CN220177371U - Solder paste piezoelectric injection valve - Google Patents
Solder paste piezoelectric injection valve Download PDFInfo
- Publication number
- CN220177371U CN220177371U CN202321376616.XU CN202321376616U CN220177371U CN 220177371 U CN220177371 U CN 220177371U CN 202321376616 U CN202321376616 U CN 202321376616U CN 220177371 U CN220177371 U CN 220177371U
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- Prior art keywords
- firing pin
- nozzle
- solder paste
- impact
- conical surface
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- 229910000679 solder Inorganic materials 0.000 title claims abstract description 31
- 238000002347 injection Methods 0.000 title claims abstract description 22
- 239000007924 injection Substances 0.000 title claims abstract description 22
- 238000010304 firing Methods 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 abstract description 58
- 230000000694 effects Effects 0.000 abstract description 24
- 238000005507 spraying Methods 0.000 abstract description 17
- 239000012530 fluid Substances 0.000 abstract description 14
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- 239000000243 solution Substances 0.000 description 6
- 241000755266 Kathetostoma giganteum Species 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a solder paste piezoelectric injection valve, which comprises a valve body, a firing pin and a nozzle, wherein the firing pin is assembled in the valve body, and an impact end of the firing pin is provided with an impact plane; the nozzle is provided with an introduction conical surface, and the introduction conical surface is a conical surface; the firing pin impacts towards the leading-in conical surface and collides with the leading-in conical surface; the taper of the lead-in conical surface is 90 degrees. The firing pin is provided with the impact plane matched with the guide conical surface of the nozzle, the taper of the guide conical surface is 90 degrees, so that the peripheral part of the contact part of the firing pin and the nozzle is consistent, the pressure is uniform, the spraying effect is better, in other words, the impact plane of the firing pin is in seamless contact with the nozzle, the pressure of glue fluid is balanced, the glue spraying effect is improved, and the consistency of glue flow is increased.
Description
Technical Field
The utility model relates to the field of injection valves, in particular to a solder paste piezoelectric injection valve.
Background
The solder paste jet printing technology can jet solder paste at extremely high speed through a unique jet device, and has space limitation and selective coating of special-shaped components. Solder paste cannot be ejected by conventional contact because contact impact can cause high pressure extrusion to occur to solder paste in dead space under the striker and nozzle.
The existing solder paste spraying method generates solder paste glue points through screw stirring and non-contact impact of a piezoelectric firing pin, wherein the impact end of the firing pin in a mechanism for generating the solder paste glue points through the non-contact impact of the piezoelectric firing pin is a spherical surface, and a gap exists between the spherical surface of the firing pin and a nozzle, so that unbalanced glue fluid pressure is caused, pressure release is easy, and the glue spraying effect is affected, such as: a piezoelectric driven hot melt adhesive injection valve is disclosed in chinese patent CN 207446558U.
Therefore, how to solve the technical problems that the pressure of glue fluid is unbalanced and pressure is easy to release and the glue spraying effect is affected due to the fact that a gap exists between a firing pin and a nozzle of a spherical surface is one of the research directions of the technicians in the field.
Disclosure of Invention
In order to solve the technical problems in the prior art, the utility model aims to provide a solder paste piezoelectric injection valve.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a solder paste piezoelectric injection valve, comprising a valve body, a firing pin and a nozzle, wherein:
the striker is assembled in the valve body with an impact end having an impact plane;
the nozzle is provided with an introduction conical surface, and the introduction conical surface is a conical surface;
the firing pin impacts towards the leading-in conical surface and collides with the leading-in conical surface;
the taper of the lead-in conical surface is 90 degrees.
Further preferred is: the end of the firing pin, which is close to the nozzle, is the impact end;
the end face of the impact end is a plane, and the plane is the impact plane.
Further preferred is: a guide surface is provided between the impact plane and the annular outer wall of the striker.
Further preferred is: the guide surface is an inclined surface or an arc surface.
Further preferred is: the firing pin comprises a firing pin body and an impact section which are integrally connected, wherein the impact section is a section close to the nozzle, and the impact end is one end of the impact section;
the diameter of the strike section is smaller than the diameter of the striker body.
Further preferred is: the nozzle is provided with coaxially distributed guide holes and jet holes, wherein:
the guide hole is a conical hole, and the inner side surface of the guide hole is the guide conical surface;
the injection hole has a conical section that communicates with the introduction hole.
Further preferred is: the conical section has a spray cone with a taper of 60 °.
Further preferred is: the valve body is assembled on the liquid box, and a joint and a guide sleeve are arranged in the valve body;
the connector extends into the assembly hole of the liquid box;
one end of the guide sleeve is inserted into the assembly hole and connected with the liquid box through an adjusting nut;
the striker strikes through the joint, the guide sleeve, and toward the nozzle.
Further preferred is: the guide sleeve is embedded into the sealing ring, and the sealing ring is arranged between the guide sleeve and the connecting edge of the liquid box.
Further preferred is: the adjusting nut is in threaded connection with the connecting edge.
After the technical scheme is adopted, compared with the background technology, the utility model has the following advantages:
the firing pin is provided with the impact plane matched with the guide-in conical surface of the nozzle, the taper of the guide-in conical surface is 90 degrees, so that the peripheral part of the contact part of the firing pin and the nozzle is consistent, the pressure is uniform, the spraying effect is better, in other words, the impact plane of the firing pin is in seamless contact with the nozzle, the pressure of glue fluid is balanced, the glue spraying effect is improved, the consistency of glue flow is improved, the glue fluid pushing effect with high viscosity is good, the feeding stability and precision are improved, and the glue dispensing effect is better.
Drawings
FIG. 1 is a schematic perspective view of a solder paste piezoelectric jetting valve according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a solder paste piezoelectric jetting valve in accordance with an embodiment of the present utility model;
FIG. 3 is an enlarged view of the structure at A in the structure of FIG. 2;
fig. 4 is a perspective view schematically showing the structure of the striker according to the embodiment of the present utility model.
The reference numerals in the above description are as follows:
1. a glue cavity;
10. a glue barrel; 20. an adjusting bolt; 30. a liquid box; 31. a flow passage; 32. connecting the convex edges; 40. adjusting the nut; 50. a valve body; 60. a joint; 70. guide sleeve;
100. a striker; 110. a striker body; 120. an impact section; 121. strike plane.
Detailed Description
The existing solder paste spraying method generates solder paste glue points through screw stirring and non-contact impact of a piezoelectric firing pin, wherein the impact end of the firing pin in a mechanism for generating the solder paste glue points through the non-contact impact of the piezoelectric firing pin is spherical, namely: the gap exists between the firing pin and the nozzle of the spherical surface, so that the pressure of glue fluid is unbalanced, pressure is easily released, and the glue spraying effect is affected.
The inventor aims at the technical problems, and through analyzing reasons, the inventor finds a solder paste piezoelectric injection valve which comprises a valve body, a firing pin and a nozzle, wherein:
the striker is assembled in the valve body with an impact end having an impact plane;
the nozzle is provided with an introduction conical surface, and the introduction conical surface is a conical surface;
the firing pin impacts towards the leading-in conical surface and collides with the leading-in conical surface;
the taper of the lead-in conical surface is 90 degrees.
In the technical scheme, the firing pin is provided with the impact plane matched with the leading-in conical surface of the nozzle, the taper of the leading-in conical surface is 90 degrees, so that the peripheral part of the contact part of the firing pin and the nozzle is consistent, the pressure is uniform, the spraying effect is better, in other words, the impact plane of the firing pin is in seamless contact with the nozzle, the pressure of glue fluid is balanced, the glue spraying effect is improved, the consistency of the glue flow is improved, the glue fluid pushing effect on high viscosity is good, and meanwhile, the feeding stability and precision are also improved, so that the glue dispensing effect is better.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It should be noted that, in the present utility model, terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element of the present utility model must have a specific orientation, and thus should not be construed as limiting the present utility model.
Examples
As shown in FIG. 2, the inner firing pin 100 is provided with an impact plane matched with the leading-in conical surface of the nozzle, so that the peripheral area of the contact position of the firing pin 100 and the nozzle is consistent, the pressure is uniform, the spraying effect is better, in other words, the impact plane of the firing pin is in seamless contact with the nozzle, so that the pressure of glue fluid is balanced, the glue spraying effect is improved, the consistency of glue flow is increased, the glue fluid pushing effect with high viscosity is good, and meanwhile, the feeding stability and precision are also improved, so that the glue dispensing effect is better.
As shown in fig. 1 to 2, the solder paste piezoelectric injection valve comprises a valve body 50, a firing pin 100, a guide sleeve 70, a nozzle and an adjusting nut 40, wherein the firing pin 100 is assembled in the valve body 50, the firing pin 100 passes through the guide sleeve 70, and the edge of the impact end of the firing pin 100 impacts with the leading-in conical surface of the nozzle.
As shown in fig. 1 to 2, the valve body 50 is mounted on the liquid cartridge 30 by screws; the liquid box 30 includes an integrally connected mounting portion and a backflow portion, the mounting portion is provided with valve mounting through holes, the valve mounting through holes correspond to and are communicated with mounting screw holes of the valve body 50, and a screw rod passes through the valve mounting through holes and is screwed with the mounting screw holes, so that the valve body 50 is mounted on the liquid box 30; an assembly hole is provided near the valve installation through hole, the joint 60 of the valve body 50 is inserted into the assembly hole, and the striker 100 passes through the joint 60 and the guide bush 70 to collide with the nozzle. The flow guide part of the liquid box 30 is internally provided with a flow channel 31, an inlet of the flow channel 31 is communicated with the glue barrel 10, an outlet of the flow channel 31 is communicated with the glue cavity 1 of the valve body 50, the flow channel 31 is formed by a bent vertical section and an inclined section, the inlet of the flow channel 31 is a port of the vertical section, the outlet of the flow channel 31 is a port of the inclined section, a control port is formed along the axial direction of the inclined section and far away from the mounting part, and the control port is screwed tightly through the adjusting bolt 20.
As shown in fig. 1 to 2, the glue barrel 10 is vertically disposed and mounted on the backflow portion of the liquid box 30, and the glue outlet of the glue barrel 10 is abutted against and communicated with the inlet of the flow channel 31, so that the glue solution in the glue barrel 10 flows into the flow channel 31 and flows back to the glue cavity 1 of the valve body 50 through the flow channel 31, and in the process of flowing in the glue solution, the air quantity in the flow channel 31 is regulated by using the rotation control of the adjusting bolt 20, so that the flow rate of the glue solution is increased or decreased.
As shown in fig. 1 to 2, the bottom of the valve body 50 is pressed against the mounting portion of the liquid box 30 and is connected with the liquid box 30 by a screw, a protruding joint 60 is arranged at the bottom of the valve body 50, the joint 60 is inserted into an assembly hole of the liquid box 30, a connecting flange 32 is arranged at the edge of the assembly hole facing away from the valve body 50, the connecting flange 32 is annular, and a sealing ring is embedded at the periphery of the guide sleeve 70 and is inserted into the connecting flange 32; the guide sleeve 70 is a cylinder, the middle part of the guide sleeve is penetrated with the firing pin 100, one end of the guide sleeve, which is far away from the connecting convex edge 32, is a mounting end, and the spraying rotation is connected with the mounting end of the guide sleeve 70; the middle part of adjusting nut has the through-hole, is used for stepping down the nozzle, namely: the adjusting nut covers the guide sleeve 70 towards the liquid box 30 and is connected with the connecting flange 32, and the nozzle extends out of the through hole of the adjusting nut. It should be noted that: the outer side wall of the connecting convex edge 32 is provided with screw threads, the screw threads are screw thread sections for threaded connection, and the adjusting nut is in threaded connection with the connecting convex edge 32.
It should be noted that: as shown in fig. 2 to 3, the joint 60 and the guide sleeve 70 are disposed at intervals, the end of the joint 60 is inserted into the assembly hole, and the joint 60, the assembly hole and the guide sleeve 70 enclose the glue cavity 1, specifically: the tip of the joint 60 is inserted into the assembly hole and extends into the assembly hole, one end of the guide sleeve 70 is inserted into the assembly hole, and the joint 60 and the guide sleeve 70 are both disposed in the assembly hole and are spaced apart from each other in the assembly hole, in other words: a gap is arranged between the joint 60 and the guide sleeve 70, and is arranged in the assembly hole, so that a columnar cavity is formed in the assembly Kong Wei, and the cavity is the glue cavity 1; the outlet of the flow channel 31 is arranged corresponding to the glue cavity 1, namely: the glue cavity 1 is communicated with the runner 31.
As shown in fig. 2 to 4, the striking end of the striking pin 100 is a T-shaped pillow, which is inserted into the glue chamber 1 through the central hole of the joint 60, then inserted into the nozzle introduction hole through the central hole of the guide sleeve 70, and the striking end of the striking pin 100 strikes the inner wall of the introduction hole, so that the glue solution in the glue chamber 1 is ejected through the introduction hole and the ejection hole. The firing pin 100 includes a firing pin body 110 and a striking section 120, the striking section 120 is a small end of the firing pin 100 near the nozzle, an end of the striking section 120 is a striking end, a diameter of the striking section 120 is smaller than that of the firing pin body 110, the striking section 120 is connected with the firing pin body 110 through a conical surface, and the striking section 120 has a planar striking end, namely: striker 100 has a planar strike plane 121, with strike plane 121 being the end face of the strike end.
As shown in fig. 2 to 4, the striking plane 121 and the annular outer side surface of the striking end may also be connected by a guide surface, where the guide surface is a circular arc guide surface or an inclined guide surface, and preferably: the guide surface is an arc guide surface. It should be noted that: the guide surface is arranged to adapt to the actual machining requirement of the striker 100, and is convenient to avoid damage to the striker 100 caused by high-frequency impact at the sharp bending position of the support leg. The design of the guide surface can also prolong the service life of striker 100 on the basis of realizing uniform pressure and better injection effect.
As shown in fig. 2 to 4, the striker 100 has an impact plane 121, in the present embodiment: striker 100 with strike plane 121 is a flat-headed striker 100. In the actual spraying process of the flat-head firing pin 100, the peripheral part of the contact part of the flat-head firing pin and the nozzle is consistent, the pressure is uniform, the spraying effect is better, in other words, the impact plane of the firing pin is in seamless contact with the nozzle, so that the pressure of glue fluid is balanced, the glue spraying effect is improved, the consistency of glue flow is increased, the glue fluid with high viscosity is pushed out effectively, and meanwhile, the feeding stability and precision are improved, so that the glue dispensing effect is better.
As shown in fig. 2 to 4, the nozzle has an introduction hole and an injection hole which are coaxially distributed and communicated, the introduction hole is conical, the introduction hole has an introduction cone surface, the injection hole has a cone-shaped portion, the side surface of the cone-shaped portion is an injection cone surface, and the introduction hole is provided near the striker 100, that is: the striking section 120 of the striker 100 is inserted into the introduction hole, the striking plane 121 of the striker 100 is struck toward the introduction cone, and the glue solution generated by the striking is ejected from the ejection hole along the ejection cone.
It should be noted that: as shown in fig. 3, the inlet hole is a conical hole, the taper angle α of the center cone of the inlet hole is 90 °, the spray hole has a conical section, the conical section of the spray hole is conical, the conical section of the spray hole has the spray cone surface, and the taper angle β of the center cone of the conical section of the spray hole is 60 °. The specific method is as follows: the introduction holes are adjacent to and communicate with the conical sections of the injection holes.
As shown in fig. 1 to 4, in the solder paste piezoelectric injection valve set forth in the technical scheme, the flat-head firing pin 100 is utilized to strike against the inner wall of the leading-in hole with the taper of 90 degrees, so that the peripheral area of the contact position of the firing pin 100 and the nozzle is consistent, the pressure is uniform, the injection effect is better, in other words, the striking plane is in seamless contact with the nozzle, the pressure of the glue fluid is balanced, the glue injection effect is improved, the consistency of the glue flow is increased, the glue fluid with high viscosity is pushed, the feeding stability and precision are improved, and the glue injection effect is better.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
Claims (10)
1. Solder paste piezoelectricity injection valve, its characterized in that: including valve body, firing pin and nozzle, wherein:
the striker is assembled in the valve body with an impact end having an impact plane;
the nozzle is provided with an introduction conical surface, and the introduction conical surface is a conical surface;
the firing pin impacts towards the leading-in conical surface and collides with the leading-in conical surface;
the taper of the lead-in conical surface is 90 degrees.
2. The solder paste piezoelectric jetting valve of claim 1, wherein: the end of the firing pin, which is close to the nozzle, is the impact end;
the end face of the impact end is a plane, and the plane is the impact plane.
3. The solder paste piezoelectric jetting valve of claim 2, wherein: a guide surface is provided between the impact plane and the annular outer wall of the striker.
4. A solder paste piezoelectric spray valve according to claim 3, wherein: the guide surface is an inclined surface or an arc surface.
5. The solder paste piezoelectric jetting valve of claim 1, wherein: the firing pin comprises a firing pin body and an impact section which are integrally connected, wherein the impact section is a section close to the nozzle, and the impact end is one end of the impact section;
the diameter of the strike section is smaller than the diameter of the striker body.
6. The solder paste piezoelectric jetting valve of claim 1, wherein: the nozzle is provided with coaxially distributed guide holes and jet holes, wherein:
the guide hole is a conical hole, and the inner side surface of the guide hole is the guide conical surface;
the injection hole has a conical section that communicates with the introduction hole.
7. The solder paste piezoelectric jetting valve of claim 6, wherein: the conical section has a spray cone with a taper of 60 °.
8. The solder paste piezoelectric jetting valve of claim 1, wherein: the valve body is assembled on the liquid box, and a joint and a guide sleeve are arranged in the valve body;
the connector extends into the assembly hole of the liquid box;
one end of the guide sleeve is inserted into the assembly hole and connected with the liquid box through an adjusting nut;
the striker strikes through the joint, the guide sleeve, and toward the nozzle.
9. The solder paste piezoelectric jetting valve of claim 8, wherein: the guide sleeve is embedded into the sealing ring, and the sealing ring is arranged between the guide sleeve and the connecting edge of the liquid box.
10. The solder paste piezoelectric jetting valve of claim 9, wherein: the adjusting nut is in threaded connection with the connecting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321376616.XU CN220177371U (en) | 2023-06-01 | 2023-06-01 | Solder paste piezoelectric injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321376616.XU CN220177371U (en) | 2023-06-01 | 2023-06-01 | Solder paste piezoelectric injection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220177371U true CN220177371U (en) | 2023-12-15 |
Family
ID=89102549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321376616.XU Active CN220177371U (en) | 2023-06-01 | 2023-06-01 | Solder paste piezoelectric injection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220177371U (en) |
-
2023
- 2023-06-01 CN CN202321376616.XU patent/CN220177371U/en active Active
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