Dispensing device for LED lamp filament processing

Abstract

The utility model relates to the technical field of LED (light-emitting diode) dispensing, in particular to a dispensing device for LED filament processing, which comprises a workbench, a positioning mechanism is arranged above the workbench, a glue scraping mechanism is further arranged on the positioning mechanism, a dispensing mechanism is further arranged above the workbench, and the dispensing mechanism is positioned on one side of the positioning mechanism. When a plurality of lamp filaments on a lamp filament group need to be dispensed, firstly, contact pieces distributed at the two ends of the lamp filament group can be placed in the positioning seats respectively, and then, through retraction of a piston rod II of a cylinder II, a connecting plate can be matched with a connecting rod and can drive a pressing plate to move downwards, so that the pressing plate can be matched with the positioning seats to extrude and position the contact pieces; in order to ensure that the filaments of the filament group can be in a tight state during dispensing, the opposite movement of the positioning seats distributed on the two sides can be realized through the stretching of the piston rod I of the air cylinder I, so that the filament part can be pulled.

Description

Technical Field

[0001] This utility model relates to the field of LED dispensing technology, and specifically discloses a dispensing device for LED filament processing. Background Technology

[0002] When LED filaments are in operation, they typically emit light of a single wavelength, such as blue or ultraviolet light. By applying a mixture of phosphor and adhesive to the LED filament, this light can be converted into white light or other colors. The phosphor absorbs some of the blue or ultraviolet light and re-emits light of different wavelengths, thus achieving light color conversion.

[0003] For example, the utility model with authorization announcement number CN217940712U discloses a dispensing device for LED filament processing, including a platform. The top left and right sides of the platform are respectively connected to a top plate with a slide rail and a vertical plate installed at the bottom via a first support plate and a second support plate. The top of the platform is equipped with a placement slot with two openings. A first cylinder is installed on the left side of the vertical plate. The piston rod of the first cylinder is connected to a slider. A second cylinder is installed at the bottom of the slider. The piston rod of the second cylinder is connected to a lifting plate with a dispensing mechanism installed at the bottom. A horizontal plate is installed on the right side of the first support plate. A material storage mechanism and a conveying pump are installed on the horizontal plate. The conveying pump is connected to the material storage mechanism and the dispensing mechanism by a connecting rigid pipe with a valve and a connecting flexible pipe, respectively. A drying mechanism is installed on the left side of the second support plate. A controller is installed on the top left side of the platform. The controller is electrically connected to the first cylinder, the second cylinder and the conveying pump. Currently, LED filaments are mostly used in combination structures. The most common method is to arrange multiple filaments in parallel to form a filament group. This ensures the light intensity of the lighting equipment when the filaments are working. However, when applying adhesive to this type of filament group, adhesive is usually applied to each filament line one by one before arranging and assembling. This not only has low processing efficiency, but also easily damages the adhesive layer that has already been applied to the filaments during installation. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a dispensing device for LED filament processing, so as to solve the problem that the production method of dispensing and assembling filaments one by one is inefficient, and at the same time, it will damage the already formed adhesive layer structure on the filament during installation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dispensing device for LED filament processing, comprising a worktable, a positioning mechanism above the worktable, a scraping mechanism on the positioning mechanism, and a dispensing mechanism above the worktable, the dispensing mechanism being located on one side of the positioning mechanism.

[0006] Furthermore, the positioning mechanism includes a positioning platform, with a cylinder embedded on each side of the positioning platform. The cylinder has a piston rod for extension and retraction inside, and a movable seat is provided at the end of the piston rod.

[0007] A cylinder two is installed above the movable seat. Inside the cylinder two is a piston rod two for telescopic movement. A connecting plate is installed at the end of the piston rod two. A connecting rod is installed at the lower end of the connecting plate and at the end away from the cylinder two. A pressure plate is also installed at the lower end of the connecting rod.

[0008] Furthermore, a positioning seat is provided above the movable seat, and the pressure plate is fitted into the positioning seat. A filament assembly is provided between the positioning seats distributed on both sides.

[0009] Furthermore, the adhesive scraping mechanism includes a guide rail sub-guide rail, a guide rail sub-slider is slidably disposed above the guide rail sub-guide rail, and limit blocks are fixed at both ends of the guide rail sub-guide rail.

[0010] Motors are installed at both the front and rear ends of the guide rail slider one. The motors have internal shafts for driving, and threaded rods are installed at the ends of the shafts. Anti-disengagement blocks are installed at the upper ends of the threaded rods.

[0011] Furthermore, the surfaces of the two threaded rods are provided with a lower scraper and an upper scraper distributed vertically. The lower scraper is set on the reverse threaded protrusion, and the upper scraper is set on the forward threaded protrusion. The two ends of the lower scraper are respectively embedded with a lower threaded sleeve, which is threadedly connected to the surface of the reverse threaded protrusion. The two ends of the upper scraper are respectively embedded with an upper threaded sleeve, which is threadedly connected to the surface of the forward threaded protrusion. The lower scraper and the upper scraper are respectively provided with a semi-circular notch on one side of the filament assembly, which is the same number as the number of filaments.

[0012] Furthermore, extension plates are respectively provided on both sides of the lower end of the guide rail sub-guide one. One end of the extension plate is welded to the surface of the guide rail sub-guide one. An inner sleeve is provided through the surface of the extension plate. A threaded column is welded and fixed at the position of the inner sleeve of the positioning table. The surface of the threaded column slides through the interior of the inner sleeve. A threaded cap is threadedly connected to the upper end of the threaded column.

[0013] Furthermore, the dispensing mechanism includes a second guide rail, a second guide rail slider is slidably disposed on the surface of the second guide rail, and limit blocks are fixed at both ends of the second guide rail.

[0014] The upper end of the guide rail pair slider two is provided with the guide rail pair guide rail three, the surface of the guide rail pair guide rail three is slidably provided with the guide rail pair slider three, and the two ends of the guide rail pair guide rail three are respectively fixed with limit blocks three;

[0015] A cylinder is installed at the upper end of the guide rail slider three. Inside the cylinder three is a piston rod three for extension and retraction. A top plate is installed at the upper end of the piston rod three.

[0016] Furthermore, a dispensing head is provided through one end of the top plate near the positioning platform, and a glue pump is also provided at the upper end of the top plate. The glue pump's dispensing position is fixedly connected to the upper interface position of the dispensing head through a glue tube.

[0017] The working principle and beneficial effects of this solution are as follows: 1. When it is necessary to apply glue to several filaments on the filament assembly, the contact pieces distributed at both ends of the filament assembly can be placed in the positioning seats. Then, by retracting the piston rod of cylinder two, the connecting plate can cooperate with the connecting rod to move the pressure plate downward. Thus, the pressure plate can cooperate with the positioning seats to squeeze and position the contact pieces. In order to ensure that the filaments of the filament assembly are kept taut during glue application, the piston rod of cylinder one can extend and retract to move the positioning seats distributed on both sides in opposite directions. This allows the filaments to be pulled, and thus, the filaments can be straight and parallel to each other during glue application. When the glue head applies glue, the glue can be wrapped 360 degrees due to gravity.

[0018] 2. As described in point 1, after dispensing, the motor can be started by a forward / reverse switch, allowing the motor shaft to rotate in both directions. This enables the threaded rods to rotate in tandem, allowing the forward and reverse threaded protrusions to rotate synchronously. Consequently, the lower and upper scrapers, which span the two threaded rods and are distributed vertically, can move. Through the threaded sleeves on the scrapers and the corresponding threaded protrusions moving in relation to each other, as well as the limiting movement of the scrapers themselves connecting the two threaded rods, the lower and upper scrapers can move vertically in opposite directions. This allows the semi-circular notches on the upper and lower scrapers to cover the adhesive layer dispensed on the corresponding filament surface. By sliding the slider on the guide rail, the adhesive layer can be moved and smoothed, ensuring sufficient smoothness and flatness after dispensing onto the filament, thus avoiding uneven brightness due to inconsistent thickness.

[0019] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the distribution of the various mechanisms in the embodiment;

[0021] Figure 2 This is a schematic diagram of the overall structure of the embodiment;

[0022] Figure 3 This is a schematic diagram of the adhesive scraping mechanism in an embodiment;

[0023] Figure 4 This is an enlarged schematic diagram of point A in the embodiment;

[0024] Figure 5 This is a front view of the connection between the upper and lower scrapers and the threaded rod in an embodiment.

[0025] Figure 6 This is a side view of the dispensing mechanism in an embodiment.

[0026] The following are labels in the attached diagram: 1. Worktable; 2. Positioning mechanism; 3. Glue scraping mechanism; 4. Glue dispensing mechanism; 20. Positioning table; 21. Cylinder 1; 22. Moving seat; 23. Cylinder 2; 24. Connecting plate; 25. Connecting rod; 26. Pressure plate; 27. Positioning seat; 28. Filament assembly; 30. Guide rail pair guide rail 1; 31. Guide rail pair slider 1; 32. Motor; 33. Threaded rod; 34. Anti-detachment block; 35. Lower scraper; 36. Upper scraper; 37. Semicircle 38. Notch; 39. Lower threaded sleeve; 310. Upper threaded sleeve; 3001. Limiting block one; 3002. Extension plate; 3003. Internal sleeve; 3004. Threaded post; 3005. Threaded cap; 40. Guide rail pair guide rail two; 42. Limiting block two; 43. Guide rail pair slider two; 44. Guide rail pair guide rail three; 45. Limiting block three; 46. Cylinder three; 47. Top plate; 48. Adhesive pump; 49. Dispensing head; 410. Adhesive tube; 411. Guide rail pair slider three. Detailed Implementation

[0027] The following detailed description illustrates the specific implementation method:

[0028] Example

[0029] like Figures 1 to 6 As shown, a dispensing device for LED filament processing is disclosed, including a worktable 1, a positioning mechanism 2 is arranged above the worktable 1, a scraping mechanism 3 is also arranged on the positioning mechanism 2, and a dispensing mechanism 4 is also arranged above the worktable 1, with the dispensing mechanism 4 located on one side of the positioning mechanism 2.

[0030] The positioning mechanism 2 includes a positioning platform 20. The lower end of the positioning platform 20 is screwed onto the upper part of the worktable 1. The positioning platform 20 has a rectangular structure. Cylinders 21 are embedded on both sides of the positioning platform 20. The connection between the cylinders 21 and the positioning platform 20 is fixed with screws. Inside each cylinder 21 is a piston rod for extension and retraction. A movable seat 22 is located at the end of the piston rod. The movable seat 22 has a right-angle structure. The inner side of the movable seat 22 is fixed to the end of the piston rod with screws. The left and right movement of the movable seat 22 is achieved by extending and retracting the piston rod of the cylinder 21. There are two cylinders 21, symmetrically distributed at both ends of the positioning platform 20. The inner corners of the movable seats 22 are also fixed. The system includes corner blocks for reinforcement and support. A cylinder 23 is located above the movable base 22. The lower end of the cylinder 23 is fixedly assembled to the upper end of the movable base 22 by screws. A piston rod 2 for telescopic movement is located inside the cylinder 23. A connecting plate 24 is located at the end of the piston rod 2. The lower end of the connecting plate 24 is fixedly assembled to the end of the piston rod 2 by screws. The vertical height of the connecting plate 24 can be adjusted by telescopic movement of the piston rod 23. A connecting rod 25 is located at the lower end of the connecting plate 24 and the end away from the cylinder 23. The upper end of the connecting rod 25 is welded and fixed to the surface of the connecting plate 24. A pressure plate 26 is also located at the lower end of the connecting rod 25. The upper end of the pressure plate 26 is welded and fixed to the connecting rod 25 at the connection point.

[0031] A positioning seat 27 is also provided above the movable seat 22. The lower end of the positioning seat 27 is fixedly assembled to the end face of the movable seat 22 by screws. The pressure plate 26 fits into the positioning seat 27. A filament group 28 is provided between the positioning seats 27 on both sides. The filament group 28 consists of several filaments and contact pieces arranged side by side. The contact pieces are placed in the positioning seat 27 and are squeezed and fixed by the cooperation of the pressure plate 26 and the positioning seat 27. The filament can be tensioned by the extension and retraction of the piston rod of the cylinder 21, so that it can be kept taut during dispensing. The filament has a cylindrical structure. The taut state can ensure that the filament can achieve more uniform 360-degree dispensing processing during dispensing.

[0032] The adhesive scraping mechanism 3 includes a guide rail pair 30, which is arranged parallel to the filament assembly 28. A guide rail pair slider 31 is slidably mounted above the guide rail pair 30. This guide rail pair structure is a linear rolling friction type. In a linear rolling friction guide rail pair, rolling elements (such as balls or rollers) roll between the guide rail and the slider, thereby achieving low-friction linear motion. Limit blocks 310 are fixed at both ends of the guide rail pair 30. The limit blocks 310 can limit the sliding movement of the guide rail pair slider 31 at both ends. Motors 32 are respectively installed at the front and rear ends of 1. The outer wall of motor 32 is fixedly assembled with the surface of guide rail slider 31 through bracket. The motor 32 has a rotating shaft for driving inside. The end of the rotating shaft is provided with a threaded rod 33. The lower end of the threaded rod 33 is fixedly connected to the rotating shaft through a coupling. The threaded rod 33 is divided into upper and lower ends, including a forward thread protrusion and a reverse thread protrusion. The length of the forward thread protrusion and the length of the reverse thread protrusion are the same. An anti-detachment block 34 is provided at the upper end of the threaded rod 33. The anti-detachment block 34 is fixedly assembled with the end of the threaded rod 33 by screws.

[0033] Two threaded rods 33 have a lower scraper 35 and an upper scraper 36 arranged vertically on their surfaces. The lower scraper 35 is positioned on the reverse threaded protrusion, and the upper scraper 36 is positioned on the forward threaded protrusion. Lower threaded sleeves 38 are embedded at both ends of the lower scraper 35, and these sleeves are threadedly connected to the surface of the reverse threaded protrusion. Upper threaded sleeves 39 are embedded at both ends of the upper scraper 36, and these sleeves are threadedly connected to the surface of the forward threaded protrusion. A forward / reverse switch (HY2-8 model) is externally connected to the motor 32 via wires. The forward and reverse rotation of the motor 32 enables the two distributed threaded protrusions to move in tandem, spanning the two threaded rods. The scraper 33 is designed to be limited, allowing the lower scraper 35 and the upper scraper 36 to move or move closer to each other. The lower scraper 35 and the upper scraper 36 are respectively provided with a number of semi-circular notches 37 on one side of the filament group 28, which are the same as the number of filaments. The semi-circular notches 37 distributed at corresponding positions form a complete circular hole structure, which can cover and scrape the adhesive layer covering the filament surface 360 ​​degrees after the adhesive is applied. By sliding the guide rail slider 31 on the guide rail 30, the adhesive layer can be scraped horizontally, so that the surface of the adhesive layer can be smooth, and the light will not be affected by the different thickness of the adhesive when the filament is powered on.

[0034] Extension plates 3001 are respectively provided on both sides of the lower end of the guide rail sub-guide 30. One end of the extension plate 3001 is welded to the surface of the guide rail sub-guide 30, and the lower end of the extension plate 3001 is tightly attached to the surface of the positioning table 20. An inner sleeve 3002 is provided through the surface of the extension plate 3001. The connection between the inner sleeve 3002 and the extension plate 3001 is fixed by welding. A threaded post 3003 is welded and fixed to the positioning table 20 at the position of the inner sleeve 3002. The surface of the screw post 3003 and the interior of the inner sleeve 3002 are slidably connected. The upper end of the screw post 3003 is threadedly connected to the screw cap 3004. The lower end of the screw cap 3004 is tightly attached to the end face of the inner sleeve 3002. When it is necessary to disassemble the cleaning scraper structure, the screw caps 3004 in each position can be rotated to separate them from the screw post 3003. Thus, the screw post 3003 can be separated from the inner sleeve 3002, and the guide rail sub-guide 30 and the scraper structure can be removed together.

[0035] The dispensing mechanism 4 includes a second guide rail 40, the lower end of which is fixedly assembled to the surface of the worktable 1. A second guide rail slider 43 is slidably mounted on the surface of the second guide rail 40. Limit blocks 42 are fixed to both ends of the second guide rail 40 to prevent the second guide rail slider 43 from slipping off the surface of the second guide rail 40. A third guide rail 44 is provided at the upper end of the second guide rail slider 43. The lower end of the third guide rail 44 is fixedly assembled to the surface of the second guide rail slider 43 by screws. A third guide rail slider 411 is slidably mounted on the surface of the third guide rail 44. Limit blocks 45 are fixed to both ends of the third guide rail 44 to prevent the second guide rail slider 411 from slipping off the surface of the second guide rail 43. To prevent slippage when sliding on the surface of guide rail 3 44, a cylinder 3 46 is provided at the upper end of guide rail 3 slider 411. The lower end of cylinder 3 46 is fixed to the surface of guide rail 3 slider 411 by screws. A piston rod 3 for extension and retraction is provided inside cylinder 3 46. A top plate 47 is provided at the upper end of piston rod 3. The connection between top plate 47 and piston rod 3 is fixed by screws. By sliding guide rail 2 slider 43 on guide rail 2 40 and sliding guide rail 3 slider 411 on guide rail 3 44, and by extending and retracting piston rod 3 of cylinder 3 46, top plate 47 can achieve three-axis movement of X-axis, Y-axis and Z-axis, thereby making the displacement accuracy of the dispensing process more accurate and convenient.

[0036] A dispensing head 49 is installed through one end of the top plate 47 near the positioning platform 20. The dispensing head 49 is fixed to the top plate 47 by screws. A glue pump 48 is also installed at the upper end of the top plate 47. The lower end of the glue pump 48 is fixedly assembled to the surface of the top plate 47 by a bracket. The glue outlet of the glue pump 48 is fixedly connected to the upper interface of the dispensing head 49 through a glue tube 410. The glue inlet of the glue pump 48 is connected to an external glue material supply device through a pipe, which can realize the pumping of glue material and dispensing of filament through the dispensing head 49. It can move in three axes in conjunction with the top plate 47, thereby ensuring stable dispensing of glue between the dispensing head 49 and the filament.

[0037] In practice

[0038] When it is necessary to apply glue to several filaments on the filament assembly 28, the contact pieces distributed at both ends of the filament assembly 28 can be placed in the positioning seats 27 respectively. Then, by retracting the piston rod of cylinder 23, the connecting plate 24 can cooperate with the connecting rod 25 to move the pressure plate 26 downward. Thus, the pressure plate 26 can cooperate with the positioning seats 27 to squeeze and position the contact pieces. In order to ensure that the filaments of the filament assembly 28 are kept taut during glue application, the piston rod of cylinder 21 can extend and retract to move the positioning seats 27 distributed on both sides in opposite directions. This allows the filaments to be pulled, and the filaments can be kept straight and parallel to each other during glue application. When the glue application head 49 applies glue, the glue can be wrapped 360 degrees due to gravity.

[0039] By sliding the second slider 43 on the second guide rail 40 and cooperating with the third slider 411 on the third guide rail 44, as well as the extension and retraction of the piston rod of the third cylinder 46, the top plate 47 can achieve three-axis movement of X, Y and Z axes. This makes the displacement accuracy of the dispensing process more accurate and convenient. The glue pump 48 is connected to the external glue material supply equipment through a pipeline, which can realize the pumping of glue material. The filament is dispensed through the dispensing head 49. With the cooperation of the top plate 47, three-axis movement can be achieved, thus ensuring stable dispensing of glue head 49 and filament.

[0040] After dispensing is completed, the motor 32 can be started by the forward and reverse switch, so that the motor 32 can rotate in both directions, realizing the linkage of the threaded rod 33 and allowing the forward and reverse threaded protrusions to rotate synchronously. This allows the lower scraper 35 and the upper scraper 36, which span the two threaded rods 33 and are distributed vertically, to move. Through the threaded sleeve on the scraper and the corresponding threaded protrusion moving in the same threaded way, as well as the movement limit of the scraper itself connected across the two threaded rods 33, the lower scraper 35 and the upper scraper 36 can move vertically in opposite directions. This allows the semi-circular notches 37 on the upper scraper 35 and the lower scraper 36 to cover the glue layer dispensed on the corresponding filament surface. By sliding the guide rail slider 31 on the guide rail 30, the glue layer can be moved and smoothed, so that the glue layer has sufficient smoothness and flatness after being dispensed on the filament, avoiding uneven brightness due to uneven thickness.

[0041] When it is necessary to disassemble the cleaning scraper structure, the threaded caps 3004 in each position can be rotated to separate them from the threaded post 3003. This allows the threaded post 3003 to be separated from the inner sleeve 3002, and then the guide rail sub-guide 30 and the scraper structure can be removed together.

[0042] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics in the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A dispensing device for LED filament processing, characterized in that: The device includes a worktable, a positioning mechanism above the worktable, a glue scraping mechanism on the positioning mechanism, and a glue dispensing mechanism above the worktable, with the glue dispensing mechanism located on one side of the positioning mechanism; the positioning mechanism includes a positioning platform, with cylinders embedded on both sides of the positioning platform, a piston rod for extension and retraction inside the cylinder, and a movable seat at the end of the piston rod. A cylinder two is installed above the movable seat. A piston rod two for extension and retraction is installed inside the cylinder two. A connecting plate is installed at the end of the piston rod two. A connecting rod is installed at the lower end of the connecting plate and at the end away from the cylinder two. A pressure plate is also installed at the lower end of the connecting rod. A positioning seat is also provided above the movable seat. The pressure plate fits into the positioning seat and is inserted into it. A filament group is provided between the positioning seats distributed on both sides.

2. The dispensing device for LED filament processing according to claim 1, characterized in that: The scraping mechanism includes a guide rail sub-guide rail 1, a guide rail sub-slider 1 slidably disposed above the guide rail sub-guide rail 1, and limit blocks 1 fixed at both ends of the guide rail sub-guide rail 1 respectively. Motors are installed at both the front and rear ends of the guide rail slider one. The motors have internal shafts for driving, and threaded rods are installed at the ends of the shafts. Anti-disengagement blocks are installed at the upper ends of the threaded rods.

3. The dispensing device for LED filament processing according to claim 1, characterized in that: The surfaces of the two threaded rods are provided with a lower scraper and an upper scraper distributed vertically. The lower scraper is set on the reverse threaded protrusion, and the upper scraper is set on the forward threaded protrusion. The two ends of the lower scraper are respectively embedded with a lower threaded sleeve, which is threadedly connected to the surface of the reverse threaded protrusion. The two ends of the upper scraper are respectively embedded with an upper threaded sleeve, which is threadedly connected to the surface of the forward threaded protrusion. The lower scraper and the upper scraper are respectively provided with a semi-circular notch on one side of the filament assembly, which is the same number as the number of filaments.

4. The dispensing device for LED filament processing according to claim 2, characterized in that: The lower ends of the guide rail sub-guide are respectively provided with extension plates on both sides. One end of the extension plate is welded to the surface of the guide rail sub-guide. An inner sleeve is provided through the surface of the extension plate. A threaded column is welded and fixed to the positioning table at the position of the inner sleeve. The surface of the threaded column slides through the inside of the inner sleeve. A threaded cap is threadedly connected to the upper end of the threaded column.

5. The dispensing device for LED filament processing according to claim 3, characterized in that: The dispensing mechanism includes a second guide rail, a second guide rail slider is slidably disposed on the surface of the second guide rail, and limit blocks are fixed at both ends of the second guide rail. The upper end of the guide rail pair slider two is provided with the guide rail pair guide rail three, the surface of the guide rail pair guide rail three is slidably provided with the guide rail pair slider three, and the two ends of the guide rail pair guide rail three are respectively fixed with limit blocks three; A cylinder is installed at the upper end of the guide rail slider three. Inside the cylinder three is a piston rod three for extension and retraction. A top plate is installed at the upper end of the piston rod three.

6. The dispensing device for LED filament processing according to claim 5, characterized in that: A dispensing head is installed through one end of the top plate near the positioning platform, and a glue pump is also installed at the upper end of the top plate. The glue pump's dispensing position is fixedly connected to the upper interface of the dispensing head through a glue tube.

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