CN110918374A - Ultra-micro precise glue dispensing mechanism driven by giant magnetostriction - Google Patents
Ultra-micro precise glue dispensing mechanism driven by giant magnetostriction Download PDFInfo
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- CN110918374A CN110918374A CN201911127144.2A CN201911127144A CN110918374A CN 110918374 A CN110918374 A CN 110918374A CN 201911127144 A CN201911127144 A CN 201911127144A CN 110918374 A CN110918374 A CN 110918374A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 152
- 239000003292 glue Substances 0.000 title claims abstract description 83
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000003860 storage Methods 0.000 claims abstract description 30
- 230000007704 transition Effects 0.000 claims description 43
- 229910052721 tungsten Inorganic materials 0.000 claims description 36
- 239000010937 tungsten Substances 0.000 claims description 36
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000003321 amplification Effects 0.000 abstract description 69
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 69
- 238000006073 displacement reaction Methods 0.000 abstract description 29
- 239000000463 material Substances 0.000 abstract description 12
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 22
- 229910003460 diamond Inorganic materials 0.000 description 17
- 239000010432 diamond Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 13
- 239000000243 solution Substances 0.000 description 13
- 230000033001 locomotion Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000002146 bilateral effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
- B05C3/12—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length
- B05C3/125—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length the work being a web, band, strip or the like
-
- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
-
- 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
-
- 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
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
- B05C3/12—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length
- B05C3/15—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length not supported on conveying means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/04—Constructional details
- H02N2/043—Mechanical transmission means, e.g. for stroke amplification
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
本发明属于精密驱动和超微量点胶的领域，涉及一种超磁致伸缩驱动的超微量精密点胶机构。超磁致伸缩驱动的超微量精密点胶机构，超磁致伸缩棒两端与放大杠杆的短端面连接，放大杠杆的长端面与菱形放大机构连接，菱形放大机构的上端与固定架连接，菱形放大机构下端与夹紧机构连接，夹紧机构与钨丝一端连接，钨丝另一端插入储胶桶。本发明是基于超磁致伸缩材料为核心的超微量精密点胶机构，能够实现皮升甚至飞升级的超微量点胶。通过两级放大机构将超磁致伸缩棒的驱动位移放大后，驱动钨丝穿过装有胶液的储胶桶，实现微量点胶。
The invention belongs to the fields of precision driving and ultra-micro dispensing, and relates to a super-micro precision dispensing mechanism driven by giant magnetostriction. The ultra-micro precision dispensing mechanism driven by giant magnetostriction, the two ends of the giant magnetostrictive rod are connected with the short end face of the magnifying lever, the long end face of the magnifying lever is connected with the rhombus amplifying mechanism, the upper end of the rhombus amplifying mechanism is connected with the fixing frame, the rhombus The lower end of the amplifying mechanism is connected with the clamping mechanism, the clamping mechanism is connected with one end of the tungsten wire, and the other end of the tungsten wire is inserted into the glue storage barrel. The invention is an ultra-micro precision dispensing mechanism based on the giant magnetostrictive material as the core, and can realize the ultra-micro dispensing of picoliters or even flying upgrades. After the driving displacement of the giant magnetostrictive rod is amplified by the two-stage amplification mechanism, the tungsten wire is driven to pass through the glue storage barrel containing the glue to realize micro-dispensing.
Description
The technical field is as follows:
the invention belongs to the field of precision driving and ultramicro dispensing, and relates to an ultramicro precision dispensing mechanism driven by giant magnetostriction.
Background art:
the micro-dispensing technology and method in micro-coupling/sealing engineering mainly perform the operations of absorption, transfer and distribution on micro-liquid, and are widely applied in the fields of life science, micro-fluidic chips, micro-electronic packaging, surface mounting, rapid manufacturing, inertial confinement nuclear fusion experiments and the like. At present, there are two methods, a contact method and a non-contact method, in the contact method, a dispensing head guides a glue solution to contact a dispensing surface for a period of time, and separates from a dispensing needle head by virtue of the viscous force between the glue solution and a substrate, thereby forming a glue spot on the substrate; in the non-contact method, a pressurizing device is adopted to pressurize the glue solution to atomize (or drop) the glue solution and obtain certain kinetic energy to spray the glue solution to the glue dispensing surface, and the relative position of a nozzle and the glue dispensing surface is generally kept unchanged in the glue dispensing process. The contact dispensing method mainly includes a large-scale type (multi-needle transfer printing technology, screen printing), a time/pressure type, a stop valve type, a spiral pump type, a piston pump type (or a positive displacement type), and the like according to a method of extruding a fluid, and the non-contact dispensing method mainly includes a mechanical jet type. In recent years, with the miniaturization of products, the demand for technical precision is improved, the use environment is complicated, and the like, higher requirements are put forward on the micro dispensing technology, the existing micro dispensing technology is difficult to simultaneously meet the comprehensive requirements of small glue spot diameter, wide glue solution applicable viscosity range and high-speed dispensing, and particularly, the micro dispensing technology is used for optical fiber (125um) butt joint and picoliter (1 pL-10 pL) in the fields of MEMS (micro-electromechanical systems) part (10um-100um) assembly and communication-12L) and fei liter (1fL ═ 10)-15L) level connection sealing, etc. the glue consumption is sub-picoliter and fly-lifting, and the existing trace glue dispensing method is difficult to meet the requirements. The key point for realizing micro dispensing is to drive the colloid to generate precise micro displacement motion.
The shear type piezoelectric micro-jet device is designed in 2006 with the highest price on the assumption of electronic research of the Chin university of science and technology, the actuating wall is simplified into an elastic beam model, the jet process of fluid under the action of pulse voltage is simulated and analyzed, and an equation of the driving voltage and the fluid motion displacement is obtained. In 2007, Hyun Kyu Suh et al, university of Hanyang, Korea, developed a piezoelectrically actuated diesel injector that utilizes electrostriction of a piezoelectric stack to control axial movement of a piston. The device has less injection delay time than the traditional electromagnetic valve and high working frequency. At present, for the research of the ultra-micro dispensing mechanism, the ultra-micro dispensing mechanism using the micro-displacement of the giant magnetostrictive material as the driving is not reported.
The invention content is as follows:
the purpose of the invention is as follows:
in order to overcome the technical problems, the invention provides a super-micro precise dispensing mechanism which takes a giant magnetostrictive material as a core element and can realize pico-liter or even femto-liter super-micro dispensing. After the driving displacement of the giant magnetostrictive rod is amplified by the two-stage amplification mechanism, the tungsten filament is driven to penetrate through the glue storage barrel filled with glue solution, and ultramicro glue dispensing is realized.
The technical scheme is as follows:
the ultra-micro precise dispensing mechanism driven by giant magnetostriction is characterized in that two ends of a giant magnetostriction rod are connected with the short end face of an amplification lever, the long end face of the amplification lever is connected with a rhombic amplification mechanism, the upper end of the rhombic amplification mechanism is connected with a fixing frame, the lower end of the rhombic amplification mechanism is connected with a clamping mechanism, the clamping mechanism is connected with one end of a tungsten filament, and the other end of the tungsten filament is inserted into a glue storage barrel.
Further, the right-hand member of cuboid mount is equipped with the coil holder, the coil is installed on the coil holder, pass the giant magnetostrictive rod in the middle of the coil, the both ends of giant magnetostrictive rod are connected respectively through transition cap and the short terminal surface of amplifying the lever right-hand member, the long terminal surface of amplifying the lever left end is connected with rhombus amplification mechanism through sliding plate mounting bracket and sliding plate respectively, rhombus amplification mechanism upper end is connected with the support frame of mount left end, the lower extreme of rhombus amplification mechanism is connected with clamping mechanism upper end through transition cylinder, the transition cylinder passes auxiliary connecting rod and is connected with the mount, the upper end of clamping mechanism lower extreme clamp tight tungsten filament, the lower extreme of tungsten filament inserts the storage and glues the bucket, it is connected with the mount through the dead lever to store.
Furthermore, the amplifying lever of the scissor structure is symmetrical left and right, and a semicircular groove is arranged on the center line of the inner surface of the short end surface of the amplifying lever; a circular through hole is formed in the center of the section of the amplifying lever, and the circular through hole is arranged on a cylindrical bulge of the U-shaped support frame on the fixing frame; a cylindrical bump is arranged on the central axis of the upper surface of the long end surface.
Further, the cylindrical convex block of the long end face of the amplification lever is inserted into the arc-shaped through hole of the sliding plate mounting frame and the annular through hole of the sliding plate, the upper surface center of the sliding plate mounting frame is provided with a square boss, the upper surface center of the square boss is provided with a cylindrical thread bulge, the horizontal center of the bottom surface of the sliding plate mounting frame is provided with a front and back through trapezoidal through groove, the trapezoidal through groove is connected with the sliding plate in a sliding manner, and the upper surface of the sliding plate mounting frame is provided with two symmetrical arc-shaped through holes.
Furthermore, the front and the back of the sliding plate mounting frame are respectively connected with the sliding plate in a sliding manner through a trapezoidal through groove, a through trapezoidal key is arranged on the upper surface of the sliding plate with the L-shaped structure, and the trapezoidal key is mounted in the trapezoidal through groove of the sliding plate mounting frame; one side of the upper end surface of the sliding plate is provided with a vertical annular through hole; the cylindrical convex block on the upper end surface of the amplifying lever penetrates through the annular through hole of the sliding plate and the arc-shaped through hole of the sliding plate mounting frame; the bottom end of the sliding plate is of an inverted trapezoidal structure, a vertical annular groove is processed in the center of the bottom end of the sliding plate, and a cylindrical key of the connecting wheel is inserted into the annular groove.
Furthermore, the centers of the left side surface and the right side surface of the diamond amplifying mechanism are respectively provided with a stress plane, and the center of the stress plane is provided with a cylindrical through hole; one end of the connecting wheel with threads penetrates through the cylindrical through hole of the diamond amplifying mechanism, and the center lines of the connecting wheel and the cylindrical through hole are superposed and connected through a bolt; a rectangular boss is processed at the center of the upper surface of the diamond amplifying mechanism, and a cylindrical mounting hole is processed at the center of the rectangular boss; the lower surface of the rhombus amplifying mechanism is provided with a rectangular boss, and the center of the lower surface of the rectangular boss is provided with a cylindrical mounting hole.
Furthermore, the transition cylinder is of a cylindrical structure with central symmetry, and a cylindrical convex body with threads is processed at the center of the upper end of the transition cylinder; the convex body passes through a cylindrical mounting hole on the lower surface of the rhombic amplifying mechanism, and the central lines of the convex body and the cylindrical mounting hole are on the same vertical line and are tightly connected through a bolt; a threaded mounting hole is formed in the center of the bottom end face of the transition cylinder; the spring sleeve of cylindrical structure is in transition cylindrical outside, and the spring up end contacts with the lower surface of rhombus mechanism of amplification, and the terminal surface contacts with auxiliary connecting rod upper surface under the spring.
Furthermore, the clamping mechanism is of a horn-shaped structure, a threaded cylinder is arranged at the center of the upper end face of the clamping mechanism, and the threaded cylinder penetrates through the auxiliary connecting rod and is installed in a threaded installation hole of the transition cylinder; the outer surface of the upper end of the clamping mechanism is sleeved with a sleeve with a thread at the upper end, and the thread in the sleeve is matched with the thread on the cylindrical outer surface of the clamping mechanism; the bottom end of the clamping mechanism is provided with three equally-spaced and forked clamping sheets.
Furthermore, the upper end of a tungsten needle with a conical lower end is arranged in three clamping sheets of the clamping mechanism, the central line of the tungsten needle is superposed with the central line of the clamping mechanism, and the lower end of the tungsten needle is inserted into the glue storage barrel.
Further, the glue storage barrel is of a bilaterally symmetrical conical structure, the middle part of the glue storage barrel is of a thin-wall square structure, and two conical thin-wall pipes are processed at the center of the bottom surface of the square structure; a round bulge is processed at the top end of the square structure, a round through hole is processed at the center of the round bulge, and a thin-wall round tube is processed around the round through hole; a thin-wall circular pipe with threads on the outer surface is processed at the center of one side face of the square structure; the circular ring pipe penetrates through a fixed rod on the fixed frame, the central lines of the circular ring pipe and the fixed rod are on the same straight line, and the circular ring pipe and the fixed rod are screwed up through bolts; one end of the circular tube is externally connected with a glue solution conveying system.
The advantages and effects are as follows:
the invention relates to an ultra-micro precise dispensing mechanism driven by giant magnetostriction; has the following advantages:
(1) due to the magnetostrictive characteristic of the giant magnetostrictive material, the giant magnetostrictive material can generate precise micro displacement and larger output force when a magnetic field is applied externally, and the displacement is amplified by the composite amplifying mechanism, so that the requirement of precise dispensing on the displacement precision can be ensured, the requirement on the displacement stroke can be ensured, and thus, picoliter or even flying upgrade ultra-micro dispensing can be realized.
(2) The invention adopts a composite amplifying mechanism, and utilizes an amplifying lever and a rhombic amplifying mechanism to effectively amplify the displacement generated by the giant magnetostrictive rod. The amplification times of the amplification lever are high, the displacement of the diamond amplification mechanism after amplification can be transmitted linearly, the amplification times can be guaranteed through the combined amplification, the linear transmission of the displacement after amplification can be guaranteed, and therefore accurate driving of the tungsten filament is achieved.
(3) The displacement of the motion of the end part after the amplification of the lever is arc-shaped, and after the transmission of the sliding plate, the arc-shaped motion of the end part of the amplification lever can be effectively converted into linear motion, so that the rhombic amplification mechanism is driven in a linear mode. Meanwhile, the annular groove at the bottom of the sliding plate ensures the linear motion of the rhombic amplification mechanism.
Description of the drawings:
FIG. 1 is a perspective view of an ultra-micro precise dispensing mechanism driven by giant magnetostriction;
FIG. 2 is an enlarged schematic view of the lever and its left slide plate mechanism;
FIG. 3 is a partial schematic view of a super magnetostrictive driven ultramicro precision dispensing mechanism;
FIG. 4 is a schematic view of a slide plate mounting bracket and slide plate connection arrangement;
FIG. 5 is an enlarged view of the coil and coil holder in partial position;
FIG. 6 is a front view of the holder;
FIG. 7 is a top view of the holder;
FIG. 8 is a schematic view of a cylindrical giant magnetostrictive rod;
FIG. 9 is a schematic view of a coil;
FIG. 10 is a front view of the transition cap;
FIG. 11 is a top view of the transition cap;
FIG. 12 is an enlarged left side view of the lever;
FIG. 13 is an enlarged top plan view of the lever;
FIG. 14 is a front view of the slide mount;
FIG. 15 is a left side view of the slide mount;
FIG. 16 is a top view of the slide plate mounting bracket;
FIG. 17 is a front view of the slide plate;
FIG. 18 is a left side view of the slide plate;
FIG. 19 is a top view of the slide plate;
FIG. 20 is a front view of the fifth wheel;
FIG. 21 is a left side view of the fifth wheel;
FIG. 22 is a perspective view of a diamond-shaped enlarged mechanism;
FIG. 23 is a front view of a diamond-shaped enlarged mechanism;
FIG. 24 is a top view of a diamond enlarged mechanism;
FIG. 25 is a top view of a transition cylinder;
FIG. 26 is a left side view of the transition cylinder;
FIG. 27 is a schematic view of a spring;
FIG. 28 is a front view of the clamping mechanism;
FIG. 29 is a top view of the clamping mechanism;
FIG. 30 is a front view of the sleeve;
FIG. 31 is a top view of the sleeve;
FIG. 32 is a schematic view of a tungsten wire;
FIG. 33 is a schematic view of a glue cartridge;
FIG. 34 is a front view of the glue cartridge;
FIG. 35 left side view of the glue cartridge;
FIG. 36 is a super depth of field map for a dispensing experiment using a 20 micron tungsten filament;
fig. 37 is a super depth of field map of a dispensing experiment using a 70 micron tungsten wire.
Description of reference numerals:
1-a fixed frame, 101-a coil base, 102-a supporting frame, 103-a U-shaped support, 104-a coil base supporting frame, 105-an auxiliary connecting rod, 106-a fixed rod, 2-a coil, 3-a super magnetostrictive rod, 4-a transition cap, 5-an amplification lever, 501-a long end face, 502-a short end face, 6-a sliding plate mounting frame, 7-a sliding plate, 8-a connecting wheel, 9-a diamond amplification mechanism, 10-a transition cylinder, 11-a spring, 12-a clamping mechanism, 13-a sleeve, 14-a tungsten wire and 15-a glue storage barrel.
The specific implementation mode is as follows:
the invention is further described below with reference to the accompanying drawings:
when the giant magnetostrictive material is under the action of an external magnetic field, the material generates a magnetostrictive effect to cause the giant magnetostrictive rod to stretch, so that the giant magnetostrictive rod can realize a precise micro-displacement driving process. On the basis, the micro displacement of the giant magnetostrictive rod is sequentially amplified through displacement amplifying levers at two ends of the giant magnetostrictive rod and a diamond amplifying mechanism, a tungsten filament is driven to penetrate through a glue storage barrel filled with glue solution, and ultra-micro dispensing is realized through the comprehensive action of the adhesive force and the surface tension of the glue solution.
The invention relates to a super-micro precise dispensing mechanism driven by giant magnetostriction, which takes columnar giant magnetostriction materials as core elements. The working principle of the invention is as follows: the super-magnetostrictive precise dispensing mechanism driven by super magnetostriction is integrally of a cuboid structure and has a bilateral symmetry structure, the super magnetostriction rods are bilaterally and symmetrically arranged on the inner side axis of the coil, and two ends of each super magnetostriction rod are in close contact with a circular groove on the inner surface of the short end face of the scissor type amplification lever through transition caps. The central axes of the coil, the giant magnetostrictive rod, the transition cap and the short end of the amplifying lever are superposed. The long-end bump of the amplification lever penetrates through the annular through hole in the sliding plate and the arc-shaped through hole in the sliding plate mounting frame, the cylindrical threaded bulge at the upper end of the sliding plate mounting frame penetrates through the cylindrical mounting hole at the upper end of the rhombic amplification mechanism, the through hole of the support frame 102 on the fixing frame, and the central lines of the three coincide and are fixed through bolts. The sliding plate is mounted in the trapezoidal key groove of the sliding plate mounting frame through the trapezoidal key on the upper surface. The cylindrical sliding rod of the connecting wheel is arranged in the annular groove of the sliding plate, the threaded end of the connecting wheel penetrates through the cylindrical mounting hole on the side face of the rhombic amplification mechanism, the central lines of the cylindrical sliding rod and the cylindrical mounting hole are overlapped, and the cylindrical sliding rod and the cylindrical mounting hole are connected with the rhombic amplification mechanism through bolts. The outer surface of the upper end of the diamond-shaped amplification mechanism is in close contact with the lower bottom surface of the support frame 102, the inner surface of the upper end of the diamond-shaped amplification mechanism is in close contact with the upper surface of the sliding plate mounting frame, the central lines of the diamond-shaped amplification mechanism, the sliding plate mounting frame and the sliding plate mounting frame are overlapped and are in close connection through bolts. The connecting rod with threads at the upper end of the transition cylinder penetrates through a cylindrical mounting hole in the center of the lower end face of the rhombic amplification mechanism, and the central lines of the connecting rod and the cylindrical mounting hole are superposed and are tightly connected through bolts. The spring is sleeved outside the transition cylinder, the central lines of the spring and the transition cylinder are superposed, the upper end of the spring is in contact with the lower surface of the rhombic amplification mechanism, and the lower end of the spring is in contact with the upper surface of the auxiliary connecting rod. The round hole with the threads at the lower end of the transition cylinder is tightly connected with the threaded cylinder at the upper end of the clamping mechanism, the inner surfaces of three clamping pieces at the lower end of the clamping mechanism are tightly contacted with the outer surface of the upper end of the tungsten filament and are fixed in the clamping mechanism through the sleeve, the center of the round hole at the lower surface of the diamond amplifying mechanism is ensured, and the central axis of the clamping mechanism and the axis of the tungsten filament are on the same axis. The tungsten filament penetrates through the glue storage barrel arranged on the fixed rod of the fixed frame, and the central line of the tungsten filament is superposed with the central axis of the glue storage barrel.
As shown in figures 1 and 2, in the ultra-micro precise dispensing mechanism driven by giant magnetostriction, two ends of a giant magnetostriction rod 3 are connected with the short end face of an amplification lever 5, the long end face of the amplification lever 5 is connected with a diamond amplification mechanism 9, the upper end of the diamond amplification mechanism 9 is connected with a fixed frame 1, the lower end of the diamond amplification mechanism 9 is connected with a clamping mechanism 12, the clamping mechanism 12 is connected with one end of a tungsten filament 14, and the other end of the tungsten filament 14 is inserted into a glue storage barrel 15.
As shown in fig. 3, 4 and 5, a coil holder 101 is arranged at the right end of a rectangular fixing frame 1, a coil 2 is installed on the coil holder 101, a giant magnetostrictive rod 3 penetrates through the middle of the coil 2, two ends of the giant magnetostrictive rod 3 are in close contact with a semicircular groove of an amplifying lever 5 through a transition cap 4, the long end face of the amplifying lever 5 is connected with a rhombic amplifying mechanism 9 through a sliding plate mounting frame 6, a sliding plate 7 and a connecting wheel 8 respectively, the upper end of the rhombic amplifying mechanism 9 is connected with a supporting frame 102 of the fixing frame 1, the lower end of the rhombic amplifying mechanism 9 is connected with the upper end of a clamping mechanism 12 through a transition cylinder 10, the clamping mechanism 12 clamps the upper end of a tungsten filament 14 through a sleeve 13, the lower end of the tungsten filament 14 is inserted into a glue storage barrel 15, and the glue storage barrel 15 is connected with.
As shown in fig. 6 and 7, the entire structure of the fixing frame 1 is a rectangular structure that is symmetrical to the left and right. The bottom surface and the left surface of mount 1 are the cuboid structure, are equipped with U-shaped support 104, U-shaped support 103 from the right side to left side in proper order in the inboard top edge of right flank, and U-shaped support 104 is equipped with the arch of a cuboid in the center department of crossbeam, and bellied upper surface processing has a semicircular slot, is coil holder 101 promptly, coil 2 and coil holder 101 phase-match. The U-shaped support frame 103 is provided with a cross beam at the bottom of the inner side surfaces of the two beams, and a cylindrical protrusion is arranged at the center of the cross beam. Two cross beams which are equal in length and symmetrical are arranged on the central axis of the left side face at a certain distance from the top end, the support frame 102 and the auxiliary connecting rod 105 are arranged from top to bottom in sequence, a concave cross beam is welded on the bottom face of the right end of the support frame 102, and a round hole is drilled in the center of the concave cross beam. The auxiliary connecting rod 105 is a rectangular cantilever beam which is arranged at a certain distance from the lower surface of the top end beam and is in bilateral symmetry and has an equidistant rectangle, and a circular through hole is formed at a certain distance from the other end surface of the rectangular cantilever beam. Similarly, a rectangular cantilever beam is also machined at a distance from the lower surface of the rectangle to form the fixing rod 106. A round through hole is processed at the horizontal center of the fixing rod 106, a round thin tube with threads on the outer surface of the side surface of the rubber storage cylinder 15 penetrates through the round through hole at the center of the fixing rod 106, the center lines of the round thin tube and the fixing rod are overlapped, and the round thin tube is screwed through a bolt.
As shown in fig. 8, the super magnetostrictive rod 3 is a cylindrical structure, the super magnetostrictive rod 3 is installed in a circular hole at the center of the coil 2, the center line of the super magnetostrictive rod is overlapped with the center line of the coil 2, and two ends of the super magnetostrictive rod 3 are respectively in close contact with the circular hole at the center of the transition cap 4.
As shown in fig. 9, the coil 2 has a cylindrical structure, and a thin-walled groove on the outer surface of the coil 2 is used for winding a copper wire. The coil 2 is placed on the coil holder 101.
As shown in fig. 10 and 11, the transition cap 4 is a cylindrical structure, a round hole is punched in the center of one side of the transition cap 4, the giant magnetostrictive rod 3 can be installed in the round hole to be in close contact with the transition cap, a round cap is arranged on the other side of the transition cap 4 to be in close contact with a semicircular groove on the short end face of the amplifying lever 5, and the centers of the two are on the same straight line.
As shown in fig. 12 and 13, the amplification lever 5 of the scissor structure is bilaterally symmetrical, and a semicircular groove is formed on the center line of the inner surface of the short end surface 502 of the amplification lever 5; a circular through hole is formed in the center of the section of the amplifying lever 5 and is arranged on a cylindrical protrusion of the U-shaped support frame 103 on the fixing frame 1; a cylindrical projection is provided on the central axis of the upper surface of the long end surface 501.
As shown in fig. 14, 15 and 16, the cylindrical projection of the long end surface 501 of the amplification lever 5 is inserted into the arc-shaped through hole of the sliding plate mounting frame 6 and the annular through hole of the sliding plate 7, the sliding plate mounting frame 6 is provided with a square boss at the center of the upper surface of the rectangular parallelepiped, a cylindrical threaded boss is processed at the center of the upper surface of the square boss, a through trapezoidal through groove is processed at the horizontal center of the bottom surface of the sliding plate mounting frame 6, the trapezoidal through groove is slidably connected with the sliding plate 7, and two symmetrical arc-shaped through holes are processed on the upper surface of the sliding plate mounting frame 6.
As shown in fig. 17, 18 and 19, the sliding plate mounting frame 6 is slidably connected with the sliding plate 7 through a trapezoidal through groove, the upper surface of the sliding plate 7 with the L-shaped structure is provided with a through trapezoidal key, and the trapezoidal key is mounted in the trapezoidal through groove of the sliding plate mounting frame 6; the upper end surface of the sliding plate 7 is provided with a vertical annular through hole; the cylindrical projection of the long end surface 501 of the amplification lever 5 passes through the annular through hole of the sliding plate 7 and the arc-shaped through hole of the sliding plate mounting frame 6; the bottom end of the sliding plate 7 is of an inverted trapezoidal structure, a vertical annular groove is processed at the center of the bottom end, and the cylindrical key of the connecting wheel 8 is inserted into the annular groove.
As shown in fig. 20 and 21, the connecting wheel 8 has a cylindrical structure, one end of the connecting wheel 8 is provided with a small cylindrical protrusion with a thread, and the other end is provided with a cylindrical key which is arranged in an annular groove on the bottom surface of the sliding plate 7.
As shown in fig. 22, 23, and 24, the diamond enlargement mechanism 9 is a rhombus that is bilaterally symmetric. The centers of the left side surface and the right side surface of the rhombic amplifying mechanism 9 are respectively provided with a stress plane, and a cylindrical through hole is processed in the center of the stress plane; one end of the connecting wheel 8 with threads penetrates through the cylindrical through hole, the central lines of the connecting wheel and the cylindrical through hole are overlapped, and the connecting wheel and the cylindrical through hole are connected through a bolt; a rectangular boss is processed at the center of the upper surface of the diamond amplifying mechanism 9, and a cylindrical mounting hole is processed at the center of the rectangular boss. The lower surface of the diamond amplifying mechanism 9 is provided with a rectangular boss, and a cylindrical mounting hole is drilled in the center of the rectangular boss.
As shown in fig. 25 and 26, the transition cylinder 10 is a cylindrical structure with a symmetrical center, and a cylindrical threaded convex body is processed at the center of the upper end of the transition cylinder 10; the convex body passes through a cylindrical mounting hole on the bottom surface of the rhombic amplifying mechanism 9, and the central lines of the convex body and the cylindrical mounting hole are on the same vertical line and are tightly connected through a bolt; the center of the bottom end surface of the transition cylinder 10 is provided with a threaded mounting hole.
As shown in fig. 27, the spring 11 with a cylindrical structure is sleeved outside the transition cylinder 10, the center lines of the two coincide, the upper end face of the spring 11 is in contact with the bottom face of the rhombic amplification mechanism 9, and the lower end face of the spring 11 is in contact with the upper face of the auxiliary connecting rod 105.
As shown in fig. 28, 29, 30 and 31, the clamping mechanism 12 is of a trumpet-shaped structure, a threaded cylinder is arranged at the center of the upper end face of the clamping mechanism 12, and the threaded cylinder penetrates through the auxiliary connecting rod 105 and is installed in a threaded installation hole of the transition cylinder 10; a sleeve 13 with threads at the upper end is sleeved on the outer surface of the clamping mechanism 12, and the threads in the sleeve 13 are matched with the external threads in the middle of the clamping mechanism 12; the bottom end of the clamping mechanism 12 is provided with three equally-spaced and forked clamping sheets. The upper end of the tungsten needle 14 is inserted into the middle of the clamping piece, and the clamping mechanism 12 is clamped through the rotating sleeve 13, so that the tungsten needle is fixed.
As shown in fig. 32, the upper end of the tungsten filament 14 is cylindrical, the lower end is conical, the upper end of the tungsten filament 14 is installed in three clamping sheets of the clamping mechanism 12, the central line of the tungsten filament is overlapped with the central line of the clamping mechanism 12, and the lower end of the tungsten filament 14 is inserted into the glue storage barrel 15. The upper end of the tungsten wire 14 is mounted in three clamping sheets of the clamping mechanism 12, so that the central line of the tungsten wire is superposed with the central line of the clamping mechanism 12 and fixed by rotating a sleeve 13 at the outer end of the clamping mechanism 12.
As shown in fig. 33, 34, and 35, the glue storage barrel 15 is a tapered structure with bilateral symmetry, the middle part of the glue storage barrel 15 is a thin-walled square structure, and two tapered thin-walled tubes are processed at the center of the bottom surface of the square structure; a round bulge is processed at the top end of the square structure, a round through hole is processed at the center of the round bulge, and a thin-wall round tube is processed around the round through hole; a thin-wall circular pipe with threads on the outer surface is processed at the center of one side face of the square structure; the circular ring-shaped pipe passes through the fixing rod 106 on the fixing frame 1, the central lines of the fixing rod and the fixing rod are on the same straight line, and the fixing rod are screwed through bolts. One end of the circular tube is externally connected with a glue solution conveying system.
When the coil 2 is energized, a magnetic field is generated. When receiving the effect of external magnetic field, super magnetostrictive rod 3 can be because of the magnetostrictive effect, lead to super magnetostrictive rod 3 to extend 10 mu m, the extension volume of super magnetostrictive rod 3 can pass through both sides transition and emit 4 drive amplification levers, the magnification of amplification lever is 50 times, amplification lever 5 can carry out first step amplification with super magnetostrictive rod 3's drive displacement, be 500 mu m after the amplification, the displacement after will amplifying through cylindrical lug can be passed through to the long end 501 of amplification lever 5 and is transmitted the sliding plate 7 of installing on sliding plate mounting bracket 6, promote connecting wheel 8 rather than being connected. The annular groove at the bottom end of the sliding plate can ensure that the stress of the diamond amplification mechanism 9 is always positioned at the center, the amplification factor of the diamond amplification mechanism is 9.7 times through the secondary amplification of the diamond amplification mechanism 9, the displacement of the giant magnetostrictive rod is amplified to 4.85mm finally, and the amplified displacement can meet the driving condition. Since the top end of the diamond-shaped enlarging mechanism is fixed, the lower end drives the transition cylinder 10 to move. The spring 11 surrounding the outside of the transition cylinder 10 is to prevent the diamond-shaped amplification mechanism 9 from being deformed due to the gravity acting on the lower bottom surface of the diamond-shaped amplification mechanism 9. The transition cylinder 10 drives the clamping mechanism 12, the clamping mechanism 12 drives the tungsten filament 14, and the tungsten filament 14 is retracted to the glue storage barrel 15, so that one-time glue dipping is realized. When the glue dipping is finished, the input voltage of the coil 2 is changed, so that the giant magnetostrictive rod 3 contracts, the tungsten filament 14 moves downwards, glue dispensing is realized, when the tungsten filament 14 passes through the glue storage barrel 15, tiny glue drops are adsorbed at the tip of the tungsten filament 14, when the tip is close to the glue dispensing surface, the tiny glue drops at the tip are contacted with the glue dispensing surface, due to the interfacial tension between the glue dispensing surface and the glue drops, the tiny glue drops are coated on the glue dispensing surface, after the tip of the tungsten filament 14 leaves the glue dispensing surface, a part of the tiny glue drops are remained on the glue dispensing surface, ultramicro glue dispensing is realized, when the tip diameter of the tungsten filament is respectively 20 μm and 70 μm, the diameter of the dispensed glue spots is about 25 μm and 82 μm, the volume of the glue spots is about 182 femtoliters and 140 picoliters, and the glue spot experiment result is shown in fig. 36 and 37.
By changing the diameter of the tip of the tungsten wire 14, the amount of the glue solution adsorbed by the tip of the tungsten wire 14 is changed, so that the size of the glue spot can be controlled. When dispensing, the inlets at the upper and lower ends of the glue storage barrel 15 are in close contact with the tungsten filament 14, so that the whole glue storage barrel 15 is sealed, and at the moment, the external glue solution conveying system finishes one-time gluing to ensure that the glue amount in the glue storage barrel 15 is consistent, thereby ensuring the consistency of each dispensing.
The ultra-micro precise dispensing mechanism driven by giant magnetostriction can effectively amplify the stretching displacement of the giant magnetostriction rod through the composite amplification mechanism, thereby driving the tungsten filament to move up and down and realizing precise dispensing.
According to the magnetostrictive characteristic of the giant magnetostrictive material, the giant magnetostrictive material can generate precise micro displacement and larger output force under the action of an external magnetic field. The property of the giant magnetostrictive material can ensure the requirement of precise dispensing on micro displacement. The displacement generated by the giant magnetostrictive material is effectively amplified by utilizing the amplifying lever and the rhombic amplifying mechanism. The amplification times of the amplification levers are large, the displacement amplified by the rhombic amplification mechanism can be transmitted linearly, the amplification times and the linear transmission of the amplified displacement can be guaranteed by the combined amplification, and therefore the requirement on the displacement stroke is met. The sliding plate mechanism is the key of the invention, the displacement of the motion of the end part after the amplification of the amplification lever is arc-shaped, and after the transmission of the sliding plate mechanism, the arc-shaped motion of the end part of the amplification lever can be effectively converted into linear motion, so that the rhombic amplification mechanism is driven in a linear mode. Meanwhile, the annular key slot on the bottom surface of the sliding plate can also ensure the linear motion of the rhombic amplification mechanism.
Claims (10)
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