rail, horizontal recess has been seted up on the surface of bottom plate, and two bottoms of indulging the slide rail are equipped with the slider with horizontal recess sliding connection, and two outsides of indulging the slide rail are equipped with the die-pin, the draw-in groove has been seted up on the die-pin, the collecting vat has been seted up at the top of surplus gluey collecting plate, one side that the collecting vat is close to indulging the slide rail is.

Two vertical slide rails can be along with two movable blocks activities to according to the size adjustment of circuit board, the glue solution that the rubber coating cover surpassed the part of circuit board and dripped can fall into the collecting vat of surplus gluey collecting plate, and surplus gluey collecting plate passes through the fixture block and conveniently fixes in the draw-in groove of die-pin, also conveniently takes off.

Further, the circuit board tray includes layer board, circuit board draw-in groove, locating hole, side layer board, preceding layer board and the strip that sideslips, the circuit board draw-in groove has been seted up on the surface of layer board, and has seted up the locating hole in the circuit board draw-in groove, the both sides middle part of layer board is equipped with and indulges slide rail sliding connection's the strip that sideslips, the both sides top of layer board is equipped with the side layer board, the side layer board is with surplus gluey collecting plate upside parallel and level, the side is equipped with preceding layer board respectively around.

The circuit board is put into the circuit board draw-in groove, realizes the location through the locating hole, conveniently puts into through the side draw runner between two vertical slide rails, and the side layer board can avoid the glue solution to fall into vertical slide rail gap, and the front tray can collect the glue solution of the drippage of front and back side.

A packaging method of a packaging mechanism of a circuit board comprises the following steps;

the method comprises the following steps: the distance between the two fixed rods is controlled by the movable power unit of the longitudinal slide rail, so that the gap between the two longitudinal slide rails is proper;

step two: placing a circuit board in a circuit board clamping groove of the supporting plate, realizing position fixing through a positioning hole, and then installing the supporting plate on the longitudinal slide rail through the side sliding strip;

step three: the space in the supporting frame is sealed through the sealing unit, the packaging glue extruding unit stops pumping external air after the space is sealed and pumped into a negative pressure state, the packaging glue extruding unit pressurizes the packaging glue tank, so that the packaging glue at the bottom of the packaging glue tank enters the glue solution cavity along the glue outlet pipe, and then the packaging glue is coated on the glue coating sleeve through the telescopic glue conveying pipe and the glue coating sponge strip;

step four: the transverse moving unit drives the gluing unit to glue the circuit board on the supporting plate, and redundant glue solution flows into the collecting groove;

step five: and opening a sealing door of the sealing unit, and sliding the supporting plate out to take out the circuit board.

Compared with the prior art, the invention has the beneficial effects that: the packaging mechanism and the packaging method of the circuit board have the following advantages:

1. the braced frame inboard is sealed through sealed unit, conveniently take out into the negative pressure state with inside, be favorable to the glue solution closely to adhere to on the circuit board that needs the encapsulation, encapsulation is glued the extrusion unit and can is glued extrusion to rubber coating unit department with the encapsulation, let the rubber coating unit glue the circuit board, the circuit board tray can be adjusted according to the circuit board size, even circuit board tray size changes, also only need change the fixed subassembly to circuit board tray in the fixed and surplus gluey collection unit of tray through the activity power pack of vertical slide rail, be applicable to the circuit board rubber coating of different sizes.

2. In the transverse moving unit, a transverse moving motor can drive a gear to rotate through a gear shaft, and the pulley can roll in the sliding groove under the transmission action of the gear and the rack, so that the longitudinal connecting rod moves horizontally left and right along the transverse rod, the gluing unit at the bottom of the longitudinal connecting rod is driven to move left and right, and the circuit board is glued and packaged.

3. Can deal with the circuit board of the not-line model, fix the circuit board tray of unidimensional not to can prevent that the glue spreader from spilling unnecessary glue in a confused state of mind, collect unnecessary glue solution outside the circuit board size, avoid extravagant, reduce the clearance step, improve the availability factor.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is a schematic diagram of a partial cross-sectional structure of an encapsulating adhesive extruding unit according to the present invention;

FIG. 4 is a schematic view of a partial explosion structure of the tray fixing and residual glue collecting unit according to the present invention;

FIG. 5 is a schematic view of the internal structure of the present invention;

FIG. 6 is a schematic rear bottom view of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6B;

FIG. 8 is a cross-sectional view of a glue applying unit according to an embodiment of the invention;

fig. 9 is a schematic diagram of the rear side structure of the present invention.

Fig. 10 is a schematic cross-sectional view of a glue applying unit according to an embodiment of the invention.

In the figure: 1 supporting frame, 11 top plate, 12 support columns, 13 bottom plate, 2 sealing unit, 21 side plate, 22 sealing door, 23 sealing frame strip, 24 observation window, 25 fixing block, 26 locking rod, 27 locking block, 28 locking groove, 3 packaging glue extrusion unit, 31 air suction pipe, 32 external connecting pipe, 33 external connecting electromagnetic valve, 34 air suction valve, 35 air pump, 36 rubber outlet pipe, 37 supporting leg, 38 bracket, 39 packaging glue tank, 310 rubber inlet pipe, 311 pipe plug, 312 connecting pipe, 4 packaging glue heating unit, 41 preheating plate, 42 heating wire, 43 heat conducting copper plate, 5 transverse moving unit, 51 transverse rod, 52 limiting end block, 53 rack, 54 gear, 55 gear shaft, 56 transverse moving motor, 57 longitudinal connecting rod, 58 sliding groove, 59 pulley, 510 pulley shaft, 6 glue coating unit, 61 connecting rod, 62 limiting ring, 63 vertical rod, 64 inverted U-shaped frame, 65 glue coating sponge strip, 66, 67 end shaft, 68 glue coating sleeve, 69 roller shaft seat, The device comprises a glue solution cavity 610, a flexible glue passing tube 611, a spring 612, an anti-slip strip 613, a glue coating motor 614, a circuit board tray 7, a circuit board supporting plate 71, a circuit board clamping groove 72, a positioning hole 73, a side supporting plate 74, a front supporting plate 75, a side sliding strip 76, a tray fixing and residual glue collecting unit 8, a transverse groove 81, a longitudinal sliding rail 82, a residual glue collecting plate 83, a sliding block 84, a collecting groove 85, a slope 86, a clamping block 87, a supporting rod 88, a clamping groove 89, a longitudinal sliding rail movable power unit 9, a mounting plate 91, a movable block 92, a fixed rod 93, a bidirectional screw 94, a 95 fixed sleeve, a 96 guide rod, a power motor 97 and.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 5-7, and fig. 9, the present embodiment provides a technical solution: a packaging mechanism of a circuit board comprises a supporting frame 1, a sealing unit 2, a packaging adhesive extruding unit 3, a transverse moving unit 5, a gluing unit 6, a circuit board tray 7, a tray fixing and residual adhesive collecting unit 8 and a longitudinal slide rail movable power unit 9;

the supporting frame 1 comprises a top plate 11, pillars 12 and a bottom plate 13, the four corners of the bottom of the top plate 11 are connected with the four corners of the top of the bottom plate 13 through the four pillars 12, sealing units 2 are arranged on the periphery of the supporting frame 1 to enable the interior of the supporting frame 1 to form a closed space, a transverse moving unit 5 is transversely arranged in the middle of the bottom of the top plate 11, a gluing unit 6 is arranged at the bottom of the transverse moving unit 5, a packaging glue extruding unit 3 is arranged on the top plate 11 and is matched and connected with the gluing unit 6, a longitudinal sliding rail movable power unit 9 is arranged on the rear side of the surface of the bottom plate 13, a tray fixing and residual glue collecting unit 8 is arranged on the front side of the longitudinal sliding rail movable power unit 9, and a;

the transverse moving unit 5 comprises a transverse rod 51, a limiting end block 52, a rack 53, a gear 54, a gear shaft 55, a transverse moving motor 56, a longitudinal connecting rod 57, sliding grooves 58, pulleys 59 and a pulley shaft 510, wherein the transverse rod 51 is fixed in the middle of the bottom of the top plate 11, the limiting end blocks 52 are respectively clamped at two ends of the transverse rod 51, the sliding grooves 58 are respectively formed in the front side and the rear side of the transverse rod 51, the rack 53 is arranged in one sliding groove 58, the two ends of the longitudinal connecting rod 57 are respectively and rotatably connected with the gear shaft 55 and the pulley shaft 510, the gear 54 is fixedly connected to the top of the gear shaft 55, the gear 54 is clamped in the sliding grooves and is meshed with the rack 53, the pulley 59 is fixedly connected to the top of the pulley shaft 510, the pulley 59 is in rolling connection with the other sliding.

The inner side of the supporting frame 1 is sealed by the sealing unit 2, the inner part is conveniently pumped into a negative pressure state, glue solution is favorably and closely attached to a circuit board to be packaged, the packaging glue extrusion unit 3 can extrude the packaging glue to the gluing unit 6, the gluing unit 6 can glue the circuit board, the circuit board tray 7 can be adjusted according to the size of the circuit board, even if the size of the circuit board tray 7 is changed, only the components for fixing the tray and fixing the circuit board tray 7 in the residual glue collection unit 8 need to be changed by the longitudinal slide rail movable power unit 9, the device is suitable for gluing the circuit boards with different sizes, in the traverse unit 5, the traverse motor 56 can work by driving the gear shaft 55 to rotate, the gear 54 and the rack 53 can drive the pulley 59 to roll in the chute 58, and the longitudinal connecting rod 57 can horizontally move left and right along the transverse rod 51, thereby driving the gluing unit 6 at the bottom of the longitudinal connecting rod 57 to move left and right to glue and package the circuit board.

Referring to fig. 7-8, the glue applying unit 6 includes a connecting rod 61, a limiting ring 62, a vertical rod 63, an inverted U-shaped frame 64, a glue applying sponge strip 65, a shaft seat 66, an end shaft 67, a glue applying sleeve 68, a roller shaft 69, a glue solution cavity 610, a flexible glue passing tube 611, a spring 612, an anti-slip strip 613 and a glue applying motor 614 (see fig. 1), the top of the vertical rod 63 is fixed in the middle of the bottom of the longitudinal connecting rod 57, the bottom end of the vertical rod 63 is connected with the inverted U-shaped frame 64, the shaft seats 66 are fixed at two ends of the inverted U-shaped frame 64, the glue applying sleeve 68 is sleeved on the peripheral surface of the roller shaft 69, the anti-slip strip is convexly arranged on the inner side of the glue applying sleeve 68, the anti-slip strip 613 is clamped in the anti-slip groove on the peripheral surface of the roller shaft 69, the end shafts 67 are respectively fixed at two ends of the roller shaft 69, the two end shafts 67 are, the bottom of the telescopic rubber passing tube 611 is connected with a rubber coating sponge strip 65, the bottom of the rubber coating sponge strip 65 is in friction contact with the circumferential surface of the rubber coating sleeve 68, the circumferential surface of each telescopic rubber passing tube 611 is sleeved with a spring 612, one end shaft 67 is connected with an output shaft of a rubber coating motor 614, the rubber coating motor 614 is fixed at the end part of the inverted U-shaped frame 64, and a limiting ring 62 is fixed on the side surface of one end, far away from the transverse moving motor 56, of the longitudinal connecting rod 57 through a connecting rod 61. The glue coating sleeve 68 can be made of sponge material and has the capacity of adsorbing glue solution.

The glue solution enters the glue solution cavity 610, then enters the gluing sponge strip 65 through the telescopic glue passing tube 611, the spring 612 presses the gluing sponge strip 65 to the gluing sleeve 68, the gluing motor 614 works to enable the roller shaft 69 to rotate, the anti-slip strip is arranged on the inner side of the roller shaft 69 in a protruding mode, the anti-slip strip 613 drives the gluing sleeve 68 to rotate, and the glue solution is coated on the circuit board.

Referring to fig. 1-2, the package glue extruding unit 3 includes an air pumping pipe 31, an outer connecting pipe 32, an outer connecting solenoid valve 33, an air pumping valve 34, an air pump 35, a glue outlet pipe 36, a support leg 37, a support base 38, a package glue tank 39, a glue inlet pipe 310, a pipe plug 311 and a connecting pipe 312, the top of the top plate 11 is connected to the support base 38 through the support leg 37, the package glue tank 39 is disposed on the support base 38, the glue inlet pipe 310 is disposed on the top of the package glue tank 39, the pipe plug 311 is mounted on the top of the glue inlet pipe 310, the air pump 35 is further disposed on the top plate 11, an air outlet of the air pump 35 is connected to one end of the connecting pipe 312, the other end of the connecting pipe 312 is connected to the top of the package glue tank 39, an air inlet of the air pump 35 is connected to one end of the air pumping pipe 31, the other end of the air pumping pipe 31 extends to, the external connection solenoid valve 33 is connected in series on the external connection pipe 32, the bottom of the packaging glue tank 39 is connected with one end of the glue outlet pipe 36, and the other end of the glue outlet pipe 36 sequentially penetrates through the surface of the top plate 11 and the limiting ring 62 to be connected with the glue cavity 610. The air pressure monitoring device further comprises a pressure sensor (10), wherein the pressure sensor (10) is arranged on the inner side of the sealing unit 2 and used for monitoring the air pressure of the space on the inner side of the supporting frame 1. A strip-shaped chute (not shown) is arranged on the top plate in a through way, the strip-shaped chute is parallel to the cross rod, the rubber outlet pipe is a hose, and the upper part of the hose penetrates through the strip-shaped chute. So that the obtained rubber tube can move along with the longitudinal connecting rod.

The pipe plug 311 is opened, glue liquid is injected into the packaging glue tank 39 through the glue inlet pipe 310, then the pipe plug 311 is covered, the air pump 35 works to extract gas in the sealed space of the supporting frame through the air extraction pipe and pressurize the packaging glue tank 39 through the connecting pipe 312, the glue liquid is pushed to be discharged into the glue liquid cavity 610 through the glue outlet pipe 36, after the gas in the supporting frame is changed into negative pressure, the opening and closing of the external electromagnetic valve 33 and the air extraction valve 34 are controlled through an external controller, the internal air extraction can be controlled to be changed into external air extraction, and the air pump can pressurize the packaging glue tank 39 while controlling the internal negative pressure state, so that two purposes are achieved by one stroke.

Referring to fig. 3, the package adhesive heating unit 4 is further included, the package adhesive heating unit 4 includes a preheating plate 41, a heating wire 42 and a heat-conducting copper plate 43, the preheating plate 41 is disposed in the middle of the inner side of the package adhesive can 39, the inner side of the bottom of the package adhesive can 39 is a conical structure, the spiral heating wire 42 is disposed on the inner side of the bottom, and the heat-conducting copper plate 43 for conducting heat is disposed on the side of the heating wire 42.

In order to avoid the solidification of the glue solution, the preheating plate 41 is used for preheating firstly, and the heating wire 42 is used for heating when the glue solution is extruded out quickly, so that the flowability of the glue solution is improved, the extrusion of the glue solution is facilitated, and the heat conduction copper plate 43 improves the heat conduction efficiency, thereby achieving multiple purposes.

Referring to fig. 1 and 5, the sealing unit 2 includes a side plate 21, a sealing door 22, a sealing frame strip 23 and an observation window 24, the side plate 21 is disposed on both left and right sides and a rear side of the supporting frame 1, the sealing door 22 is movably connected to a front side of the supporting frame 1, the sealing frame strip 23 corresponding to a front side of the supporting frame 1 is disposed on an inner side of the sealing door 22, and the transparent observation window 24 is embedded in a middle portion of the sealing door 22. The side plates 21 seal the two sides and the rear side of the support frame 1, the front side is used for taking and placing the circuit board tray 7, and the observation window 24 can observe the gluing progress behind the sealing door 22.

The sealing unit 2 further comprises a fixing block 25, a lock rod 26, a locking block 27 and a locking groove 28, the fixing block 25 is arranged at the end of the sealing door 22, the lock rod 26 capable of being plastically deformed is arranged on the side surface of the fixing block 25, the wedge-shaped locking block is arranged on the side surface of the lock rod 26, the locking block 27 is arranged on the pillar 12 corresponding to the lock rod 26, and the locking groove 28 clamped with the wedge-shaped locking block is formed in the locking block 27. The wedge-shaped latch can be snapped into the locking groove 28 by plastic deformation of the locking rod 26, and only pulling the locking rod 26 to disengage the wedge-shaped latch from the locking groove 28 when opening is required.

Referring to fig. 9, the vertical slide rail movable power unit 9 includes mounting plates 91, movable blocks 92, fixing rods 93, two-way screws 94, fixing sleeves 95, guide rods 96 and power motors 97, the mounting plates 91 are respectively disposed at two ends of the rear side of the bottom plate 13, the two-way screws 94 are rotatably connected between the two mounting plates 91, the two ends of the two-way screws 94 are opposite in thread direction and the middle portions of the two ends of the two-way screws 94 are provided with the fixing sleeves 95, one end of the two-way screws 94 is connected to an output shaft of the power motors 97 fixed on the mounting plates 91, the guide rods 96 parallel to the two-way screws 94 are further fixed between the two mounting plates 91, two ends of the two-way screws 94 are respectively connected to screw holes of the two movable blocks 92, sliding holes of the two movable blocks 92 are both.

The power motor 97 is operated to rotate the two-way screw 94, so that the two movable blocks 92 move toward and away from each other on the guide rod 96.

Referring to fig. 1 and 4, the tray fixing and residual glue collecting unit 8 includes a horizontal groove 81, a vertical slide rail 82, a residual glue collecting plate 83, a slide block 84, a collecting groove 85, a slope 86, a block 87, a support rod 88 and a slot 89. Each fixed rod is fixed with a tray fixing and residual glue collecting unit 8. Specifically, the front ends of the two fixing rods 93 are connected with longitudinal slide rails 82 respectively, a transverse groove 81 is formed in the surface of the bottom plate 13, two sliding blocks 84 slidably connected with the transverse groove 81 are arranged at the bottoms of the longitudinal slide rails 82, two supporting rods 88 are arranged on the outer sides of the longitudinal slide rails 82, a clamping groove 89 is formed in each supporting rod 88, a collecting groove 85 is formed in the top of the residual glue collecting plate 83, a slope 86 is formed in one side, close to the longitudinal slide rails 82, of each collecting groove 85, and a clamping block 87 clamped with the clamping groove 89 is arranged at the bottom of the residual glue collecting plate 83.

Two vertical slide rails 82 can be along with two movable blocks 92 activities to according to the size adjustment of circuit board, the glue solution that the rubber coating cover surpassed the part of circuit board and dripped can fall into in surplus gluey collecting plate 83's collecting vat 85, and surplus gluey collecting plate 83 passes through fixture block 87 and conveniently fixes in the draw-in groove 89 of die-pin 88, also conveniently takes off.

Referring to fig. 1, the circuit board tray 7 includes a supporting plate 71, a circuit board slot 72, a positioning hole 73, a side supporting plate 74, a front supporting plate 75 and a side sliding strip 76, the surface of the supporting plate 71 is provided with the circuit board slot 72, the positioning hole 73 is formed in the circuit board slot 72, the middle parts of two sides of the supporting plate 71 are provided with the side sliding strip 76 slidably connected with a longitudinal sliding rail 82, the top parts of two sides of the supporting plate 71 are provided with the side supporting plate 74, the side supporting plate 74 is flush with the upper side of the residual glue collecting plate 83, and the front side and the rear side of the.

The circuit board is placed into the circuit board clamping groove 72, positioning is achieved through the positioning holes 73, the side sliding strips 76 are conveniently placed between the two longitudinal sliding rails 82, the side supporting plates 74 can prevent glue from falling into gaps of the longitudinal sliding rails 82, and the front supporting plates 75 can collect glue dripping from the front side and the rear side.

Referring to fig. 1-9, a method for packaging a packaging mechanism of a circuit board includes the following steps;

the method comprises the following steps: the distance between the two fixed rods 93 is controlled by the movable power unit 9 of the longitudinal slide rail, so that the gap between the two longitudinal slide rails 82 is proper;

step two: placing a circuit board in the circuit board clamping groove 72 of the supporting plate 71, fixing the position through the positioning hole 73, and then installing the supporting plate 71 on the longitudinal slide rail 82 through the side slide bar 76;

step three: the space in the supporting frame 1 is sealed through the sealing unit 2, the packaging adhesive extrusion unit 3 stops pumping external air after the space in the supporting frame 1 is sealed and pumped into a negative pressure state, the packaging adhesive extrusion unit 3 pressurizes the packaging adhesive tank 39, so that the packaging adhesive at the bottom of the packaging adhesive tank 39 enters the adhesive solution cavity 610 along the adhesive outlet pipe 36, and then is coated on the adhesive coating sleeve 68 through the flexible adhesive pipe 611 and the adhesive coating sponge strip 65;

step four: the traverse unit 5 drives the gluing unit 6 to glue the circuit board on the supporting plate 71, and redundant glue solution flows into the collecting tank 85;

step five: the sealing door 22 of the sealing unit 2 is opened, and the tray 71 is slid out to take out the circuit board.

For example, please refer to fig. 10 together, further, an air pump 600 is further disposed at an end of the inverted U-shaped frame 64, the air pump 600 is disposed at an end adjacent to the glue outlet tube 36, a hard sheet layer 651 is covered and fixed on an upper surface of the glue-coated sponge strip 65, an air bag sheet layer 652 is disposed on the hard sheet layer 651, an air bag gap 653 is formed in the air bag sheet layer 652, a hard top sheet 654 is fixed on a top of the air bag sheet layer 652, a plurality of first hoses 655 are uniformly disposed on the hard top sheet 654, the plurality of first hoses 655 are all connected to the air pump 600, a first hard tube 601 is further disposed at an output end of the air pump 600, and the first hard tube 601 is inserted into the glue cavity 610 and protrudes to an end of the glue outlet tube 36 away from an end wall of the inverted U-shaped frame 64. A plurality of flexible hoses 611 are hermetically inserted into the hard top sheet 654 and the hard sheet layer 651, and the ends thereof are connected with the rubberized sponge strips 65. The bottom ends of the springs 612 are attached to the upper surface of the stiff top plate 654.

During gluing, the air pump 600 is used for pumping high-pressure hot air into the glue solution cavity 610 through the first hard tube 601 to heat the glue solution and force the hot glue solution to flow into the plurality of flexible glue passing tubes 611 and reach the gluing sponge strips 65, and simultaneously, the high-pressure hot air is pumped into the air bag gaps 653 of the air bag sheet layers 652 through the plurality of first hoses 655 to force the hard sheet layers 651 to be far away from the hard top sheet 654, press the gluing sponge strips 65 to urge the gluing sponge strips 65 to abut against the gluing sleeve, and extrude the glue on the gluing sponge strips 65 to the gluing sleeve 68, so that the gluing efficiency is improved. The hot high-pressure hot air flow is convenient to heat the square surface and forces the glue solution to flow into the gluing sponge strip 65, and on the other hand, the glue solution can be extruded out through the hard sheet layer extrusion gluing strip 65, so that two purposes are achieved. For example, to prevent the glue from flowing backward into the glue outlet tube 36, a check valve 606 is disposed in the glue chamber 610 to allow the glue entering the glue outlet tube 36 to enter in one direction without going backward.

It should be noted that the traverse motor 56, the glue coating motor 614, the externally connected solenoid valve 33, the air pumping valve 34, the air pump 35, the preheating plate 41, the heating wire 42, the power motor 97 and the pressure sensor 10 disclosed in the above embodiments are all electrically connected to an external PLC controller, the preheating plate 41 is internally provided with a low-power heating wire, the external PLC controller controls the traverse motor 56, the glue coating motor 614, the externally connected solenoid valve 33, the air pumping valve 34, the air pump 35, the preheating plate 41, the heating wire 42 and the power motor 97 to operate by a method commonly used in the prior art, and other parts of the present invention, which are not detailed, are conventional technologies known to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A packaging mechanism of a circuit board is characterized in that: the packaging machine comprises a supporting frame (1), a sealing unit (2), a packaging adhesive extrusion unit (3), a transverse moving unit (5), an adhesive coating unit (6), a circuit board tray (7), a tray fixing and residual adhesive collecting unit (8) and a longitudinal slide rail movable power unit (9);

the supporting frame (1) comprises a top plate (11), pillars (12) and a bottom plate (13), the four corners of the bottom of the top plate (11) are connected with the four corners of the top of the bottom plate (13) through the four pillars (12), sealing units (2) are arranged on the periphery of the supporting frame (1) to enable the interior of the supporting frame (1) to form a closed space, a transverse moving unit (5) is transversely arranged in the middle of the bottom of the top plate (11), a gluing unit (6) is arranged at the bottom of the transverse moving unit (5), an encapsulating glue extruding unit (3) is arranged on the top plate (11) and is matched and connected with the gluing unit (6), a longitudinal sliding rail movable power unit (9) is arranged on the rear side of the surface of the bottom plate, a tray fixing and residual glue collecting unit (8) is arranged on the front side of the longitudinal slide rail movable power unit (9), and a circuit board tray (7) is arranged on the tray fixing and residual glue collecting unit (8);

the transverse moving unit (5) comprises a transverse rod (51), limiting end blocks (52), racks (53), gears (54), gear shafts (55), a transverse moving motor (56), longitudinal connecting rods (57), sliding grooves (58), pulleys (59) and pulley shafts (510), wherein the transverse rod (51) is fixed in the middle of the bottom of the top plate (11), the two ends of the transverse rod (51) are respectively clamped with the limiting end blocks (52), the front side and the rear side of the transverse rod (51) are respectively provided with the sliding grooves (58), one sliding groove (58) is internally provided with the rack (53), the two ends of the longitudinal connecting rod (57) are respectively rotatably connected with the gear shafts (55) and the pulley shafts (510), the top of each gear shaft (55) is fixedly connected with the gear (54), the gear (54) is clamped into the corresponding sliding groove and meshed with the corresponding rack (53), the top of each pulley shaft (510) is fixedly connected with a pulley (59, the bottom end of the gear shaft (55) is connected with an output shaft of a traverse motor (56), and the traverse motor (56) is fixed on a longitudinal connecting rod (57).

2. A packaging mechanism for circuit board according to claim 1, wherein: the gluing unit (6) comprises a connecting rod (61), a limiting ring (62), a vertical rod (63), an inverted U-shaped frame (64), a gluing sponge strip (65), a shaft seat (66), an end shaft (67), a gluing sleeve (68), a roller shaft (69), a glue cavity (610), a telescopic glue passing tube (611), a spring (612), an anti-slip strip (613) and a gluing motor (614), wherein the top of the vertical rod (63) is fixed in the middle of the bottom of the longitudinal connecting rod (57), the bottom end of the vertical rod (63) is connected with the inverted U-shaped frame (64), the shaft seats (66) are fixed at two ends of the inverted U-shaped frame (64), the gluing sleeve (68) is sleeved on the peripheral surface of the roller shaft (69), the anti-slip strip is convexly arranged on the inner side of the gluing sleeve (68), the anti-slip strip (613) is clamped in an anti-slip groove on the peripheral surface of the roller shaft (69), the end shafts (67) are respectively fixed at two ends, glue solution chamber (610) have been seted up to the top inboard of shape of falling U frame (64), the bottom intercommunication of glue solution chamber (610) is no less than three flexible rubber tube (611) that leads to, the bottom of flexible rubber tube (611) is connected with rubber coating sponge strip (65), the bottom of rubber coating sponge strip (65) and the global frictional contact of rubber coating cover (68), spring (612) have all been cup jointed to the global of every flexible rubber tube (611), one of them end-shaft (67) and the output shaft of rubber coating motor (614), and rubber coating motor (614) are fixed at the tip of shape of falling U frame (64), it is fixed spacing ring (62) through connecting rod (61) to indulge the one end side that sideslip motor (56) were kept away from in connecting rod (57).

3. A packaging mechanism for circuit board according to claim 2, wherein: the packaging glue extrusion unit (3) comprises an air suction pipe (31), an outer connecting pipe (32), an outer connecting electromagnetic valve (33), an air suction valve (34), an air pump (35), a glue outlet pipe (36), support legs (37), a support seat (38), a packaging glue tank (39), a glue inlet pipe (310), a pipe plug (311) and a connecting pipe (312), wherein the top of the top plate (11) is connected with the support seat (38) through the support legs (37), the packaging glue tank (39) is arranged on the support seat (38), the glue inlet pipe (310) is arranged on the top of the packaging glue tank (39), the pipe plug (311) is arranged on the top of the glue inlet pipe (310), the air pump (35) is further arranged on the top plate (11), the air outlet of the air pump (35) is connected with one end of the connecting pipe (312), the other end of the connecting pipe (312) is connected with the top of the packaging glue tank (39), the air inlet of the air pump (35) is connected with one end, the middle part of exhaust tube (31) has concatenated bleeder valve (34), and exhaust tube (31) are close to one end side connection outer union coupling (32) of air pump (35), have concatenated outer union coupling solenoid valve (33) on outer union coupling (32), and the one end of rubber outlet pipe (36) is connected to the bottom of encapsulation glue jar (39), and the other end of rubber outlet pipe (36) passes roof (11) surface and spacing ring (62) in proper order and then connects glue liquid chamber (610).

4. A packaging mechanism for circuit board according to claim 3, wherein: the packaging glue heating device is characterized by further comprising a packaging glue heating unit (4), wherein the packaging glue heating unit (4) comprises a preheating plate (41), an electric heating wire (42) and a heat conduction copper plate (43), the preheating plate (41) is arranged in the middle of the inner side of the packaging glue tank (39), the inner side of the bottom of the packaging glue tank (39) is of a conical structure, the spiral electric heating wire (42) is arranged on the inner side of the bottom of the packaging glue tank (39), and the heat conduction copper plate (43) for heat conduction is arranged on the side face.

5. A packaging mechanism for circuit board according to claim 4, characterized in that: sealed unit (2) include curb plate (21), sealing door (22), sealing frame strip (23) and observation window (24), and the left and right sides and the rear side of braced frame (1) all are provided with curb plate (21), and the front side swing joint of braced frame (1) has sealing door (22), and the inboard of sealing door (22) is equipped with corresponding positive sealing frame strip (23) of braced frame (1), and the middle part of sealing door (22) is inlayed and is had transparent observation window (24).

6. A packaging mechanism for circuit board according to claim 5, characterized in that: sealing unit (2) still includes fixed block (25), locking lever (26), locking piece (27) and locked groove (28), and the tip of sealing door (22) is equipped with fixed block (25), and the side of fixed block (25) is equipped with locking lever (26) that can plastic deformation, and the side of locking lever (26) is provided with the wedge fixture block, is provided with locking piece (27) on pillar (12) of corresponding locking lever (26), offers locked groove (28) with the joint of wedge fixture block on locking piece (27).

7. A packaging mechanism for circuit board according to claim 6, wherein: the longitudinal slide rail movable power unit (9) comprises mounting plates (91), movable blocks (92), a fixed rod (93), a two-way screw rod (94), a fixed sleeve (95), a guide rod (96) and a power motor (97), wherein the mounting plates (91) are respectively arranged at two ends of the rear side of a bottom plate (13), the two-way screw rod (94) is rotatably connected between the two mounting plates (91), the two ends of the two-way screw rod (94) are opposite in thread direction, the middle part of the two-way screw rod (94) is provided with the fixed sleeve (95), one end of the two-way screw rod (94) is connected with an output shaft of the power motor (97) fixed on the mounting plates (91), the guide rod (96) parallel to the two-way screw rod (94) is also fixed between the two mounting plates (91), two ends of the two-way screw rod (94) are respectively connected with screw holes, and the front sides of the two movable blocks (92) are respectively provided with a fixed rod (93).

8. A packaging mechanism for circuit board according to claim 7, wherein: the tray fixing and residual glue collecting unit (8) comprises a transverse groove (81), longitudinal slide rails (82), a residual glue collecting plate (83), a sliding block (84), a collecting groove (85), a slope (86), a clamping block (87), support rods (88) and clamping grooves (89), wherein the front ends of two fixing rods (93) are respectively connected with the longitudinal slide rails (82), the transverse groove (81) is formed in the surface of the bottom plate (13), the sliding block (84) which is in sliding connection with the transverse groove (81) is arranged at the bottom of each longitudinal slide rail (82), the support rods (88) are arranged on the outer sides of the two longitudinal slide rails (82), the clamping grooves (89) are formed in the support rods (88), the collecting groove (85) is formed in the top of the residual glue collecting plate (83), and the slope (86) is arranged on one side, close to the longitudinal slide, and the bottom of the residual glue collecting plate (83) is provided with a clamping block (87) clamped with the clamping groove (89).

9. A packaging mechanism for circuit board according to claim 8, wherein: circuit board tray (7) include layer board (71), circuit board draw-in groove (72), locating hole (73), side layer board (74), preceding layer board (75) and strip (76) that sideslips, circuit board draw-in groove (72) have been seted up on the surface of layer board (71), and set up locating hole (73) in circuit board draw-in groove (72), the both sides middle part of layer board (71) is equipped with and indulges slide rail (82) sliding connection's side draw-in strip (76), the both sides top of layer board (71) is equipped with side layer board (74), side layer board (74) and surplus gluey collecting plate (83) upside parallel and level, the front and back side of layer board (71) is equipped with preceding layer board (75) respectively, link up on the roof and seted up the bar spout, the bar spout is parallel with the horizontal pole.

10. A method of packaging a packaging mechanism for a circuit board according to any one of claims 1 to 9, wherein: comprises the following steps;

the method comprises the following steps: the distance between the two fixed rods (93) is controlled by the movable power unit (9) of the longitudinal slide rail, so that the gap between the two longitudinal slide rails (82) is proper;

step two: a circuit board is placed in a circuit board clamping groove (72) of the supporting plate (71), the position is fixed through a positioning hole (73), and then the supporting plate (71) is installed on a longitudinal slide rail (82) through a side slide bar (76);

step three: the space in the supporting frame (1) is sealed through the sealing unit (2), the packaging glue extruding unit (3) stops pumping external air after the space in the supporting frame is hermetically pumped into a negative pressure state, the packaging glue extruding unit (3) pressurizes the packaging glue tank (39), so that the packaging glue at the bottom of the packaging glue tank (39) enters the glue solution cavity (610) along the glue outlet pipe (36), and then is coated on the glue coating sleeve (68) through the telescopic glue inlet pipe (611) and the glue coating sponge strip (65);

step four: the transverse moving unit (5) drives the gluing unit (6) to glue the circuit board on the supporting plate (71), and redundant glue solution flows into the collecting groove (85);

step five: and opening a sealing door (22) of the sealing unit (2), and sliding the supporting plate (71) out to take out the circuit board.