Packaging auxiliary device for flexible LED lamp filament containing fluorescent powder and packaging method of packaging auxiliary device

Abstract

The invention discloses a packaging auxiliary device for a flexible LED lamp filament containing fluorescent powder and a packaging method of the packaging auxiliary device, and relates to the technical field of resistance substrate detection. The packaging auxiliary device comprises a base, a rotating table is arranged in the middle of the upper end face of the base, and an equipment mounting table fixedly welded to the base is arranged on the outer side of the rotating table; a guide groove is formed between the equipment mounting table and the rotating table, the guide groove is formed by splicing two circles, one circle is coaxial with the rotating table, the other circle is eccentric to the rotating table, and a feeding conveyor mounting groove, a dispensing equipment mounting seat, a curing box and a discharging conveyor mounting groove are annularly and sequentially arranged on the upper end face of the equipment mounting table; and six groups of positioning mechanisms which are annularly distributed at equal intervals are arranged on the upper end face of the rotating table, clamping plates are symmetrically installed on the two sides of the upper end face of each positioning mechanism, and the problem how to achieve rapid and large-batch continuous production of the flexible LED lamp filament modules on the premise that packaging equipment is convenient, fast and stable is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of resistance substrate detection, and particularly to a packaging auxiliary device for a phosphor-containing flexible LED filament and a packaging method thereof. Background Art

[0002] When packaging an LED filament, packaging materials such as organosilica gel mixed with phosphor are coated on a filament with glass fiber as a substrate and dozens of LED chips connected in series by means of dispensing. Its functions are to encapsulate the LED chips, protect the chips, improve the light extraction efficiency, improve the optical performance, etc. At the same time, 360-degree omnidirectional light emission is realized. By mixing the filament glue in a specified proportion, performing vacuum degassing treatment to remove the air bubbles in the glue, and then accurately dispensing the glue at the specified position of the LED filament through a dispensing device. After dispensing, pre-baking curing and long-baking curing are carried out to complete the packaging process.

[0003] For example, in the Chinese authorized patent "An LED filament dispenser" with the publication number CN208373444U, a heating sheet is provided on the dispensing head of the dispensing device. The power supply module can supply power to the heating sheet to make it heat up. A switch is provided between the power supply module and the heating sheet. The controller can control the opening of the switch. When the controller controls the switch to open, the heating sheet is powered on and heats up to melt the residual hardened glue on the dispensing head. Then, the controller controls the motor group to move the dispensing head to the cleaning structure to clean the excess glue, so as not to affect the subsequent dispensing process of the LED filament. It can not only realize the full automation of LED filament dispensing, but also process the residual glue on the dispensing head to avoid affecting the production process of the LED filament.

[0004] Although the above-mentioned prior art can realize the packaging of a flexible LED filament module, the degree of automation of the whole process is relatively low, and personnel are required to operate in multiple links. It is not only easy to cause damage to the packaging of the flexible LED filament module due to work mistakes, but also the packaging efficiency is poor, which is not conducive to large-scale continuous production. Although there are fully automatic dispensing and packaging devices on the market, the electrical control components are complex and numerous, which not only sharply increases the production cost, but also is more inconvenient to maintain. Therefore, it does not meet the existing requirements. For this reason, we propose a packaging auxiliary device for a phosphor-containing flexible LED filament and a packaging method thereof. Summary of the Invention

[0005] The purpose of the present invention is to provide a packaging auxiliary device for a phosphor-containing flexible LED filament and a packaging method thereof, so as to solve the problem of how to realize the rapid large-scale continuous production of a flexible LED filament module on the premise of being convenient and stable in the above-mentioned background art.

[0006] To achieve the above object, the present invention provides the following technical solution: An encapsulation auxiliary device for a phosphor-containing flexible LED filament, comprising a base. At the middle position of the upper end surface of the base, a rotating table is provided, and the rotating table is connected to the base through a bearing. An equipment mounting table welded and fixed to the base is arranged outside the rotating table. A guiding groove is provided between the equipment mounting table and the rotating table. The guiding groove is formed by splicing two circles. One of the circles is concentric with the rotating table, and the other circle is eccentric with the rotating table. The upper end surface of the equipment mounting table is sequentially provided with a feeding conveyor mounting groove, a dispensing equipment mounting seat, a curing box, and a discharging conveyor mounting groove in a ring shape. Six groups of positioning mechanisms are arranged on the upper end surface of the rotating table at equal intervals in a ring shape, and the positioning mechanisms are snap-connected to the rotating table. An active rack is slidably mounted at the outer end of the positioning mechanism. The outer end of the active rack is in an arc structure, and the arc structure fits with the guiding groove. Clamping plates are symmetrically mounted on both sides of the upper end surface of the positioning mechanism. When the active rack is at the positions of the guiding groove corresponding to the feeding conveyor mounting groove and the discharging conveyor mounting groove, the clamping plates remain open. When the active rack is at the positions of the guiding groove corresponding to the dispensing equipment mounting seat and the curing box, the clamping plates remain clamped. A guiding roller is rotatably mounted at the center position of the upper end surface of the positioning mechanism. When the positioning mechanism moves from the feeding conveyor mounting groove towards the dispensing equipment mounting seat, the guiding roller rotates clockwise. Conversely, when the positioning mechanism moves from the curing box towards the discharging conveyor mounting groove, the guiding roller rotates counterclockwise.

[0007] Preferably, a first transmission gear is mounted at the center position inside the positioning mechanism, and the first transmission gear is rotatably connected to the positioning mechanism. A driving gear is meshed on one side of the first transmission gear. The driving gear is meshed with both the first transmission gear and the active rack. A first driven gear is fixedly arranged on the shaft at the upper end of the first transmission gear. First rack plates are mounted in front of and behind the first driven gear. The first rack plates are slidably limited by the positioning mechanism and are meshed with the first driven gear. The first rack plates are fixed to the bottom of the clamping plates through connecting rods.

[0008] Preferably, a second rack plate is fixedly arranged on the side surface of the end of the active rack located inside the positioning mechanism. A second transmission gear is meshed on the rear side of the upper end of the second rack plate, and the second transmission gear is rotatably connected to the positioning mechanism. A second driven gear is meshed on the upper end of the second transmission gear. One end of the shaft of the second driven gear is rotatably connected to the positioning mechanism, and the shaft of the other end of the second driven gear is connected to the shaft of one end of the guiding roller through a belt.

[0009] Preferably, a fixing plate is fixedly welded to the rear side of the upper end surface of the positioning mechanism. Telescopic adjustment seats are fixedly arranged at one ends of the clamping plate and the fixing plate respectively. A telescopic rod is slidably limited inside the telescopic adjustment seat. The telescopic rods penetrate through the clamping plate and the fixing plate respectively. Positioning blocks are fixedly arranged at one ends of the telescopic rods. A hand wheel is rotatably installed at the outer end of the telescopic adjustment seat. A screw rod is fixedly arranged at one end of the hand wheel. The screw rod extends into the telescopic rod, and the external thread of the screw rod is adapted to the internal screw hole of the telescopic rod.

[0010] Preferably, a preheating chamber, a curing chamber and a heat dissipation chamber are sequentially arranged inside the curing box. Grooves for the positioning mechanism to pass through are opened on the partition plates between the preheating chamber, the curing chamber and the heat dissipation chamber. A heating device is installed at the upper end of the curing chamber.

[0011] Preferably, a heat recovery pipe is arranged between the preheating chamber and the heat dissipation chamber. A fan is installed on one side inside the heat recovery pipe, and an electric heating wire is installed on the other side inside the heat recovery pipe. An air inlet groove is opened on one side of the curing box where the heat dissipation chamber is located.

[0012] Preferably, a return spring is installed in the groove where the movable rack slides with the positioning mechanism. Two return springs are symmetrically arranged, and both ends of the return spring are fixed to the movable rack and the positioning mechanism respectively.

[0013] Preferably, a plurality of rollers are arranged in front of and behind the roller, and both ends of the roller are rotatably connected to the positioning mechanism.

[0014] Preferably, a reduction motor for driving the rotary table to rotate is arranged inside the base.

[0015] The encapsulation method of the encapsulation auxiliary device for the phosphor-containing flexible LED filament includes the following steps:

[0016] Step 1: In the initial state, the positioning mechanism corresponds to the installation groove position of the feeding conveyor. At this time, due to the guiding groove structure and the action of the return spring, the movable rack is fully extended, the clamping plate maintains the maximum opening state, and the LED filament module is conveyed by the feeding conveyor and enters the positioning mechanism through the roller.

[0017] Step 2: The rotary table starts to rotate, and the distance between the center of the rotary table and the guiding groove linearly decreases, squeezing the movable rack to contract towards the inside of the positioning mechanism. The second rack plate on one side of the movable rack moves synchronously, meshes with the second transmission gear, drives the second transmission gear to rotate, and the second transmission gear drives the guiding roller to rotate through the belt. The guiding roller contacts the bottom of the LED filament module. Under the action of friction, the LED filament module moves rapidly towards the inner end of the positioning mechanism during the movement towards the installation seat station of the dispensing device in the positioning mechanism until it contacts the fixed plate assembly to complete the positioning.

[0018] Step 3: During the contraction of the movable rack, the rack meshes with the driving gear, driving the first transmission gear and the first driven gear to rotate. The first driven gear meshes with the first rack plate, converting the rotational motion into a linear motion. The clamping plate is driven by the first rack plate to approach the LED filament module until it is clamped and fixed.

[0019] Step 4: After the positioning mechanism clamps the LED filament module, it passes through the area of the dispensing equipment mounting base, and dispensing operation is performed on the LED filament module at the dispensing equipment mounting base.

[0020] Step 5: Subsequently, it enters the preheating chamber of the curing oven to pre-bake the dispensed LED filament module, with the temperature controlled at 60 - 80 degrees Celsius. After coming out of the preheating chamber, it enters the curing chamber, and the temperature is raised to 130 - 160 degrees Celsius to fully cure the glue. Finally, it enters the heat dissipation chamber, the fan inside the heat recovery pipe is turned on to extract the air inside the heat dissipation chamber, the external air cools the LED filament module after passing through it, and the air heated through heat exchange enters the preheating chamber through the heat recovery pipe.

[0021] Step 6: After being removed from the curing oven, the distance between the center of the rotating table and the guiding groove linearly expands. Under the supporting action of the return spring on the movable rack, the movable rack extends outward, driving the driving gear to reverse. With the cooperation of multiple gears, the clamping plate assembly releases the LED filament module. At the same time, the extension of the movable rack drives the second transmission gear to reverse, and the reverse rotation of the guiding roller is realized through the cooperation of the gear and the belt. It moves to the position of the discharging conveyor mounting groove, and the LED filament module completes the blanking under the action of the reverse rotation of the guiding roller.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The present invention realizes the automatic clamping and relaxation of the LED filament module through the rotation of the rotating table. There is a guiding groove between the rotating table and the equipment mounting table. The guiding groove is composed of two spliced circles. One of the circles is coaxial with the rotating table and accounts for half of the arc length of the entire guiding groove. The other circle is eccentric with the rotating table. By installing a movable rack with sliding fit at the outer end of the positioning mechanism and making one end of the movable rack closely adhere to the guiding groove under the action of the internal cavity return spring, through the ingenious design of the rotating table and the guiding groove, as well as the coordinated operation of the movable rack, the positioning mechanism and a series of gears, the automatic clamping and relaxation of the LED filament module are realized, greatly reducing the manual operation links, improving the automation level of the packaging process, reducing the operation of personnel in multiple links, effectively avoiding the damage of the flexible LED filament module packaging caused by human work errors, improving the qualification rate of product packaging. The automatic clamping and relaxation process enables the LED filament module to quickly flow through areas such as the dispensing equipment mounting seat and the curing box, which is conducive to realizing large-scale continuous production, significantly improving the packaging efficiency. Compared with the fully automatic dispensing and packaging equipment with complex and numerous electrical controls on the market, the structure of this device is designed simply, without complex electrical controls, reducing the production cost, and at the same time, the maintenance is more convenient, reducing the later maintenance cost.

[0024] 2. The present invention is provided with an automatic feeding and discharging mechanism. When the positioning mechanism moves towards the dispensing equipment mounting seat station, the change in the distance between the rotating table and the guiding groove squeezes the movable rack, triggering a series of linkage reactions. The second rack plate moves synchronously to drive the second transmission gear to rotate, and then drives the guiding roller to rotate through a belt. The guiding roller contacts the bottom of the LED filament module and quickly pushes the module towards the inner end of the positioning mechanism by friction and quickly completes the positioning, greatly shortening the positioning time and effectively improving the overall packaging efficiency. When the positioning mechanism moves out of the curing box, the change in the distance between the rotating table and the guiding groove and the action of the return spring drive the second transmission gear to reverse, realizing the reverse rotation of the guiding roller. This enables the LED filament module to be conveniently discharged at the position of the discharging conveyor installation groove, further improving the production process and ensuring the high efficiency and smoothness of the entire packaging process. The automatic feeding and discharging mechanism and the clamping mechanism cooperate with each other. After the LED filament module smoothly enters the positioning mechanism through the feeding conveyor, the subsequent movement and positioning operations are automatically carried out, and there is no need for too much manual intervention throughout the process. This greatly reduces the consumption of manual operation time and energy and significantly improves the automation level of the feeding link.

[0025] 3. The present invention is provided with a curing box. This design enables the LED filament module after dispensing to be gradually processed at different temperature stages. The pre-baking at 60 - 80 °C in the preheating chamber can initially dry and cure the glue, avoiding problems such as the flow and deformation of the glue during the subsequent rapid temperature rise. Entering the curing chamber and heating up to 130 - 160 °C can fully cure the glue, enhancing the bonding strength between the glue and the LED filament module, thereby improving the quality and stability of the encapsulation. Through the setting of the heat recovery pipe and the fan, the effective recovery and utilization of heat are realized. In the heat dissipation chamber, the fan is turned on to extract the internal air, and the external air cools the LED filament module as it passes through. The air heated through heat exchange enters the preheating chamber through the heat recovery pipe, providing part of the heat for the preheating chamber. Such a design reduces the energy required for heating the preheating chamber, lowers the energy consumption of the entire curing process, and saves production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a perspective view of the present invention;

[0027] Figure 2 is a front view of the present invention;

[0028] Figure 3 is a top view of the internal structure of the present invention;

[0029] Figure 4 is a perspective view of the positioning mechanism of the present invention;

[0030] Figure 5 is a perspective view of the first transmission angle inside the positioning mechanism of the present invention;

[0031] Figure 6 is a perspective view of the second transmission angle inside the positioning mechanism of the present invention.

[0032] In the figures: 1, base; 2, equipment installation table; 3, rotating table; 4, curing box; 5, preheating chamber; 6, curing chamber; 7, heat dissipation chamber; 8, heating device; 9, dispensing equipment mounting seat; 10, feeding conveyor installation groove; 11, discharging conveyor installation groove; 12, guiding groove; 13, positioning mechanism; 14, heat recovery pipe; 15, fan; 16, heating wire; 17, movable rack; 18, driving gear; 19, clamping plate; 20, fixing plate; 21, telescopic adjustment seat; 22, handwheel; 23, telescopic rod; 24, positioning block; 25, guiding roller; 26, rotating roller; 27, first transmission gear; 28, first driven gear; 29, first rack plate; 30, second rack plate; 31, second transmission gear; 32, second driven gear; 33, belt; 34, return spring. DETAILED DESCRIPTION OF THE INVENTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0034] Please refer to Figure 1-6 , an embodiment provided by the present invention: a packaging auxiliary device for a phosphor-containing flexible LED filament, including a base 1. A rotating table 3 is provided at the middle position of the upper end surface of the base 1, and the rotating table 3 is connected to the base 1 through a bearing. A reduction motor for driving the rotation of the rotating table 3 is provided inside the base 1. An equipment installation table 2 welded and fixed to the base 1 is arranged outside the rotating table 3. A guide groove 12 is provided between the equipment installation table 2 and the rotating table 3. The guide groove 12 is composed of two circles spliced together. One of the circles is concentric with the rotating table 3, and the other circle is eccentric with the rotating table 3. An inlet conveyor installation groove 10, a dispensing equipment installation seat 9, a curing box 4, and an outlet conveyor installation groove 11 are sequentially arranged in a ring shape on the upper end surface of the equipment installation table 2. Six groups of positioning mechanisms 13 are arranged on the upper end surface of the rotating table 3 at equal intervals in a ring shape, and the positioning mechanisms 13 are clamped with the rotating table 3. A movable rack 17 is slidably installed at the outer end of the positioning mechanism 13. The outer end of the movable rack 17 is in an arc structure, and the arc structure fits with the guide groove 12. Clamping plates 19 are symmetrically installed on both sides of the upper end surface of the positioning mechanism 13. When the movable rack 17 is at the positions of the guide groove 12 corresponding to the inlet conveyor installation groove 10 and the outlet conveyor installation groove 11, the clamping plates 19 remain open. When the movable rack 17 is at the positions of the guide groove 12 corresponding to the dispensing equipment installation seat 9 and the curing box 4, the clamping plates 19 remain clamped. A guide roller 25 is rotatably installed at the center position of the upper end surface of the positioning mechanism 13. When the positioning mechanism 13 moves from the inlet conveyor installation groove 10 towards the dispensing equipment installation seat 9, the guide roller 25 rotates clockwise. Conversely, when the positioning mechanism 13 moves from the curing box 4 towards the outlet conveyor installation groove 11, the guide roller 25 rotates counterclockwise.

[0035] Please refer to Figure 3 , Figure 4 and Figure 5A first transmission gear 27 is installed at the center position inside the positioning mechanism 13, and the first transmission gear 27 is rotatably connected to the positioning mechanism 13. One side of the first transmission gear 27 is meshed with a driving gear 18, and the driving gear 18 is respectively meshed with the first transmission gear 27 and the movable rack 17. A first driven gear 28 is fixed to the shaft at the upper end of the first transmission gear 27. A first rack plate 29 is installed at the front and rear of the first driven gear 28. The first rack plate 29 is limited by sliding with the positioning mechanism 13, and the first rack plate 29 is meshed with the first driven gear 28. The first rack plate 29 is fixed to the bottom of the clamping plate 19 by a connecting rod. A return spring 34 is installed in the groove in which the movable rack 17 and the positioning mechanism 13 slide. Two return springs 34 are symmetrically provided, and the two ends of the return spring 34 are respectively fixed to the movable rack 17 and the positioning mechanism 13;

[0036] When the positioning mechanism 13 is in the position of the feed conveyor mounting groove 10, the movable rack 17 remains fully extended and the clamping plate 19 remains in the maximum opening state. The LED filament module guided by the conveyor can easily enter the interior of the positioning mechanism 13 through the roller 26. When the turntable 3 rotates, the distance between the center of the turntable 3 and the guide groove 12 is linearly reduced, which squeezes the movable rack 17 and causes it to gradually shrink toward the interior of the positioning mechanism 13. During the shrinkage process, the rack and the driving gear 18 drive the first transmission gear 27 and the first driven gear 28 to rotate under the meshing action. At the same time, the first driven gear 28 is meshed with the first rack plate 29, converting the rotational motion into linear motion. The rack plate 29 drives the clamping plate 19 toward the LED filament module until it is clamped and fixed. Then, when the positioning mechanism 13 passes through the area corresponding to the dispensing equipment mounting seat 9 and the curing box 4, it can ensure that the LED filament module is fixed, providing a good foundation for the packaging operation. When the positioning mechanism 13 is moved out of the curing box 4, the distance between the center of the rotating table 3 and the guide groove 12 is linearly expanded, and the reset spring 34 supports the movable rack 17. In the process of extending outward, the driving gear 18 is driven to reverse, thereby realizing the loosening of the LED filament module by the clamping plate 19 assembly with the cooperation of multiple gears, so that the material can be easily unloaded at the position of the discharging conveyor mounting groove 11.

[0037] See also Figure 3 、 Figure 4 and Figure 5, on the side of one end of the movable rack 17 located inside the positioning mechanism 13, a second rack plate 30 is fixedly arranged. At the rear side of the upper end of the second rack plate 30, a second driving gear 31 is meshed and connected, and the second driving gear 31 is rotatably connected to the positioning mechanism 13. At the upper end of the second driving gear 31, a second driven gear 32 is meshed and connected. One end of the shaft of the second driven gear 32 is rotatably connected to the positioning mechanism 13, and the shaft at the other end of the second driven gear 32 is connected to the shaft at one end of the guide roller 25 through a belt 33. There are multiple guide rollers 26 arranged before and after the roller 26, and both ends of the guide roller 26 are respectively rotatably connected to the positioning mechanism 13;

[0038] It can cooperate with the clamping mechanism. After the LED filament module enters the inside of the positioning mechanism 13 through the feeding conveyor and moves towards the dispensing equipment mounting seat 9 station, the distance between the center of the rotating table 3 and the guide groove 12 linearly decreases, forming extrusion on the movable rack 17, causing it to gradually contract towards the inside of the positioning mechanism 13. During the contraction process, the second rack plate 30 on one side of the movable rack 17 also moves synchronously and meshes with the second driving gear 31 above, thereby driving the second driving gear 31 to rotate. One end of the shaft of the second driving gear 31 is connected to the shaft at one end of the guide roller 25 through a belt 33. Therefore, the guide roller 25 is driven to rotate through the second driving gear 31. Since the guide roller 25 is in contact with the bottom of the LED filament module, during the process of the positioning mechanism 13 moving towards the dispensing equipment mounting seat 9 station under the friction effect, the LED filament module is driven by the guide roller 25 to quickly move towards the inner end of the positioning mechanism 13 until it contacts the fixed plate 20 assembly to form the positioning of the LED filament module. Similarly, when the positioning mechanism 13 is moved out of the curing box 4, the distance between the center of the rotating table 3 and the guide groove 12 linearly increases. With the support of the return spring 34 for the movable rack 17, during the process of extending towards the outside, the second driving gear 31 is driven to reverse, so as to realize the reverse rotation of the guide roller 25 under the cooperation of the gear and the belt 33, facilitating convenient feeding at the position of the discharge conveyor mounting groove 11.

[0039] Please refer to Figure 1 and Figure 4 , on the rear side of the upper end surface of the positioning mechanism 13, a fixed plate 20 is welded and fixed. At one end of both the clamping plate 19 and the fixed plate 20, a telescopic adjustment seat 21 is fixedly arranged. Inside the telescopic adjustment seat 21, a telescopic rod 23 is slidably limited. The telescopic rods 23 respectively penetrate through the clamping plate 19 and the fixed plate 20. At one end of each telescopic rod 23, a positioning block 24 is fixedly arranged. At the outer end of the telescopic adjustment seat 21, a handwheel 22 is rotatably installed. At one end of the shaft of the handwheel 22, a screw rod is fixedly arranged. The screw rod extends into the inside of the telescopic rod 23, and the external thread of the screw rod is adapted to the internal thread hole of the telescopic rod 23;

[0040] By rotating the handwheel 22, the screw rod on the shaft of the handwheel 22 is driven to rotate. Under the frictional fit with the inner hole of the telescopic rod 23, the rotational motion is converted into a linear motion. The positioning block 24 is driven by the telescopic rod 23 to perform telescopic adjustment. The positioning block 24 on the inner side of the clamping plate 19 is used for fine adjustment according to the width of the LED filament module to ensure the clamping effect. The positioning block 24 at the front end of the fixing plate 20 is used for fine adjustment according to the length of the LED filament module to ensure that the LED filament module can move to the designated position in cooperation with the guide roller 25, facilitating the dispensing process of the dispenser at the dispensing equipment mounting seat 9. This telescopic adjustment seat 21 can further improve the flexibility of the positioning mechanism 13.

[0041] Please refer to Figure 1 and Figure 2 , inside the curing box 4, there are successively arranged a preheating chamber 5, a curing chamber 6 and a heat dissipation chamber 7. Grooves for the positioning mechanism 13 to pass through are opened on the partitions between the preheating chamber 5, the curing chamber 6 and the heat dissipation chamber 7. A heating device 8 is installed at the upper end of the curing chamber 6. A heat recovery pipe 14 is arranged between the preheating chamber 5 and the heat dissipation chamber 7. A blower 15 is installed on one side inside the heat recovery pipe 14, and an electric heating wire 16 is installed on the other side inside the heat recovery pipe 14. An air inlet groove is opened on one side of the curing box 4 where the heat dissipation chamber 7 is located;

[0042] The curing box 4 is composed of a preheating chamber 5, a curing chamber 6 and a heat dissipation chamber 7. The positioning mechanism 13 pre-bakes the dispensed LED filament module in the preheating chamber 5 at a temperature of 60 - 80 degrees Celsius. After entering the curing chamber 6, the temperature rises to 130 - 160 degrees Celsius. Finally, it enters the heat dissipation chamber 7. By turning on the blower 15 inside the heat recovery pipe 14, the air inside the heat dissipation chamber 7 is exhausted. On the one hand, the external air can cool the LED filament module after passing through it. On the other hand, the air after heat exchange is heated and then enters the preheating chamber 5 through the heat recovery pipe 14.

[0043] The encapsulation method of the encapsulation auxiliary device for the phosphor-containing flexible LED filament includes the following steps:

[0044] Step 1: In the initial state, the positioning mechanism corresponds to the installation slot position of the feeding conveyor. At this time, due to the structure of the guide groove 12 and the action of the return spring 34, the movable rack 17 is fully extended, and the clamping plate 19 remains in the maximum opening state. The LED filament module is conveyed by the feeding conveyor and enters the interior of the positioning mechanism 13 with the help of the roller 26;

[0045] Step 2: The rotating table 3 starts to rotate, and the distance between the center of the rotating table 3 and the guiding groove 12 linearly decreases, squeezing the movable rack 17 to contract towards the inside of the positioning mechanism 13. The second rack plate 30 on one side of the movable rack 17 moves synchronously, meshes with the second transmission gear 31, drives the second transmission gear 31 to rotate. The second transmission gear 31 drives the guiding roller 25 to rotate through the belt 33. The guiding roller 25 contacts the bottom of the LED filament module. Under the friction action, during the process of the LED filament module moving towards the dispensing equipment mounting seat 9 station in the positioning mechanism 13, it quickly moves towards the inner end of the positioning mechanism 13 until it contacts the fixed plate 20 assembly to complete the positioning;

[0046] Step 3: During the contraction of the movable rack 17, the rack meshes with the driving gear 18, drives the first transmission gear 27 and the first driven gear 28 to rotate. The first driven gear 28 meshes with the first rack plate 29, converts the rotational motion into a linear motion, and drives the clamping plate 19 to approach the LED filament module through the first rack plate 29 until it clamps and fixes it;

[0047] Step 4: After the positioning mechanism 13 clamps the LED filament module, it passes through the area of the dispensing equipment mounting seat 9, and the LED filament module is dispensed at the dispensing equipment mounting seat 9;

[0048] Step 5: Subsequently, it enters the preheating chamber 5 of the curing oven 4, and the dispensed LED filament module is pre-baked, with the temperature controlled at 60 - 80 degrees Celsius. After coming out of the preheating chamber 5, it enters the curing chamber 6, and the temperature is raised to 130 - 160 degrees Celsius to fully cure the glue. Finally, it enters the heat dissipation chamber 7, the fan 15 inside the heat recovery pipe 14 is turned on, the air inside the heat dissipation chamber 7 is pumped out, the external air cools the LED filament module after passing through it, and the air heated through heat exchange enters the preheating chamber 5 through the heat recovery pipe 14;

[0049] Step 6: After being removed from the curing oven 4, the distance between the center of the rotating table 3 and the guiding groove 12 linearly increases. Under the supporting action of the return spring 34 on the movable rack 17, the movable rack 17 extends outwards, drives the driving gear 18 to reverse. With the cooperation of multiple gears, the clamping plate assembly relaxes the LED filament module. At the same time, the extension of the movable rack 17 drives the second transmission gear 31 to reverse, and through the cooperation of the gear and the belt 33, the reverse rotation of the guiding roller 25 is realized. It moves to the position of the discharge conveyor installation groove 11, and the LED filament module completes the blanking under the reverse rotation action of the guiding roller 25.

[0050] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in all respects, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Accordingly, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. An encapsulation auxiliary device for a phosphor-containing flexible LED filament, comprising a base (1), characterized in that: At the middle position of the upper end face of the base (1), a rotating table (3) is provided, and the rotating table (3) is connected to the base (1) through a bearing. An equipment installation table (2) welded and fixed to the base (1) is arranged on the outer side of the rotating table (3). A guiding groove (12) is provided between the equipment installation table (2) and the rotating table (3). The guiding groove (12) is formed by splicing two circles. One of the circles is concentric with the rotating table (3), and the other circle is eccentric with the rotating table (3). An inlet conveyor installation groove (10), a dispensing equipment installation seat (9), a curing box (4), and an outlet conveyor installation groove (11) are sequentially arranged in a ring shape on the upper end face of the equipment installation table (2). Six groups of positioning mechanisms (13) evenly distributed at equal intervals in a ring shape are arranged on the upper end face of the rotating table (3), and the positioning mechanisms (13) are clamped with the rotating table (3). A movable rack (17) is slidably installed at the outer end of the positioning mechanism (13). The outer end of the movable rack (17) is of an arc structure, and the arc structure fits with the guiding groove (12). Clamping plates (19) are symmetrically installed on both sides of the upper end face of the positioning mechanism (13). When the movable rack (17) is at the position of the guiding groove (12) corresponding to the inlet conveyor installation groove (10) and the outlet conveyor installation groove (11), the clamping plates (19) are kept open. When the movable rack (17) is at the position of the guiding groove (12) corresponding to the dispensing equipment installation seat (9) and the curing box (4), the clamping plates (19) are kept clamped. A guiding roller (25) is rotatably installed at the center position of the upper end face of the positioning mechanism (13). When the positioning mechanism (13) moves from the inlet conveyor installation groove (10) towards the dispensing equipment installation seat (9), the guiding roller (25) rotates clockwise. On the contrary, when the positioning mechanism (13) moves from the curing box (4) towards the outlet conveyor installation groove (11), the guiding roller (25) rotates counterclockwise.

2. The encapsulation auxiliary device for a phosphor-containing flexible LED filament according to claim 1, wherein: A first driving gear (27) is installed at the center position inside the positioning mechanism (13), and the first driving gear (27) is rotatably connected to the positioning mechanism (13). A driving gear (18) is meshed and connected to one side of the first driving gear (27). The driving gear (18) is meshed and connected to the first driving gear (27) and the movable rack (17) respectively. A first driven gear (28) is fixedly arranged on the shaft at the upper end of the first driving gear (27). First rack plates (29) are installed in front of and behind the first driven gear (28). The first rack plates (29) are slidably limited by the positioning mechanism (13), and the first rack plates (29) are meshed and connected to the first driven gear (28). The first rack plates (29) and the bottoms of the clamping plates (19) are fixed through connecting rods.

3. The encapsulation auxiliary device for a phosphor-containing flexible LED filament according to claim 2, wherein: One side of the end of the movable rack (17) located inside the positioning mechanism (13) is fixedly provided with a second rack plate (30). The rear side of the upper end of the second rack plate (30) is meshed and connected with a second transmission gear (31), and the second transmission gear (31) is rotatably connected with the positioning mechanism (13). The upper end of the second transmission gear (31) is meshed and connected with a second driven gear (32). One end of the shaft of the second driven gear (32) is rotatably connected with the positioning mechanism (13), and the shaft of the other end of the second driven gear (32) is connected with the shaft of one end of the guide roller (25) through a belt (33).

4. An encapsulation auxiliary device for a phosphor-containing flexible LED filament according to claim 3, characterized in that: A fixed plate (20) is welded and fixed on the rear side of the upper end surface of the positioning mechanism (13). One ends of the clamping plate (19) and the fixed plate (20) are both fixedly provided with telescopic adjusting seats (21). A telescopic rod (23) is slidably limited inside the telescopic adjusting seat (21). The telescopic rods (23) respectively penetrate through the clamping plate (19) and the fixed plate (20). One ends of the telescopic rods (23) are both fixedly provided with positioning blocks (24). A hand wheel (22) is rotatably installed at the outer end of the telescopic adjusting seat (21). A screw rod is fixedly provided at one end of the shaft of the hand wheel (22). The screw rod extends into the telescopic rod (23), and the external thread of the screw rod is adapted to the internal screw hole of the telescopic rod (23).

5. The encapsulation auxiliary device of a phosphor-containing flexible LED filament according to claim 4, characterized in that: Inside the curing box (4), a preheating chamber (5), a curing chamber (6) and a heat dissipation chamber (7) are sequentially arranged. Grooves for the positioning mechanism (13) to pass through are opened on the partitions between the preheating chamber (5), the curing chamber (6) and the heat dissipation chamber (7). A heating device (8) is installed at the upper end of the curing chamber (6).

6. The encapsulation auxiliary device of a phosphor-containing flexible LED filament according to claim 5, characterized in that: A heat recovery pipe (14) is arranged between the preheating chamber (5) and the heat dissipation chamber (7). A blower (15) is installed on one side inside the heat recovery pipe (14). A heating wire (16) is installed on the other side inside the heat recovery pipe (14). An air inlet groove is opened on one side of the curing box (4) where the heat dissipation chamber (7) is located.

7. An encapsulation auxiliary device for a phosphor-containing flexible LED filament according to claim 6, characterized in that: A return spring (34) is installed in the groove where the movable rack (17) slides with the positioning mechanism (13). Two return springs (34) are symmetrically arranged, and the two ends of the return spring (34) are respectively fixed to the movable rack (17) and the positioning mechanism (13).

8. An encapsulation auxiliary device for a phosphor-containing flexible LED filament according to claim 7, characterized in that: A plurality of rollers (26) are arranged in the front and rear of the roller (26), and the two ends of the roller (26) are respectively rotatably connected with the positioning mechanism (13).

9. An encapsulation auxiliary device for a phosphor-containing flexible LED filament according to claim 8, characterized in that: A reduction motor for driving the rotary table (3) to rotate is arranged inside the base (1).

10. The encapsulation method of the encapsulation auxiliary device for the phosphor-containing flexible LED filament according to claim 9, characterized in that: It includes the following steps: Step 1: In the initial state, the positioning mechanism corresponds to the installation groove position of the feeding conveyor. At this time, due to the structure of the guide groove (12) and the action of the return spring (34), the movable rack (17) is fully extended, the clamping plate (19) remains in the maximum opening state, the LED filament module is conveyed by the feeding conveyor, and enters the inside of the positioning mechanism (13) with the help of the roller (26). Step 2: The rotary table (3) starts to rotate, and the distance between the center of the rotary table (3) and the guide groove (12) linearly decreases, squeezing the movable rack (17) to contract towards the inside of the positioning mechanism (13). The second rack plate (30) on one side of the movable rack (17) moves synchronously, meshes with the second transmission gear (31), drives the second transmission gear (31) to rotate. The second transmission gear (31) drives the guide roller (25) to rotate through the belt (33). The guide roller (25) contacts the bottom of the LED filament module. Under the friction action, during the process of the LED filament module moving towards the dispensing equipment mounting seat (9) station in the positioning mechanism (13), it quickly moves towards the inner end of the positioning mechanism (13) until it contacts the fixed plate (20) assembly to complete the positioning; Step 3: During the contraction of the movable rack (17), the rack meshes with the driving gear (18), drives the first transmission gear (27) and the first driven gear (28) to rotate. The first driven gear (28) meshes with the first rack plate (29), converts the rotational motion into a linear motion, and drives the clamping plate (19) to approach the LED filament module through the first rack plate (29) until it clamps and fixes it; Step 4: After the positioning mechanism (13) clamps the LED filament module, it passes through the area of the dispensing equipment mounting seat (9), and the LED filament module is dispensed at the dispensing equipment mounting seat (9); Step 5: Subsequently, it enters the preheating chamber (5) of the curing oven (4) to pre-bake the dispensed LED filament module, with the temperature controlled at 60 - 80 degrees Celsius. After coming out of the preheating chamber (5), it enters the curing chamber (6), and the temperature is raised to 130 - 160 degrees Celsius to fully cure the glue. Finally, it enters the heat dissipation chamber (7), the fan (15) inside the heat recovery pipe (14) is turned on, the air inside the heat dissipation chamber (7) is pumped out, the external air cools the LED filament module after passing through it, and the air heated through heat exchange enters the preheating chamber (5) through the heat recovery pipe (14); Step 6: After being removed from the curing oven (4), the distance between the center of the rotary table (3) and the guide groove (12) linearly increases. Under the supporting action of the return spring (34) on the movable rack (17), the movable rack (17) extends outwards, drives the driving gear (18) to reverse. With the cooperation of multiple gears, the clamping plate assembly releases the LED filament module. At the same time, the extension of the movable rack (17) drives the second transmission gear (31) to reverse, and through the cooperation of the gear and the belt (33), the guide roller (25) rotates in the reverse direction, and it moves to the position of the discharge conveyor installation groove (11). The LED filament module completes the blanking under the reverse rotation action of the guide roller (25).

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