CN220023386U - Digital display module adopting UV curing process - Google Patents
Digital display module adopting UV curing process Download PDFInfo
- Publication number
- CN220023386U CN220023386U CN202321324693.0U CN202321324693U CN220023386U CN 220023386 U CN220023386 U CN 220023386U CN 202321324693 U CN202321324693 U CN 202321324693U CN 220023386 U CN220023386 U CN 220023386U
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- CN
- China
- Prior art keywords
- pcb
- digital display
- plastic shell
- pcb board
- display module
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Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003848 UV Light-Curing Methods 0.000 title claims abstract description 15
- 239000003292 glue Substances 0.000 claims abstract description 24
- 238000007711 solidification Methods 0.000 claims abstract description 6
- 230000008023 solidification Effects 0.000 claims abstract description 6
- 238000001723 curing Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229910000679 solder Inorganic materials 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model belongs to the technical field of LED digital display screens, and relates to a digital display module adopting a UV curing process, which comprises a plastic shell, a PCB (printed circuit board), PIN PINs and a diaphragm, wherein the diaphragm is arranged on the outer surface of the plastic shell, a step is arranged on the inner surface of the plastic shell, and a plurality of positioning columns are vertically arranged at the bottom end of the inner wall of the plastic shell; the PCB board sets up on the step of plastic housing, and the through-hole has been seted up to the position department that PCB board surface was located every reference column for the PCB board passes the reference column and installs on the step of plastic housing, and the position department point of reference column and through-hole scribbles UV and glues and solidify the back through the solidification machine, realizes the fixed connection between PCB board and the plastic housing. The PCB and the plastic shell are fixed in a dispensing mode, a hot riveting machine and a special hot riveting jig are not needed, and dispensing of different models can be completed by only one programmable multi-axis dispensing machine, so that the universality is good and the production efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of LED digital display screens, and relates to a digital display module adopting a UV curing process.
Background
The LED nixie tube is a display screen, and the corresponding pen section of the LED nixie tube can emit light by controlling the current input into different pins of the LED nixie tube, so that the LED nixie tube can display all the parameters which can be represented by numbers, such as time, date, temperature and the like. The LED nixie tube has the advantages of low power consumption, impact resistance, long service life, simple use and the like, and is widely applied to electric appliances, particularly household appliances, such as air conditioners, water heaters, refrigerators, washing machines and the like.
The existing LED digital display product adopting the patch type lamp beads generally adopts a hot riveting process, namely, a positioning column is designed on a plastic shell, a PCB board passes through the positioning column and is installed on the plastic shell, the positioning column slightly protrudes, and then the protruding positioning column is flattened through a hot riveting machine, so that the shell and the PCB board are firmly combined. For example, patent No.: CN201921851269.5 discloses a digital display screen structure of LED, this application includes digital display screen casing and is fixed in the inside PCB board that is used for digital display that has of digital display screen casing, and the coating glue layer is on the PCB board surface, and the PCB board after waiting to spray glue is fixed to be installed in digital display screen casing after baking the solidification through the oven, still is equipped with the locating hole on the PCB board, is equipped with the reference column on the digital display screen casing, and the PCB board is fixed with the reference column of digital display screen casing bottom surface through the locating hole with punching press or hot pressing mode riveting. By adopting the process, the special hot riveting jig is required to be manufactured according to the PCB, the hot riveting process time is long (usually more than tens of seconds), the production efficiency is low, and if the locating column is required to be damaged and the shell is required to be scrapped during repair, the product yield is affected. And by adopting the UV glue process, the liquid UV glue can be cured only by irradiating for about 10 seconds under ultraviolet rays, so that the production efficiency is greatly improved compared with that of a hot riveting process.
Disclosure of Invention
Aiming at the problems, the utility model discloses a digital display module adopting a UV curing process, which solves the problems of low production efficiency and low yield of LED digital display products in the prior art.
The specific technical scheme is as follows:
the digital display module adopting the UV curing process comprises a plastic shell, a PCB (printed circuit board), a PIN needle and a diaphragm, wherein the diaphragm is arranged on the outer surface of the plastic shell, a step is arranged on the inner surface of the plastic shell, and a plurality of positioning columns are vertically arranged at the bottom end of the inner wall of the plastic shell; the PCB board sets up on the step of plastic housing, sets up a plurality of on the PCB board the PIN needle, and the through-hole has been seted up to the position department that the PCB board surface was located every reference column for the PCB board passes the reference column and installs on the step of plastic housing, the position department of reference column and through-hole is glued through the point and is scribbled UV through the point gum machine point and solidify the back through the solidification machine, realizes the fixed connection between PCB board and the plastic housing.
Further, the curing machine is an ultraviolet light curing machine.
Further, the length of the positioning column is greater than the thickness of the PCB.
Further, the diameter size of the through hole is slightly larger than that of the positioning column.
Furthermore, the PIN needles are divided into two groups and symmetrically distributed on two sides of the PCB.
Further, the PIN needle is connected with a bonding pad on the PCB in a riveting or welding mode.
The beneficial effects of the utility model are as follows:
(1) The fixing of the PCB and the plastic shell is finished by adopting a glue dispensing mode, a hot riveting machine and a special hot riveting jig are not needed, the glue dispensing of different types can be finished by only using one programmable multi-axis glue dispensing machine, the universality is good, the solidification of the liquid UV glue can be finished by only irradiating the liquid UV glue for about 10 seconds, and the production efficiency is greatly improved compared with a hot riveting process.
(2) The UV curing machine is used for curing, the operation time is short, if the UV curing machine needs to be reworked, the solid UV glue can be dissolved through the glue dissolving agent, the glue is dispensed again for curing, the plastic shell can be used continuously, and the theoretical yield can reach 100%.
Drawings
FIG. 1 is a bottom view of the present utility model;
fig. 2 is a schematic structural view of the present utility model.
1-plastic shell, 2-PCB board, 3-diaphragm, 4-reference column, 5-UV glues, 6-PIN needle, through-hole 7, step 8.
Detailed Description
In order to make the technical scheme of the utility model clearer and more definite, the utility model is further described below with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent substitution and conventional reasoning on the technical characteristics of the technical scheme of the utility model falls into the protection scope of the utility model. The fixed connection mentioned in the utility model is a common connection mode in the mechanical field, and the fixed connection can be realized by welding, bolt-nut connection and screw connection.
In the description of the utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model.
1-2, a digital display module adopting a UV curing process comprises a plastic shell, a PCB (printed circuit board), PIN needles and a membrane, wherein the membrane is arranged on the outer surface of the plastic shell, a step is arranged on the inner surface of the plastic shell, and at least three positioning columns are vertically arranged at the bottom end of the inner wall of the plastic shell; a plurality of PIN needles are arranged on the PCB, and the PIN needles are divided into two groups and symmetrically distributed on two sides of the PCB; the PCB is arranged on a step of the plastic shell, the size of the PCB is matched with the size of the inner wall of the plastic shell, through holes are formed in the positions, located on each positioning column, of the surface of the PCB, the PCB can penetrate through the positioning columns and is arranged on the step of the plastic shell, the length of each positioning column is larger than the thickness of the PCB, the positioning columns can protrude out of the surface of the PCB, UV glue is dispensed on the positions of the positioning columns and the through holes through a dispensing machine and is cured through a curing machine, the curing machine adopts an ultraviolet light curing machine, and ultraviolet rays emitted by the curing machine irradiate the UV glue to enable the UV glue to be cured, so that the fixed connection between the PCB and the plastic shell is realized; the diameter size of the through hole is slightly larger than that of the positioning column, so that UV glue can enter a gap between the positioning column and the through hole, and the positioning column and the through hole can be fully bonded and fixed. If the plastic shell needs to be repaired, the solid UV glue can be dissolved through the glue dissolving agent, glue is dispensed again for solidification, and the plastic shell can be used continuously.
The production method of the digital display module comprises the following steps:
step one: and cleaning the PCB by using an ultrasonic cleaner.
Step two: and pressing the PIN needle into a PIN hole of the PCB on the PIN pressing device.
Step three: a layer of solder paste is printed on the PCB pads using a solder paste printer.
Step four: and placing the LEDs and other components on the solder pads printed with the solder paste on the PCB by using a chip mounter.
Step five: and (3) placing the PCB with the surface mounted in the fourth step into a reflow oven to solidify and cool the solder paste.
Step six: and D, loading the PCB subjected to reflow soldering in the fifth step into a plastic shell.
Step seven: and placing the plastic shell with the PCB upwards, placing the plastic shell on a platform of a multi-axis dispensing machine, debugging a dispensing program, and dispensing UV glue at the position of the positioning column to enable the UV glue to cover the positioning column.
Step eight: and D, placing the components subjected to the dispensing in the step seven into a UV curing machine, setting parameters such as curing time and the like, and completing curing.
Step nine: and (d) attaching a membrane to the surface of the plastic shell in the step (eight) so that the pattern on the membrane is completely matched with the window of the plastic shell.
Step ten: and (5) finishing the electrical test of the finished product on a tester.
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 (6)
1. The digital display module adopting the UV curing process comprises a plastic shell, a PCB (printed circuit board), a PIN needle and a diaphragm, wherein the diaphragm is arranged on the outer surface of the plastic shell, a step is arranged on the inner surface of the plastic shell, and a plurality of positioning columns are vertically arranged at the bottom end of the inner wall of the plastic shell; the PCB board sets up on the step of plastic housing, sets up a plurality of on the PCB board the PIN needle, and the through-hole has been seted up to the position department that PCB board surface was located every reference column for the PCB board passes the reference column and installs on the step of plastic housing, its characterized in that, the position department point of reference column and through-hole scribbles UV and glues and solidify the back through the solidification machine, realizes the fixed connection between PCB board and the plastic housing.
2. The digital display module adopting the UV curing process according to claim 1, wherein the curing machine is an ultraviolet light curing machine.
3. The digital display module adopting the UV curing process according to claim 1, wherein the length of the positioning column is greater than the thickness of the PCB.
4. A digital display module according to claim 3, wherein the diameter of the through hole is slightly larger than the diameter of the positioning column.
5. The digital display module adopting the UV curing process according to claim 1, wherein the PIN needles are divided into two groups and symmetrically distributed on two sides of the PCB.
6. The digital display module adopting the UV curing process according to claim 5, wherein the PIN needle is connected with a bonding pad on the PCB by riveting or welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321324693.0U CN220023386U (en) | 2023-05-29 | 2023-05-29 | Digital display module adopting UV curing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321324693.0U CN220023386U (en) | 2023-05-29 | 2023-05-29 | Digital display module adopting UV curing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220023386U true CN220023386U (en) | 2023-11-14 |
Family
ID=88686719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321324693.0U Active CN220023386U (en) | 2023-05-29 | 2023-05-29 | Digital display module adopting UV curing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220023386U (en) |
-
2023
- 2023-05-29 CN CN202321324693.0U patent/CN220023386U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |