CN115365071A - Dispensing mechanism of PCB - Google Patents
Dispensing mechanism of PCB Download PDFInfo
- Publication number
- CN115365071A CN115365071A CN202210923970.3A CN202210923970A CN115365071A CN 115365071 A CN115365071 A CN 115365071A CN 202210923970 A CN202210923970 A CN 202210923970A CN 115365071 A CN115365071 A CN 115365071A
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- pcb
- plate
- glue
- dispensing mechanism
- pcb board
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
- H05K3/305—Affixing by adhesive
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coating Apparatus (AREA)
Abstract
The invention relates to the technical field of PCB processing, and particularly discloses a glue dispensing mechanism of a PCB. The point gum machine of PCB board constructs including equipment panel beating and bottom fixed mounting's workstation, the inboard top fixed mounting of equipment panel beating has first ultraviolet curing banks, the last fixed surface of workstation installs spill shell spare, just the top fixed mounting of spill shell spare has second ultraviolet curing banks. The automatic overturning device realizes the automatic overturning and glue curing work of the PCB during the conveying process, the PCB is horizontally placed when the front side and the back side glue dispensing work is carried out, the problem that the undried glue slides and drips on the surface of the PCB is avoided, the glue dispensing efficiency and quality are improved, the overturning state of the clamp for clamping the PCB is controlled through different tooth arrangement modes in the first ring groove, the double-side glue dispensing work of the PCB is carried out in a matched mode, and meanwhile, the quick clamping, feeding and discharging work of the PCB with different thicknesses can be carried out by utilizing the action of magnetic attraction.
Description
Technical Field
The invention relates to the technical field of PCB processing, in particular to a glue dispensing mechanism of a PCB.
Background
The PCB dispensing processing is to carry out bonding sealing and waterproof protection work on the PCB chip of the electronic product, can well prolong the service effect and the service life of the chip on the PCB circuit board of the electronic product, well carry out long-term effective protection on sensitive circuit boards of some electronic equipment and some electronic components, and achieve the waterproof, dustproof and anticorrosion of the PCB.
For example, the Chinese patent application number is: CN 107051826A's "two-sided synchronous dispensing machine", it is including being used for with the vertical conveyor who supports and follow vertical transport of lamp plate, the symmetry sets up in the adhesive deposite device and the space moving platform of conveyor's both sides, and the space moving platform is including driving the elevating system that each adhesive deposite device goes up and down and driving the transverse movement mechanism that the adhesive deposite device of conveyor both sides transversely moved relatively in order to carry out the point to the two sides of lamp plate respectively. The device conveys the lamp panel by arranging the conveying device, the dispensing devices are respectively arranged on the two sides of the conveying device, and the dispensing devices on the two sides of the conveying device are symmetrically arranged; and the lifting mechanism is arranged to drive the adhesive dispensing devices to lift, and the transverse moving mechanism is arranged to drive the adhesive dispensing devices on the two sides of the conveying device to move relatively, so that the two sides of the lamp panel on the conveying device are synchronously dispensed, and the adhesive dispensing efficiency is improved.
In the prior art, in order to improve the dispensing efficiency of the PCB board requiring double-sided dispensing work, after the PCB board is horizontally or vertically placed, two groups of dispensing mechanisms are adopted to dispense the front and back sides of the PCB board respectively, the existing glue for dispensing is fluid when being dispensed to the surface of the board, the glue on the back side of the PCB board placed on the water surface can drip due to the action of self gravity, the glue injected on the two sides of the vertically placed PCB board can slide downwards due to the self gravity, so that the dispensing precision is reduced, the problem of dispensing dislocation occurs, thereby the protective performance of the finished PCB board is greatly reduced, especially the ultraviolet curing UV glue under special curing conditions is used, the curing conditions can be gradually solidified after being irradiated by a UV lamp, therefore, the traditional double-sided dispensing equipment can not use the ultraviolet curing UV glue to perform dispensing work pertinently, and certain limitation is achieved.
Disclosure of Invention
The invention aims to provide a glue dispensing mechanism for a PCB (printed circuit board), which aims to solve the problems that the glue dispensing precision is reduced and the glue dispensing dislocation is caused because glue at the back of the PCB placed on the water surface slides downwards due to the self gravity when the existing glue dispensing glue is dispensed to the surface of a board when the PCB is placed horizontally or vertically and then two groups of glue dispensing mechanisms are adopted to respectively dispense glue on the front side and the back side of the PCB after the PCB is placed horizontally or vertically, so that the protective performance of a finished PCB is greatly reduced.
In order to achieve the purpose, the invention provides the following technical scheme: a glue dispensing mechanism for a PCB comprises an equipment metal plate and a workbench fixedly mounted at the bottom of the equipment metal plate, wherein a first ultraviolet curing lamp group is fixedly mounted at the top of the inner side of the equipment metal plate, a concave shell is fixedly mounted on the upper surface of the workbench, a second ultraviolet curing lamp group is fixedly mounted at the top of the concave shell, a rotary conveying mechanism is movably mounted at the inner side of the concave shell, and a front glue dispensing mechanism and a back glue dispensing mechanism are fixedly mounted on two sides of the upper surface of the workbench respectively;
four plate turnover mechanisms are uniformly and movably mounted on the outer side of the top of the rotary conveying mechanism, the rotary conveying mechanism comprises a support plate and a rotary end socket movably inserted into the top of the axis of the support plate, the bottom of the rotary end socket is movably connected with a first servo motor, a limiting frame is fixedly mounted on the outer side of the first servo motor, the top of the limiting frame is fixedly mounted with the bottom of the support plate, a first annular groove and a second annular groove are concentrically formed in the top of the support plate from outside to inside in sequence, the axes of the first annular groove and the second annular groove are on the same straight line with the axis of the support plate, a group of continuous teeth are arranged on the inner side of the first annular groove under the front surface point gluing mechanism in an anticlockwise surrounding mode by 270 degrees as a starting point, and the tooth pitch of the group of teeth between 0 and 180 degrees in the anticlockwise direction is twice the tooth pitch of between 180 and 270 degrees in the clockwise direction;
the four plate turnover mechanisms comprise fixed frames, turnover assemblies, clamps and plate fastening frames, wherein one end of each fixed frame is fixedly installed on the outer side of the top of the corresponding rotating end, the other end of each fixed frame is fixedly installed on one end of each turnover assembly, and the other end of each turnover assembly is movably installed on one side of each plate fastening frame through the corresponding clamp; the turnover assembly comprises a bottom frame, a transmission belt, a driven wheel and a connecting rod, wherein a rotating shaft is movably inserted into one side of the bottom frame, a driving wheel is fixedly clamped on the outer side of one end of the rotating shaft, a gear is fixedly clamped on the other end of the rotating shaft, the bottom of the gear is meshed with teeth and is connected with the outer side of the driven wheel through the transmission belt, and the axis of the driven wheel is fixedly clamped on one side of the clamp through the connecting rod.
Preferably, mechanism is glued to front side point and mechanism is glued to reverse side point all includes horizontal pole, second servo motor, keysets, montant, lead screw motor, the one end of horizontal pole and second servo motor's outside fixed mounting, the belt has been cup jointed in second servo motor's one end activity, one side movable mounting of keysets and montant is passed through to one side of belt, the opposite side movable mounting of montant has first cardboard, one side fixed mounting of first cardboard has the injecting glue end, the opposite side of cardboard passes through lead screw and lead screw motor movable mounting.
Preferably, the bottom of one end of keysets is fixed mounting has infrared locator, the top fixed mounting of montant has the pump of glue injection, the bottom of glue injection pump is linked together there is the rubber pipe, the bottom of rubber pipe is linked together with the top of injecting glue end.
Preferably, be equipped with the guide rail between first annular, the second annular, the bottom movable mounting of mount has the bracing piece, the bottom movable mounting of bracing piece has the slider, the bottom of slider and the top slidable mounting of guide rail.
Preferably, the bottom of one end of the underframe is movably provided with a limiting roller, and the bottom of the limiting roller is slidably arranged with the inner side of the second ring groove.
Preferably, the top of the fixing frame is fixedly provided with a vertical plate, the top of the vertical plate is fixedly provided with a top plate, the top of the top plate is slidably provided with a telescopic plate, and the bottom of one side of the telescopic plate is movably connected with a telescopic cylinder.
Preferably, a second clamping plate is fixedly mounted at the bottom of the other side of the expansion plate, a sleeve is movably clamped at the bottom of the second clamping plate, and the inner side of the sleeve and the outer side of the rotating shaft are movably mounted.
Preferably, panel fastening frame includes the frame, the inboard movable mounting of frame has the magnetism of two subtend settings to inhale the spacing clamp, two movable mounting has the double-threaded rod between the spacing clamp is inhaled to magnetism, two sets of reverse screw threads have been seted up to the double-threaded rod outside symmetry.
Preferably, two the spacing clamp of inhaling all includes outer splint and inner splint, the top of inner splint is pegged graft with the top activity of outer splint, the top fixed mounting of outer splint has the fixture block, the slot has been seted up at the top of frame, the top of fixture block is pegged graft with the inboard activity of slot.
Preferably, a plurality of first magnetic blocks are uniformly and fixedly mounted at the bottom of the outer clamping plate, a plurality of second magnetic blocks are uniformly and fixedly mounted at the top of the inner clamping plate, and the first magnetic blocks and the second magnetic blocks are oppositely mounted in different poles.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, ultraviolet curing UV glue is used, the front side glue dispensing mechanism and the back side glue dispensing mechanism are respectively arranged at the tops of two sides of the rotary conveying mechanism and are respectively used for carrying out glue dispensing treatment on the front side and the back side of a PCB, the PCB is clamped at the inner side of one end of the plate turnover mechanism outside the rotary conveying mechanism, the plate turnover mechanism can carry the PCB to carry out turnover work while carrying out surrounding displacement at the top of a workbench, so that after front side glue dispensing is carried out under the front side glue dispensing mechanism, the PCB is displaced to the position under the back side glue dispensing mechanism along with the plate turnover mechanism, the front side glue dispensing curing work is completed in the period, then 180-degree turnover is carried out for carrying out back side glue dispensing work, the self-turnover and glue curing work of the PCB in the conveying process are realized, the PCB is horizontally placed during the front side and back side glue dispensing work, the problem that undried glue slides and drips on the surface of the PCB is avoided, and the glue dispensing efficiency and quality are improved.
2. In the invention, the tooth pitch uniformly arranged between 0 and 180 degrees inside the first ring groove is twice of the tooth pitch between 180 and 270 degrees inside the first ring groove, and the gear is not completely matched and connected when being positioned between 0 and 180 degrees inside the first ring groove; when the gear 736 is positioned between 180 and 270 degrees inside the first ring groove 32, the complete meshing assembly is performed, therefore, when the turnover assembly rotates and displaces 180 to 270 degrees along with the rotating end, the rotating speed of the gear is twice of that of the front end, the rotation path of the gear is a quarter circle, the reverse side of the PCB can also be quickly turned over by 180 degrees, so that the front side of the PCB returns to the initial position to perform blanking operation, and between 270 to 360 degrees anticlockwise, teeth are not arranged in the first ring groove, the gear is not contacted, the clamp and the PCB clamped inside the clamp cannot deflect, and the gear is horizontally placed and displaced to the position right below the front side dispensing mechanism 4 to perform dispensing treatment; after the front side of the PCB is glued, the PCB rotates between 0-270 degrees inside the first ring groove 32, the gear is pushed by teeth to drive the rotating shaft and the driving wheel fixed on the outer side of the rotating shaft to rotate, so that the driven wheel connected with the driving wheel through the transmission belt rotates, the driven wheel drives the clamp and the PCB clamped on the inner side of the clamp through the connecting rod to overturn for 180 degrees, the reverse side of the PCB is right under the reverse side gluing mechanism 5, so that the reverse side gluing treatment is carried out, different tooth arrangement modes in the first ring groove are adopted, the PCB clamp is controlled to clamp the overturning state of the PCB, and the PCB is matched to carry out double-side gluing work in the gluing work.
3. According to the PCB clamping device, during the PCB feeding process, a PCB is placed between the lower surface of the inner clamping plate and the upper surface of the outer clamping plate to be clamped, the inner clamping plate and the outer clamping plate can clamp and fasten the inner PCB due to the action of magnetic attraction between the first magnetic block and the second magnetic block, and the PCB with different thicknesses can be rapidly clamped, fed and discharged by the action of the magnetic attraction.
Drawings
FIG. 1 is a schematic structural view of a dispensing mechanism of a PCB board according to the present invention;
FIG. 2 is a schematic diagram of an internal structure of a dispensing mechanism of a PCB board according to the present invention;
FIG. 3 is an enlarged schematic view of the point A in FIG. 2;
FIG. 4 is a schematic top view of a rotary conveying mechanism of a dispensing mechanism for PCB boards according to the present invention;
FIG. 5 is a schematic bottom structure view of a rotary conveying mechanism of a dispensing mechanism for PCB boards according to the present invention;
FIG. 6 is a schematic structural diagram of a plate turnover mechanism of a glue dispensing mechanism of a PCB board according to the present invention;
fig. 7 is a schematic structural view of a turning assembly of a dispensing mechanism of a PCB board of the present invention;
FIG. 8 is a schematic view of an installation structure of a board turnover mechanism of a glue dispensing mechanism of a PCB board of the present invention;
FIG. 9 is a schematic structural view of a board fastening frame of a glue dispensing mechanism for PCB boards according to the present invention;
FIG. 10 is a schematic view of a magnetic suction spacing clip of a glue dispensing mechanism of a PCB board according to the present invention;
fig. 11 is a sectional view of a magnetic attraction limiting clamp of a glue dispensing mechanism of a PCB according to the present invention.
In the figure:
1. equipment sheet metal;
2. a work table; 20. a concave shell member;
3. a rotary conveying mechanism; 30. a support plate; 31. rotating the end head; 32. a first ring groove; 33. teeth; 34. a guide rail; 35. a second ring groove; 36. a first servo motor; 37. a limiting frame;
4. a front glue dispensing mechanism; 40. a cross bar; 41. a second servo motor; 42. a belt; 43. an adapter plate; 430. an infrared locator; 44. a glue injection pump; 45. a vertical rod; 46. a rubber guide tube; 47. injecting glue end heads; 48. a screw motor; 480. a screw rod; 481. a first card;
5. a reverse dispensing mechanism;
6. a first ultraviolet curing lamp group;
7. a plate turnover mechanism; 70. a fixed mount; 71. a support bar; 72. a slider; 720. an outer splint; 721. a clamping block; 722. an inner splint; 723. a second magnetic block; 724. a first magnetic block; 73. turning over the assembly; 730. a chassis; 731. a rotating shaft; 732. limiting rollers; 733. a sleeve; 734. a driving wheel; 735. a transmission belt; 736. a gear; 737. a vertical plate; 738. a telescopic cylinder; 739. a top plate; 74. a clamp; 740. a retractable plate; 741. a second clamping plate; 742. a driven wheel; 743. a connecting rod; 75. a panel fastening frame; 750. an outer frame; 751. a slot; 752. magnetically attracting the limiting clamp; 753. a double threaded rod;
8. and a second ultraviolet curing lamp group.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, 2, 4, 5, 6, 7, and 8: a dispensing mechanism of a PCB (printed circuit board) comprises an equipment sheet metal 1 and a workbench 2 fixedly installed at the bottom of the equipment sheet metal 1, wherein a first ultraviolet curing lamp group 6 is fixedly installed at the top of the inner side of the equipment sheet metal 1, a concave shell part 20 is fixedly installed on the upper surface of the workbench 2, a second ultraviolet curing lamp group 8 is fixedly installed at the top of the concave shell part 20, a rotary conveying mechanism 3 is movably installed at the inner side of the concave shell part 20, four plate turnover mechanisms 7 are uniformly and movably installed at the outer side of the top of the rotary conveying mechanism 3, and a front dispensing mechanism 4 and a back dispensing mechanism 5 are respectively and fixedly installed at two sides of the upper surface of the workbench 2; this glue dispensing equipment uses ultraviolet curing UV glue, in the upper and lower both ends of the rotary conveying mechanism 3 that is used for the PCB board that the circulation transport needs the point to glue to handle, there are first ultraviolet curing banks 6, the second ultraviolet curing banks 8 respectively fixed mounting, it produces the ultraviolet ray and is used for the solidification of UV glue, and be provided with front point gum machine structure 4 and reverse point gum machine structure 5 respectively at the both sides top of rotary conveying mechanism 3, both are used for carrying out the point to glue to the tow sides of PCB board respectively and handle, and the PCB board is inboard in the one end of the panel tilting mechanism 7 of centre gripping in the rotary conveying mechanism 3 outside, panel tilting mechanism 7 portability PCB board is in the top of workstation 2 when encircleing the displacement, carry out the upset work, thereby can carry out the front point under mechanism 4 and glue the back, when following panel tilting mechanism 7 displacement to reverse point gum machine structure 5 under, the upset work of 180 degrees is accomplished, during, the UV glue after the PCB board front point glued has been accomplished the solidification under the common irradiation of first ultraviolet curing banks 6, second ultraviolet curing banks 8.
The four plate turnover mechanisms 7 are uniformly and movably mounted on the outer side of the top of the rotary conveying mechanism 3, the rotary conveying mechanism 3 comprises a supporting plate 30 and a rotary end head 31 movably inserted at the top of the axis of the supporting plate, the bottom of the rotary end head 31 is movably connected with a first servo motor 36, a limiting frame 37 is fixedly mounted on the outer side of the first servo motor 36, and the top of the limiting frame 37 is fixedly mounted with the bottom of the supporting plate 30; the outer side of the bottom of the first servo motor 36 is fixedly mounted with the bottom of the supporting plate 30 through the limiting frame 37, and after the first servo motor 36 is started, the four plate turnover mechanisms 7 on the outer side are driven to rotate and displace by taking the axis of the supporting plate 30 as a rotating shaft through the rotating end 31 on the top of the first servo motor.
Each of the four plate turnover mechanisms 7 comprises a fixed frame 70, a turnover assembly 73, a clamp 74 and a plate fastening frame 75, wherein one end of the fixed frame 70 is fixedly mounted on the outer side of the top of the rotating end 31, the other end of the fixed frame 70 is fixedly mounted on one end of the turnover assembly 73, and the other end of the turnover assembly 73 is movably mounted on one side of the plate fastening frame 75 through the clamp 74; the plate turnover mechanism 7 is fixedly connected with the outer side of the rotating end 31 through a fixing frame 70 at one end of the plate turnover mechanism 7, and a clamp 74 at the other end of the plate turnover mechanism 7 is used for clamping the PCB in batches.
The overturning assembly 73 comprises a bottom frame 730, a transmission belt 735, a driven wheel 742 and a connecting rod 743, a rotating shaft 731 is movably inserted and connected to one side of the bottom frame 730, a driving wheel 734 is fixedly clamped and connected to the outer side of one end of the rotating shaft 731, a gear 736 is fixedly clamped and connected to the other end of the rotating shaft 731, the bottom of the gear 736 is meshed and connected with teeth 33, the outer side of the driving wheel 734 is movably connected to the outer side of the driven wheel 742 through the transmission belt 735, the axis of the driven wheel 742 is fixedly clamped and connected to one side of the clamp 74 through the connecting rod 743, a first annular groove 32 and a second annular groove 35 are concentrically arranged on the top of the support plate 30 from outside to inside in sequence, the axes of the first annular groove 32 and the second annular groove 35 are all on the same straight line with the axis of the support plate 30, a group of continuous teeth 33 is arranged around a starting point 270 degrees counterclockwise around the inner side of the front glue dispensing mechanism 4, and the tooth pitch between the teeth 33 is twice the tooth pitch between 180 degrees clockwise and 180 degrees.
The material loading position of the PCB is the front position of the supporting plate 30, when the rotating end head 31 drives the plate turnover mechanism 7 at the outer side to rotate and displace counterclockwise by taking the axis of the supporting plate 30 as the rotating axis and taking the supporting plate 30 as the starting point, the gear 736 at the bottom of the turnover assembly 73 of the plate turnover mechanism 7 is positioned at the inner side of the first annular groove 32, the displacement is counterclockwise between 270 and 360 degrees at first, the gear 736 is not deflected when the teeth 33 are not arranged in the first annular groove 32, the deflection of the gear 736 is not generated, the clamp 74 and the PCB clamped at the inner side thereof cannot be deflected, and the horizontal placement position is shifted to the position right below the front dispensing mechanism 4 for dispensing; after the front side of the PCB is glued, the rotating end 31 is continuously opened, so that the board turnover mechanism 7 continuously rotates counterclockwise by taking the axis of the supporting plate 30 as the rotating axis, at this time, teeth 33 connected with the gear 736 are arranged between 0 to 270 degrees inside the first ring groove 32, in the process that the turnover component 73 of the board turnover mechanism 7 rotates along with the rotating end 31, the gear 736 is pushed by the teeth 33 to drive the rotating shaft and the driving wheel 731 fixed on the outer side thereof to rotate, so that the driven wheel 742 connected with the driving wheel 734 through the transmission belt 735 rotates, and further the driven wheel 742 drives the clamp 74 and the PCB clamped on the inner side thereof through the connecting rod 743 to turn over, and the clamp after 180 degrees turns over is completed, so that the reverse side of the PCB is just under the reverse side gluing mechanism 5, so as to perform glue dispensing treatment, the tooth 33 pitch uniformly arranged by 0 to 180 degrees inside the first ring groove 32 is twice the tooth 33 pitch between 180 to 270 degrees inside the first ring groove, and the gear 736 is located between 0 to 180 degrees inside the first ring groove 32 and is not completely matched with the first ring groove; when the gear 736 is located in the first groove 32 for 180-270 degrees, the complete engagement assembly is performed, so that when the turnover component 73 of the plate turnover mechanism 7 follows the rotary end 31 and continuously rotates for 180-270 degrees, the rotation speed of the gear 736 is twice of that of the front end, and the rotation path thereof is a quarter circle, the reverse side turnover of the PCB can be rapidly completed for 180 degrees, so that the front side is turned back to the initial position to perform the blanking operation.
According to fig. 3, the front dispensing mechanism 4 and the back dispensing mechanism 5 both include a cross rod 40, a second servo motor 41, an adapter plate 43, a vertical rod 45, a lead screw 480 and a lead screw motor 48, one end of the cross rod 40 is fixedly mounted on the outer side of the second servo motor 41, a belt 42 is movably sleeved on one end of the second servo motor 41, one side of the belt 42 is movably mounted on one side of the vertical rod 45 through the adapter plate 43, a first clamping plate 481 is movably mounted on the other side of the vertical rod 45, a glue injection end 47 is fixedly mounted on one side of the first clamping plate 481, and the other side of the first clamping plate 481 is movably mounted on the lead screw 48 through the lead screw 480. When the PCB is moved to the front dispensing mechanism 4/the back dispensing mechanism 5 for dispensing, the lead screw motor 48 controls the lead screw 480 to adjust the height of the first clamping plate 481 on one side of the lead screw 480, so that the Z-axis position adjustment of the glue injection end 47 fixedly mounted on one side of the first clamping plate 481 can be quickly completed, the Y-axis adjustment of the glue injection end 47 can be changed along with the belt 42, and the rotation of the belt 42 is driven by the second servo motor 41.
According to the illustration in fig. 3, an infrared positioner 430 is fixedly mounted at the bottom of one end of the adapter plate 43, the infrared positioner 430 is used for accurately positioning the position of the PCB, so as to adjust the glue injection displacement of the glue injection end 47 on the top of the PCB, a glue injection pump 44 is fixedly mounted at the top end of the vertical rod 45, a glue guide tube 46 is communicated with the bottom end of the glue injection pump 44, the bottom end of the glue guide tube 46 is communicated with the top end of the glue injection end 47, one end of the glue guide tube 46 is externally connected with a UV glue storage tank, after the glue injection pump 44 is started, UV glue is injected into the glue injection end 47 through the glue guide tube 46 in a pressurized manner, the glue is then dispensed at the glue dispensing position on the surface of the bottom PCB, and the UV glue is finally cured after being irradiated by the first ultraviolet curing lamp group 6 and the second ultraviolet curing lamp group 8.
As shown in fig. 4 and 6, a guide rail 34 is disposed between the first annular groove 32 and the second annular groove 35, a support rod 71 is movably mounted at the bottom end of the fixing frame 70, a slider 72 is movably mounted at the bottom end of the support rod 71, and the bottom of the slider 72 is slidably mounted on the top of the guide rail 34; the bottom of the supporting rod 71 is deviated from the displacement direction of the plate turnover mechanism 7, when the plate turnover mechanism 7 rotates counterclockwise along the upper surface of the supporting plate 30 along with the rotating end 31, the sliding block 72 will also slide counterclockwise along the guide rail 34, and the supporting rod 71 plays a role in supporting the plate turnover mechanism 7 during displacement, so as to prevent the plate turnover mechanism 7 from falling.
As shown in fig. 8, a limiting roller 732 is movably mounted at the bottom of one end of the chassis 730, and the bottom of the limiting roller 732 is slidably mounted inside the second annular groove 35, so that the limiting roller 732 slides inside the second annular groove 35 when the board turnover mechanism 7 rotates counterclockwise along with the rotating end 31 on the upper surface of the supporting plate 30, in order to prevent the board turnover mechanism 7 from toppling over and being misaligned, and to improve the stability of the PCB during the transportation and dispensing processes.
According to fig. 7, a vertical plate 737 is fixedly installed at the top of the fixing frame 70, a top plate 739 is fixedly installed at the top of the vertical plate 737, a telescopic plate 740 is slidably installed at the top of the top plate 739, and a telescopic cylinder 738 is movably connected to the bottom of one side of the telescopic plate 740; the telescopic cylinder 738 can control the clamp 74 and the PCB inside the clamp to move along the X axis during the dispensing operation under the front dispensing mechanism 4 and the back dispensing mechanism 5 by controlling the telescopic length of the telescopic plate 740, and the relative position of the three axes X, Y, Z between the PCB and the glue injection end 47 can be achieved by matching the front dispensing mechanism 4/the back dispensing mechanism 5 during the dispensing operation.
As shown in fig. 7, a second clamping plate 741 is fixedly mounted at the bottom of the other side of the telescopic plate 740, a sleeve 733 is movably clamped at the bottom of the second clamping plate 741, and the inner side of the sleeve 733 is movably mounted with the outer side of the rotating shaft 731; when the sleeve 733 rotates along with the rotating shaft 731, the second clamping plate 741 is always movably clamped to the outside of the sleeve 733, one side of the sleeve 733 is fixedly connected to one side of the driving wheel 734, and when the retractable plate 740 displaces, the driving wheel 734 is driven by the second clamping plate 741 to slide along the outside of the rotating shaft 731, so that the driving wheel 734 and the driven wheel 742 are always perpendicular to each other, and the driving wheel 734 and the driven wheel 742 are prevented from being dislocated, and the transmission belt 735 is prevented from tilting and falling off.
As shown in fig. 9, the plate fastening frame 75 includes an outer frame 750, two magnetic attraction limiting clamps 752 oppositely arranged are movably mounted on the inner side of the outer frame 750, a double-threaded rod 753 is movably mounted between the two magnetic attraction limiting clamps 752, and two sets of reverse threads are symmetrically formed on the outer sides of the double-threaded rod 753; the accessible rotates two threaded rod 753 control two magnetic attraction spacing clamps 752 intervals that the subtend set up to satisfy the centre gripping work to not unidimensional PCB board.
As shown in fig. 10 and 11, each of the two magnetic-attraction limiting clamps 752 includes an outer clamp plate 720 and an inner clamp plate 722, the top of the inner clamp plate 722 is movably inserted into the top of the outer clamp plate 720, a clamping block 721 is fixedly mounted on the top of the outer clamp plate 720, a slot 751 is formed on the top of the outer frame 750, and the top of the clamping block 721 is movably inserted into the inner side of the slot 751; the PCB is placed between the lower surface of the inner plate 722 and the upper surface of the outer plate 720 to be clamped, and the locking block 721 is inserted into the insertion groove 751 to slide, so as to limit both ends of the outer plate 720, thereby preventing the outer plate 720 from tilting and being locked when sliding along the inner side of the bezel 750.
As shown in fig. 11 and 11, a plurality of first magnetic blocks 724 are uniformly and fixedly mounted at the bottom of the outer clamping plate 720, a plurality of second magnetic blocks 723 are uniformly and fixedly mounted at the top of the inner clamping plate 722, the first magnetic blocks 724 and the second magnetic blocks 723 are oppositely mounted in different polarities, and after the PCB is placed between the lower surface of the inner clamping plate 722 and the upper surface of the outer clamping plate 720, the inner clamping plate 722 and the outer clamping plate 720 can clamp and fasten the inner PCB due to the magnetic attraction between the first magnetic blocks 724 and the second magnetic blocks 723.
The use method and the working principle of the device are as follows: this glue dispensing equipment uses ultraviolet curing UV glue, in the upper and lower both ends of the rotary conveying mechanism 3 that is used for the PCB board that the circulation transport needs the point to glue to handle, there are first ultraviolet curing banks 6, the second ultraviolet curing banks 8 respectively fixed mounting, it produces the ultraviolet ray and is used for the solidification of UV glue, and be provided with front point gum machine structure 4 and reverse point gum machine structure 5 respectively at the both sides top of rotary conveying mechanism 3, both are used for carrying out the point to glue to the tow sides of PCB board respectively and handle, and the PCB board is inboard in the one end of the panel tilting mechanism 7 of centre gripping in the rotary conveying mechanism 3 outside, panel tilting mechanism 7 portability PCB board is in the top of workstation 2 when encircleing the displacement, carry out the upset work, thereby can carry out the front point under mechanism 4 and glue the back, when following panel tilting mechanism 7 displacement to reverse point gum machine structure 5 under, the upset work of 180 degrees is accomplished, during, the UV glue after the PCB board front point glued has been accomplished the solidification under the common irradiation of first ultraviolet curing banks 6, second ultraviolet curing banks 8.
In the PCB feeding process, the magnetic suction limiting clamp 752 interval of the two opposite sets is controlled by rotating the double-threaded rod 753, so that the clamping work of PCB boards with different sizes is met. The PCB is placed between the lower surface of the inner plate 722 and the upper surface of the outer plate 720 to be clamped, and the locking block 721 is inserted into the insertion groove 751 to slide, so as to limit both ends of the outer plate 720, thereby preventing the outer plate 720 from tilting and being locked when sliding along the inner side of the bezel 750. After the PCB is placed between the lower surface of the inner clamping plate 722 and the upper surface of the outer clamping plate 720, the inner clamping plate 722 and the outer clamping plate 720 can be clamped and fastened by the magnetic attraction between the first magnetic block 724 and the second magnetic block 723.
The loading position of the PCB is the front position of the supporting plate 30, and when the rotating end 31 drives the plate turnover mechanism 7 outside to rotate counterclockwise around the axis of the supporting plate 30, and the supporting plate 30 is used as the starting point, the gear 736 at the bottom of the turnover component 73 of the plate turnover mechanism 7 is located inside the first annular groove 32. Firstly, the gear 736 is not deflected when the first ring groove 32 is not provided with the teeth 33 in the counterclockwise direction of the displacement of 270-360 degrees, the clamp 74 and the PCB clamped and connected with the inner side of the clamp will not be deflected, and the horizontal placement shape is displaced to the right below the front dispensing mechanism 4 for dispensing; when the PCB is moved to the position under the front dispensing mechanism 4 for dispensing, the lead screw motor 48 can adjust the height of the first clamping plate 481 on one side of the lead screw 480 by controlling the lead screw 480, so that the Z-axis position adjustment of the glue injection end 47 fixedly mounted on one side of the first clamping plate 481 can be completed quickly, the Y-axis adjustment of the glue injection end 47 can be changed along with the belt 42, and the rotation of the belt 42 is driven by the second servo motor 41. After the glue injection pump 44 is started, the UV glue is injected into the glue injection end 47 through the glue guide tube 46 under pressure, and then is dispensed at the dispensing position on the surface of the bottom PCB board, and finally is cured after being irradiated by the first ultraviolet curing lamp group 6 and the second ultraviolet curing lamp group 8.
After the front side of the PCB is dispensed with glue, the rotating end 31 is continuously opened, so that the board turnover mechanism 7 continuously rotates counterclockwise with the axis of the supporting plate 30 as the rotating axis, at this time, teeth 33 connected with the gear 736 are formed between 0 to 270 degrees inside the first annular groove 32, during the process that the turnover component 73 of the board turnover mechanism 7 rotates along with the rotating end 31, the gear 736 is pushed by the teeth 33 to drive the rotating shaft and the driving wheel 731 fixed on the outer side thereof to rotate, so that the driven wheel 742 connected with the driving wheel 734 through the transmission belt 735 rotates, and the driven wheel 742 drives the clamp 74 and the PCB clamped on the inner side thereof through the connecting rod 743 to turn over, thereby completing the clamp after 180 degrees turnover, and making the back side of the PCB directly under the reverse side dispensing mechanism 5, so as to perform dispensing treatment.
The tooth pitch of the teeth 33 uniformly arranged in the 0-180 degree part inside the first ring groove 32 is twice of the tooth pitch of the teeth 33 in the 180-270 degree part inside the first ring groove, and the gear 736 is in non-complete matching connection when positioned in the 0-180 degree part inside the first ring groove 32; when the gear 736 is located in the first annular groove 32 at 180-270 degrees, the assembly is completely engaged, so that when the turnover component 73 of the plate turnover mechanism 7 continues rotating and displacing 180-270 degrees along with the rotating end 31, the rotation speed of the gear 736 is twice of that of the front end, and the reverse side of the PCB can be quickly turned over for 180 degrees along a rotation path of one fourth of a circle, so that the front side of the PCB returns to the initial position to perform blanking.
In the dispensing process, the telescopic cylinder 738 controls the telescopic length of the telescopic plate 740 to control the clamp 74 and the PCB inside the clamp to move along the X axis during the dispensing operation under the front dispensing mechanism 4 and the back dispensing mechanism 5, and the front dispensing mechanism 4/the back dispensing mechanism 5 are matched to complete the three-axis relative position of X, Y, Z between the PCB and the glue injection end 47 during the dispensing operation. Meanwhile, when the retractable plate 740 is displaced, the second clamping plate 741 can drive the driving wheel 734 to slide along the outer side of the rotating shaft 731, so that the driving wheel 734 and the driven wheel 742 are always kept perpendicular to each other, and the driving belt 735 is prevented from being tilted and falling off due to the misalignment between the driving wheel 734 and the driven wheel 742.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a point gum machine of PCB board constructs, includes equipment panel beating (1) and bottom fixed mounting's workstation (2), its characterized in that: a first ultraviolet curing lamp group (6) is fixedly mounted at the top of the inner side of the equipment sheet metal (1), a concave shell piece (20) is fixedly mounted on the upper surface of the workbench (2), a second ultraviolet curing lamp group (8) is fixedly mounted at the top of the concave shell piece (20), a rotary conveying mechanism (3) is movably mounted at the inner side of the concave shell piece (20), and a front surface glue dispensing mechanism (4) and a back surface glue dispensing mechanism (5) are fixedly mounted on two sides of the upper surface of the workbench (2) respectively;
four plate turnover mechanisms (7) are uniformly and movably mounted on the outer side of the top of the rotary conveying mechanism (3), the rotary conveying mechanism (3) comprises a support plate (30) and a rotary end head (31) movably inserted into the top of the axis of the support plate (30), the bottom of the rotary end head (31) is movably connected with a first servo motor (36), a limiting frame (37) is fixedly mounted on the outer side of the first servo motor (36), the top of the limiting frame (37) is fixedly mounted with the bottom of the support plate (30), a first annular groove (32) and a second annular groove (35) are concentrically arranged on the top of the support plate (30) from outside to inside in sequence, the axes of the first annular groove (32) and the second annular groove (35) are positioned on the same straight line with the axis of the support plate (30), a group of continuous teeth (33) are arranged around 270 degrees in an anticlockwise mode for a starting point under a front glue dispensing mechanism (4) on the inner side of the first annular groove (32), and a group of teeth (33) are arranged in an anticlockwise mode that the tooth pitch is twice as the tooth pitch between 180 and between the tooth pitch between the tooth and 270 degrees clockwise;
each of the four plate turnover mechanisms (7) comprises a fixed frame (70), a turnover assembly (73), a clamp (74) and a plate fastening frame (75), one end of the fixed frame (70) is fixedly mounted on the outer side of the top of the rotating end head (31), the other end of the fixed frame (70) is fixedly mounted on one end of the turnover assembly (73), and the other end of the turnover assembly (73) is movably mounted on one side of the plate fastening frame (75) through the clamp (74); the turnover component (73) comprises an underframe (730), a transmission belt (735), a driven wheel (742) and a connecting rod (743), wherein a rotating shaft (731) is movably inserted into one side of the underframe (730), a driving wheel (734) is fixedly clamped and connected to the outer side of one end of the rotating shaft (731), a gear (736) is fixedly clamped and connected to the other end of the rotating shaft (731), the bottom of the gear (736) is meshed and connected with teeth (33), the outer side of the driving wheel (734) is movably connected with the outer side of the driven wheel (742) through the transmission belt (735), and the axis center of the driven wheel (742) is fixedly clamped and connected with one side of the clamp (74) through the connecting rod (743).
2. The dispensing mechanism of PCB board of claim 1, characterized in that: mechanism (4) is glued to front side point and mechanism (5) is glued to reverse side point all includes horizontal pole (40), second servo motor (41), keysets (43), montant (45), lead screw (480), lead screw motor (48), the outside fixed mounting of the one end of horizontal pole (40) and second servo motor (41), belt (42) have been cup jointed in the one end activity of second servo motor (41), one side movable mounting of keysets (43) and montant (45) is passed through to one side of belt (42), the opposite side movable mounting of montant (45) has first cardboard (481), one side fixed mounting of first cardboard (481) has injecting glue end (47), the opposite side of cardboard (481) passes through lead screw (480) and lead screw motor (48) movable mounting.
3. The dispensing mechanism of a PCB board of claim 2, characterized in that: the infrared positioning device (430) is fixedly mounted at the bottom of one end of the adapter plate (43), the glue injection pump (44) is fixedly mounted at the top end of the vertical rod (45), the glue guide tube (46) is communicated with the bottom end of the glue injection pump (44), and the bottom end of the glue guide tube (46) is communicated with the top end of the glue injection end (47).
4. The dispensing mechanism of PCB board of claim 1, characterized in that: be equipped with guide rail (34) between first annular (32), second annular (35), the bottom movable mounting of mount (70) has bracing piece (71), the bottom movable mounting of bracing piece (71) has slider (72), the bottom of slider (72) and the top slidable mounting of guide rail (34).
5. The dispensing mechanism of PCB board of claim 1, characterized in that: a limiting roller (732) is movably mounted at the bottom of one end of the bottom frame (730), and the bottom of the limiting roller (732) is slidably mounted with the inner side of the second annular groove (35).
6. The dispensing mechanism of PCB board of claim 1, characterized in that: the top fixed mounting of mount (70) has riser (737), the top fixed mounting of riser (737) has roof (739), the top slidable mounting of roof (739) has expansion plate (740), one side bottom swing joint of expansion plate (740) has telescopic cylinder (738).
7. The dispensing mechanism of PCB board of claim 6, characterized in that: a second clamping plate (741) is fixedly installed at the bottom of the other side of the telescopic plate (740), a sleeve (733) is movably clamped at the bottom of the second clamping plate (741), and the inner side of the sleeve (733) is movably installed with the outer side of the rotating shaft (731).
8. The dispensing mechanism of a PCB board of claim 1, characterized in that: plate fastening frame (75) include frame (750), the inboard movable mounting of frame (750) has two subtend settings inhale spacing clamp (752), two movable mounting has double-threaded rod (753) between the spacing clamp (752) is inhaled to magnetism, two sets of reverse screw threads have been seted up to double-threaded rod (753) outside symmetry.
9. The dispensing mechanism of PCB board of claim 8, characterized in that: two limit clamp (752) are inhaled to magnetism all include outer splint (720) and interior splint (722), the top of interior splint (722) is pegged graft with the top activity of outer splint (720), the top fixed mounting of outer splint (720) has fixture block (721), slot (751) have been seted up at the top of frame (750), the inboard activity grafting of the top and slot (751) of fixture block (721).
10. The dispensing mechanism of PCB board of claim 9, wherein: the bottom of the outer clamping plate (720) is uniformly and fixedly provided with a plurality of first magnetic blocks (724), the top of the inner clamping plate (722) is uniformly and fixedly provided with a plurality of second magnetic blocks (723), and the first magnetic blocks (724) and the second magnetic blocks (723) are installed in opposite directions.
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| CN202210923970.3A CN115365071B (en) | 2022-08-02 | 2022-08-02 | Dispensing mechanism of PCB board |
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| CN202210923970.3A CN115365071B (en) | 2022-08-02 | 2022-08-02 | Dispensing mechanism of PCB board |
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| CN115365071B (en) | 2023-10-13 |
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