CN115365071B - Dispensing mechanism of PCB board - Google Patents
Dispensing mechanism of PCB board Download PDFInfo
- Publication number
- CN115365071B CN115365071B CN202210923970.3A CN202210923970A CN115365071B CN 115365071 B CN115365071 B CN 115365071B CN 202210923970 A CN202210923970 A CN 202210923970A CN 115365071 B CN115365071 B CN 115365071B
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- Prior art keywords
- plate
- pcb
- movably
- glue
- clamping plate
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Classifications
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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 dispensing mechanism of a PCB. The dispensing mechanism of the PCB comprises a device metal plate and a workbench fixedly mounted at the bottom of the device metal plate, a first ultraviolet curing lamp set is fixedly mounted at the top of the inner side of the device metal plate, a concave shell piece is fixedly mounted on the upper surface of the workbench, and a second ultraviolet curing lamp set is fixedly mounted at the top of the concave shell piece. The invention realizes the self-overturning and glue curing work of the PCB in the process of conveying, and the PCB is horizontally placed when the front and back glue dispensing work is carried out, so that the problems of sliding and dripping of the non-dried glue on the surface of the PCB are avoided, the glue dispensing efficiency and quality are improved, and the overturning state of the clamp holding the PCB is controlled by different tooth opening modes in the first annular groove so as to match the PCB to carry out the double-sided glue dispensing work in the glue dispensing work, and simultaneously, the PCB with different thickness can be rapidly clamped and fed by utilizing the action of magnetic attraction.
Description
Technical Field
The invention relates to the technical field of PCB processing, in particular to a 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, so that the use effect and the service life of the chip on the PCB of the electronic product can be well prolonged, the sensitive circuit board of some electronic equipment and some electronic components are effectively protected for a long time, and the PCB is waterproof, dustproof and anticorrosive.
For example, the Chinese patent application number is: the double-sided synchronous glue dispenser of CN107051826A comprises a conveying device for vertically supporting and longitudinally conveying a lamp panel, glue dispensing devices symmetrically arranged on two sides of the conveying device and a space moving platform, wherein the space moving platform comprises a lifting mechanism for driving the glue dispensing devices to lift and a transverse moving mechanism for respectively driving the glue dispensing devices on two sides of the conveying device to transversely and relatively move so as to dispense glue on two sides of the lamp panel. The device conveys the lamp panel by arranging the conveying device, the dispensing devices are respectively arranged at two sides of the conveying device, and the dispensing devices at two sides of the conveying device are symmetrically arranged at the same time; and the lifting mechanism is arranged to drive the glue dispensing devices to lift, and the transverse moving mechanism is arranged to drive the glue dispensing devices on two sides of the conveying device to move relatively, so that synchronous glue dispensing is carried out on two sides of the lamp panel on the conveying device, and the glue dispensing efficiency is improved.
In the prior art, in order to improve the dispensing efficiency of the PCB board needing double-sided dispensing operation, after the PCB board is horizontally or vertically placed, when two groups of dispensing mechanisms are adopted to respectively dispense the front and back sides of the PCB board, 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 drop under the action of self gravity, the glue injected on the two sides of the vertically placed PCB board can slide downwards due to self gravity, so that the dispensing precision is reduced, the problem of dispensing dislocation occurs, the protective performance of the finished PCB board is greatly reduced, particularly, ultraviolet curing UV glue under special curing conditions is required, and the curing conditions can be gradually solidified after ultraviolet lamp irradiation.
Disclosure of Invention
The invention aims to provide a dispensing mechanism of a PCB (printed circuit board) so as to solve the problems that in the prior art, in order to improve the dispensing working efficiency of the PCB which needs double-sided dispensing, after the PCB is horizontally or vertically placed, two groups of dispensing mechanisms are adopted to respectively dispense the front and back sides of the PCB, the existing glue for dispensing is fluid when being dispensed to the surface of the board, the glue on the back surface of the PCB placed on the water surface can drip under the action of self gravity, and the glue injected on the two sides of the vertically placed PCB can slide downwards due to self gravity, so that the dispensing precision is reduced, and the dispensing dislocation occurs, thereby greatly reducing the protective performance of the finished product of the PCB.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a point gum mechanism of PCB board, includes equipment panel beating and bottom fixed mounting's workstation, the inboard top fixed mounting of equipment panel beating has first ultraviolet curing lamp group, the upper surface fixed mounting of workstation has concave shell spare, and the top fixed mounting of concave shell spare has second ultraviolet curing lamp group, the inboard movable mounting of concave shell spare has rotary conveying mechanism, the upper surface both sides of workstation are fixed mounting respectively and are glued mechanism and reverse side point gum mechanism;
four plate overturning mechanisms are uniformly and movably arranged on the outer side of the top of the rotary conveying mechanism, the rotary conveying mechanism comprises a supporting plate and a rotary end head movably spliced at the top of the axis of the supporting plate, a first servo motor is movably connected to the bottom of the rotary end head, a limiting frame is fixedly arranged on the outer side of the first servo motor, the top of the limiting frame and the bottom of the supporting plate are fixedly arranged, a first annular groove and a second annular groove are sequentially and concentrically arranged on the top of the supporting plate from outside to inside, the axes of the first annular groove and the second annular groove are all in the same straight line with the axis of the supporting plate, a group of continuous teeth are arranged on the inner side of the first annular groove in a surrounding mode by taking the right side of the front dispensing mechanism as a starting point for 270 degrees in a anticlockwise encircling mode, and the tooth distance between 0-180 degrees of the anticlockwise teeth is twice of the tooth distance between 180-270 degrees clockwise;
the four plate overturning mechanisms comprise fixing frames, overturning assemblies, clamps and plate fastening frames, one end of each fixing frame is fixedly arranged on the outer side of the top of each rotating end, the other end of each fixing frame is fixedly arranged on one end of each overturning assembly, and the other end of each overturning assembly is movably arranged on one side of each plate fastening frame through each 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 at one side of the bottom frame, a driving wheel is fixedly clamped at the outer side of one end of the rotating shaft, a gear is fixedly clamped at the other end of the rotating shaft, the bottom of the gear is meshed with teeth, the outer side of the driving wheel is movably connected with the outer side of the driven wheel through the transmission belt, and the shaft center of the driven wheel is fixedly clamped at one side of the clamp through the connecting rod.
Preferably, the front surface dispensing mechanism and the reverse surface dispensing mechanism comprise a cross rod, a second servo motor, an adapter plate, a vertical rod, a screw rod and a screw rod motor, one end of the cross rod is fixedly mounted on the outer side of the second servo motor, one end of the second servo motor is movably sleeved with a belt, one side of the belt is movably mounted on one side of the vertical rod through the adapter plate, a first clamping plate is movably mounted on the other side of the vertical rod, a glue injection end is fixedly mounted on one side of the first clamping plate, and the other side of the clamping plate is movably mounted on the screw rod motor through the screw rod.
Preferably, the infrared locator is fixedly arranged at the bottom of one end of the adapter plate, the glue injection pump is fixedly arranged at the top end of the vertical rod, the bottom end of the glue injection pump is communicated with the glue guide pipe, and the bottom end of the glue guide pipe is communicated with the top end of the glue injection end.
Preferably, a guide rail is arranged between the first annular groove and the second annular groove, a support rod is movably arranged at the bottom end of the fixing frame, a sliding block is movably arranged at the bottom end of the support rod, and the bottom of the sliding block is slidably arranged at the top of the guide rail.
Preferably, a limiting roller is movably mounted at the bottom of one end of the bottom frame, and the bottom of the limiting roller is slidably mounted with the inner side of the second annular groove.
Preferably, the top fixed mounting of mount has the riser, the top fixed mounting of riser has the roof, the top slidable mounting of roof has the expansion plate, one side bottom swing joint of expansion plate has flexible cylinder.
Preferably, a second clamping plate is fixedly arranged 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 is movably arranged at the outer side of the rotating shaft.
Preferably, the plate fastening frame comprises an outer frame, two opposite magnetic attraction limiting clamps are movably mounted on the inner side of the outer frame, a double-threaded rod is movably mounted between the magnetic attraction limiting clamps, and two opposite threads are symmetrically formed on the outer side of the double-threaded rod.
Preferably, the two magnetic limiting clamps comprise an outer clamping plate and an inner clamping plate, the top of the inner clamping plate is movably inserted with the top of the outer clamping plate, a clamping block is fixedly arranged at the top of the outer clamping plate, a slot is formed in the top of the outer frame, and the top of the clamping block is movably inserted with the inner side of the slot.
Preferably, a plurality of first magnetic blocks are uniformly and fixedly arranged at the bottom of the outer clamping plate, a plurality of second magnetic blocks are uniformly and fixedly arranged at the top of the inner clamping plate, and the first magnetic blocks and the second magnetic blocks are oppositely arranged.
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 the PCB, the PCB is horizontally placed at one end inner side of the board overturning mechanism clamped at the outer side of the rotary conveying mechanism, the board overturning mechanism can carry the PCB to carry out circumferential displacement at the top of the workbench and simultaneously carry out overturning work, so that after the front side glue dispensing mechanism carries out front side glue dispensing, the board overturning mechanism is moved to the position right below the back side glue dispensing mechanism, the curing work of the front side glue dispensing is completed in the process, then 180-degree overturning is carried out for carrying out back side glue dispensing work, the PCB is horizontally placed in the process of carrying out the front side glue dispensing work, the problem that the undried glue slides and drips on the surface of the PCB is avoided, and the glue dispensing efficiency and the quality are improved.
2. In the invention, the tooth pitch of teeth uniformly arranged between 0 and 180 degrees at the inner side of the first annular groove is twice the tooth pitch of teeth between 180 and 270 degrees at the inner side of the first annular groove, and the gears are in incomplete fit connection when the gears are positioned between 0 and 180 degrees at the inner side of the first annular groove; when the gear 736 is positioned between 180-270 degrees on the inner side of the first annular groove 32 and is in complete meshing assembly, therefore, when the turnover assembly rotates for displacement of 180-270 degrees along with the rotating end, the rotating speed of the gear is twice as high as that of the front end, the rotating path of the gear is a quarter circle, the reverse turnover of the PCB can be rapidly completed for 180 degrees, the PCB returns to the initial position from the front side upwards to perform blanking work, and between 270-360 degrees anticlockwise, no tooth is arranged in the first annular groove, the gear is not contacted, the clamp and the PCB clamped on the inner side of the clamp cannot deflect, and the horizontal placement displacement is carried out under the front side dispensing mechanism 4 to perform dispensing treatment; after the front surface of the PCB is dispensed, the PCB rotates between 0-270 degrees on the inner side of the first annular groove 32, the gear is pushed by the 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 driving belt rotates, the driven wheel drives the clamp and the PCB clamped on the inner side of the clamp to turn over 180 degrees through the connecting rod, the back surface of the PCB is right under the reverse surface dispensing mechanism 5 so as to perform reverse surface dispensing treatment, and the turnover state of the clamp clamping the PCB is controlled by different tooth opening modes in the first annular groove so as to cooperate with the PCB to perform double surface dispensing operation in the dispensing operation.
3. In the invention, in the PCB feeding process, the PCB is placed between the lower surface of the inner clamping plate and the upper surface of the outer clamping plate for clamping, the inner clamping plate and the outer clamping plate can clamp and fasten the inner PCB by the action of magnetic attraction between the first magnetic block and the second magnetic block, and the PCB with different thickness can be rapidly clamped for feeding and discharging by the action of 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 FIG. 2 at A;
fig. 4 is a schematic top structure of a rotary conveying mechanism of a dispensing mechanism of a PCB board according to the present invention;
fig. 5 is a schematic diagram of the bottom structure of a rotary conveying mechanism of a dispensing mechanism of a PCB board according to the present invention;
fig. 6 is a schematic structural diagram of a board turnover mechanism of a dispensing mechanism of a PCB board according to the present invention;
fig. 7 is a schematic structural diagram of a turnover assembly of a dispensing mechanism of a PCB board according to the present invention;
fig. 8 is a schematic diagram of an installation structure of a board turnover mechanism of a dispensing mechanism of a PCB board according to the present invention;
fig. 9 is a schematic structural view of a board fastening frame of a dispensing mechanism of a PCB board according to the present invention;
fig. 10 is a schematic structural view of a magnetic attraction limiting clip of a dispensing mechanism of a PCB board according to the present invention;
fig. 11 is a structural cross-sectional view of a magnetic attraction limiting clamp of a dispensing mechanism of a PCB board of the present invention.
In the figure:
1. equipment metal plate;
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 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. a glue injection end; 48. a screw motor; 480. a screw rod; 481. a first clamping plate;
5. a reverse surface dispensing mechanism;
6. a first ultraviolet curing lamp set;
7. a plate overturning mechanism; 70. a fixing frame; 71. a support rod; 72. a slide block; 720. an outer clamping plate; 721. a clamping block; 722. an inner clamping plate; 723. a second magnetic block; 724. a first magnetic block; 73. a flip assembly; 730. a chassis; 731. a rotation shaft; 732. limiting idler wheels; 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 telescoping plate; 741. a second clamping plate; 742. driven wheel; 743. a connecting rod; 75. a plate fastening frame; 750. an outer frame; 751. a slot; 752. a magnetic limiting clamp; 753. a double threaded rod;
8. and a second ultraviolet curing lamp set.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, 2, 4, 5, 6, 7, and 8, the following are shown: the utility model provides a point gum mechanism of PCB board, including equipment panel beating 1 and its bottom fixed mounting's workstation 2, the inboard top fixed mounting of equipment panel beating 1 has first ultraviolet curing lamp group 6, the upper surface fixed mounting of workstation 2 has concave shell piece 20, and the top fixed mounting of concave shell piece 20 has second ultraviolet curing lamp group 8, the inboard movable mounting of concave shell piece 20 has rotatory conveying mechanism 3, the even movable mounting in top outside of rotatory conveying mechanism 3 has four panel tilting mechanisms 7, the upper surface both sides of workstation 2 are fixed mounting respectively and are glued mechanism 4 and reverse side point and glue mechanism 5; the ultraviolet curing UV glue is used in the glue dispensing equipment, the upper end and the lower end of the rotary conveying mechanism 3 for circularly conveying the PCB needing glue dispensing treatment are respectively fixedly provided with a first ultraviolet curing lamp group 6 and a second ultraviolet curing lamp group 8, ultraviolet rays are generated for curing the UV glue, the tops of the two sides of the rotary conveying mechanism 3 are respectively provided with a front glue dispensing mechanism 4 and a reverse glue dispensing mechanism 5, the front glue dispensing mechanism 4 and the reverse glue dispensing mechanism 5 are respectively used for carrying out glue dispensing treatment on the front and the back sides of the PCB, the PCB is clamped on the inner side of one end of the plate overturning mechanism 7 on the outer side of the rotary conveying mechanism 3, and the plate overturning mechanism 7 can carry the PCB to carry out overturning work while carrying out surrounding displacement on the top of the workbench 2, so that after the front glue dispensing mechanism 4 carries out front glue dispensing, the plate overturning mechanism 7 moves to the position under the reverse glue dispensing mechanism 5, 180-degree overturning work is completed, and during the period, the UV glue after the front glue dispensing of the PCB is completed under the common irradiation of the first ultraviolet curing lamp group 6 and the second ultraviolet curing lamp group 8.
Four plate turnover mechanisms 7 are uniformly and movably arranged 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 spliced at the top of the axis of the supporting plate 30, a first servo motor 36 is movably connected to the bottom of the rotary end head 31, a limiting frame 37 is fixedly arranged on the outer side of the first servo motor 36, and the top of the limiting frame 37 is fixedly arranged on the bottom of the supporting plate 30; the outer side of the bottom of the first servo motor 36 is fixedly arranged with the bottom of the supporting plate 30 through a limiting frame 37, and after the first servo motor 36 is started, the outer four plate turnover mechanisms 7 are driven to rotate and displace by taking the axis of the supporting plate 30 as a rotating shaft through the rotating end 31 at the top of the first servo motor 36.
The four plate overturning mechanisms 7 comprise a fixed frame 70, an overturning assembly 73, a clamp 74 and a plate fastening frame 75, one end of the fixed frame 70 is fixedly arranged on the outer side of the top of the rotary end head 31, the other end of the fixed frame 70 is fixedly arranged on one end of the overturning assembly 73, and the other end of the overturning assembly 73 is movably arranged 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 rotary end head 31 through a fixing frame 70 at one end of the plate turnover mechanism, and a clamp 74 at the other end of the plate turnover mechanism 7 is used for clamping the PCBs in batches.
The turnover assembly 73 comprises a chassis 730, a transmission belt 735, a driven wheel 742 and a connecting rod 743, wherein a rotating shaft 731 is movably inserted at one side of the chassis 730, a driving wheel 734 is fixedly clamped at the outer side of one end of the rotating shaft 731, a gear 736 is fixedly clamped at the other end of the rotating shaft 731, the bottom of the gear 736 is meshed with a tooth 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, the axle center of the driven wheel 742 is fixedly clamped with one side of a clamp 74 through the connecting rod 743, a first annular groove 32 and a second annular groove 35 are sequentially and concentrically arranged at the top of the supporting plate 30 from outside to inside, the axle centers of the first annular groove 32 and the second annular groove 35 are all on the same straight line with the axle center of the supporting plate 30, a group of continuous teeth 33 are arranged at the inner side of the first annular groove 32 in a counter-clockwise surrounding manner by 270 degrees with a starting point under the front dispensing mechanism 4, and the tooth spacing between the group of teeth 33 counter clockwise 0-180 degrees is twice the tooth spacing between the clockwise 180-270 degrees.
When the rotation end 31 drives the outer board turnover mechanism 7 to rotate anticlockwise with the axis of the support board 30 as the rotation axis and the support board 30 as the starting point, the gear 736 at the bottom of the turnover component 73 of the board turnover mechanism 7 is positioned at the inner side of the first annular groove 32, the anticlockwise displacement is 270-360 degrees firstly, the teeth 33 are not arranged in the first annular groove 32, the gear 736 is not deflected, the clamp 74 and the PCB clamped at the inner side of the clamp are not deflected, and the horizontal placement displacement is carried out under the front side dispensing mechanism 4 for dispensing treatment; when the front surface dispensing of the PCB is completed, the rotary end 31 is continuously opened, the plate turnover mechanism 7 continuously rotates anticlockwise by taking the axis of the supporting plate 30 as the rotation axis, at this time, teeth 33 connected with gears 736 are arranged between 0-270 degrees on the inner side of the first annular groove 32, in the process that the turnover component 73 of the plate turnover mechanism 7 follows the rotary end 31 to rotate, the gears 736 are pushed by the teeth 33 to drive the rotary shaft 731 and a driving wheel 734 fixed on the outer side thereof to rotate, so that driven wheels 742 connected with the driving wheel 734 through a transmission belt 735 rotate, the driven wheels 742 drive the clamp 74 and the PCB clamped on the inner side thereof to turn through a connecting rod 743, the reverse surface of the PCB is just under the reverse surface dispensing mechanism 5 so as to perform reverse surface dispensing treatment, the tooth 33 tooth distance uniformly arranged on the inner side of the first annular groove 32 is twice the tooth 33 tooth distance between 180-270 degrees on the inner side of the first annular groove, and the gears 736 are in non-complete fit connection when the inner side of the first annular groove 32 is positioned between 0-180 degrees; when the gear 736 is located between 180-270 degrees inside the first annular groove 32 and is in complete engagement assembly, therefore, when the turnover assembly 73 of the plate turnover mechanism 7 follows the rotary end 31 and continues to rotate for 180-270 degrees, the rotation speed of the gear 736 is twice as high as that of the front end, and the reverse turnover of the PCB board can be rapidly completed by 180 degrees by the rotation path of the gear 736 being a quarter circle, so that the front face of the PCB board returns to the initial position upwards to perform blanking work.
According to the illustration in fig. 3, the front dispensing mechanism 4 and the back dispensing mechanism 5 each comprise a cross bar 40, a second servo motor 41, an adapter plate 43, a vertical rod 45, a screw rod 480 and a screw rod motor 48, wherein one end of the cross bar 40 is fixedly mounted on the outer side of the second servo motor 41, one end of the second servo motor 41 is movably sleeved with a belt 42, 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 screw rod motor 48 through the screw rod 480. When the PCB is displaced to the position right below the front dispensing mechanism 4/the back dispensing mechanism 5 for dispensing, the screw motor 48 can adjust the height adjustment of the first clamping plate 481 on one side of the screw 480 by controlling the 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 rapidly 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 shown in fig. 3, an infrared positioner 430 is fixedly installed at the bottom of one end of the adapter plate 43, the infrared positioner 430 is used for precisely positioning the position of the PCB board so as to adjust the glue injection displacement of the glue injection end 47 at the top of the PCB board, a glue injection pump 44 is fixedly installed at the top end of the vertical rod 45, the bottom end of the glue injection pump 44 is communicated with a glue guide tube 46, 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 glue dispensing position on the surface of the PCB board at the bottom, and finally the UV glue is cured after being irradiated by the first ultraviolet curing lamp set 6 and the second ultraviolet curing lamp set 8.
According to the embodiment shown in fig. 4 and 6, a guide rail 34 is arranged between the first ring groove 32 and the second ring groove 35, a support rod 71 is movably arranged at the bottom end of the fixing frame 70, a sliding block 72 is movably arranged at the bottom end of the support rod 71, and the bottom of the sliding block 72 is slidably arranged with the top of the guide rail 34; when the plate turnover mechanism 7 rotates anticlockwise along the rotating end 31 on the upper surface of the supporting plate 30, the sliding block 72 also slides anticlockwise along the guide rail 34, and the supporting rod 71 supports the plate turnover mechanism 7 during displacement to prevent toppling.
According to 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 ring groove 35, and the limiting roller 732 slides in the second ring 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, so as to prevent the board turnover mechanism 7 from tilting and misplacement, and improve the stability of the PCB board during the conveying and dispensing process.
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 controls the telescopic length of the telescopic plate 740, so that the clamp 74 and the PCB inside the clamp can be controlled to displace along the X axis under the front dispensing mechanism 4 and the back dispensing mechanism 5 when dispensing, and the position of X, Y, Z triaxial relative between the PCB and the glue injection end 47 can be completed when dispensing by matching with the front dispensing mechanism 4/the back dispensing mechanism 5.
According to the illustration in fig. 7, 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 rotary shaft 731; when the sleeve 733 rotates along with the rotation shaft 731, the second clamping plate 741 is movably clamped with the outer side of the sleeve 733 all the time, one side of the sleeve 733 is fixedly connected with one side of the driving wheel 734, and when the telescopic plate 740 displaces, the driving wheel 734 can be driven by the second clamping plate 741 to slide along the outer side of the rotation shaft 731, so that the driving wheel 734 and the driven wheel 742 are always kept vertical, and the driving wheel 734 and the driven wheel 742 are prevented from being misplaced, so that the driving belt 735 is inclined and falls off.
According to the embodiment shown in fig. 9, the plate fastening frame 75 includes an outer frame 750, two opposite magnetic attraction limiting clips 752 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 clips 752, and two opposite threads are symmetrically formed on the outer side of the double-threaded rod 753; spacing of the two oppositely arranged magnetic attraction limiting clamps 752 can be controlled by rotating the double-threaded rod 753, so that clamping work of PCBs with different sizes is met.
According to the fig. 10 and 11, the two magnetic limiting clips 752 comprise an outer clamping plate 720 and an inner clamping plate 722, the top of the inner clamping plate 722 is movably inserted with the top of the outer clamping plate 720, a clamping block 721 is fixedly arranged at the top of the outer clamping plate 720, an inserting slot 751 is formed at the top of the outer frame 750, and the top of the clamping block 721 is movably inserted with the inner side of the inserting slot 751; the PCB board is placed between the lower surface of the inner clamping plate 722 and the upper surface of the outer clamping plate 720 to be clamped, and the clamping blocks 721 can be inserted into the slots 751 to slide, so that the two ends of the outer clamping plate 720 are limited, and the outer clamping plate 720 is prevented from being inclined and blocked when sliding along the inner side of the outer frame 750.
According to the embodiment shown in fig. 11 and 11, a plurality of first magnetic blocks 724 are uniformly and fixedly installed at the bottom of the outer clamping plate 720, a plurality of second magnetic blocks 723 are uniformly and fixedly installed at the top of the inner clamping plate 722, the first magnetic blocks 724 and the second magnetic blocks 723 are installed opposite to each other, and when a PCB board 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 board due to the magnetic attraction between the first magnetic blocks 724 and the second magnetic blocks 723.
The application method and the working principle of the device are as follows: the ultraviolet curing UV glue is used in the glue dispensing equipment, the upper end and the lower end of the rotary conveying mechanism 3 for circularly conveying the PCB needing glue dispensing treatment are respectively fixedly provided with a first ultraviolet curing lamp group 6 and a second ultraviolet curing lamp group 8, ultraviolet rays are generated for curing the UV glue, the tops of the two sides of the rotary conveying mechanism 3 are respectively provided with a front glue dispensing mechanism 4 and a reverse glue dispensing mechanism 5, the front glue dispensing mechanism 4 and the reverse glue dispensing mechanism 5 are respectively used for carrying out glue dispensing treatment on the front and the back sides of the PCB, the PCB is clamped on the inner side of one end of the plate overturning mechanism 7 on the outer side of the rotary conveying mechanism 3, and the plate overturning mechanism 7 can carry the PCB to carry out overturning work while carrying out surrounding displacement on the top of the workbench 2, so that after the front glue dispensing mechanism 4 carries out front glue dispensing, the plate overturning mechanism 7 moves to the position under the reverse glue dispensing mechanism 5, 180-degree overturning work is completed, and during the period, the UV glue after the front glue dispensing of the PCB is completed under the common irradiation of the first ultraviolet curing lamp group 6 and the second ultraviolet curing lamp group 8.
In the PCB feeding process, the distance between the two oppositely arranged magnetic attraction limiting clamps 752 can be controlled by rotating the double-threaded rod 753, so that clamping work of PCBs with different sizes is met. The PCB board is placed between the lower surface of the inner clamping plate 722 and the upper surface of the outer clamping plate 720 to be clamped, and the clamping blocks 721 can be inserted into the slots 751 to slide, so that the two ends of the outer clamping plate 720 are limited, and the outer clamping plate 720 is prevented from being inclined and blocked when sliding along the inner side of the outer frame 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 clamp and fasten the inner PCB due to the magnetic attraction between the first magnetic block 724 and the second magnetic block 723.
When the feeding position of the PCB board is the front end position of the supporting plate 30 and the rotating end 31 drives the outer board turnover mechanism 7 to rotate anticlockwise with the axis of the supporting plate 30 as the rotation axis and the supporting plate 30 as the starting point, the gear 736 at the bottom of the turnover component 73 of the board turnover mechanism 7 is located inside the first annular groove 32. Firstly, between 270-360 degrees of anticlockwise displacement, teeth 33 are not arranged in the first annular groove 32, so that the gears 736 are not deflected, the clamp 74 and a PCB clamped on the inner side of the clamp are not deflected, and the clamp is horizontally placed to be displaced to the position right below the front side dispensing mechanism 4 for dispensing; when the PCB is displaced to the position right below the front glue dispensing mechanism 4 for glue dispensing, the screw motor 48 can adjust the height adjustment of the first clamping plate 481 on one side of the screw 480 by controlling the 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 rapidly 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. After the glue injection pump 44 is started, the UV glue is injected into the glue injection end 47 through the glue guide pipe 46 in a pressurizing mode, then the UV glue is dispensed at a glue dispensing position on the surface of the bottom PCB, and finally the UV glue is cured after being irradiated by the first ultraviolet curing lamp set 6 and the second ultraviolet curing lamp set 8.
When the front surface dispensing of the PCB board is completed, the rotary end 31 is continuously opened, so that the board turnover mechanism 7 continuously rotates anticlockwise with the axis of the support plate 30 as the rotation axis, at this time, teeth 33 connected with gears 736 are formed between 0-270 degrees on the inner side of the first ring groove 32, and in the process that the turnover assembly 73 of the board turnover mechanism 7 follows the rotary end 31 to rotate, the gears 736 are pushed by the teeth 33 to drive the rotary shaft 731 and the driving wheel 734 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 board clamped on the inner side thereof to turn over through the connecting rod 743, so that the reverse surface of the PCB board is directly under the reverse surface dispensing mechanism 5 to perform reverse surface dispensing treatment.
The teeth 33 which are uniformly arranged on the inner side 0-180 degrees of the first annular groove 32 have twice the tooth pitch of the teeth 33 between 180-270 degrees of the inner side of the first annular groove, and the gears 736 are in incomplete matching connection when being positioned between 0-180 degrees of the inner side of the first annular groove 32; when the gear 736 is located between 180-270 degrees inside the first ring groove 32 and is in complete engagement assembly, therefore, when the turnover assembly 73 of the plate turnover mechanism 7 follows the rotating end 31 and continues to rotate for 180-270 degrees, the rotation speed of the gear 736 is twice as high as that of the front end, and the reverse turnover of the PCB board can be rapidly completed by 180 degrees by taking a quarter circle as the rotation path, so that the front face of the PCB board returns to the initial position upwards to perform blanking work.
In the dispensing process, the telescopic cylinder 738 can control the telescopic length of the telescopic plate 740, so that the clamp 74 and the PCB inside the telescopic plate can be controlled to be arranged below the front dispensing mechanism 4 and the back dispensing mechanism 5, X-axis displacement can be achieved when dispensing is performed, and the relative position of X, Y, Z triaxial between the PCB and the dispensing end 47 can be achieved when dispensing is performed by matching the front dispensing mechanism 4/the back dispensing mechanism 5. Meanwhile, when the expansion plate 740 is displaced, the second clamping plate 741 can drive the driving wheel 734 to slide along the outer side of the rotation shaft 731, so that the driving wheel 734 and the driven wheel 742 are always kept vertical, and the driving wheel 734 and the driven wheel 742 are prevented from being misplaced, so that the driving belt 735 is inclined and falls off.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (4)
1. The utility model provides a mechanism is glued to point of PCB board, includes equipment panel beating (1) and bottom fixed mounting's workstation (2), its characterized in that: the device comprises a workbench (2), wherein a first ultraviolet curing lamp set (6) is fixedly arranged at the top of the inner side of the device metal plate (1), a concave shell (20) is fixedly arranged on the upper surface of the workbench (2), a second ultraviolet curing lamp set (8) is fixedly arranged at the top of the concave shell (20), a rotary conveying mechanism (3) is movably arranged at the inner side of the concave shell (20), and a front surface dispensing mechanism (4) and a back surface dispensing mechanism (5) are respectively and fixedly arranged at two sides of the upper surface of the workbench (2);
four plate overturning 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 spliced on the top of the axis of the supporting plate, a first servo motor (36) is movably connected to the bottom of the rotary end head (31), a limiting frame (37) is fixedly mounted on the outer side of the first servo motor (36), a first annular groove (32) and a second annular groove (35) are sequentially and concentrically formed in the top of the supporting plate (30) from outside to inside, the axes of the first annular groove (32) and the second annular groove (35) are all in the same straight line with the axis of the supporting plate (30), a group of continuous teeth (33) are formed in a counterclockwise encircling arrangement mode by taking the right lower portion of the adhesive dispensing mechanism (4) as a starting point, and the tooth spacing between the counterclockwise 0-180 degrees of the teeth (33) is twice of the tooth spacing between counterclockwise 180-270 degrees;
the four plate overturning mechanisms (7) comprise fixing frames (70), overturning assemblies (73), clamps (74) and plate fastening frames (75), one end of each fixing frame (70) is fixedly arranged outside the top of each rotating end head (31), the other end of each fixing frame (70) is fixedly arranged with one end of each overturning assembly (73), and the other end of each overturning assembly (73) is movably arranged with one side of each plate fastening frame (75) through each clamp (74); the turnover assembly (73) comprises a bottom frame (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 bottom frame (730), a driving wheel (734) is fixedly clamped at the outer side of one end of the rotating shaft (731), a gear (736) is fixedly clamped at the other end of the rotating shaft (731), the bottom of the gear (736) is in meshed connection with a tooth (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 shaft center of the driven wheel (742) is fixedly clamped with one side of a clamp (74) through the connecting rod (743);
the front side dispensing mechanism (4) and the back side dispensing mechanism (5) comprise a cross rod (40), a second servo motor (41), an adapter plate (43), a vertical rod (45), a screw rod (480) and a screw rod motor (48), one end of the cross rod (40) is fixedly arranged on the outer side of the second servo motor (41), one end of the second servo motor (41) is movably sleeved with a belt (42), one side of the belt (42) is movably arranged on one side of the vertical rod (45) through the adapter plate (43), a first clamping plate (481) is movably arranged on the other side of the vertical rod (45), a glue injection end (47) is fixedly arranged on one side of the first clamping plate (481), and the other side of the clamping plate (481) is movably arranged with the screw rod motor (48) through the screw rod (480);
an infrared positioner (430) is fixedly arranged at the bottom of one end of the adapter plate (43), a glue injection pump (44) is fixedly arranged at the top end of the vertical rod (45), a glue guide pipe (46) is communicated with the bottom end of the glue injection pump (44), and the bottom end of the glue guide pipe (46) is communicated with the top end of the glue injection end head (47);
a guide rail (34) is arranged between the first annular groove (32) and the second annular groove (35), a supporting rod (71) is movably arranged at the bottom end of the fixing frame (70), a sliding block (72) is movably arranged at the bottom end of the supporting rod (71), and the bottom of the sliding block (72) is slidably arranged with the top of the guide rail (34);
a limiting roller (732) is movably arranged at the bottom of one end of the underframe (730), and the bottom of the limiting roller (732) is slidably arranged inside the second annular groove (35);
a vertical plate (737) is fixedly arranged at the top of the fixing frame (70), a top plate (739) is fixedly arranged at the top of the vertical plate (737), a telescopic plate (740) is slidably arranged 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 plate is characterized in that a second clamping plate (741) is fixedly arranged 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 arranged at the outer side of the rotary shaft (731).
2. The dispensing mechanism of a PCB board of claim 1, wherein: the plate fastening frame (75) comprises an outer frame (750), two opposite magnetic limiting clamps (752) are movably mounted on the inner side of the outer frame (750), double threaded rods (753) are movably mounted between the magnetic limiting clamps (752), and two groups of opposite threads are symmetrically formed on the outer side of each double threaded rod (753).
3. The dispensing mechanism of a PCB board of claim 2, wherein: the two magnetic limiting clamps (752) comprise an outer clamping plate (720) and an inner clamping plate (722), the top of the inner clamping plate (722) is movably connected with the top of the outer clamping plate (720) in an inserting mode, a clamping block (721) is fixedly arranged at the top of the outer clamping plate (720), an inserting groove (751) is formed in the top of the outer frame (750), and the top of the clamping block (721) is movably connected with the inner side of the inserting groove (751) in an inserting mode.
4. A dispensing mechanism for a PCB according to claim 3, wherein: the bottom of outer splint (720) is even fixed mounting has a plurality of first magnetic path (724), the top of interior splint (722) is even fixed mounting has a plurality of second magnetic path (723), first magnetic path (724) and second magnetic path (723) are opposite to the installation.
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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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| CN115365071A CN115365071A (en) | 2022-11-22 |
| CN115365071B true CN115365071B (en) | 2023-10-13 |
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| CN115365071A (en) | 2022-11-22 |
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