SMD-LED lamp bead and packaging process thereof

Abstract

The invention provides an SMD-LED lamp bead packaging process. The SMD-LED lamp bead packaging process comprises the steps of obtaining a bracket semi-finished product module; obtaining a positioning jig; dispensing glue in the plurality of lens forming grooves and the packaging grooves of the plurality of bracket semi-finished products; overturning the bracket semi-finished product module, and enabling the packaging grooves of the plurality of bracket semi-finished products to directly face the plurality of lens forming grooves one by one; the packaging grooves of the multiple support semi-finished products are connected with the multiple lens forming grooves in a one-to-one correspondence mode; the upper template is assembled on the lower template; baking and curing; and glue in the lens forming groove is melted and fixed on the surface of the bracket semi-finished product to form a lens. Through the arrangement of the lens forming groove, glue in the lens forming groove is melted and fixed to form a lens on the surface of the support semi-finished product, compared with a traditional mold pressing glue injection mode, the beneficial effect of being low in cost is achieved, meanwhile, through the arrangement of the first positioning pin and the second positioning pin, the support bearing plate and the mold strip can be accurately positioned, and the production efficiency is improved. And the positions of the plurality of bracket semi-finished products and the positions of the plurality of lens forming grooves can accurately form a one-to-one correspondence relationship.

Description

Technical Field

[0001] The present invention relates to the technical field of lamp bead production, and in particular to an SMD-LED lamp bead and a packaging process thereof. Background Art

[0002] The packaging of SMD LED refers to the packaging of LED light-emitting chips inside the bracket. The function of the packaging is to provide sufficient protection for the chip to prevent the chip from failing due to long-term exposure to the air or mechanical damage, so as to improve the stability of the chip.

[0003] At present, there are three main ways to encapsulate SMD-LED lamp beads: glue dispensing, glue injection, and molding. The traditional glue dispensing method is to directly dispense the packaging glue into the packaging groove of the bracket, but this method can only form a flat surface on the surface of the bracket and cannot form a lens structure, not to mention the need to form a lens structure of a specific shape, and the application scenario is relatively narrow. If you want to form a lens or even a lens structure of a specific shape, you need to encapsulate it by means of glue injection. However, due to the small size of the semi-finished bracket, and the need to inject glue into multiple semi-finished brackets at the same time during glue injection packaging, this also leads to high precision requirements for the glue injection mold, and the molding of lenses of different shapes requires the corresponding glue injection mold to be re-created. The injection mold takes a long time to create and is costly, which increases the cost of packaging. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present application provides a SMD-LED lamp bead and a packaging process thereof.

[0005] The present application discloses an SMD-LED lamp bead packaging process, which includes: obtaining a bracket semi-finished product module; the bracket semi-finished product module includes a plurality of bracket semi-finished products, and the bracket semi-finished product has a packaging groove; obtaining a positioning fixture; the positioning fixture includes an upper template, a lower template and a mold strip, the mold strip is arranged on the lower template, and the mold strip surface has a plurality of lens molding grooves; dispensing glue in the plurality of lens molding grooves and the packaging grooves of the plurality of bracket semi-finished products respectively; turning over the bracket semi-finished product module, and making the packaging grooves of the plurality of bracket semi-finished products face the plurality of lens molding grooves respectively; connecting the packaging grooves of the plurality of bracket semi-finished products with the plurality of lens molding grooves respectively; closing the upper template with the lower template, pressing the bracket semi-finished product module on the mold strip, and making the plurality of bracket semi-finished products extend into the plurality of lens molding grooves respectively; baking and curing; the glue in the lens molding groove melts and solidifies on the surface of the bracket semi-finished product to form a lens; demolding and stripping; obtaining a plurality of SMD-LED lamp beads.

[0006] Preferably, the positioning fixture further comprises a plurality of first positioning pins, the plurality of first positioning pins are arranged on the surface of the lower template, and the bracket semi-finished product module is provided with a plurality of first positioning holes at positions corresponding to the plurality of first positioning pins; The step of connecting the packaging grooves of multiple semi-finished brackets with multiple lens molding grooves one by one includes the following sub-steps: making multiple first positioning pins correspond to multiple first positioning holes one by one; inserting multiple first positioning pins into multiple first positioning holes one by one; connecting the packaging grooves of multiple semi-finished brackets with multiple lens molding grooves one by one.

[0007] Preferably, a plurality of lower mold grooves are formed on the surface of the lower mold plate, and a plurality of mold strips are respectively installed in the plurality of lower mold grooves, and a plurality of lens forming grooves are formed on the surface of each mold strip; The step of obtaining a positioning jig includes the following sub-steps: selecting a corresponding mold strip according to the shape of the desired molded lens, wherein the mold strip has a lens molding groove adapted to the shape of the lens; selecting a lower template, the lower template having a lower mold groove capable of video bearing the mold strip; installing multiple mold strips in the lower mold grooves respectively; selecting an upper template adapted to the lower template to obtain a positioning jig.

[0008] Preferably, each mold strip is provided with a second positioning hole, and the positioning fixture further comprises a plurality of second positioning pins, and the plurality of second positioning pins are respectively arranged in the lower mold groove; When the plurality of mold strips are respectively installed in the lower mold grooves, the plurality of mold strips are positioned and installed at the preset positions of the lower mold grooves through the cooperation and guidance of the second positioning holes and the second positioning pins.

[0009] Preferably, at least two guide pins are provided on the surface of the lower template, and guide holes are provided on the upper template at positions corresponding to the guide pins; The upper template is molded together with the lower template through the cooperation of guide pins and guide holes.

[0010] Preferably, the method further includes the following steps before the baking and curing step: vacuuming the lens molding groove and the packaging groove to remove bubbles in the glue.

[0011] Preferably, the mold strip includes a mold strip body and a plurality of lens forming bodies, the mold strip body is provided with a plurality of mounting holes arranged in sequence, the plurality of lens forming bodies are respectively installed in the plurality of mounting holes, each lens forming body is provided with a lens forming groove, and the second positioning hole is provided at a position near the side edge of the mold strip body surface; The step of selecting a corresponding mold strip according to the shape of the desired molded lens includes the following sub-steps: selecting a corresponding lens molding body according to the shape of the desired molded lens, wherein the lens molding body has a lens molding groove adapted to the lens shape; installing multiple lens molding bodies in multiple mounting holes accordingly; and obtaining a mold strip corresponding to the shape of the desired molded lens.

[0012] Preferably, the positioning fixture further comprises a pressing plate, and the pressing plate is provided with a through hole and a plurality of through holes; After the step of installing the plurality of mold strips respectively in the lower mold groove, the following steps are also included: covering the surfaces of the plurality of mold strips with a pressing plate, and allowing the first positioning pin to pass through the through hole, and the plurality of lens molding bodies are respectively located in the plurality of through holes.

[0013] Preferably, before the step of performing glue dispensing in the packaging grooves of multiple lens molding grooves and multiple bracket semi-finished products, the following steps are also included: performing preliminary glue dispensing in the packaging grooves of multiple bracket semi-finished products; baking and curing the preliminary glue dispensing, and sealing the chip in the packaging groove after the glue is melted.

[0014] The present application also discloses an SMD-LED lamp bead, which is prepared using an SMD-LED lamp bead packaging process.

[0015] The beneficial effect of the present application is that glue is dispensed in multiple lens molding grooves and packaging grooves of multiple bracket semi-finished products respectively, wherein the glue in the packaging groove is melted to form a sealing structure in the packaging groove for sealing the LED chip in the packaging groove, and the glue in the lens molding groove is melted to form a lens on the surface of the bracket semi-finished product. In this way, a lens can be formed on the surface of the bracket semi-finished product without going through the glue injection process, thereby eliminating the high cost of making the glue injection mold and reducing the production cost.

[0016] At the same time, through the cooperation of the first positioning pin and the first positioning hole, it is ensured that when the bracket supporting plate is placed on the surface of the mold strip, multiple bracket semi-finished products can correspond one by one and accurately extend into the lens molding groove, ensuring that lenses of corresponding shapes can be accurately formed on the surface of each bracket semi-finished product, thereby improving packaging efficiency and product quality.

[0017] In addition, through the cooperation of the second positioning pin and the second positioning hole, each mold strip can be accurately positioned and installed at the preset position of the lower mold groove. By positioning the mold strip and the bracket supporting plate respectively, it is ensured that the positions of multiple bracket semi-finished products and multiple lens molding grooves can form an accurate one-to-one correspondence, thereby ensuring that each lens can be correspondingly molded on the surface of the bracket semi-finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is a schematic diagram of the structure of the semi-finished bracket module in Example 1; Figure 2 This is a schematic diagram of the structure of the semi-finished bracket module and the positioning fixture in Example 2; Figure 3 It is a structural schematic diagram of the lower template in the second embodiment; Figure 4This is a schematic diagram of the structure of the lower template after the pressing plate is removed in Example 2; Figure 5 This is a schematic diagram of the structure of the lower mold plate after the pressing plate and mold strips are removed in Example 2; Figure 6 It is a schematic diagram of the structure of the mold strip in the second embodiment; Figure 7 It is a structural schematic diagram of the pressure plate in the second embodiment; Figure 8 This is a flow chart of the SMD-LED lamp bead packaging process in Example 3.

[0019] Reference numerals: 1. Bracket semi-finished product module; 11. Bracket bearing plate; 12. Bracket semi-finished product; 13. First positioning hole; 2. Positioning fixture; 21. Upper template; 211. Guide hole; 22. Lower template; 221. Lower mold groove; 222. Guide pin; 23. Mold strip; 231. Mold strip body; 2311. Second positioning hole; 232. Lens molding body; 2321. Lens molding groove; 24. First positioning pin; 25. Second positioning pin; 26. Press plate; 261. Through hole; 262. Through hole. DETAILED DESCRIPTION

[0020] The following will disclose multiple embodiments of the present application with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present application. In other words, in some embodiments of the present application, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0021] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, in the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present application. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0023] In order to further understand the application content, features and effects of the present application, the following embodiments are cited and described in detail with reference to the accompanying drawings.

[0024] Embodiment 1: Reference Figure 1 , Figure 1 The structural schematic diagram of the bracket semi-finished product module in the first embodiment, the bracket semi-finished product module 1 in this embodiment includes a bracket bearing plate 11 and a plurality of bracket semi-finished products 12, the plurality of bracket semi-finished products 12 are respectively arranged on the bracket bearing plate 11, and the plurality of bracket semi-finished products 12 are arranged in a matrix, and at least one packaging groove is opened on the surface of each bracket semi-finished product 12. In this embodiment, three packaging grooves are opened on the surface of each bracket semi-finished product 12, and each packaging groove is loaded with an LED chip. It can be understood that the bracket semi-finished product 12 in this embodiment is a lamp bead bracket formed after injection molding, "crystal bonding" and wire welding processes in sequence, and the bracket semi-finished product module 1 is an LED bracket whole plate composed of a plurality of lamp bead brackets connected to each other. Furthermore, a plurality of first positioning holes 13 arranged at intervals are opened on the side of the bracket bearing plate 11, and the plurality of first positioning holes 13 are opened on the bracket bearing plate 11 in sequence along the long side direction of the bracket bearing plate 11, and the plurality of first positioning holes 13 are arranged linearly and close to one side of the length direction of the bracket bearing plate 11. Multiple bracket semi-finished products 12 are arranged in a matrix of multiple rows and columns. For the sake of ease of introduction, the long side direction of the bracket supporting plate 11 is called a row, and the short side direction of the bracket supporting plate 11 is called a column. Each first positioning hole 13 is respectively on the same straight line with the bracket semi-finished product 12 in one column.

[0025] It can be understood that the semi-finished bracket 12 in this embodiment will form SMD-LED lamp beads after packaging. Specifically, the SMD-LED lamp beads include a bracket body, three monochrome chips and a lens body. The surface of the bracket body is provided with three accommodating cavities arranged in a linear interval. The three monochrome chips are respectively arranged in the three accommodating cavities. The lens body includes a lens cover and three lenses respectively arranged on the lens cover. The lens cover is arranged on the surface of the bracket body, and the three lenses respectively cover the three monochrome chips. The accommodating cavity is the packaging groove on the original semi-finished bracket 12 and the packaging groove The glue is formed after solidification, and the lens is formed after the glue in the lens molding groove 2321 is melted. ‌

[0026] Embodiment 2: Reference Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of the semi-finished bracket module and the positioning fixture in Example 2. Figure 3 This is a schematic diagram of the structure of the lower template in the second embodiment. The positioning fixture 2 in this embodiment includes an upper template 21, a lower template 22 and a mold strip 23. The mold strip 23 is arranged on the lower template 22, and the surface of the mold strip 23 has a plurality of lens forming grooves 2321. In specific applications, a plurality of lower mold grooves 221 are provided on the surface of the lower template 22, and a plurality of mold strips 23 are respectively installed in the plurality of lower mold grooves 221, and a plurality of lens forming grooves 2321 are provided on the surface of each mold strip 23. In this embodiment, each mold strip 23 is provided with two rows of lens forming grooves 2321, and a plurality of lower mold grooves 221 are arranged side by side in sequence along the length direction of the lower template 22. A plurality of mold strips 23 are arranged side by side in sequence and are respectively installed in the plurality of lower mold grooves 221, so that a plurality of lens forming grooves 2321 are arranged in a matrix of multiple rows and columns on the surface of the lower template 22.

[0027] Refer to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the structure of the lower template after the pressure plate is removed in Example 2. Figure 5It is a schematic diagram of the structure of the lower template after the pressure plate and the mold strip are removed in the second embodiment. Preferably, the positioning fixture 2 also includes a plurality of first positioning pins 24, and the plurality of first positioning pins 24 are arranged on the surface of the lower template 22. In specific application, the first positioning pins 24 in this embodiment are used to cooperate with the first positioning holes 13 in the first embodiment. When the plurality of first positioning pins 24 are respectively inserted into the plurality of first positioning holes, the bracket semi-finished product module 1 can be effectively positioned and fixed at the preset position of the lower template 12, so that the packaging grooves of the plurality of bracket semi-finished products 12 are respectively connected with the plurality of lens molding grooves 2321 in a one-to-one correspondence. Specifically, in the present embodiment, the number of the first locating pins 24 is three, and the three first locating pins 24 are linearly spaced and arranged and are all located beside the lens forming groove 2321. It should be particularly noted that a first locating hole 13 is provided on one side of each column of the semi-finished brackets 12 on the bracket supporting plate 11, and the number of the first locating pins 24 is only three, which are respectively arranged beside three of the columns of lens forming grooves 2321, and the three first locating pins 24 are respectively corresponding to the three columns of lens forming grooves 2321 and are in the same straight line. In this way, when used, it is only necessary to form a preliminary one-to-one alignment between the packaging grooves of multiple semi-finished brackets 12 and the multiple lens forming grooves 2321, and then the three first locating pins 24 are respectively inserted into the three corresponding first locating holes 13, which can also achieve the effect of making the packaging grooves of multiple semi-finished brackets 12 correspond to the multiple lens forming grooves 2321 one by one. Compared with setting a larger number of first locating pins 24, the positioning effect is equivalent, and the time required for positioning is saved.

[0028] Refer to Figure 6 , Figure 6The schematic diagram of the structure of the mold strip in the second embodiment is shown in FIG. 2. Preferably, each mold strip 23 is provided with a second positioning hole 2311, and the positioning fixture 2 further includes a plurality of second positioning pins 25, which are respectively arranged in the lower mold groove 221. In specific application, each mold strip 23 is provided with two positioning holes, which are respectively located on both sides of the length direction of the mold strip 23, and the plurality of second positioning pins 25 are evenly divided into two rows, and the two rows of second positioning pins 25 are respectively close to the opposite side walls of the lower mold groove 221, and each second positioning hole 2311 corresponds to the position of a second positioning pin 25. In this way, through the cooperation and guidance of the second positioning holes 2311 and the second positioning pins 25, the plurality of mold strips 23 are positioned and installed at the preset position of the lower mold groove 221. Furthermore, by setting the second positioning hole 2311 and the second positioning pin 25, the mold strip 23 can be detachably installed in the lower mold groove 221. Since the shape of the lens molding groove 2321 is the shape of the lens formed by the glue solidification, when it is necessary to mold lenses of different shapes (such as arc, ellipse, irregular ellipse, etc., in this embodiment, irregular ellipse) on the surface of the bracket semi-finished product 12, or when it is necessary to mold a corresponding number of lenses according to the number of packaging grooves on the surface of the bracket semi-finished product 12, the mold strip 23 can be disassembled and replaced with a mold strip 23 with a lens molding groove 2321 of a corresponding shape, thereby broadening the application scenarios. Furthermore, since the mold strip 23 is a consumable, it will be damaged after long-term use, and the detachable setting can be disassembled and replaced after the mold strip 23 is damaged, saving the material cost of remanufacturing the upper mold plate 21 and the lower mold plate 22. Specifically, the mold strip 23 includes a mold strip main body 231 and a plurality of lens molding bodies 232. The mold strip main body 231 is provided with a plurality of mounting holes arranged in sequence and spaced apart from each other. The plurality of lens molding bodies 232 are respectively installed in the plurality of mounting holes. Each lens molding body 232 is provided with a lens molding groove 2321. The second positioning hole 2311 is provided on the surface of the mold strip main body 231 near the side.

[0029] Re-reference Figure 3-Figure 6 Preferably, at least two guide pins 222 are provided on the surface of the lower template 22, and guide holes 211 are provided at positions of the upper template 21 corresponding to the guide pins 222. In specific applications, in this embodiment, the number of guide pins 222 and guide holes 211 are both two, and the two guide pins 222 are respectively provided at diagonal positions of the lower template 22, and the two guide holes 211 are respectively provided at diagonal positions of the upper template 21. Through the provision of the guide pins 222 and the guide holes 211, the upper template 21 and the lower template 22 can be accurately molded, so that the upper template 21 presses the bracket bearing plate 11 against the surface of the mold strip 23, and the surface of the bracket semi-finished product 12 extends into the lens molding groove 2321 accordingly.

[0030] Refer to Figure 7 , Figure 7This is a schematic diagram of the structure of the pressure plate in the second embodiment. Preferably, the positioning fixture 2 also includes a pressure plate 26, and the pressure plate 26 is provided with a through hole 261 and a plurality of through holes 262. In specific applications, when the pressure plate 26 covers the surface of the plurality of mold strip bodies 231, the first positioning pin 24 passes through the through hole 261, and the plurality of lens forming bodies 232 are respectively located in the plurality of through holes 262. The through hole 262 is in the shape of a long strip, and the plurality of through holes 262 are arranged in parallel and spaced in sequence along the length direction of the lower mold plate 22. The plurality of lens forming bodies 232 in the same column are all accommodated in the same through hole 262, so that the pressure plate 26 also plays a role in assisting in positioning the position of the lens forming body 232. At the same time, when the pressure plate 26 covers the surfaces of multiple mold strip bodies 231, the pressure plate 26 supports the bracket supporting plate 11, and the surface of the bracket semi-finished product 12 enters the through hole 262 and extends into the lens molding groove 2321 accordingly. It should be noted that the surface of the bracket semi-finished product 12 does not extend into the bottom of the lens molding groove 2321. In this way, the depth of the bracket semi-finished product 12 extending into the lens molding groove 2321 can be adjusted by changing the thickness of the pressure plate 26, thereby adjusting the thickness of the molded lens.

[0031] It should be noted that, through the cooperation of the first positioning pin 24 and the first positioning hole 13, it is ensured that when the support bearing plate 11 is placed on the surface of the mold strip 23, the multiple support semi-finished products 12 can correspond one by one and accurately extend into the lens molding groove 2321, ensuring that a lens of a corresponding shape can be accurately molded on the surface of each support semi-finished product 12, thereby improving packaging efficiency and product quality. In addition, through the cooperation of the second positioning pin 25 and the second positioning hole 2311, each mold strip 23 can be accurately positioned and installed at the preset position of the lower mold groove 221. By positioning the mold strip 23 and the support bearing plate 11 respectively, it is ensured that the positions of the multiple support semi-finished products 12 and the multiple lens molding grooves 2321 can accurately form a one-to-one correspondence, thereby ensuring that each lens can be correspondingly molded on the surface of the support semi-finished product 12.

[0032] Embodiment three: Reference Figure 8 , Figure 8 This is a flow chart of the SMD-LED lamp bead packaging process in Example 3. The SMD-LED lamp bead packaging process in this embodiment includes the following steps: S1: Obtain a stent semi-finished product module 1. The stent semi-finished product module 1 includes a plurality of stent semi-finished products 12, each stent semi-finished product 12 having a packaging groove. In specific applications, the stent semi-finished product module 1 in this embodiment is of the style of the first embodiment, and is prepared by sequentially undergoing injection molding, crystal bonding, and wire bonding processes, and opening a first positioning hole 13 on the side of each column of stent semi-finished products 12, which will not be described in detail here.

[0033] S2: Obtain a positioning jig 2. The positioning jig 2 includes an upper mold plate 21, a lower mold plate 22, and a mold strip 23. The mold strip 23 is disposed on the lower mold plate 22, and a plurality of lens molding grooves 2321 are provided on the surface of the mold strip 23. In specific applications, the shape of the lens molding groove 2321 is the shape of the lens to be molded on the surface of the bracket semi-finished product 12. The positioning jig 2 in this embodiment is the style of the second embodiment.

[0034] Preferably, step S2 includes the following sub-steps: S21: Select the corresponding mold strip 23 according to the shape of the lens to be molded, wherein the mold strip 23 has a lens molding groove 2321 that matches the shape of the lens. In specific applications, since the shape of the lens molding groove 2321 is the shape of the lens formed by the curing of the glue, when it is necessary to mold lenses of different shapes (such as arc, ellipse, irregular ellipse, etc.) on the surface of the bracket semi-finished product 12, or when it is necessary to mold a corresponding number of lenses according to the number of packaging grooves on the surface of the bracket semi-finished product 12, it is only necessary to determine the type of lens molding groove 2321 required according to the type of lens to be molded, so as to select the mold strip 23 with the corresponding lens molding groove 2321, so that the effect of molding lenses of different shapes and numbers can be achieved by only replacing the mold strip 23, which broadens the application scenarios and greatly saves the mold manufacturing cost compared with the method of injecting glue to mold lenses. Specifically, the mold strip 23 includes a mold strip body 231 and a plurality of lens forming bodies 232. The mold strip body 231 is provided with a plurality of mounting holes arranged in sequence. The plurality of lens forming bodies 232 are respectively installed in the plurality of mounting holes. Each lens forming body 232 is provided with a lens forming groove 2321. The second positioning hole 2311 is provided on the surface of the mold strip body 231 near the side. It can be understood that the mold strip body 231 is a metal part obtained by stamping, and the lens forming body 232 can be obtained by mold injection. The lens forming body is provided with a lens forming groove 2321. The lens forming body 232 is a consumable. When it is needed, the corresponding lens forming body 232 is selected according to the shape of the required molded lens, wherein the lens forming body 232 has a lens forming groove 2321 that matches the shape of the lens. The required mold strip 23 can be assembled by installing the lens forming body 232 in the mounting hole, thereby improving the adaptability.

[0035] S22: Select the lower template 22, which has a lower mold groove 221 capable of visually carrying the mold strip 23. In specific application, a groove is provided on the side of the lower template 22 facing the upper template 21, the lower mold groove 221 is in the form of a long strip, and a plurality of lower mold grooves 221 are arranged side by side in the groove at intervals, each lower mold groove 221 corresponds to a row of lens molding bodies 232, and the lower mold groove 221 is used for the partial structure of the lens molding body 232 passing through the mold strip body 231 and extending to the bottom of the mold strip body 231, and assisting in positioning the mold strip body 231.

[0036] S23: Install multiple mold strips 23 in the lower mold groove 221 respectively. In specific applications, since each mold strip 23 has two rows of lens molding bodies 232, each mold strip 23 corresponds to two lower mold grooves 221. Both sides of each mold strip body 231 in the length direction are provided with second positioning holes 2311, and the lower mold plate 22 is provided with multiple second positioning pins 25, and the multiple second positioning pins 25 are evenly divided into two rows, and the two rows of second positioning pins 25 are respectively close to the opposite side walls of the lower mold groove 221. Through the cooperation and guidance of the second positioning holes 2311 and the second positioning pins 25, the multiple mold strips 23 are positioned and installed at the preset position of the lower mold groove 221, ensuring the accuracy of the position of the mold strip 23, thereby ensuring that the multiple lens molding grooves 2321 are accurately located at the preset position of the lower mold groove 221. At the same time, each mold strip body 231 is positioned at both ends by two second positioning pins 25, which also prevents the mold strip body 231 from shaking, further improving the accuracy of the position.

[0037] S24: Cover the pressing plate 26 on the surfaces of the plurality of mold strip bodies 231, so that the first positioning pin 24 passes through the through hole 261, and the plurality of lens forming bodies 232 are respectively located in the plurality of through holes 262. Through the setting of the pressing plate 26, the pressing plate 26 also plays a role in assisting the positioning of the lens forming body 232. At the same time, when the pressing plate 26 covers the surfaces of the plurality of mold strip bodies 231, the pressing plate 26 plays a supporting role for the bracket bearing plate 11. The surface of the bracket semi-finished product 12 enters the through hole 262 and extends into the lens forming groove 2321 accordingly. It should be particularly noted that the surface of the bracket semi-finished product 12 does not extend into the bottom of the lens forming groove 2321. In this way, the depth of the bracket semi-finished product 12 extending into the lens forming groove 2321 can be adjusted by changing the thickness of the pressing plate 26, thereby adjusting the thickness of the formed lens.

[0038] S25: Select the upper template 21 that matches the lower template 22 to obtain the positioning fixture 2. In specific application, two guide pins 222 are provided on the surface of the lower template 22, and two guide holes 211 are provided at the positions of the upper template 21 corresponding to the guide pins 222. The upper template 21 is molded with the lower template 22 through the cooperation and guidance of the guide pins 222 and the guide holes 211. Through the setting of the guide pins 222 and the guide holes 211, the upper template 21 and the lower template 22 can be accurately molded, that is, the upper template 21 can only move in the vertical direction relative to the lower template 22, avoiding the horizontal displacement of the upper template 21 to cause the displacement of the bracket semi-finished product module 1, and further ensuring that the surface of the bracket semi-finished product 12 can be accurately pressed into the lens molding groove 2321.

[0039] S3: Dispense glue in the packaging grooves of multiple lens molding grooves 2321 and multiple bracket semi-finished products 12 respectively. In specific applications, the glue in the packaging groove of the bracket semi-finished product 12 is used to seal the packaging groove after it is melted, so as to seal the LED chip in the packaging groove. The glue in the lens molding groove 2321 is used to mold a lens on the surface of the bracket semi-finished product 12 after it is melted. It can be understood that the shape of the lens molding groove 2321 is the shape of the lens. In this way, it is possible to mold a lens on the surface of the bracket semi-finished product 12 without injecting glue, and there is no need to create a high-cost glue injection mold, thereby reducing production costs.

[0040] Preferably, before step S3, step S30 is also included: preliminary glue dispensing is performed in the packaging grooves of multiple bracket semi-finished products 12, the preliminary glue dispensing is baked and cured, and the chip in the packaging groove is sealed after the glue is melted. In specific applications, glue dispensing is performed twice in the packaging grooves of the bracket semi-finished products 12, of which the first time is preliminary glue dispensing, in order to first stably seal the LED chip in the packaging groove to avoid the LED chip falling out of the packaging groove or the position shifting when the bracket semi-finished product module 1 is flipped later, thereby improving product quality. During the second glue dispensing, the glue dispensed for the first time has been melted, and the glue after the two glue dispensings just forms a packaging structure flush with the packaging groove bayonet after melting, and the glue dispensed in the packaging groove for the second time is connected to the glue in the lens forming groove 2321, so that after melting, the formed packaging structure and the lens are closely connected, and there is no gap in between, thereby avoiding the uncontrollable refraction of light due to the uncontrollable shape of the gap, thereby improving product quality.

[0041] S4: Flip the bracket semi-finished product module 1, and make the packaging grooves of multiple bracket semi-finished products 12 face each other one by one with multiple lens forming grooves 2321. In specific application, since the volume of each bracket semi-finished product 12 is small, the specification is "2835" in this embodiment, that is, 28mm wide and 35mm long, and each bracket semi-finished product 12 includes three packaging grooves, and the bottom of the lens forming groove 2321 is correspondingly provided with three irregular elliptical grooves. It is necessary to ensure that each packaging groove can face each irregular elliptical groove one by one. The precision requirements for the position of the bracket semi-finished product module 1 and the lens forming groove 2321 are relatively high. In this embodiment, the number of lens forming grooves 2321 is equal to the number of bracket semi-finished products 12, and the arrangement and distribution method is also the same. Therefore, it is necessary to first make the packaging grooves of multiple bracket semi-finished products 12 form a one-to-one relationship with multiple lens forming grooves 2321 to avoid the situation of missing rows or columns due to misalignment. Of course, in other embodiments, the number of packaging grooves on each bracket semi-finished product 12 can also be one, two or more, which is not limited here.

[0042] S5: Connect the packaging grooves of the multiple bracket semi-finished products 12 to the multiple lens molding grooves 2321 one by one. In specific applications, when the bracket carrier plate 11 is covered on the surface of the pressure plate 26, the bracket carrier plate 11 is accurately positioned through the cooperation of the first positioning pin 24 and the first positioning hole 13 to ensure that each bracket semi-finished product 12 can be accurately located at the preset position, that is, the packaging grooves of the multiple bracket semi-finished products 12 are respectively opposite to the multiple lens molding grooves 2321 one by one, specifically, each packaging groove is opposite to an irregular elliptical groove, at this time, the glue in the packaging groove and the glue in the lens molding groove 2321 are mutually adhered and connected, and the stability of the position of the bracket semi-finished product 12 is also improved.

[0043] Preferably, step S5 further includes the following sub-steps: S51 : Make the plurality of first positioning pins 24 correspond to and face the plurality of first positioning holes 13 one by one.

[0044] S52: Multiple first positioning pins 24 are respectively inserted into multiple first positioning holes 13. By setting the first positioning pins 24 and the first positioning holes 13, it is ensured that when the bracket bearing plate 11 is placed on the surface of the pressure plate 26, the multiple bracket semi-finished products 12 can correspond to the multiple lens molding grooves 2321 one by one, ensuring that lenses of corresponding shapes can be accurately molded on the surface of each bracket semi-finished product 12, thereby improving packaging efficiency and product quality. At the same time, the setting of multiple first positioning pins 24 can also play a role in fixing the position of the bracket bearing plate 11, avoiding the position shift of the bracket bearing plate 11 during the subsequent melting process, thereby avoiding the position shift of the molded lens and improving product quality.

[0045] S53: Connect the packaging grooves of the plurality of bracket semi-finished products 12 to the plurality of lens forming grooves 2321 one by one.

[0046] S6: The upper template 21 is molded with the lower template 22, so that the bracket semi-finished product module 1 is pressed against the mold strip 23, and multiple bracket semi-finished products 12 are respectively extended into multiple lens molding grooves 2321 one by one. In specific applications, the upper template 21 is molded with the lower template 22 through the matching guidance of the guide pin 222 and the guide hole 211. Through the setting of the guide pin 222 and the guide hole 211, the upper template 21 and the lower template 22 can be accurately molded, that is, the upper template 21 can only move in the vertical direction relative to the lower template 22, avoiding the horizontal displacement of the upper template 21 to cause the bracket semi-finished product module 1 to move, and further ensuring that the surface of the bracket semi-finished product 12 can be accurately pressed into the lens molding groove 2321. It should be particularly noted that through the setting of the second positioning pin 25 and the second positioning hole 2311, each mold strip 23 can be accurately positioned and installed at the preset position of the lower mold groove 211. As for the multiple lens molding grooves 2321 in the same column, the spacing between two adjacent lens molding grooves 2321 is the same as the spacing between two adjacent bracket semi-finished products 12 in the same column on the bracket semi-finished product module 1. Specifically, it can be achieved by controlling the spacing between two adjacent mounting holes to be the same as the spacing between two adjacent bracket semi-finished products 12 in the same column on the bracket semi-finished product module 1. At the same time, as for the multiple lens molding grooves 2321 in the same row, the spacing between two adjacent lens molding grooves 2321 is the same as the spacing between two adjacent bracket semi-finished products 12 in the same row on the bracket semi-finished product module 1. Specifically, it can be controlled by the coordinated positioning of the second positioning pin 25 and the second positioning hole 2311, thereby ensuring that the positions of the multiple bracket semi-finished products 12 and the multiple lens molding grooves 2321 are in a one-to-one correspondence, thereby improving product quality.

[0047] S7: Bake and solidify; the glue in the lens forming groove 2321 is melted and solidified on the surface of the bracket semi-finished product 12 to form a lens. In specific applications, the molded positioning fixture 2 is placed in a baking oven for solidification, wherein the glue dispensed in the packaging groove is solidified to form a packaging structure for sealing the packaging groove and sealing the LED chip inside the packaging groove, and the glue dispensed in the lens forming groove 2321 is solidified to form a lens of corresponding shape on the surface of the bracket semi-finished product 12, that is, on the surface of the packaging structure.

[0048] Preferably, step S70 is also included before step S7: vacuum treatment is performed on the lens molding groove 2321 and the packaging groove to remove bubbles in the glue. In specific applications, bubbles will be generated both in the dispensing process and in the process of connecting the glue in the lens molding groove 2321 with the glue in the packaging groove. The generation of bubbles will cause the molded packaging structure or lens to have a cavity, affecting the accuracy of the light. Specifically, the upper template 21 is provided with a vacuum processing hole, which is respectively connected to the vacuum pump and the groove of the lower template 22. The bubbles in the glue are effectively removed by vacuum treatment, so that the colloid in the lens molding groove 2321 and the packaging groove is more uniform, thereby ensuring that the molded packaging structure and the structure of the lens are more complete, thereby improving product quality.

[0049] S8: Demolding and stripping. In specific applications, a demoulding jig matched with the positioning jig 2 is used to demould the molded SMD-LED lamp beads from the mirror molding groove 2321, and then the multiple SMD-LED lamp beads are cut off from the bracket bearing plate 11 by cutting and stripping.

[0050] S9: Get multiple SMD-LED lamp beads.

[0051] In summary, by dispensing glue in the packaging grooves of multiple lens molding grooves 2321 and multiple bracket semi-finished products 12, the glue in the packaging groove is melted to form a sealing structure in the packaging groove to seal the LED chip in the packaging groove, and the glue in the lens molding groove 2321 is melted to form a lens on the surface of the bracket semi-finished product 12. In this way, a lens can be formed on the surface of the bracket semi-finished product 12 without the need for a glue injection process, eliminating the high cost of making the glue injection mold and reducing production costs. At the same time, through the cooperation of the first positioning pin 24 and the first positioning hole 13, it is ensured that when the bracket carrier plate 11 is placed on the surface of the mold strip 23, multiple bracket semi-finished products 12 can be accurately extended into the lens molding groove 2321 one by one, ensuring that a lens of a corresponding shape can be accurately formed on the surface of each bracket semi-finished product 12, thereby improving packaging efficiency and product quality. In addition, through the cooperation of the second positioning pin 25 and the second positioning hole 2311, each mold strip 23 can be accurately positioned and installed at the preset position of the lower mold groove 221. By positioning the mold strip 23 and the bracket bearing plate 11 respectively, it is ensured that the positions of multiple bracket semi-finished products 12 and multiple lens molding grooves 2321 can accurately form a one-to-one correspondence, thereby ensuring that each lens can be correspondingly molded on the surface of the bracket semi-finished product 12.

[0052] Embodiment 4: The SMD-LED lamp bead in this embodiment is made using the SMD-LED lamp bead packaging process in Example 3. Specifically, the SMD-LED lamp bead includes a bracket body, three monochrome chips and a lens body. The surface of the bracket body is provided with three accommodating cavities arranged in a linear interval. The three monochrome chips are respectively arranged in the three accommodating cavities. The lens body includes a lens cover and three lenses respectively arranged on the lens cover, and the lens cover is provided on the surface of the bracket body, and the three lenses respectively cover the three monochrome chips.

[0053] In summary, by dispensing glue in the packaging grooves of multiple lens molding grooves 2321 and multiple bracket semi-finished products 12, the glue in the packaging groove is melted to form a sealing structure in the packaging groove to seal the LED chip in the packaging groove, and the glue in the lens molding groove 2321 is melted to form a lens on the surface of the bracket semi-finished product 12. In this way, the lens can be molded on the surface of the bracket semi-finished product 12 without the need for a glue injection process, eliminating the high cost of making the glue injection mold and reducing production costs. At the same time, through the cooperation of the first positioning pin 24 and the first positioning hole 13, it is ensured that when the bracket carrier plate 11 is placed on the surface of the mold strip 23, the multiple bracket semi-finished products 12 can be accurately extended into the lens molding groove 2321 one by one, ensuring that a lens of a corresponding shape can be accurately molded on the surface of each bracket semi-finished product 12, thereby improving packaging efficiency and product quality. In addition, through the cooperation of the second positioning pin 25 and the second positioning hole 2311, each mold strip 23 can be accurately positioned and installed at the preset position of the lower mold groove 221. By positioning the mold strip 23 and the bracket supporting plate 11 respectively, it is ensured that the positions of multiple bracket semi-finished products 12 and multiple lens molding grooves 2321 can accurately form a one-to-one correspondence, thereby ensuring that each lens can be correspondingly molded on the surface of the bracket semi-finished product 12.

[0054] The above is only the implementation mode of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A SMD-LED lamp bead packaging process, characterized in that: include: Obtaining a stent semi-finished product module (1); the stent semi-finished product module (1) comprises a plurality of stent semi-finished products (12), and the stent semi-finished products (12) have packaging grooves; A positioning jig (2) is obtained; the positioning jig (2) comprises an upper mold plate (21), a lower mold plate (22) and a mold strip (23); the mold strip (23) is arranged on the lower mold plate (22); and the surface of the mold strip (23) has a plurality of lens molding grooves (2321); Dispensing glue in the packaging grooves of the plurality of lens molding grooves (2321) and the plurality of bracket semi-finished products (12) respectively; Turning over the bracket semi-finished product module (1), and making the packaging grooves of the plurality of bracket semi-finished products (12) face the plurality of lens forming grooves (2321) one by one; Connecting the packaging grooves of the plurality of bracket semi-finished products (12) to the plurality of lens forming grooves (2321) in a one-to-one correspondence; The upper mold plate (21) is molded on the lower mold plate (22) so that the bracket semi-finished product module (1) is pressed on the mold strip (23), and the plurality of bracket semi-finished products (12) are respectively extended into the plurality of lens molding grooves (2321) in a one-to-one correspondence; Baking and curing; the glue in the lens forming groove (2321) is melted and solidified on the surface of the bracket semi-finished product (12) to form a lens; Demoulding and stripping; Get multiple SMD-LED lamp beads.

2. The SMD-LED lamp bead packaging process according to claim 1, characterized in that: The positioning fixture (2) further comprises a plurality of first positioning pins (24), wherein the plurality of first positioning pins (24) are arranged on the surface of the lower template (22), and the bracket semi-finished product module (1) is provided with a plurality of first positioning holes (13) at positions corresponding to the plurality of first positioning pins (24); The step of connecting the packaging grooves of the plurality of the bracket semi-finished products (12) to the plurality of the lens forming grooves (2321) in a one-to-one correspondence comprises the following sub-steps: The plurality of first positioning pins (24) are respectively aligned with the plurality of first positioning holes (13); A plurality of the first positioning pins (24) are respectively inserted into a plurality of the first positioning holes (13); The packaging grooves of the plurality of bracket semi-finished products (12) are respectively connected to the plurality of lens forming grooves (2321) in a one-to-one correspondence.

3. The SMD-LED lamp bead packaging process according to claim 2, characterized in that: The surface of the lower mold plate (22) is provided with a plurality of lower mold grooves (221), the plurality of mold strips (23) are respectively installed in the plurality of lower mold grooves (221), and the surface of each mold strip (23) is provided with a plurality of lens molding grooves (2321); The step of obtaining a positioning fixture (2) includes the following sub-steps: Selecting a corresponding mold strip (23) according to the shape of the desired molded lens, wherein the mold strip (23) has a lens molding groove (2321) adapted to the shape of the lens; Selecting a lower template (22), wherein the lower template (22) has a lower mold groove (221) capable of visually carrying the mold strip (23); Installing the plurality of mold strips (23) respectively and correspondingly in the lower mold grooves (221); An upper template (21) adapted to the lower template (22) is selected to obtain a positioning jig (2).

4. The SMD-LED lamp bead packaging process according to claim 3, characterized in that: Each of the mold strips (23) is provided with a second positioning hole (2311), and the positioning fixture (2) further comprises a plurality of second positioning pins (25), and the plurality of second positioning pins (25) are respectively arranged in the lower mold groove (221); When the plurality of mold strips (23) are respectively installed in the lower mold groove (221), the plurality of mold strips (23) are positioned and installed at preset positions of the lower mold groove (221) through the cooperation and guidance of the second positioning holes (2311) and the second positioning pins (25).

5. The SMD-LED lamp bead packaging process according to claim 4, characterized in that: The surface of the lower template (22) is provided with at least two guide pins (222), and the upper template (21) is provided with guide holes (211) at positions corresponding to the guide pins (222); The upper mold plate (21) is molded together with the lower mold plate (22) through the matching guidance of the guide pin (222) and the guide hole (211).

6. The SMD-LED lamp bead packaging process according to claim 5, characterized in that: The following steps are also included before the baking and curing step: The lens molding groove (2321) and the packaging groove are subjected to vacuum treatment to remove bubbles in the glue.

7. The SMD-LED lamp bead packaging process according to claim 3, characterized in that: The mold strip (23) comprises a mold strip body (231) and a plurality of lens forming bodies (232); the mold strip body (231) is provided with a plurality of mounting holes arranged in sequence and at intervals; the plurality of lens forming bodies (232) are respectively installed in the plurality of mounting holes; each of the lens forming bodies (232) is provided with a lens forming groove (2321); and the second positioning hole (2311) is provided at a position close to the side edge of the surface of the mold strip body (231); The step of selecting a corresponding mold strip (23) according to the shape of the desired molded lens comprises the following sub-steps: Selecting a corresponding lens molding body (232) according to the shape of the desired molded lens, wherein the lens molding body (232) has a lens molding groove (2321) adapted to the shape of the lens; Installing the plurality of lens forming bodies (232) in the plurality of mounting holes accordingly; The mold strip (23) corresponding to the desired molded lens shape is obtained.

8. The SMD-LED lamp bead packaging process according to claim 7, characterized in that: The positioning fixture (2) further comprises a pressing plate (26), wherein the pressing plate (26) is provided with a through hole (261) and a plurality of through holes (262); After the step of respectively installing the plurality of mold strips (23) in the lower mold grooves (221), the method further includes the following steps: The pressing plate (26) is covered on the surfaces of the plurality of mold strips (23), and the first positioning pin (24) is passed through the through hole (261), and the plurality of lens forming bodies (232) are respectively located in the plurality of through holes (262).

9. The SMD-LED lamp bead packaging process according to claim 1, characterized in that: Before the step of dispensing glue in the packaging grooves of the plurality of lens molding grooves (2321) and the plurality of bracket semi-finished products (12), the following steps are also included: Performing preliminary glue dispensing in the packaging grooves of a plurality of the semi-finished bracket products (12); The initial glue is dispensed after baking and curing, and the chip in the packaging groove is sealed after the glue is melted.

10. An SMD-LED lamp bead, characterized in that: It is prepared using the SMD-LED lamp bead packaging process as described in any one of claims 1-9.

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