A kind of UV glue for LED packaging and preparation method thereof

Abstract

The present invention discloses a UV glue for LED packaging and a preparation method thereof, comprising the following steps: putting raw materials into the inner cavity of a mixing tank through a feed port, setting a heating temperature, moving a stirring component to a suitable position, starting a motor, driving a gear to mesh with a gear sleeve to rotate a driving sleeve, stirring the raw materials, and then controlling the stirring component to move back and forth, defoaming while stirring, and after the mixing is completed, turning off the motor, controlling the stirring component to move upward to filter the mixed liquid, and finally controlling an electric telescopic rod to reciprocate and telescope, completing the cleaning of the equipment, and the discharged mixture is cured and packaged to become a finished UV glue product. The entire preparation process is simple, and a one-pot method for preparing UV glue is realized, which greatly reduces the material loss caused by the transfer of the mixed liquid between various processes, reduces the amount of bubbles in the UV glue, and improves the transparency of the UV glue.

Description

Technical Field

[0001] The invention relates to the technical field of LED packaging, in particular to a UV glue for LED packaging and a preparation method thereof. Background Art

[0002] LED packaging is to connect the external leads to the electrodes of the LED chip, protect the LED chip, and improve the light extraction efficiency. Its packaging forms are divided into Lamp-LED, TOP-LED, Side-LED, SMD-LED, High-Power-LED, etc. according to different application occasions, using corresponding external dimensions, heat dissipation measures and light-emitting effects. UV glue is the most commonly used adhesive for LED packaging. The quality of UV glue has an important impact on the qualified rate of LED packaging and the service life of the subsequent products.

[0003] The existing preparation of UV glue requires multiple processes such as mixing, filtering, and defoaming. The preparation of UV glue requires the cooperation of multiple equipment, which has high requirements on equipment investment and production space. In addition, UV glue has a large viscosity and is prone to uneven product quality due to uneven mixing, affecting later use. When it flows between multiple equipment, it will cause a large amount of raw material loss, increasing the cost of UV glue preparation. Summary of the invention

[0004] The object of the present invention is to provide a UV glue for LED packaging and a preparation method thereof, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides a UV glue for LED packaging and a preparation method thereof, comprising the following steps:

[0006] 1. Equipment preparation stage:

[0007] S1. Assemble the stirring mechanism, place the mounting plate at the lower end of the defoaming net in the fixing groove, place the second fixing plate on the upper end surface of the mounting plate and push it into the fixing groove, fix the mounting plate in the fixing groove, place the mounting plate at the upper end of the defoaming net in the receiving groove, and use the first fixing plate to fix the mounting plate in the receiving groove. Similarly, install other groups of defoaming components between the defoaming plate and the stirring component;

[0008] The stirring mechanism comprises a driving shaft, the defoaming plate is fixedly connected to the outer wall of the driving shaft, the stirring assembly is slidably connected to the outer wall of the driving shaft, and a plurality of groups of the defoaming assemblies are installed at intervals at positions adjacent to the defoaming plate and the stirring assembly.

[0009] The lower end surface of the defoaming orifice plate is provided with a mounting hole, a plurality of groups of the accommodating grooves are spaced apart on the lower end surface of the defoaming orifice plate, the first fixing plate is slidably connected in the accommodating groove, the stirring assembly comprises a filtering orifice plate, a plurality of groups of the fixing grooves are spaced apart on the upper end surface of the filtering orifice plate, the second fixing plate is slidably connected in the fixing groove, and the fixing groove corresponds to the position of the accommodating groove;

[0010] 2. Raw materials preparation stage:

[0011] S2. Accurately weigh the raw materials of the required proportion and put the raw materials into the inner cavity of the mixing tank through the feed port;

[0012] S3, setting the mixing temperature in the kettle through the control component, and turning on the heating to heat the raw materials to the set temperature;

[0013] 3. UV glue mixing preparation stage:

[0014] S4, at the initial stage of preparation, the spline is moved to the first position to mesh with the tooth groove, the electric telescopic rod is working, the tooth groove is meshed with the spline by controlling the movement of the slider, the spline drives the driving rod to rotate, the stirring assembly is moved to a suitable height through the nut, the electric telescopic rod stops working, the spline is pushed into the driving sleeve, at this time the spline is in the second position, the driving rod and the driving sleeve remain relatively still, the motor is started, the driving gear meshes with the gear sleeve to rotate the driving sleeve, the driving sleeve drives the stirring assembly to rotate, and the raw materials are stirred;

[0015] Three groups of stirring plates are fixedly connected to the lower end surface of the filter plate at intervals. When the stirring assembly rotates, the stirring plates stir and mix the raw materials.

[0016] S5, in the later stage of preparation, the spline is moved to the first position, the electric telescopic rod works to push the slider to move back and forth, the tooth groove is meshed with the spline, so that the spline drives the driving rod to rotate back and forth, and due to the speed difference between the driving rod and the driving sleeve, when the driving rod rotates in the opposite direction or the speed is less than the driving sleeve, the nut moves upward, and when the driving rod and the driving sleeve are in the same direction and the speed is greater than the driving sleeve, the nut moves downward, and the nut drives the stirring component to move back and forth in the vertical direction while stirring the mixture. During the reciprocating movement of the stirring component, the upper end surface of the stirring component contacts the lower end surface of the defoaming plate to squeeze the bubbles, thereby defoaming the mixed solution, and at the same time, the defoaming component rotates with the stirring component to break the bubbles in the solution;

[0017] S6. After the mixing is completed, the motor is turned off, the electric telescopic rod is controlled to work, and the driving rod is rotated to move the upper end surface of the stirring assembly to a position where it is in contact with the lower end surface of the defoaming plate. At this time, the defoaming assembly is stored in the receiving tank, and the filter plate moves upward to squeeze out the liquid attached to the defoaming assembly and filter the mixed liquid. The filtered liquid flows out from the discharge port at the bottom of the mixing tank;

[0018] S7, control the electric telescopic rod to reciprocate and retract, and the driving rod to reciprocate, so that the stirring assembly moves back and forth between the bottom of the tank body cavity and the lower end surface of the defoaming plate to scrape off the attachments on the inner wall of the tank body, and then move the stirring assembly to the lower end surface to contact the bottom of the tank body, move the spline to the second position, and the motor controls the stirring assembly to rotate, and the stirring plate scrapes off the attachments on the bottom of the tank body and pushes it to the discharge port, completing the cleaning of the equipment;

[0019] 4. UV glue curing stage:

[0020] S8, placing the mixed UV glue under a UV lamp, and selecting different light intensities and light exposure times according to the required curing strength to cure the UV glue;

[0021] 5. UV glue packaging stage:

[0022] S9. The produced glue is packaged with specific packaging materials and packed into boxes to obtain the finished UV glue product.

[0023] As a further improvement of the technical solution, the mixing tank includes a tank body, a side wall of the tank body is provided with an interlayer, a heating coil is installed in the interlayer, and the heating coil is electrically connected to the control component.

[0024] As a further improvement of the present technical solution, the driving mechanism includes a mounting frame, an electric telescopic rod is installed on the inner wall of the mounting frame, a slider is slidably connected to the top of the mounting frame, a tooth groove is provided on the front end surface of the slider, the tooth groove is engaged with the spline, and the extended end of the electric telescopic rod is fixedly connected to the side wall of the slider.

[0025] As a further improvement of the present technical solution, the drive shaft includes a drive sleeve and a nut, the outer wall of the drive sleeve is fixedly connected to a gear sleeve, the gear sleeve is meshed with the drive gear, a drive rod is rotatably connected inside the drive sleeve, the top of the drive rod extends out of the drive sleeve and is connected to the spline, a thread is formed on the outer wall of the drive rod, and the nut is installed on the outer wall of the drive rod and is threadedly connected to the thread.

[0026] As a further improvement of the technical solution, the inner wall of the accommodating groove and the outer wall of the first fixing plate are both provided with a first anti-slip groove, and the depth of the accommodating groove is greater than the thickness of the first fixing plate.

[0027] As a further improvement of the technical solution, a avoidance hole is provided on the lower end surface of the filter plate, and a connecting rod is fixedly connected to one end of several groups of stirring plates close to the avoidance hole. The connecting rod extends into the interior of the drive sleeve and is fixedly connected to the nut at one end away from the stirring plate.

[0028] As a further improvement of the technical solution, the outer wall of the drive sleeve is provided with a plurality of slide grooves, in which slide rods are fixedly connected, and the outer wall of the drive sleeve is provided with a plurality of installation grooves, in which the connecting rods are slidably connected.

[0029] As a further improvement of the technical solution, the inner wall of the fixing groove and the outer wall of the second fixing plate are both provided with a second anti-slip groove, and the size of the second fixing plate is adapted to the fixing groove.

[0030] As a further improvement of the technical solution, two groups of mounting plates are respectively fixedly connected to the upper and lower ends of the defoaming net, and the defoaming net is provided with a plurality of sliding holes spaced apart on one side close to the driving sleeve, and the plurality of sliding holes are slidably connected to the outer wall of the sliding rod.

[0031] A UV glue for LED packaging, prepared by the preparation method described in any one of claims 1 to 4.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. In a UV glue for LED packaging and a preparation method thereof, a driving mechanism and a stirring mechanism are provided, a driving gear meshes with a gear sleeve to drive a driving sleeve to rotate, and when the driving sleeve rotates, the stirring assembly is driven to rotate, and a plurality of stirring plates rotate to stir the mixture. The spline is located on the inner wall of the driving sleeve, so that the driving rod and the driving sleeve remain relatively still, thereby improving the stability of the rotation of the stirring plate. When the spline is moved to the first position, the spline meshes with the tooth groove, and the electric telescopic rod drives the slider to move back and forth, so that there is a speed difference between the driving rod and the driving sleeve, so that the stirring assembly rotates and moves up and down at the same time, and bubbles in the mixed liquid are broken. After the mixing is completed, the stirring assembly is moved upward to filter the mixed liquid, so that the synthesis, defoaming and filtration of the UV glue are completed, and the one-pot preparation of the UV glue is realized, which simplifies the preparation process and greatly reduces the material loss caused by the transfer of the mixed liquid between the processes.

[0034] 2. In a UV glue for LED packaging and a preparation method thereof, a stirring mechanism is provided, and an electric telescopic rod drives the slider to move back and forth, so that there is a speed difference between the driving rod and the driving sleeve. Since the connecting rod passes through the mounting groove and is fixed on the outer wall of the nut, the rotation speed of the nut and the driving sleeve is consistent, which is equivalent to a relative rotation speed between the nut and the driving rod. By controlling the rotation direction of the spline, the nut is forward and reversed relative to the driving rod, so that the nut drives the filter plate to move up and down. When the filter plate moves, the bubbles in the mixed liquid pass through the filter plate to break and become smaller. At the same time, the defoaming net at the upper end of the stirring component filters and defoams the mixed liquid. When the upper end face of the filter plate moves to the lower end face of the defoaming plate, the small bubbles are further squeezed and discharged through the defoaming plate. The mixed liquid is filtered and discharged through the filter plate, which further reduces the content of impurities in the mixed liquid, reduces the amount of bubbles in the UV glue, and improves the transparency of the UV glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the overall assembly structure of Example 1;

[0036] Figure 2 This is a schematic diagram of the cross-sectional structure of the overall assembly of Example 1;

[0037] Figure 3 This is a schematic diagram of the driving mechanism structure of Example 1;

[0038] Figure 4 This is a schematic diagram of the stirring mechanism structure of Example 1;

[0039] Figure 5 This is a schematic diagram of the cross-sectional structure of the drive shaft portion of Example 1;

[0040] Figure 6 For Example 1 Figure 5 A is an enlarged structural diagram;

[0041] Figure 7 It is a schematic diagram of the structure of the defoaming plate of Example 1;

[0042] Figure 8 This is a schematic diagram of the bottom structure of the stirring assembly of Example 1;

[0043] Fig. 9 This is a schematic diagram of the top structure of the stirring assembly of Example 1;

[0044] Fig.10 This is a schematic diagram of the defoaming component structure of Example 1.

[0045] The meaning of each number in the figure is:

[0046] 1 mixing tank, 11 tank body, 12 heating coil, 2 driving mechanism, 21 mounting frame, 22 slider, 23 tooth groove, 24 electric telescopic rod, 25 driving gear, 26 motor, 3 stirring mechanism, 31 driving shaft, 311 spline, 312 driving rod, 313 gear sleeve, 314 driving sleeve, 315 thread, 316 slide groove, 317 slide rod, 318 nut, 319 mounting groove, 32 defoaming plate, 321 mounting hole, 322 defoaming hole plate, 323 accommodating groove, 324 first anti-skid groove, 325 first fixed plate, 33 defoaming component, 331 slide hole, 332 defoaming net, 333 mounting plate, 34 stirring component, 341 avoidance hole, 342 stirring plate, 343 filter hole plate, 344 connecting rod, 345 fixed groove, 346 second anti-skid groove, 347 second fixed plate, 4 control component. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be understood that the terms "central axis", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0049] Example 1

[0050] The present invention provides a method for preparing UV glue for LED packaging, comprising the following steps:

[0051] 1. Equipment preparation stage:

[0052] S1, assemble the stirring mechanism 3, place the mounting plate 333 at the lower end of the defoaming net 332 in the fixing groove 345, place the second fixing plate 347 on the upper end surface of the mounting plate 333 and push it into the fixing groove 345, fix the mounting plate 333 in the fixing groove 345, place the mounting plate 333 at the upper end of the defoaming net 332 in the receiving groove 323, and use the first fixing plate 325 to fix the mounting plate 333 in the receiving groove 323, and similarly install other groups of defoaming components 33 between the defoaming plate 32 and the stirring component 34;

[0053] The stirring mechanism 3 includes a driving shaft 31, a defoaming plate 32 fixedly connected to the outer wall of the driving shaft 31, a stirring assembly 34 slidably connected to the outer wall of the driving shaft 31, and a plurality of groups of defoaming assemblies 33 are installed at intervals at positions adjacent to the defoaming plate 32 and the stirring assembly 34.

[0054] The lower end surface of the defoaming plate 322 is provided with a mounting hole 321, a plurality of groups of receiving grooves 323 are spaced apart on the lower end surface of the defoaming plate 322, a first fixing plate 325 is slidably connected in the receiving grooves 323, the stirring assembly 34 includes a filtering plate 343, a plurality of groups of fixing grooves 345 are spaced apart on the upper end surface of the filtering plate 343, a second fixing plate 347 is slidably connected in the fixing grooves 345, and the fixing grooves 345 correspond to the receiving grooves 323 in position;

[0055] 2. Raw materials preparation stage:

[0056] S2, accurately weigh the raw materials in the required proportion, and put the raw materials into the inner cavity of the mixing tank 1 through the feed inlet;

[0057] S3, setting the mixing temperature in the kettle through the control component 4, and turning on the heating to heat the raw materials to the set temperature;

[0058] 3. UV glue mixing preparation stage:

[0059] S4, at the initial stage of preparation, the spline 311 is moved to the first position to mesh with the tooth groove 23, the electric telescopic rod 24 is working, the tooth groove 23 is meshed with the spline 311 by controlling the movement of the slider 22, the spline 311 drives the driving rod 312 to rotate, the stirring assembly 34 is moved to a suitable height through the nut 318, the electric telescopic rod 24 stops working, the spline 311 is pushed into the driving sleeve 314, at this time the spline 311 is in the second position, at this time the driving rod 312 and the driving sleeve 314 remain relatively still, the motor 26 is started, the driving gear 25 meshes with the gear sleeve 313 to rotate the driving sleeve 314, the driving sleeve 314 drives the stirring assembly 34 to rotate, and the raw materials are stirred;

[0060] Three groups of stirring plates 342 are fixedly connected to the lower end surface of the filter plate 343 at intervals. When the stirring assembly 34 rotates, the stirring plates 342 stir and mix the raw materials.

[0061] S5. In the later stage of preparation, the spline 311 is moved to the first position, the electric telescopic rod 24 works to push the slider 22 to move back and forth, the tooth groove 23 is meshed with the spline 311, so that the spline 311 drives the driving rod 312 to reciprocate. Due to the speed difference between the driving rod 312 and the driving sleeve 314, when the driving rod 312 rotates in the opposite direction or the speed is less than the driving sleeve 314, the nut 318 moves upward, and when the driving rod 312 and the driving sleeve 314 are in the same direction and the speed is greater than the driving sleeve 314, the nut 318 moves downward, and the nut 318 drives the stirring component 34 to move back and forth in the vertical direction while stirring the mixture. During the reciprocating movement of the stirring component 34, the upper end surface of the stirring component 34 contacts the lower end surface of the defoaming plate 32 to squeeze the bubbles, thereby defoaming the mixed solution, and at the same time, the defoaming component 33 rotates with the stirring component 34 to break the bubbles in the solution;

[0062] S6, after the mixing is completed, the motor 26 is turned off, the electric telescopic rod 24 is controlled to work, the driving rod 312 is rotated, and the upper end surface of the stirring component 34 is moved to a position where it is in contact with the lower end surface of the defoaming plate 32. At this time, the defoaming component 33 is received in the receiving groove 323, and the filter plate 343 moves upward to squeeze out the liquid attached to the defoaming component 33 and filter the mixed liquid. The filtered liquid flows out from the discharge port at the bottom of the mixing tank 1;

[0063] S7, control the electric telescopic rod 24 to reciprocate and retract, and drive the rod 312 to reciprocate, so that the stirring assembly 34 reciprocates between the bottom of the inner cavity of the tank body 11 and the lower end surface of the defoaming plate 32, and scrapes off the attachments on the inner wall of the tank body 11, then move the stirring assembly 34 to the lower end surface to contact the bottom of the tank body 11, move the spline 311 to the second position, and the motor 26 controls the stirring assembly 34 to rotate, and the stirring plate 342 scrapes off the attachments on the bottom of the tank body 11 and pushes it to the discharge port, completing the cleaning of the equipment;

[0064] 4. UV glue curing stage:

[0065] S8, placing the mixed UV glue under a UV lamp, and selecting different light intensities and light exposure times according to the required curing strength to cure the UV glue;

[0066] 5. UV glue packaging stage:

[0067] S9. The produced glue is packaged with specific packaging materials and packed into boxes to obtain the finished UV glue product.

[0068] See also Figures 1 to 10As shown, the present invention provides a method for preparing UV glue for LED packaging, wherein raw materials are put into the mixing tank 1, the spline 311 is moved to the second position, the motor 26 drives the driving gear 25 to rotate, the driving gear 25 is meshed with the gear sleeve 313, so that the gear sleeve 313 drives the driving sleeve 314 to rotate, and the stirring component 34 is driven to rotate through the nut 318 and the installation groove 319 to stir the mixture, and then the spline 311 is moved to the first position, and the electric telescopic rod 24 drives the spline 311 to rotate, so that there is a speed difference between the driving rod 312 and the driving sleeve 314, so that the nut 318 rotates relative to the driving rod 312, thereby driving the stirring component 34 to move up and down, and stirring the mixture. The mixture is defoamed. After the mixing is completed, the motor 26 is turned off, and the driving rod 312 is controlled to rotate by the electric telescopic rod 24, so that the nut 318 on the outer wall of the driving rod 312 drives the stirring assembly 34 to move upward, thereby filtering the mixture in the mixing tank 1, and the filtered mixed liquid is discharged from the discharge port. The electric telescopic rod 24 then controls the stirring assembly 34 to move up and down to clean the inner wall of the mixing tank 1. Finally, the stirring assembly 34 is moved to the bottom of the inner cavity of the mixing tank 1, and the spline 311 is moved to the second position. The motor 26 drives the driving sleeve 314 to drive the stirring assembly 34 to rotate, and the stirring plate 342 at the bottom of the filter hole plate 343 pushes the mixture attached to the bottom of the inner cavity of the mixing tank 1 to the discharge port.

[0069] Specifically, the inner wall of the spline 311 is spline-connected to the outer wall of the driving rod 312, the outer wall of the spline 311 is provided with a tooth groove, the top of the inner wall of the driving sleeve 314 is provided with an inner tooth groove, and the tooth groove of the outer wall of the spline 311 matches the inner tooth groove.

[0070] It should be supplemented that an elastic ring is arranged on the periphery of the defoaming plate 32 and the stirring assembly 34 , and the elastic ring is in contact with the inner wall of the mixing tank 1 , and a discharge port is arranged at the bottom of the inner cavity of the mixing tank 1 .

[0071] Furthermore, the mixing tank 1 includes a tank body 11 , a side wall of the tank body 11 is provided with an interlayer, a heating coil 12 is installed in the interlayer, and the heating coil 12 is electrically connected to the control component 4 .

[0072] Specifically, the heating time and heating temperature of the heating coil 12 can be controlled by the control component 4 . The heating coil 12 is wound around the outer wall of the tank body 11 to improve the uniformity of the temperature inside the tank body 11 .

[0073] Furthermore, the driving mechanism 2 includes a mounting frame 21, an electric telescopic rod 24 is installed on the inner wall of the mounting frame 21, a slider 22 is slidably connected to the top of the mounting frame 21, a tooth groove 23 is provided on the front end surface of the slider 22, the tooth groove 23 is engaged with the spline 311, and the extended end of the electric telescopic rod 24 is fixedly connected to the side wall of the slider 22.

[0074] Specifically, the mounting frame 21 includes two supporting columns, a cross bar is fixedly connected between the two supporting columns, the slider 22 is sleeved on the outer wall of the cross bar and is slidably connected to the cross bar, the working end of the electric telescopic rod 24 is fixedly connected to the side wall of the supporting column, the electric telescopic rod 24 can push the slider 22 to move back and forth horizontally, the tooth groove 23 is opened on the side of the slider 22 close to the drive shaft 31, and when the drive shaft 31 slides to the first position, the tooth groove 23 engages with the drive shaft 31.

[0075] Furthermore, the drive shaft 31 includes a drive sleeve 314 and a nut 318. The outer wall of the drive sleeve 314 is fixedly connected to a gear sleeve 313, which meshes with the drive gear 25. The drive sleeve 314 is rotatably connected to a drive rod 312. The top of the drive rod 312 extends out of the drive sleeve 314 and is spline-connected to the spline 311. A thread 315 is provided on the outer wall of the drive rod 312. The nut 318 is installed on the outer wall of the drive rod 312 and is threadedly connected to the thread 315.

[0076] Specifically, when the spline 311 is in the first position, the electric telescopic rod 24 engages with the spline 311 through the tooth groove 23 to control the rotation of the driving rod 312. At the same time, the motor 26 engages the gear sleeve 313 through the driving gear 25, so that the driving sleeve 314 rotates, and the nut 318 rotates at the same speed as the driving sleeve 314. When there is a speed difference between the driving rod 312 and the nut 318, the nut 318 cooperates with the thread 315, so that the nut 318 moves up and down on the outer wall of the driving rod 312. When the spline 311 moves to the second position, the outer wall of the spline 311 engages with the inner wall of the driving sleeve 314, the driving rod 312 rotates at the same speed as the driving sleeve 314, the position of the nut 318 remains unchanged, and the stirring assembly 34 is at the same horizontal height and rotates with the driving sleeve 314.

[0077] In other embodiments, a telescopic rod may be provided in the inner cavity of the driving sleeve 314, and the nut 318 may be fixedly connected to the extended end of the telescopic rod, so that the movement of the nut 318 is controlled by the telescopic rod.

[0078] Furthermore, the inner wall of the receiving groove 323 and the outer wall of the first fixing plate 325 are both provided with a first anti-slip groove 324 , and the depth of the receiving groove 323 is greater than the thickness of the first fixing plate 325 .

[0079] Specifically, the first fixing plate 325 is slidably connected in the receiving groove 323, and the contact surfaces of the two are both provided with a first anti-slip groove 324, which can increase the friction between the first fixing plate 325 and the receiving groove 323, and prevent the first fixing plate 325 from falling off from the receiving groove 323, and facilitate the disassembly and replacement of the defoaming component 33. Since the depth of the receiving groove 323 is greater than the thickness of the first fixing plate 325, when the upper end surface of the filter hole plate 343 contacts the lower end surface of the defoaming hole plate 322, the defoaming net 332 is stored in the receiving groove 323, avoiding the existence of the defoaming net 332 so that the filter hole plate 343 and the defoaming hole plate 322 cannot be contacted and squeezed, thereby improving the defoaming ability.

[0080] It should also be noted that the width of the sliding hole 331 is the same as that of the receiving groove 323 , and the first anti-slip groove 324 may be replaced by an anti-slip protrusion to increase the friction between the first fixing plate 325 and the receiving groove 323 .

[0081] Furthermore, a relief hole 341 is formed on the lower end surface of the filter plate 343 , and a plurality of groups of stirring plates 342 are fixedly connected to one end of the relief hole 341 with a connecting rod 344 . The end of the connecting rod 344 facing away from the stirring plate 342 extends into the interior of the drive sleeve 314 and is fixedly connected to the nut 318 .

[0082] Specifically, the stirring assembly 34 is fixedly connected to the outer wall of the nut 318 through the connecting rod 344. The height of the stirring assembly 34 can be adjusted by controlling the nut 318, and the stirring assembly 34 can also be moved up and down by the nut 318 so that the stirring assembly 34 moves with the nut 318.

[0083] Furthermore, a plurality of groups of slide grooves 316 are spaced apart on the outer wall of the driving sleeve 314 , and a slide rod 317 is fixedly connected in the slide groove 316 . A plurality of groups of mounting grooves 319 are spaced apart on the outer wall of the driving sleeve 314 , and the connecting rod 344 is slidably connected in the mounting groove 319 .

[0084] Specifically, when the nut 318 moves up and down, the connecting rod 344 moves in the installation groove 319. When the driving sleeve 314 rotates, due to the limiting effect of the installation groove 319, the connecting rod 344 rotates with the driving sleeve 314, thereby driving the stirring plate 342 to rotate and stir the mixed liquid.

[0085] It should also be added that when the connecting rod 344 is located at the top of the mounting groove 319, the upper end surface of the filter plate 343 contacts the lower end surface of the defoaming plate 322, and when the connecting rod 344 is located at the bottom of the mounting groove 319, the lower end surface of the stirring plate 342 contacts the bottom of the inner cavity of the tank body 11.

[0086] Furthermore, the inner wall of the fixing groove 345 and the outer wall of the second fixing plate 347 are both provided with a second anti-slip groove 346 , and the size of the second fixing plate 347 is adapted to the fixing groove 345 .

[0087] Specifically, when the mounting plate 333 is installed in the fixing groove 345 , the top of the second fixing plate 347 is flush with the edge of the fixing groove 345 .

[0088] Furthermore, two groups of mounting plates 333 are respectively fixedly connected to the upper and lower ends of the defoaming net 332 . A plurality of groups of sliding holes 331 are spaced apart on one side of the defoaming net 332 close to the driving sleeve 314 . The plurality of groups of sliding holes 331 are slidably connected to the outer wall of the sliding rod 317 .

[0089] Specifically, when the filter hole plate 343 moves upward, the defoaming net 332 gradually retracts upward. At the same time, the sliding rod 317 limits the sliding hole 331, so that the defoaming net 332 retracts along the axial direction of the sliding rod 317. When the filter hole plate 343 moves to the top, the defoaming net 332 retracts into the accommodating groove 323.

[0090] Embodiment 2:

[0091] The present invention provides a UV glue for LED packaging, which is prepared by the preparation method of any one of claims 1 to 9.

[0092] Specifically, the raw materials of UV glue used for LED packaging are as follows:

[0093] Formula a: 75%-85% polyethylene glycol dimethacrylate, 15%-25% 1-hydroxycyclohexyl phenyl ketone, 1% isooctyl acrylate, 1%-3% diluent, 1%-3% dispersant, mixing preparation temperature is 60-65°C, curing wavelength is 395nm, output power is 1500mw / cm 2 , the curing time is 10s.

[0094] Formula B: 100 parts of aliphatic epoxy resin, 10-25 parts of diisocyanate, 5 parts of coupling agent, 10 parts of photoinitiator, 5 parts of thixotropic agent, 5 parts of stabilizing agent particles, 10 parts of active diluent, mixing preparation temperature is 81-85℃, curing wavelength is 380nm, output power is 500mw / cm 2 , curing time is 100s.

[0095] Formula c: 50-70 parts of polyurethane prepolymer, 25-35 parts of acrylic monomer, 3-6 parts of acrylic crosslinker, 1-2.5 parts of photoinitiator, 0.5-1 part of chain transfer agent, 5-10 parts of inorganic filler, 4-6 parts of antioxidant, mixing preparation temperature is 81-85℃, curing wavelength is 365nm, and curing time is 4min.

[0096] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for preparing UV glue for LED packaging, characterized in that: The steps include:

1. Equipment preparation stage: S1, assembling the stirring mechanism (3), placing the mounting plate (333) at the lower end of the defoaming net (332) in the fixing groove (345), placing the second fixing plate (347) on the upper end surface of the mounting plate (333) and pushing it into the fixing groove (345), fixing the mounting plate (333) in the fixing groove (345), placing the mounting plate (333) at the upper end of the defoaming net (332) in the receiving groove (323), and fixing the mounting plate (333) in the receiving groove (323) using the first fixing plate (325), and similarly installing the defoaming component (33) between the defoaming plate (32) and the stirring component (34); The stirring mechanism (3) comprises a driving shaft (31), the defoaming plate (32) is fixedly connected to the outer wall of the driving shaft (31), the stirring assembly (34) is slidably connected to the outer wall of the driving shaft (31), and a plurality of groups of the defoaming assemblies (33) are installed at intervals at positions adjacent to the defoaming plate (32) and the stirring assembly (34). The lower end surface of the defoaming orifice plate (322) is provided with a mounting hole (321); a plurality of groups of the containing grooves (323) are spaced apart on the lower end surface of the defoaming orifice plate (322); the first fixing plate (325) is slidably connected to the containing grooves (323); the stirring assembly (34) comprises a filtering orifice plate (343); a plurality of groups of the fixing grooves (345) are spaced apart on the upper end surface of the filtering orifice plate (343); the second fixing plate (347) is slidably connected to the fixing grooves (345); and the fixing grooves (345) correspond to the containing grooves (323) in position; 2. Raw materials preparation stage: S2. Accurately weigh the raw materials of the required proportion and feed the raw materials into the inner cavity of the mixing tank (1) through the feed inlet; S3, setting the mixing temperature in the kettle through the control component (4), and turning on the heating to raise the temperature of the raw materials to the set temperature; 3. UV glue mixing preparation stage: S4, at the initial stage of preparation, the spline (311) is moved to the first position to mesh with the tooth groove (23), the electric telescopic rod (24) is operated, the control slider (22) is moved so that the tooth groove (23) meshes with the spline (311), the spline (311) drives the driving rod (312) to rotate, the stirring assembly (34) is moved to a suitable height through the nut (318), the electric telescopic rod (24) stops working, the spline (311) is pushed into the driving sleeve (314), at which time the spline (311) is located at the second position, the driving rod (312) and the driving sleeve (314) remain relatively still, the motor (26) is started, the driving gear (25) meshes with the gear sleeve (313) to rotate the driving sleeve (314), the driving sleeve (314) drives the stirring assembly (34) to rotate, and the raw materials are stirred; Three groups of stirring plates (342) are fixedly connected to the lower end surface of the filter hole plate (343) at intervals, and when the stirring assembly (34) rotates, the stirring plates (342) stir and mix the raw materials; S5. In the later stage of preparation, the spline (311) is moved to the first position, the electric telescopic rod (24) works to push the slider (22) to move back and forth, the tooth groove (23) is meshed with the spline (311), so that the spline (311) drives the driving rod (312) to rotate back and forth. Due to the speed difference between the driving rod (312) and the driving sleeve (314), when the driving rod (312) rotates in the opposite direction or the speed is less than that of the driving sleeve (314), the nut (318) moves upward, and when the driving rod (312) rotates in the opposite direction or the speed is less than that of the driving sleeve (314), the nut (318) moves upward. ) is in the same direction as the driving sleeve (314) and has a rotation speed greater than that of the driving sleeve (314), the nut (318) moves downward, and the nut (318) drives the stirring component (34) to move back and forth in the vertical direction while stirring the mixture. During the reciprocating movement of the stirring component (34), the upper end surface of the stirring component (34) contacts the lower end surface of the defoaming plate (32) to squeeze out the bubbles, thereby defoaming the mixed solution. At the same time, the defoaming component (33) rotates along with the stirring component (34) to break the bubbles in the solution; The driving shaft (31) comprises a driving sleeve (314) and a nut (318); the outer wall of the driving sleeve (314) is fixedly connected to a gear sleeve (313); the gear sleeve (313) is meshed with the driving gear (25); a driving rod (312) is rotatably connected inside the driving sleeve (314); the top of the driving rod (312) extends out of the driving sleeve (314) and is spline-connected to the spline (311); a thread (315) is formed on the outer wall of the driving rod (312); the nut (318) is mounted on the outer wall of the driving rod (312) and is threadably connected to the thread (315); The lower end surface of the filter plate (343) is provided with an avoidance hole (341); a plurality of groups of stirring plates (342) are fixedly connected to one end thereof close to the avoidance hole (341) with a connecting rod (344); and one end of the connecting rod (344) facing away from the stirring plate (342) extends into the interior of the driving sleeve (314) and is fixedly connected to the nut (318); The outer wall of the driving sleeve (314) is provided with a plurality of groups of slide grooves (316) at intervals, and a slide rod (317) is fixedly connected in the slide groove (316); the outer wall of the driving sleeve (314) is provided with a plurality of groups of installation grooves (319) at intervals, and the connecting rod (344) is slidably connected in the installation groove (319); S6, after the mixing is completed, the motor (26) is turned off, the electric telescopic rod (24) is controlled to work, the driving rod (312) is rotated, and the upper end surface of the stirring component (34) moves to a position where it is in contact with the lower end surface of the defoaming plate (32). At this time, the defoaming component (33) is stored in the receiving groove (323), and the filter plate (343) moves upward to squeeze out the liquid attached to the defoaming component (33) and filter the mixed liquid. The filtered liquid flows out from the discharge port at the bottom of the mixing tank (1); S7, controlling the electric telescopic rod (24) to reciprocate and retract, and the driving rod (312) to reciprocate, so that the stirring assembly (34) moves back and forth between the bottom of the inner cavity of the tank body (11) and the lower end surface of the defoaming plate (32), scraping off the attachments on the inner wall of the tank body (11), then moving the stirring assembly (34) to the lower end surface to contact the bottom of the tank body (11), moving the spline (311) to the second position, and the motor (26) controls the stirring assembly (34) to rotate, and the stirring plate (342) scrapes off the attachments on the bottom of the tank body (11) and pushes them to the discharge port, thereby completing the cleaning of the equipment; 4. UV glue curing stage: S8, placing the mixed UV glue under a UV lamp, and selecting different light intensities and light exposure times according to the required curing strength to cure the UV glue; 5. UV glue packaging stage: S9. The produced glue is packaged with specific packaging materials and packed into boxes to obtain the finished UV glue product.

2. The method for preparing UV glue for LED packaging according to claim 1, characterized in that: The mixing tank (1) comprises a tank body (11), a side wall of the tank body (11) is provided with an interlayer, a heating coil (12) is installed in the interlayer, and the heating coil (12) is electrically connected to the control component (4).

3. The method for preparing UV glue for LED packaging according to claim 1, characterized in that: The driving mechanism (2) comprises a mounting frame (21), an electric telescopic rod (24) being mounted on an inner wall of the mounting frame (21), a slider (22) being slidably connected to the top of the mounting frame (21), a tooth groove (23) being formed on a front end surface of the slider (22), the tooth groove (23) being meshed with the spline (311), and an extended end of the electric telescopic rod (24) being fixedly connected to a side wall of the slider (22).

4. The method for preparing UV glue for LED packaging according to claim 1, characterized in that: The inner wall of the accommodating groove (323) and the outer wall of the first fixing plate (325) are both provided with a first anti-slip groove (324), and the depth of the accommodating groove (323) is greater than the thickness of the first fixing plate (325).

5. The method for preparing UV glue for LED packaging according to claim 1, characterized in that: The inner wall of the fixing groove (345) and the outer wall of the second fixing plate (347) are both provided with a second anti-slip groove (346), and the size of the second fixing plate (347) is adapted to the fixing groove (345).

6. The method for preparing UV glue for LED packaging according to claim 1, characterized in that: Two groups of mounting plates (333) are respectively fixedly connected to the upper and lower ends of the defoaming net (332); a plurality of groups of sliding holes (331) are spaced apart on one side of the defoaming net (332) close to the driving sleeve (314); and the plurality of groups of sliding holes (331) are slidably connected to the outer wall of the sliding rod (317).

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