LED fluorescent powder coating device

Abstract

The invention relates to the field of coating, in particular to an LED fluorescent powder coating device which comprises a coating base, a driving push rod is detachably mounted at the top of the coating base, an extrusion mechanism is fixedly connected to the bottom of the driving push rod, a movable mechanism is arranged in the coating base, and the movable mechanism is fixedly connected to the bottom of the driving push rod. A trigger mechanism is arranged between the movable mechanism and the extrusion mechanism and comprises a mounting cavity formed in the coating base, two stop grooves are formed in the bottom of the mounting cavity, the mounting cavity is fixedly connected with a sliding plate through a first elastic rope, and a pressure relief hole corresponding to the extrusion mechanism is formed in the center of the sliding plate; according to the device, the top cavity and the bottom cavity are arranged so that a mixture of fluorescent powder and glue can be better mixed for the second time, precipitation of the mixture of the fluorescent powder and the glue before coating is avoided, the spraying quality is effectively improved, residues at the bottom of the coating nozzle can be effectively scraped away through the scraping frame, and the coating effect is prevented from being affected.

Description

Technical Field

[0001] The invention relates to the coating field, in particular to an LED fluorescent powder coating device. Background Art

[0002] Phosphor, also known as luminous powder, is a special material that can glow in the dark after absorbing light. It is mainly divided into two categories: photo-storage luminous powder and radioactive luminous powder. After absorbing natural light, fluorescent light, ultraviolet light and other light sources, photo-storage luminous powder can store light energy and slowly release it in the form of fluorescence after the light irradiation stops. Phosphor is widely used. It not only provides light source at night or in dark environments, but also plays an important role in many fields. In the field of display technology, phosphor is an important component of cold cathode fluorescent lamp (CCFL) and light emitting diode (LED) backlight display screens in liquid crystal displays (LCDs).

[0003] During the manufacturing process of LED, phosphor needs to be mixed with glue, and the mixture needs to be coated on the chip to better protect the chip.

[0004] In the process of coating the chip by the existing LED coating device, the material is not transported without gaps, and the material needs to be loaded and unloaded. During this process, the glue mixture accumulates on the top of the nozzle, causing the material on the top of the nozzle to stand still for a short time. During this process, the heavier part of the mixture will precipitate briefly, resulting in a decrease in the quality of the coating liquid. After one spraying, there will be a certain amount of residual liquid at the bottom of the nozzle, which needs to be cleaned in time. Therefore, we designed an LED phosphor coating device. Summary of the invention

[0005] In view of the problem in the above or prior art that the coating liquid of the LED phosphor coating device is left to stand for a period of time before coating, which may lead to a decrease in quality during spraying, the present invention is proposed.

[0006] Therefore, an object of the present invention is to provide an LED phosphor coating device.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an LED phosphor coating device, comprising a coating base, a driving push rod is detachably mounted on the top of the coating base, an extrusion mechanism is fixedly connected to the bottom of the driving push rod, a movable mechanism is arranged in the coating base, and a trigger mechanism is arranged between the movable mechanism and the extrusion mechanism; The trigger mechanism includes an installation cavity opened inside the coating base, two stop grooves are arranged at the bottom of the installation cavity, the installation cavity is fixedly connected to a slide plate by a first elastic rope, a pressure relief hole corresponding to the extrusion mechanism is arranged at the center of the slide plate, a built-in groove and a vertical groove are respectively arranged inside the slide plate, an unlocking block is fixedly connected to the built-in groove by a second elastic rope, a clamping frame is arranged on the vertical groove corresponding to the unlocking block, a reset spring sheet is arranged between the top of the clamping frame and the installation cavity, and the clamping frame is respectively provided with an oblique groove and a separation groove corresponding to the unlocking block and the stop groove.

[0008] As a preferred solution of the LED fluorescent powder coating device of the present invention, wherein: the installation cavity is slidably connected to the slide board, the slide board is provided with a rope groove corresponding to the first elastic rope, the cross-section of the pressure relief hole is circular, the cross-section of the built-in groove is rectangular, the built-in groove is located at the end of the slide board away from the rope groove, the number of the vertical grooves is two, and they are slidably connected to the clamping frame.

[0009] As a preferred solution of the LED phosphor coating device of the present invention, wherein: the reset spring is arc-shaped, the bottom of the reset spring is fixedly connected to the clamping frame, the top of the arc end of the reset spring fits with the top of the inner wall of the installation cavity, and the unlocking block is provided with a lifting groove corresponding to the inclined groove.

[0010] As a preferred solution of the LED phosphor coating device of the present invention, the coating base includes a shell, a top cavity and a bottom cavity are respectively provided inside the shell, the top cavity and the bottom cavity are connected through a gap, and the top cavity is adapted to the driving push rod.

[0011] As a preferred solution of the LED fluorescent powder coating device of the present invention, the cross-section of the bottom cavity is "V"-shaped, a coating nozzle is provided at the bottom of the bottom cavity, a feeding cavity is provided at the bottom of the driving push rod, and a feeding switch is provided at the top of the feeding cavity.

[0012] As a preferred solution of the LED fluorescent powder coating device of the present invention, wherein: the slide plate is located between the pores, and the pressure relief holes are matched with the pores.

[0013] As a preferred solution of the LED phosphor coating device of the present invention, the extrusion mechanism includes a piston fixedly mounted on a driving push rod, a round box is provided at the bottom of the piston, a counterweight frame is slidably connected inside the round box, an extrusion soft cover is fixedly connected to the bottom of the counterweight frame, and a sealing ring is fixedly connected to the bottom of the top cavity corresponding to the extrusion soft cover.

[0014] As a preferred solution of the LED phosphor coating device of the present invention, the extrusion mechanism further comprises a guide hopper groove arranged at the bottom of the top cavity, the top of the guide hopper groove is provided with a splash-proof convex strip, the top cavity is provided with a splash-proof barrier ring cover at the top of the convex strip, and a slit is provided between the bottom of the barrier ring cover and the guide hopper groove.

[0015] As a preferred solution of the LED fluorescent powder coating device of the present invention, the movable mechanism includes an oblique circular cavity arranged in the top cavity, the oblique circular cavity is connected to the straight cavity through a connecting cavity, the other end of the straight cavity is provided with a built-in cavity, and the upper and lower ends of the built-in cavity are respectively provided with a transmission groove and a limit groove.

[0016] As a preferred solution of the LED fluorescent powder coating device of the present invention, the movable mechanism also includes a positioning cylinder arranged inside the built-in cavity, a vent hole is provided on the positioning cylinder, a translation cylinder is slidably connected to the outside of the positioning cylinder, a transmission plate and a scraper are fixedly connected at the upper and lower ends of the translation cylinder respectively, the transmission plate is connected to the unlocking block, and the scraper is adapted to the bottom of the coating nozzle.

[0017] The beneficial effects of the LED fluorescent powder coating device of the present invention are as follows: the arrangement of the top cavity and the bottom cavity in the device facilitates better secondary mixing of the fluorescent powder and the glue mixture. During coating, the fluorescent powder and the glue mixture is separated into two groups. First, the material is introduced into the top cavity. During coating, the material in the bottom cavity is squeezed out, and then part of the fluorescent powder and the glue mixture in the top cavity is squeezed into the bottom cavity, so that the mixture is sprayed in the bottom cavity. During the loading and unloading process of the LED chip, the mixture flows along the bottom cavity to the top of the coating nozzle, avoiding the situation where the mixture is left to stand and the fluorescent powder is precipitated. When a certain amount of liquid accumulates at the top of the coating nozzle, spraying is performed here to avoid precipitation of the fluorescent powder and the glue mixture before coating, thereby effectively improving the spraying quality. The arrangement of the scraper can effectively scrape off the residue at the bottom of the coating nozzle to avoid affecting the coating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 This is an overall schematic diagram of the LED phosphor coating device.

[0020] Figure 2 A side view of an LED phosphor coating device.

[0021] Figure 3for Figure 2 Enlarged view of point A in the middle.

[0022] Figure 4 It is a cross-sectional view of an LED phosphor coating device.

[0023] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0024] Figure 6 A partial structural side view of an LED phosphor coating device.

[0025] Figure 7 This is a schematic diagram of the active mechanism and trigger mechanism of the LED phosphor coating device.

[0026] Figure 8 Schematic diagram of the trigger mechanism of the LED phosphor coating device.

[0027] Fig. 9 A cross-sectional view of a trigger mechanism of an LED phosphor coating device.

[0028] Fig.10 This is a schematic diagram of the interior of the skateboard of the LED phosphor coating device.

[0029] In the figure: 100, coating base; 101, shell; 102, top cavity; 103, bottom cavity; 104, pore; 105, coating nozzle; 106, feeding cavity; 107, feeding switch; 200, driving push rod; 300, extrusion mechanism; 301, piston; 302, round box; 303, counterweight frame; 304, extrusion soft cover; 305, sealing ring; 306, guide bucket groove; 307, convex strip; 308, barrier ring cover; 400, movable mechanism; 401, oblique round cavity; 402, connecting cavity; 403, straight cavity; 40 4. Built-in cavity; 405. Transmission groove; 406. Limiting groove; 407. Positioning cylinder; 408. Translation cylinder; 409. Transmission plate; 410. Scraper; 500. Trigger mechanism; 501. Installation cavity; 502. Stop groove; 503. First elastic rope; 504. Slide plate; 505. Pressure relief hole; 506. Built-in groove; 507. Vertical groove; 508. Second elastic rope; 509. Unlocking block; 510. Snap-in frame; 511. Reset spring; 512. Oblique groove; 513. Separation groove; 514. Rope groove; 515. Lifting groove. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] Example 1, reference Figures 1 to 10, which is the first embodiment of the present invention, and provides an LED phosphor coating device, which can achieve the effect of an LED phosphor coating device, and includes a coating base 100, a driving push rod 200 is detachably mounted on the top of the coating base 100, and a squeezing mechanism 300 is fixedly connected to the bottom of the driving push rod 200, and a movable mechanism 400 is arranged in the coating base 100, and a trigger mechanism 500 is arranged between the movable mechanism 400 and the squeezing mechanism 300; Furthermore, the coating base 100 and the driving push rod 200 can be connected by bolts. The driving push rod 200 can be an electric telescopic rod, which can effectively squeeze the material inside it, so as to achieve the effect of discharging the material. After discharging the material, the LED can be sprayed. The setting of the extrusion mechanism 300 can effectively squeeze the material inside the coating base 100, so as to better perform the coating work. The setting of the trigger mechanism 500 can utilize the movement of the driving push rod 200 to spray and scrape the coating nozzle 105 at the same time during operation, so as to avoid the rubber material affecting the operation of the coating nozzle 105.

[0032] Reference Figure 6 to Figure 10 The trigger mechanism 500 includes an installation cavity 501 opened inside the coating base 100, two stop grooves 502 are provided at the bottom of the installation cavity 501, and the installation cavity 501 is fixedly connected to a slide plate 504 through a first elastic rope 503. A pressure relief hole 505 corresponding to the extrusion mechanism 300 is provided at the center of the slide plate 504.

[0033] Among them, the setting of the installation cavity 501 can effectively limit the components inside it, and ensure the stable operation of the components inside it during operation. The setting of the stop groove 502 can effectively limit the clamping frame 510. When the clamping frame 510 is limited, the slide plate 504 can be limited under the limiting action of the vertical groove 507, so that the setting of the stop groove 502 can limit the slide plate 504. The setting of the first elastic rope 503 can effectively limit the slide plate 504. After the slide plate 504 moves, the first elastic rope 503 will accumulate elastic potential energy, thereby driving the slide plate 504 to reset. During operation, the setting of the first elastic rope 503 can ensure the position of the slide plate 504. The setting of the pressure relief hole 505 can effectively connect the top cavity 102 with the bottom cavity 103. When the pressure relief hole 505 is far away from the pore 104, the slide plate 504 separates the top cavity 102 from the bottom cavity 103.

[0034] Reference Figure 6 to Figure 10A built-in groove 506 and a vertical groove 507 are respectively provided inside the skateboard 504, and an unlocking block 509 is fixedly connected to the built-in groove 506 through a second elastic rope 508. A clamping frame 510 is provided in the vertical groove 507 corresponding to the unlocking block 509, and a reset spring piece 511 is provided between the top of the clamping frame 510 and the installation cavity 501. The clamping frame 510 is provided with an oblique groove 512 and a separation groove 513 corresponding to the unlocking block 509 and the stop groove 502 respectively.

[0035] Furthermore, the cross section of the built-in groove 506 is rectangular, and the setting of the built-in groove 506 can effectively limit the unlocking block 509, ensuring that the unlocking block 509 always moves in the groove direction of the built-in groove 506 during the movement. The setting of the vertical groove 507 can effectively limit the clamping frame 510. The clamping frame 510 is limited by the vertical groove 507 during the movement, so that the clamping frame 510 can only move vertically relative to the vertical groove 507, which is convenient for bringing the clamping frame 510 out of the stop groove 502. The arrangement can reset the clamping frame 510 after being lifted, making it easier for the clamping frame 510 to enter the stop groove 502. The inclined groove 512 is located at the top of the inner side of the clamping frame 510. When the lifting groove 515 moves toward the inclined groove 512, the lifting groove 515 and the inclined groove 512 are abutted against each other, and the inclined groove 512 can be lifted upward, thereby driving the clamping frame 510 to rise. The separation groove 513 is located at the bottom of the clamping frame 510 away from one end of the lifting groove 515. The arrangement of the separation groove 513 can better enable the clamping frame 510 to detach from the stop groove 502.

[0036] Reference Figure 6 to Figure 10 The installation cavity 501 is slidably connected to the slide plate 504. The slide plate 504 is provided with a rope groove 514 corresponding to the first elastic rope 503. The cross section of the pressure relief hole 505 is circular. The cross section of the built-in groove 506 is rectangular. The built-in groove 506 is located at the end of the slide plate 504 away from the rope groove 514. There are two vertical grooves 507, which are slidably connected to the clamping frame 510. The reset spring 511 is arc-shaped. The bottom of the reset spring 511 is fixedly connected to the clamping frame 510. The top of the arc end of the reset spring 511 fits with the top of the inner wall of the installation cavity 501. The unlocking block 509 is provided with a lifting groove 515 corresponding to the inclined groove 512.

[0037] Furthermore, the cross-section of the rope groove 514 is elliptical, and the function of the rope groove 514 is to accommodate the first elastic rope 503. The first elastic rope 503 is woven from elastic fibers, and the first elastic rope 503 is fixedly connected to the rope groove 514. The setting of the pressure relief hole 505 facilitates better connection between the top cavity 102 and the bottom cavity 103. The clamping frame 510 is made of metal. The function of the clamping frame 510 is to limit the slide plate 504, and a certain rigidity is required to better limit the slide plate 504. The reset spring 511 is arc-shaped, and the contact area between its top and the installation cavity 501 is small. During the movement of the reset spring 511, the friction can be better reduced, which facilitates the movement of the reset spring 511.

[0038] Reference Figure 1 to Figure 4 The coating base 100 includes a shell 101, and a top cavity 102 and a bottom cavity 103 are respectively provided inside the shell 101. The top cavity 102 and the bottom cavity 103 are connected through a pore 104, and the top cavity 102 is adapted to the driving push rod 200. The cross section of the bottom cavity 103 is "V"-shaped, and a coating nozzle 105 is provided at the bottom of the bottom cavity 103. The top cavity 102 is located at the bottom of the driving push rod 200 and is provided with a feed cavity 106. The top cavity 102 is located at the top of the feed cavity 106 and is provided with a feed switch 107. The slide plate 504 is located between the pores 104, and the pressure relief hole 505 is adapted to the pores 104.

[0039] Specifically, the shell 101 can be effectively bolted to the driving push rod 200. The arrangement of the top cavity 102 and the bottom cavity 103 facilitates better secondary mixing of the mixture of phosphor and glue. During coating, the mixture of phosphor and glue is separated into two groups. During coating, the material is first introduced into the top cavity 102, and the material in the bottom cavity 103 is squeezed out during coating, and then part of the mixture of phosphor and glue in the top cavity 102 is squeezed into the bottom cavity 103, so that the mixture is sprayed in the bottom cavity 103. During the loading and unloading process of the LED chip, the mixture flows along the bottom cavity 103 to the top of the coating nozzle 105 to avoid the situation where the mixture is left standing and the phosphor is precipitated. When a certain amount of the mixture accumulates at the top of the coating nozzle 105, spraying can avoid the precipitation of the mixture of phosphor and glue before coating, thereby effectively improving the spraying quality.

[0040] Example 2, reference Figure 2 to Figure 10, which is the second embodiment of the present invention. The difference from the previous embodiment is the extrusion mechanism 300. This embodiment provides an extrusion mechanism 300 for an LED phosphor coating device, which solves the feeding problem of the LED phosphor coating device. The extrusion mechanism 300 includes a piston 301 fixedly mounted on a driving push rod 200, a round box 302 is provided at the bottom of the piston 301, a counterweight frame 303 is slidably connected inside the round box 302, an extrusion soft cover 304 is fixedly connected to the bottom of the counterweight frame 303, and a sealing ring 305 is fixedly connected to the bottom of the top cavity 102 corresponding to the extrusion soft cover 304.

[0041] Furthermore, the bottom of the driving end of the driving push rod 200 is fixedly connected to the top center of the piston 301, the piston 301 is slidably connected to the inner wall of the top cavity 102, the piston 301 is made of rubber, the round box 302 is fixedly connected, the inside of the round box 302 is slidably connected to the counterweight frame 303, the cross-section of the counterweight frame 303 is an inverted "T" shape, the extrusion soft cover 304 is made of rubber, the setting of the extrusion soft cover 304 is convenient for better pressurizing its bottom space, and convenient for better coating and feeding work, the setting of the sealing ring 305 is convenient for better improving the sealing performance of the extrusion soft cover 304, and can better pressurize the bottom space of the extrusion soft cover 304.

[0042] Reference Figure 2 to Figure 6 The extrusion mechanism 300 also includes a guide hopper groove 306 arranged at the bottom of the top cavity 102, and a splash-proof convex strip 307 is provided on the top of the guide hopper groove 306. The top cavity 102 is provided with a splash-proof barrier ring cover 308 at the top of the convex strip 307, and a slit is provided between the bottom of the barrier ring cover 308 and the guide hopper groove 306.

[0043] Among them, the setting of the guide hopper groove 306 is convenient for better limiting the material, so that the material can flow better to the top of the pore 104 and enter the bottom cavity 103 better. The setting of the convex strip 307 prevents the liquid from splashing during the upward process of the squeezed soft cover 304 and entering the inclined circular cavity 401, which can better ensure the stable operation of the movable mechanism 400 and ensure that the liquid always flows to the top of the pore 104. The setting of the slit can ensure that there is always communication between the inclined circular cavity 401 and the top cavity 102, and prevent the liquid in the top cavity 102 from entering the inclined circular cavity 401.

[0044] The rest of the structure is the same as that of Example 1.

[0045] In summary, the setting of the extrusion soft cover 304 facilitates better pressurization of its bottom space, which facilitates better coating and feeding work. The setting of the sealing ring 305 facilitates better improvement of the sealing performance of the extrusion soft cover 304. The setting of the extrusion soft cover 304 facilitates better pressurization of its bottom space, which facilitates better coating and feeding work.

[0046] Example 3, reference Figure 2 to Figure 10 , which is the third embodiment of the present invention, and is different from the previous embodiment in that the movable mechanism 400. This embodiment provides a movable mechanism 400 of an LED phosphor coating device, which solves the problem of transmission in the LED phosphor coating device and the removal of residual liquid at the bottom of the coating nozzle 105, and includes a movable mechanism 400, which includes an oblique circular cavity 401 arranged in the top cavity 102, the oblique circular cavity 401 is connected to a straight cavity 403 through a connecting cavity 402, and the other end of the straight cavity 403 is provided with a built-in cavity 404, and the upper and lower ends of the built-in cavity 404 are respectively provided with a transmission groove 405 and a limit groove 406.

[0047] Among them, the setting of the oblique circular cavity 401 prevents the liquid from moving toward the connecting cavity 402 after passing through the slit, and the oblique upward setting can better prevent the liquid from entering the connecting cavity 402. The setting of the connecting cavity 402 can effectively transmit the pressure at the bottom of the top cavity 102 to the straight cavity 403. The setting of the built-in cavity 404 can effectively limit the translation cylinder 408 inside it. The setting of the transmission groove 405 can better limit the transmission plate 409. The setting of the limiting groove 406 is convenient for better limiting the scraper 410. After limiting the scraper 410, the residual liquid at the bottom of the coating nozzle 105 can be effectively cleared.

[0048] Reference Figures 5 to 8 The movable mechanism 400 also includes a positioning cylinder 407 arranged inside the built-in cavity 404, and a vent hole is provided on the positioning cylinder 407. The positioning cylinder 407 is slidably connected to the outside of the translation cylinder 408. The upper and lower ends of the translation cylinder 408 are respectively fixedly connected to a transmission plate 409 and a scraper 410. The transmission plate 409 is connected to the unlocking block 509, and the scraper 410 is adapted to the bottom of the coating nozzle 105.

[0049] Specifically, the setting of the positioning cylinder 407 facilitates better reception of air from the straight cavity 403, the setting of the vent hole facilitates the connection between the positioning cylinder 407 and the translation cylinder 408, the setting of the translation cylinder 408 can simultaneously drive the transmission plate 409 and the scraper 410 to move, and the setting of the coating nozzle 105 can better coat the LED chip.

[0050] The rest of the structure is the same as that of Example 2.

[0051] During operation, the driving push rod 200 performs reciprocating motion. When the driving push rod 200 rises to the limit position, the piston 301 contacts the feed switch 107, so that the material inside the feed chamber 106 enters the top chamber 102. The driving push rod 200 drives the piston 301 to move downward. At this time, the slide plate 504 blocks the pore 104, and the piston 301 squeezes the air in the top chamber 102 during the descending process. At the same time, the counterweight frame 303 drives the extrusion soft cover 304 to fit with the sealing ring 305. At this time, the piston 301 continues to descend, so that the round box 302 squeezes the counterweight frame 303, and further makes the extrusion soft cover 304 squeeze the air inside it; When the piston 301 descends, the air at the bottom of the top chamber 102 is discharged, and the air in the top chamber 102 enters the positioning cylinder 407 through the oblique circular groove, the connecting chamber 402, and the straight chamber 403. The pressure inside the positioning cylinder 407 increases, thereby driving the translation cylinder 408 to move. During the movement of the translation cylinder 408, the transmission plate 409 is driven to move, and the movement of the transmission plate 409 drives the unlocking block 509 to move. During the movement of the unlocking block 509, the second elastic rope 508 is stretched and elastic potential energy is accumulated. When the unlocking block 509 contacts the clamping frame 510, the elastic potential energy of the second elastic rope 508 can effectively drive the first elastic rope 503 to stretch. When the unlocking block 509 moves, the lifting groove 515 is driven to move. After the lifting groove 515 moves, it contacts the inclined groove 512. After being contacted by the lifting groove 515, the inclined groove 512 drives the clamping frame 510 to rise, thereby driving the reset spring piece 511 to generate elastic potential energy, which is convenient for the subsequent reset of the clamping frame 510. When the clamping frame 510 rises, the stop groove 502 is separated from the clamping frame 510. At this time, the slide plate 504 is in an active state. Driven by the unlocking block 509, the clamping frame 510 and the slide plate 504 move together, so that the pressure relief hole 505 coincides with the pore 104. At this time, the compressed air and the mixed liquid at the bottom of the extruded soft cover 304 are introduced into the bottom cavity 103 through the pores 104 and the pressure relief holes 505, and drive the mixed liquid in the bottom cavity 103 to be sprayed onto the LED chip through the coating nozzle 105. The mixed liquid at the bottom of the extruded soft cover 304 is sprayed onto the bottom cavity 103 through the pores 104, and slowly flows to the top of the coating nozzle 105, so as to carry out the next spraying work; When the device is reset, the driving push rod 200 drives the piston 301 to reset, and the first elastic rope 503 and the second elastic rope 508 to reset, thereby driving the slide plate 504 and the unlocking block 509 to reset, and the unlocking block 509 drives the translation cylinder 408 to reset.

[0052] In summary, the positioning cylinder 407 and the translation cylinder 408 limit each other, and the translation cylinder 408 wraps the positioning cylinder 407. A sealing gasket layer is provided in the opening direction of the translation cylinder 408 corresponding to the positioning cylinder 407, so as to ensure the sealing between the translation cylinder 408 and the positioning cylinder 407. The setting of the oblique circular cavity 401 prevents the liquid from entering the connecting cavity 402 after passing through the slit, and the oblique upward setting can better prevent the liquid from entering the connecting cavity 402. The setting of the connecting cavity 402 can effectively transmit the pressure at the bottom of the top cavity 102 to the straight cavity 403.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An LED phosphor coating device, characterized in that: The coating base (100) comprises a coating base (100), a driving push rod (200) being detachably mounted on the top of the coating base (100), a squeezing mechanism (300) being fixedly connected to the bottom of the driving push rod (200), a movable mechanism (400) being arranged inside the coating base (100), and a trigger mechanism (500) being arranged between the movable mechanism (400) and the squeezing mechanism (300); The trigger mechanism (500) comprises an installation cavity (501) opened inside the coating base (100), two stop grooves (502) are provided at the bottom of the installation cavity (501), a slide plate (504) is fixedly connected to the installation cavity (501) via a first elastic rope (503), a pressure relief hole (505) corresponding to the extrusion mechanism (300) is provided at the center of the slide plate (504), and a built-in groove (506) and a vertical groove are respectively provided inside the slide plate (504). (507), an unlocking block (509) is fixedly connected to the built-in groove (506) via a second elastic rope (508), a clamping frame (510) is provided on the vertical groove (507) corresponding to the unlocking block (509), a reset spring sheet (511) is provided between the top of the clamping frame (510) and the installation cavity (501), and the clamping frame (510) is provided with an inclined groove (512) and a separation groove (513) corresponding to the unlocking block (509) and the stop groove (502), respectively.

2. The LED phosphor coating device according to claim 1, characterized in that: The installation cavity (501) is slidably connected to the slide plate (504); the slide plate (504) is provided with a rope groove (514) corresponding to the first elastic rope (503); the cross section of the pressure relief hole (505) is circular; the cross section of the built-in groove (506) is rectangular; the built-in groove (506) is located at one end of the slide plate (504) away from the rope groove (514); there are two vertical grooves (507) which are slidably connected to the clamping frame (510).

3. The LED phosphor coating device according to claim 2, characterized in that: The reset spring (511) is arc-shaped, the bottom of the reset spring (511) is fixedly connected to the clamping frame (510), the top of the arc end of the reset spring (511) is in contact with the top of the inner wall of the installation cavity (501), and the unlocking block (509) is provided with a lifting groove (515) corresponding to the inclined groove (512).

4. The LED phosphor coating device according to claim 2 or 3, characterized in that: The coating base (100) comprises a shell (101), wherein a top cavity (102) and a bottom cavity (103) are respectively provided inside the shell (101), wherein the top cavity (102) and the bottom cavity (103) are connected via a pore (104), and the top cavity (102) is adapted to the driving push rod (200).

5. The LED phosphor coating device according to claim 4, characterized in that: The bottom chamber (103) has a "V"-shaped cross section, a coating nozzle (105) is provided at the bottom of the bottom chamber (103), a feeding chamber (106) is provided at the bottom of the driving push rod (200), and a feeding switch (107) is provided at the top of the feeding chamber (106) of the top chamber (102).

6. The LED phosphor coating device according to claim 5, characterized in that: The slide plate (504) is located between the pores (104), and the pressure relief holes (505) are adapted to the pores (104).

7. The LED phosphor coating device according to claim 6, characterized in that: The extrusion mechanism (300) comprises a piston (301) fixedly mounted on a driving push rod (200); a round box (302) is provided at the bottom of the piston (301); a counterweight frame (303) is slidably connected inside the round box (302); an extrusion soft cover (304) is fixedly connected at the bottom of the counterweight frame (303); and a sealing ring (305) is fixedly connected at the bottom of the top cavity (102) corresponding to the extrusion soft cover (304).

8. The LED phosphor coating device according to claim 7, characterized in that: The extrusion mechanism (300) further comprises a flow guide groove (306) arranged at the bottom of the top cavity (102), a convex strip (307) for preventing liquid splashing is arranged at the top of the flow guide groove (306), and a blocking ring cover (308) for preventing liquid splashing is arranged at the top of the convex strip (307) in the top cavity (102), and a slit is provided between the bottom of the blocking ring cover (308) and the flow guide groove (306).

9. The LED phosphor coating device according to claim 8, characterized in that: The movable mechanism (400) comprises an oblique circular cavity (401) arranged in the top cavity (102); the oblique circular cavity (401) is connected to a straight cavity (403) via a connecting cavity (402); a built-in cavity (404) is provided at the other end of the straight cavity (403); and a transmission groove (405) and a limit groove (406) are respectively provided at the upper and lower ends of the built-in cavity (404).

10. The LED phosphor coating device according to claim 9, characterized in that: The movable mechanism (400) further comprises a positioning cylinder (407) arranged inside the built-in cavity (404), the positioning cylinder (407) being provided with a vent hole, the positioning cylinder (407) being slidably connected to the outside of a translation cylinder (408), the upper and lower ends of the translation cylinder (408) being fixedly connected to a transmission plate (409) and a scraper (410), respectively, the transmission plate (409) being connected to an unlocking block (509), and the scraper (410) being adapted to the bottom of the coating nozzle (105).

Images