CN111889306A - Lever embedding and abutting method and structure of piezoelectric type liquid material extrusion device - Google Patents
Lever embedding and abutting method and structure of piezoelectric type liquid material extrusion device Download PDFInfo
- Publication number
- CN111889306A CN111889306A CN202010191978.6A CN202010191978A CN111889306A CN 111889306 A CN111889306 A CN 111889306A CN 202010191978 A CN202010191978 A CN 202010191978A CN 111889306 A CN111889306 A CN 111889306A
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- lever
- embedding
- sides
- cavity
- extrusion device
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- 239000011344 liquid material Substances 0.000 title claims abstract description 27
- 238000001125 extrusion Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 16
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008602 contraction Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- 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
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
Abstract
The invention relates to a lever embedding and abutting method and a structure of a piezoelectric type liquid material extrusion device, which comprises the following steps: the embedding structure of one of a piezoelectric actuator and a force application part of a lever or a supporting part and a supporting end of the lever is characterized in that one part which is embedded and abutted forms a convex embedding and abutting part, and the other part forms a concave embedding cavity; two first side edges extending backwards are formed at two sides of one end of the embedding and abutting part; two second side edges extending towards two sides of the embedding part are formed at two sides of one end of the embedding cavity; thereby making the linkage between the piezoelectric actuator and the lever more sensitive.
Description
Technical Field
The present invention relates to a lever engaging method and structure, and more particularly, to a lever engaging method and structure for a piezoelectric type liquid material extruding apparatus.
Background
A general liquid material extrusion device often retains a viscous liquid glue on a working object in one of a spraying, a spotting and a coating manner, and a wafer spraying, a spotting and a coating process used in the scientific and technological industry is often required to have high precision and high speed, so in recent years, such a liquid material extrusion device has been developed to improve the liquid material extrusion efficiency by adopting a piezoelectric driving manner; the piezoelectric actuator has small expansion and contraction amount, so that it needs one lever to amplify the displacement for indirect pressing and pushing one plunger to extrude liquid material.
Disclosure of Invention
In this prior art, under the repeated expansion and contraction operation of the piezoelectric actuator at high speed, the arc concave part of the end of the piezoelectric actuator corresponds to the arc convex part at the force application point of the lever, because the contact between the arc concave part and the arc convex part is performed with high precision, and the surface contact of the arc sliding of the contact surface is smooth, but long-term observation and test show that the friction retardation of the surface contact of the arc concave part of the end of the piezoelectric actuator and the arc convex part at the force application point of the corresponding lever still affects the sensitivity of the lever responding to the repeated expansion and contraction of the piezoelectric actuator at high speed, and has a negative effect of hindering the higher-speed plunger drive, and thus the improvement is still needed.
Therefore, an object of the present invention is to provide a lever fitting method for a piezoelectric type liquid material extruding apparatus, which makes the linkage between a piezoelectric actuator and a lever more sensitive.
Another object of the present invention is to provide a lever engagement structure of a piezoelectric type liquid material extruding apparatus, which makes the linkage between a piezoelectric actuator and a lever more sensitive.
Still another object of the present invention is to provide a structure for performing the lever abutting method of the piezoelectric liquid material extruding apparatus.
The lever embedding method of the piezoelectric type liquid material extrusion device comprises the following steps: the embedding structure of one of a piezoelectric actuator and a force application part of a lever or a supporting part and a supporting end of the lever is characterized in that one part which is embedded and abutted forms a convex embedding and abutting part, and the other part forms a concave embedding cavity; two first side edges extending backwards are formed at two sides of one end of the embedding and abutting part; two second side edges extending towards two sides of the embedding part are formed at two sides of one end of the embedding cavity.
According to another aspect of the present invention, a lever engaging structure of a piezoelectric type liquid material extruding apparatus, disposed between a piezoelectric actuator and a force applying portion of a lever or between a supporting member and a supporting end of a lever, comprises: one part forming a convex embedding part and the other part forming a concave embedding hole; the embedding part is provided with an end part, and two first side edges extending backwards are formed at two sides of the end part; the embedding cavity is provided with an end cavity, and two second side edges extending towards two sides of the embedding and abutting part are formed from two sides of the end cavity.
According to another aspect of the present invention, a lever engagement structure for a piezoelectric type liquid material extruding apparatus includes: the structure is used for executing the lever embedding method of the piezoelectric liquid material extruding device.
The lever embedding and abutting method and structure of the piezoelectric type liquid material extrusion device in the embodiment of the invention have the advantages that as the embedding and abutting structure of one of a piezoelectric actuator and a force application part of a lever or a supporting part and a supporting end of the lever is adopted, one part which is embedded and abutted forms a convex embedding and abutting part, and the other part forms a concave embedding cavity; the contact area between the piezoelectric actuator and the force application part of the lever or between the support and the support end of the lever is reduced, so that the swinging friction is relatively reduced, and the sensitivity of the lever in reaction can be increased.
Drawings
FIG. 1 is a schematic sectional view of a piezoelectric liquid material extruding apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of the arrangement of the lever, the piezoelectric actuator, the plunger, and the supporting base according to the embodiment of the present invention.
FIG. 3 is a schematic view of a butting structure according to an embodiment of the present invention.
FIG. 4 is a schematic diagram of another embodiment of the embedding structure in the embodiment of the invention.
FIG. 5 is a schematic diagram of a fitting structure according to another embodiment of the present invention.
FIG. 6 is a schematic diagram of a further embodiment of a butting structure according to the present invention.
FIG. 7 is a schematic diagram of a butting structure according to yet another embodiment of the present invention.
[ notation ] to show
A1 valve seat of A piezoelectric type liquid material extrusion device
A11 trimmer A12 piezoelectric actuator
A121 first piezoelectric actuator a122 second piezoelectric actuator
A13 lever A131 supporting end
A132 force resisting end A133 force applying part
A14 support member A15 plunger
A151 first plunger A1511 first elastic member
A152 second plunger A1522 second elastic piece
Liquid chamber seat A21 liquid chamber of A2
A23 valve mouth of A22 input pipe
B1 member with B-embedded abutting structure
End part of B111 of B11 embedded part
B112 first side B2 part
B21 Embedded Point B211 end Point
B212 second side B3 clearance space
L center axis R radius
r radius alpha angle
Alpha 1 inclination angle alpha 2 inclination angle
Angle of inclination of beta 1
Angle of inclination of beta 2
Detailed Description
Referring to fig. 1, a piezoelectric liquid material extruding device according to an embodiment of the present invention is shown in the drawings, wherein the piezoelectric liquid material extruding device a includes:
a valve seat A1, a piezoelectric actuator A12 finely adjusted by a fine adjusting piece A11 is arranged in the valve seat A1, a lever A13 is arranged below the piezoelectric actuator A12, a supporting end A131 of the lever A13 is arranged below a supporting piece A14, and the other resisting end A132 is arranged at the upper end of a plunger A15;
a liquid chamber seat A2 arranged below the valve seat A1, a liquid chamber A21 is arranged in the liquid chamber A21, liquid can be input from an input pipe A22 into the liquid chamber A21, a valve nozzle A23 is arranged below the liquid chamber A21, and the liquid in the liquid chamber A21 can be extruded out from the valve nozzle A23 by the extrusion of the plunger A15.
The piezoelectric actuator a12 includes a first piezoelectric actuator a121 and a second piezoelectric actuator a122 connected in series, wherein the upper second piezoelectric actuator a122 has a shorter length, and the lower first piezoelectric actuator a121 has a longer length; the plunger a15 includes a first plunger a151 seated in the valve seat A1, and a second plunger a152 seated in the fluid chamber a2, the first plunger a151 being held by a first resilient member a1511 against the force-resisting end a152 of the lever a13, the second plunger a152 being held by a second resilient member a1522 against the first plunger a 151.
Referring to fig. 2, a force application portion a143 between the supporting end a131 and the resisting end a132 of the lever a13 is abutted by the lower side of the piezoelectric actuator a12 to drive the lever a13, and the lever a13 swings with a portion of the supporting end a131 abutted by the supporting member a14 as a fulcrum, so that the resisting end a132 displaces and drives the plunger a 15; the interference mode of the lower part of the piezoelectric actuator a12 to the force application part a133 of the lever a13 is the same as the interference mode of the support piece a14 to the support end a131 of the lever a13, and an interference structure B is adopted for interference.
Referring to fig. 2 and 3, the engaging structure B is such that one of the engaging parts B1 (e.g. the force applying part a133 of the lever a 13) forms a protruding engaging part B11, and the other part B2 (e.g. the piezoelectric actuator a12) forms a recessed engaging cavity B21; the embedding structure B which is arranged below the piezoelectric actuator a12 and is abutted against the force application part a133 of the lever a13, or the embedding structure B which is abutted against the support end a131 of the lever a13 by the support member a14, the same holds true for the two; the following description will be made in terms of an embodiment in which the engaging portion B11 is disposed at the force application portion a133 of the lever a13 and the supporting end a131 of the lever a13, and the engaging hole B21 is disposed at the piezoelectric actuator a12 and the supporting end a131 of the lever a 13:
the embedding part B11 of the embedding and abutting structure B is provided with an end part B111 with arc shape and radius R, and two planar first side edges B112 extending backwards are formed from two sides of the end part B111; the embedding cavity B21 is provided with an arc-shaped end cavity B211 with the radius r, and a two-plane-shaped second side edge B212 extending towards the two sides of the embedding part B11 is formed from the two sides of the end cavity B211; the inclination angles α 1 and α 2 of the central axis L formed by connecting the centers of the first sides B112 of the two sides with the arc of the end B111 and the arc of the embedding hole B21 are equal, and the included angle α between the first sides B112 of the two sides is between ninety degrees and one hundred twenty degrees; the inclination angles β 1 and β 2 of the central axis L formed by connecting the second sides B212 on both sides with the arc centers of the end portions B111 and the arc centers of the embedding holes B21 are equal, and the included angle β between the second sides B212 on both sides is between about ninety degrees and one hundred twenty degrees; wherein, two sides of the arc-shaped outer edge of the end portion B111 of the engaging portion B11 respectively contact with the planar surfaces of the second side edge B212 at two sides of the end cavity B211 of the inserting cavity B21 in a point contact manner; the included angle beta is larger than the included angle alpha, and the radius R is larger than the radius R; a closed clearance interval B3 is formed between the arc-shaped inner edge of the end cavity B211 of the embedding cavity B21, the second side edges B212 at two sides and the arc-shaped outer edge of the end part B111 of the embedding part B11; the inner arc-shaped edge of the end cavity B211 is smaller than the outer arc-shaped edge of the end part B111.
Referring to fig. 4, in another embodiment of the insertion structure B of the present invention, the insertion portion B11 is disposed on the piezoelectric actuator a12 and the supporting end a131 of the lever a13, and the insertion cavity B21 is disposed on the force-applying portion a133 and the supporting member a14 of the lever a 13.
Referring to fig. 5, in another embodiment of the insertion structure B of the present invention, the insertion portion B11 is disposed on the piezoelectric actuator a12 and the supporting member a14, and the insertion cavity B21 is disposed on the force applying portion a133 of the lever a13 and the supporting end a131 of the lever a 13.
Referring to fig. 6, in another embodiment of the embedding and abutting structure B of the present invention, the first side B112 at two sides of the end B111 of the embedding and abutting portion B11 can be arc-concave.
Referring to fig. 7, in yet another embodiment of the embedding and abutting structure B of the present invention, the embedding and abutting portion B11 can be disposed on the force applying portion a133 of the lever a13 and the supporting end a131 of the lever a13, and the embedding cavity B21 is disposed on the piezoelectric actuator a12 and the supporting member a 14; the first side B112 of the engaging portion B11 on both sides of the end B111 can be arc-concave on one side and planar on the other side as shown by the supporting end a131 of the lever a 13.
In the lever embedding and abutting method and structure of the piezoelectric liquid material extrusion device, one of the embedding and abutting structures of the piezoelectric actuator and the force application part of the lever and the support part and the support end of the lever is that one part forms the convex embedding and abutting part and the other part forms the concave embedding cavity; the contact area between the piezoelectric actuator and the force application part of the lever or between the support and the support end of the lever is reduced, so that the swinging friction is relatively reduced, and the sensitivity of the lever in reaction can be increased.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims and all simple equivalent variations and modifications within the scope of the invention as described.
Claims (14)
1. A lever embedding and abutting method of a piezoelectric type liquid material extrusion device comprises the following steps:
the embedding structure of one of a piezoelectric actuator and a force application part of a lever or a supporting part and a supporting end of the lever is characterized in that one part which is embedded and abutted forms a convex embedding and abutting part, and the other part forms a concave embedding cavity; two first side edges extending backwards are formed at two sides of one end of the embedding and abutting part; two second side edges extending towards two sides of the embedding part are formed at two sides of one end of the embedding cavity.
2. The method of claim 1, wherein the engaging portion is disposed at the force applying portion of the lever and the supporting end of the lever, and the engaging cavity is disposed at the piezoelectric actuator and the supporting end of the lever.
3. The method of claim 1, wherein the engaging portion is disposed at the support end of the lever and the piezoelectric actuator, and the engaging cavity is disposed at the force applying portion of the lever and the support.
4. The method of claim 1, wherein the engaging portion is disposed on the piezoelectric actuator and the supporting member, and the engaging cavity is disposed on the force applying portion of the lever and the supporting end of the lever.
5. A lever embedding structure of a piezoelectric type liquid material extrusion device is arranged between a piezoelectric actuator and a force application part of a lever or between a supporting piece and a supporting end of the lever, and comprises: one part forming a convex embedding part and the other part forming a concave embedding hole; the embedding part is provided with an end part, and two first side edges extending backwards are formed at two sides of the end part; the embedding cavity is provided with an end cavity, and two second side edges extending towards two sides of the embedding and abutting part are formed from two sides of the end cavity.
6. The lever engagement structure of a piezoelectric type liquid material extrusion device as claimed in claim 5, wherein the first sides of the two sides of the end of the engagement portion are equal to the inclination angles α 1 and α 2 of the central axis formed by the end and the engagement cavity; the second side edges at two sides of the end cavity of the embedding cavity are equal to the inclination angle of the central axis formed by the end part and the embedding cavity.
7. The lever engagement structure of claim 5, wherein the angle α between the first sides of the two sides of the end of the engagement portion is between about ninety degrees and one hundred twenty degrees; an included angle beta between the second sides on both sides of the cavity end is between ninety degrees and one hundred twenty degrees; the included angle beta is larger than the included angle alpha.
8. The lever engagement structure of a piezoelectric type liquid extrusion device as claimed in claim 5, wherein the end of the engagement portion is arc-shaped with a radius R, the end cavity of the engagement portion is arc-shaped with a radius R, and the radius R is larger than the radius R.
9. The lever engagement structure for a piezoelectric type liquid extrusion device as claimed in claim 5, wherein both sides of the outer edge of the end portion of the engagement portion respectively contact the second side surfaces of both sides of the end cavity of the engagement portion in a point contact manner.
10. The lever engagement structure for a piezoelectric type liquid extrusion device as claimed in claim 5, wherein a closed clearance region is formed between the inner edge of the end cavity of the engagement cavity and the second side edges of the two sides thereof and the outer edge of the end portion of the engagement portion; the inner edge of the end cavity is smaller than the outer edge of the end part.
11. The lever engagement structure of a piezoelectric type liquid material extrusion device as claimed in claim 5, wherein the first sides of the two sides of the end of the engagement portion are one of planar and arc-concave.
12. The lever engagement structure of a piezoelectric liquid extrusion device as claimed in claim 5, wherein the engagement portion is disposed on the force application portion of the lever and the support end of the lever, and the engagement cavity is disposed on the piezoelectric actuator and the support.
13. The lever engagement structure of a piezoelectric type liquid extrusion device as claimed in claim 5, wherein the first side of the two sides of the end of the engagement portion is arc-concave on one side and planar on the other side.
14. A lever embedding structure of a piezoelectric type liquid material extrusion device comprises: the structure of the lever embedding method for the piezoelectric type liquid material extrusion device according to any one of claims 1 to 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW108115603 | 2019-05-06 | ||
| TW108115603A TWI716867B (en) | 2019-05-06 | 2019-05-06 | Lever embedding method and structure of piezoelectric liquid material extrusion device |
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| Publication Number | Publication Date |
|---|---|
| CN111889306A true CN111889306A (en) | 2020-11-06 |
| CN111889306B CN111889306B (en) | 2021-11-23 |
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| CN202010191978.6A Active CN111889306B (en) | 2019-05-06 | 2020-03-18 | Lever embedding and abutting method and structure of piezoelectric type liquid material extrusion device |
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| CN (1) | CN111889306B (en) |
| TW (1) | TWI716867B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115502035A (en) * | 2021-06-07 | 2022-12-23 | 万润科技股份有限公司 | Liquid chamber mechanism and liquid material extrusion device |
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| CN202070458U (en) * | 2011-04-20 | 2011-12-14 | 吴海源 | Novel glue dispensing valve |
| US20140361203A1 (en) * | 2009-09-21 | 2014-12-11 | Nordson Corporation | Pneumatically actuated liquid dispensing valve |
| CN104971840A (en) * | 2014-04-01 | 2015-10-14 | 万润科技股份有限公司 | Liquid material extrusion method and device |
| CN109382237A (en) * | 2017-08-08 | 2019-02-26 | 松下知识产权经营株式会社 | Coating nozzles head and liquid application device with the coating nozzles head |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022166A (en) * | 1975-04-03 | 1977-05-10 | Teledyne Industries, Inc. | Piezoelectric fuel injector valve |
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2019
- 2019-05-06 TW TW108115603A patent/TWI716867B/en active
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2020
- 2020-03-18 CN CN202010191978.6A patent/CN111889306B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140361203A1 (en) * | 2009-09-21 | 2014-12-11 | Nordson Corporation | Pneumatically actuated liquid dispensing valve |
| CN202070458U (en) * | 2011-04-20 | 2011-12-14 | 吴海源 | Novel glue dispensing valve |
| CN104971840A (en) * | 2014-04-01 | 2015-10-14 | 万润科技股份有限公司 | Liquid material extrusion method and device |
| CN109382237A (en) * | 2017-08-08 | 2019-02-26 | 松下知识产权经营株式会社 | Coating nozzles head and liquid application device with the coating nozzles head |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115502035A (en) * | 2021-06-07 | 2022-12-23 | 万润科技股份有限公司 | Liquid chamber mechanism and liquid material extrusion device |
| CN115502035B (en) * | 2021-06-07 | 2023-06-02 | 万润科技股份有限公司 | Liquid chamber mechanism and liquid material extrusion device |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI716867B (en) | 2021-01-21 |
| CN111889306B (en) | 2021-11-23 |
| TW202041780A (en) | 2020-11-16 |
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