CN113578697B - Injector for point conductive silver paste - Google Patents
Injector for point conductive silver paste Download PDFInfo
- Publication number
- CN113578697B CN113578697B CN202110838043.7A CN202110838043A CN113578697B CN 113578697 B CN113578697 B CN 113578697B CN 202110838043 A CN202110838043 A CN 202110838043A CN 113578697 B CN113578697 B CN 113578697B
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- China
- Prior art keywords
- needle cylinder
- cylinder
- silver paste
- push rod
- syringe
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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
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/015—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with pneumatically or hydraulically actuated piston or the like
Abstract
The invention discloses a point conductive silver paste injector, comprising: a needle cylinder; the needle head is fixed at the bottom end of the needle cylinder and is provided with a slurry outlet communicated with the needle cylinder; the piston rod comprises a push rod positioned in the needle cylinder, a piston head positioned at the bottom end of the push rod and in sealing contact with the cylinder wall of the needle cylinder, and a screw rod positioned at the top end of the push rod and connected with a push rod ball, wherein the top end of the screw rod is positioned outside the needle cylinder and is fixedly provided with a handle; the fixing piece is fixedly connected with the needle cylinder, a threaded hole penetrating through the threaded rod is formed in the fixing piece, and the axis of the threaded hole is collinear with the axis of the needle cylinder. According to the invention, the stroke of the piston head can be precisely controlled by controlling the rotation radian of the screw rod, so that the air pressure in the needle cylinder can be precisely controlled, and finally the slurry outlet amount of the conductive silver slurry can be precisely controlled, so that the use is saved, the waste of the conductive silver slurry is reduced, the cost is reduced, and the environmental pressure is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a syringe for point-conducting silver paste.
Background
Main screen products such as COG (Chip On Glass, i.e. chips are directly bound On Glass) or FOG (FPC On Glass) and the like need to be connected with the polarizer and the surface of the liquid crystal Glass by conductive silver paste so as to play a role in releasing static electricity.
And in the project trial production stage, staff in a trial production line adopts a syringe filled with conductive silver paste to manually spot the silver paste. However, the stroke of a push rod of a common injector cannot be effectively and accurately controlled, excessive force is applied by staff during operation, so that excessive air pressure residues in the syringe are caused, and the residual air pressure in the syringe needs to be continuously released after a small amount of sample points of silver paste. So that the silver paste can flow out of the needle head continuously until the residual air pressure in the needle cylinder is released. The extra silver paste does not continue to dot the main screen product, so that the cost is increased, and the environmental pressure is increased when the extra silver paste is treated.
Disclosure of Invention
The invention discloses a point-conduction silver paste injector which is used for solving the problem that the conductive silver paste is easy to waste in the prior art.
In order to solve the problems, the invention adopts the following technical scheme:
provided is a syringe for dot conductive silver paste, comprising:
a needle cylinder;
the needle head is fixed at the bottom end of the needle cylinder and is provided with a slurry outlet communicated with the needle cylinder;
the piston rod comprises a push rod positioned in the needle cylinder, a piston head positioned at the bottom end of the push rod and in sealing contact with the cylinder wall of the needle cylinder, and a screw rod positioned at the top end of the push rod and connected with the push rod ball, wherein the top end of the screw rod is positioned outside the needle cylinder and is fixedly provided with a handle;
the fixing piece is fixedly connected with the needle cylinder, a threaded hole penetrating through the screw rod is formed in the fixing piece, and the axis of the threaded hole is collinear with the axis of the needle cylinder.
Optionally, the mounting is including being equipped with the screw hole and perpendicular the roof that the cylinder axis extends and be located the roof both ends and follow two curb plates that the cylinder axis extends, wherein two the bottom of curb plate all is equipped with inwards extend and with the fixed connecting plate of cylinder.
Optionally, an annular boss protruding outwards is arranged at the top end of the needle cylinder, and the two connecting plates are fixed on the bottom surface of the annular boss.
Optionally, a pin extending along the axis of the syringe is arranged between the annular boss and the connecting plate, wherein the pin is in interference fit with the annular boss and the connecting plate.
Optionally, the outer terminal surface of annular boss is the ring form, wherein two curb plate butt in the outer terminal surface of annular boss.
Optionally, the needle cylinder and the annular boss are of an integrally formed structure.
Optionally, the top plate, the side plate and the connecting plate are of an integrally formed structure.
Optionally, a gap is left between the push rod and the cylinder wall of the needle cylinder.
Optionally, the ratio of the sum of the lengths of the push rod and the piston head to the length of the screw is 1:4-5.
Optionally, the handle is a butterfly handle.
The technical scheme adopted by the invention can achieve the following beneficial effects:
by controlling the rotation radian of the screw rod, the stroke of the piston head can be precisely controlled, so that the air pressure in the needle cylinder can be precisely controlled. Therefore, according to the quantity of the trial production samples, the slurry outlet quantity of the conductive silver slurry can be accurately controlled every time a certain handle angle is rotated, the use is saved, the waste of the conductive silver slurry is reduced, the cost is reduced, and the environmental pressure is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments are briefly described below to form a part of the present invention, and the exemplary embodiments of the present invention and the description thereof illustrate the present invention and do not constitute undue limitations of the present invention. In the drawings:
FIG. 1 is a schematic perspective view of a syringe according to an embodiment of the present invention;
FIG. 2 is a side view of a syringe according to an embodiment of the present disclosure;
fig. 3 is a cross-sectional view A-A of fig. 2.
Wherein, the following reference numerals are specifically included in the accompanying drawings in fig. 1-3:
a needle cylinder-1; needle head-2; a piston rod-3; a fixing member (4); a handle-5; a pin-6; an annular boss-11; a push rod-31; a piston head-32; screw-33; a threaded hole-41; a top plate-42; a side plate-43; and a connecting plate-44.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments 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.
As shown in fig. 1 to 3, the syringe for spot conductive silver paste of the present invention comprises a barrel 1, a needle 2, a piston rod 3 and a fixing member 4. The needle cylinder 1 is made of colloid material, is cylindrical, and is internally provided with a containing cavity for containing conductive silver paste. The needle head 2 comprises a connecting part detachably connected with the needle cylinder 1 and a metal needle fixed on the connecting part, and a slurry outlet communicated with the needle cylinder 1 is arranged in the connecting part and the metal needle. The piston rod 3 includes a push rod 31, a piston head 32 and a screw 33, and the bottom end of the push rod 31 is connected to the piston head 32 and the top end is ball-connected to the screw 33. After the piston rod 3 is put into the syringe 1, the push rod 31 is positioned in the syringe 1, the piston head 32 is in sealing contact with the wall of the syringe 1, the screw 33 extends out of the syringe 1, and the handle 5 is fixed at the top end. The fixing member 4 is fixedly connected with the cylinder 1 and is provided with a threaded hole 41 having an axis collinear with the axis of the cylinder 1, and the screw 33 is inserted into the threaded hole 41.
When the conductive silver paste is needed to be dispensed, the conductive silver paste is injected into the accommodating cavity from the bottom end of the syringe 1, and then the needle head 2 is mounted on the syringe 1. After the needle 2 is installed, the screw rod 33 is rotated by the handle 5, so that the screw rod 33 pushes the push rod 31 and the piston head 32 to linearly move towards the bottom end of the needle cylinder 1, namely, the push rod 31 and the piston head 32 move along the axis of the needle cylinder 1 without rotating, so that compressed air in the needle cylinder 1 extrudes conductive silver paste in the needle cylinder 1, and finally, the conductive silver paste flows out from the needle 2. Because the conductive silver paste has larger viscosity and the needle head 2 is thinner, the conductive silver paste cannot be extruded instantly and slowly flows out until the residual air pressure in the syringe 1 is released. The product can be subjected to spot conductive silver paste operation when the conductive silver paste slowly flows out. When the point conductive silver paste is completed, the screw 33 is reversely rotated to reduce the air pressure in the accommodating cavity, and the conductive silver paste reversely flows into the accommodating cavity under the external atmospheric pressure.
In the injector for conductive silver paste, the stroke of the piston head 32 can be precisely controlled by controlling the rotation radian of the screw 33, so that the air pressure in the needle cylinder 1 is precisely controlled, and the paste discharge amount of the conductive silver paste is finally precisely controlled, thereby saving the use, reducing the waste of the conductive silver paste, reducing the cost and reducing the environmental pressure.
The pitch of the screw 33 and the screw hole 41 may be specifically set as required. In one example, the pitch of the screw 33 and threaded bore 41 is 0.1-0.2mm to control the stroke of the piston head 32 as precisely as possible.
To achieve the above object, the components of the syringe may be arranged in various ways, and the configuration of the components will be described in detail below with reference to specific embodiments.
The fixing member 4 is integrally formed by integrally connecting a top plate 42, a side plate 43, and a connecting plate 44. The top plate 42 has a substantially rectangular parallelepiped shape and has a length and a width that are larger than the diameter of the cylinder wall of the cylinder 1. The side plates 43 are provided in two, the widths of the two side plates 43 are the same as the top plate 42, and the two side plates 43 are vertically fixed to both ends of the top plate 42, respectively. The two connection plates 44 are also provided, one connection plate 44 is fixed to the bottom end of each side plate 43, the two connection plates 44 are perpendicular to the side plates 43 and parallel to the top plate 42, and the two connection plates 44 face each other with a gap. A screw hole 41 is provided in the middle of the top plate 42, and the screw 33 passes through a gap between the screw hole 41 and the connection plate 44.
At this time, the top end of the cylinder 1 is provided with an annular boss 11 protruding outward, and two connection plates 44 are fixed to the bottom surface of the annular boss 11 by means of, for example, strong glue bonding, screws or bolts and nuts, so that the fixing member 4 is fixed to the cylinder 1. The annular boss 11 may be integrally formed with the cylinder 1. The annular boss 11 and the connecting plate 44 are respectively provided with an alignment hole extending along the axis of the needle cylinder 1, when the fixing piece 4 and the needle cylinder 1 are assembled, the fixing piece 4 and the needle cylinder 1 are aligned through the pin 6 penetrating through the alignment holes, and the pin 6 is in interference fit with the alignment holes. Further, the outer end surface of the annular boss 11 may be in a regular annular shape, after the connecting plate 44 of the fixing element 4 is fixed on the annular boss 11, the two side plates 43 of the fixing element 4 are abutted against the outer end surface (not shown in the figure) of the annular boss 11, and further alignment of the fixing element 4 and the needle cylinder 1 is realized by the annular boss 11 and the connecting plate 44.
The fixing piece 4 is fixed on the needle cylinder 1 in the mode, so that the structure is simple; the axis of the threaded hole 41 is conveniently aligned with the axis of the needle cylinder 1, so that the axis of the screw 33 is in line with the axis of the needle cylinder 1 as much as possible, and when the screw 33 drives the push rod 31 and the piston head 32 to move, the risk of tilting caused by uneven stress on each part of the piston head 32 is reduced, and air leakage and even conductive silver paste leakage are generated.
Of course, in other embodiments, as shown in fig. 2, a gap may be left between the side plate 43 of the fixing element 4 and the annular boss 11 of the syringe 1; alternatively, the fixing member 4 is a cylindrical plug or the like fixed in the accommodating chamber of the cylinder 1 and provided with a screw hole 41 therein.
In addition, the distance between the top plate 42 of the fixing member 4 and the cylinder 1 is greater than the maximum length of the screw 33 at the upper end of the top plate 42. The maximum length of the screw 33 at the upper end of the top plate 42, that is, the length of the screw 33 at the upper end of the top plate 42 after the conductive silver paste is injected into the cylinder 1 and before the screw 33 is not rotated. Wherein the length of the screw 33 at the upper end of the top plate 42, i.e. the length of the screw 33 between the handle 5 and the top plate 42 of the fixture 4. When the axis of the screw 33 deviates from the axis of the needle cylinder 1, the inclination of the screw 33 can be slightly adjusted by the handle 5, so that the inclination caused by uneven stress on each part of the piston head 32 is reduced as much as possible, and the risk of air leakage and even conductive silver paste leakage is further reduced.
The pushrod 31 may be formed of two plates that intersect vertically such that the pushrod 31 has a generally cross-shaped cross-section. And a gap is left between the push rod 31 and the cylinder wall of the needle cylinder 1, i.e. the two plates constituting the push rod 31 are not in contact with the cylinder wall of the needle cylinder 1. The piston head 32 may be formed by sleeving a piston sleeve at the bottom end of the push rod 31, wherein the piston sleeve is made of rubber material and is in sealing contact with the cylinder wall of the syringe 1. And the ratio of the sum of the lengths of the push rod 31 and the piston head 32 to the length of the screw 33 (i.e., the length of the screw 33 between the push rod 31 and the handle 5) is 1:4-5. The structure is simple, the stress of each part of the push rod 31 is conveniently adjusted through the screw rod 33, and the inclination caused by uneven stress of each part of the piston head 32 is reduced as much as possible, so that the risk of air leakage and even leakage of conductive silver paste is avoided.
The handle 5 may be a butterfly handle 5, and the butterfly handle 5 may be fixed to the screw 33, for example, by welding. The butterfly handle 5 has a simple structure, is convenient for applying force and is convenient for controlling the rotation angle.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (9)
1. An injector for spot conductive silver paste, comprising:
a needle cylinder;
the needle head is fixed at the bottom end of the needle cylinder and is provided with a slurry outlet communicated with the needle cylinder;
the piston rod comprises a push rod positioned in the needle cylinder, a piston head positioned at the bottom end of the push rod and in sealing contact with the cylinder wall of the needle cylinder, and a screw rod positioned at the top end of the push rod and connected with the push rod ball, wherein the top end of the screw rod is positioned outside the needle cylinder and is fixedly provided with a handle, and a gap is reserved between the screw rod and the cylinder wall of the needle cylinder; the push rod comprises two plates which are vertically crossed, and a gap is reserved between the push rod and the cylinder wall of the needle cylinder; the ratio of the sum of the lengths of the push rod and the piston head to the length of the screw rod is 1:4-5, and the screw rod is used for adjusting the stress of each part of the push rod and reducing the inclination of each part of the piston head caused by uneven stress;
the fixing piece is fixedly connected with the needle cylinder, a threaded hole penetrating through the screw rod is formed in the fixing piece, and the axis of the threaded hole is collinear with the axis of the needle cylinder; the fixing piece comprises a top plate which is provided with the threaded hole and extends perpendicular to the axis of the needle cylinder, and the distance between the top plate and the needle cylinder is larger than the maximum length of the screw rod at the upper end of the top plate.
2. The syringe for spot conductive silver paste according to claim 1, wherein said fixing member comprises two side plates provided at both ends of said top plate and extending along the axis of said cylinder, wherein bottom ends of both of said side plates are provided with a connection plate extending inward and fixed to said cylinder.
3. The syringe for spot conductive silver paste according to claim 2, wherein an annular boss protruding outward is provided at a top end of the cylinder, and two of the connection plates are fixed to a bottom surface of the annular boss.
4. The syringe for spot conductive silver paste of claim 3, wherein a pin extending along the axis of the barrel is disposed between the annular boss and the web, wherein the pin is in an interference fit with the annular boss and the web.
5. The syringe for spot conduction silver paste according to claim 4, wherein an outer end surface of said annular boss is in a circular ring shape, and wherein two of said side plates abut against the outer end surface of said annular boss.
6. The syringe for spot conducting silver paste of claim 5, wherein said barrel and said annular boss are of an integrally formed construction.
7. The syringe for spot conducting silver paste of claim 6, wherein said top plate, said side plate and said connecting plate are of an integrally formed construction.
8. The syringe for spot conducting silver paste of any one of claims 1 to 7, wherein a gap is left between the push rod and the cylinder wall of the cylinder.
9. The syringe for spot conducting silver paste of any one of claims 1 to 7, wherein the handle is a butterfly handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110838043.7A CN113578697B (en) | 2021-07-23 | 2021-07-23 | Injector for point conductive silver paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110838043.7A CN113578697B (en) | 2021-07-23 | 2021-07-23 | Injector for point conductive silver paste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113578697A CN113578697A (en) | 2021-11-02 |
| CN113578697B true CN113578697B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110838043.7A Active CN113578697B (en) | 2021-07-23 | 2021-07-23 | Injector for point conductive silver paste |
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| CN (1) | CN113578697B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087867U (en) * | 1991-04-16 | 1991-11-06 | 严有彰 | Injector for tree trunk |
| CN201291172Y (en) * | 2008-11-07 | 2009-08-19 | 安徽淮河化工股份有限公司 | Double-component fluid pressurization injection device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4626491B2 (en) * | 2005-11-09 | 2011-02-09 | 株式会社ケンウッド | Syringe cover |
| US20100213217A1 (en) * | 2009-02-23 | 2010-08-26 | Nordson Corporation | Liquid dispensing assembly |
| CA2857506C (en) * | 2011-12-08 | 2020-01-14 | Unitract Syringe Pty Ltd | Accurate dose control mechanisms and drug delivery syringes |
| CN203725352U (en) * | 2014-03-21 | 2014-07-23 | 罗贤松 | Integral mixing/injection AB adhesive barrel |
| CN204033386U (en) * | 2014-07-03 | 2014-12-24 | 王仪峰 | Pressure cylinder is added for bone cement injector |
| CN207253394U (en) * | 2017-03-08 | 2018-04-20 | 西昌学院 | Mice lavage device |
| CN208583555U (en) * | 2018-04-18 | 2019-03-08 | 遂宁市互惠光电产品有限公司 | One kind being used for LED lamp electromagnetic type dispenser syringe for dispensing glue |
| CN211381645U (en) * | 2019-06-27 | 2020-09-01 | 马伯敏 | Tumor minimally invasive interventional therapy device |
| CN211911781U (en) * | 2020-03-04 | 2020-11-13 | 呼和浩特市第一医院 | Bone cement injection device |
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2021
- 2021-07-23 CN CN202110838043.7A patent/CN113578697B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087867U (en) * | 1991-04-16 | 1991-11-06 | 严有彰 | Injector for tree trunk |
| CN201291172Y (en) * | 2008-11-07 | 2009-08-19 | 安徽淮河化工股份有限公司 | Double-component fluid pressurization injection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113578697A (en) | 2021-11-02 |
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