Solder paste printing equipment for mini-LED (light-emitting diode) and preparation process of solder paste printing equipment

Abstract

The invention discloses solder paste printing equipment for mini-LEDs and a preparation technology of the solder paste printing equipment, and relates to the field of printing device.The solder paste printing equipment comprises a base, a fixed disc is installed at the top of the base, a first motor is installed in the fixed disc, a rotary disc is fixed to the output end of the first motor, and multiple sets of installation frames are installed at the top of the rotary disc; and a plurality of sets of containing grooves are formed in the mounting frame, a jacking assembly is movably mounted in the mounting frame, a fixing plate is fixed to one side of the fixing disc, an air cylinder is mounted at the top of the fixing plate, and a connecting plate is fixed to the output end of the air cylinder. According to the PCB printing device, the multiple sets of mounting frames are arranged, PCBs are placed in the containing grooves during printing, the multiple sets of PCBs can be printed at the same time, the three sets of containing frames are arranged, the PCBs can be printed without a pause device during working, the working efficiency of printing is improved, the PCB printing device is divided into the feeding area, the printing area and the discharging area, and the printing efficiency is improved. And a plurality of groups of PCBs can be printed at one time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of printing equipment, in particular to a tin paste printing equipment for mini-LED and a preparation process thereof. BACKGROUND

[0002] The tin paste printing equipment is mainly used in the electronic assembly process, especially in the surface mount technology, to accurately print tin paste for bonding surface mount components (SMT components) to printed circuit boards (PCBs), and the accuracy of the printing process directly affects the quality and reliability of electronic products.

[0003] The existing printing equipment can usually only print a single circuit board, and after printing is completed, the equipment needs to be stopped, and then the printed circuit board is removed and a new circuit board is placed on top for printing. This method has low work efficiency. SUMMARY

[0004] Therefore, the present application aims to provide a tin paste printing equipment for mini-LED and a preparation process thereof to solve the technical problems mentioned in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a tin paste printing equipment for mini-LED and a preparation process thereof, comprising a base, a fixed disc is installed on the top of the base, a first motor is installed inside the fixed disc, and a turntable is fixed to the output end of the first motor, a plurality of mounting racks are installed on the top of the turntable, a plurality of placing grooves are formed in the inside of the mounting racks, a jacking assembly is movably installed in the inside of the mounting rack, a fixed plate is fixed on one side of the fixed disc, an air cylinder is installed on the top of the fixed plate, a connecting plate is fixed to the output end of the air cylinder, a clamping rod is fixed on one side of the connecting plate, a printing plate is installed on the outer wall of the clamping rod through bolts, a second motor is installed on the top of the connecting plate, a lead screw is installed on the output end of the second motor, a moving plate is movably installed in the inside of the printing plate, and a scraper is movably installed on the bottom of the moving plate.

[0006] By adopting the above technical solution, when printing, the PCBs can be placed in the placing grooves, and multiple PCBs can be printed at the same time. The three groups of placing racks can realize printing of the PCBs without stopping the device during work, improve the work efficiency of printing, and divide the device into a feeding area, a printing area, and a discharging area, which can print multiple PCBs at one time.

[0007] The jacking assembly further comprises a jacking plate and a cross plate, the cross plate is fixed to both ends of the jacking plate, a vertical rod is fixed to the bottom of the jacking plate, a roller is installed on the end of the vertical rod, a jacking block is fixed to the top of the fixed disc, and inclined surfaces are provided on both sides of the jacking block.

[0008] As preferably, the roller contacts the inclined surface on one side of the lifting block during rotation of the rotating disc, thereby moving the roller upward, the upward movement of the roller drives the lifting plate to move upward, the lifting plate drives the horizontal plate to move upward, the horizontal plate drives the printed board in the placing groove to be ejected, and then personnel take it down.

[0009] The application further provides that the two ends of the lifting plate are fixed with limiting rods, and the mounting frame is internally provided with through holes.

[0010] As preferably, the limiting rods cooperate with the through holes to limit the movement direction of the lifting plate, thereby avoiding the problem of rotation of the lifting plate.

[0011] The application further provides that the bottom end of the inner wall of the placing groove is provided with a groove.

[0012] As preferably, the groove can accommodate the lifting plate, so that the top of the lifting plate is attached to the bottom end of the inner wall of the placing groove, thereby facilitating the lifting of the circuit board.

[0013] The application further provides that the two sides of the scraper are fixed with limiting columns, the two sides of the inner wall of the printed board are provided with horizontal grooves, the two sides of the inner wall of the printed board are provided with inclined grooves and moving grooves, and the inner wall of the inclined groove is movably installed with a rotating rod.

[0014] As preferably, the rotating rod drives the moving plate to move above the printed board, the moving plate drives the scraper to move, the scraper moves to print the tin paste above the printed board on the circuit board, then the limiting column on one side of the scraper contacts the rotating rod, the scraper moves upward under the action of the rotating rod, when the limiting column moves into the moving groove, the scraper is separated from the top of the printed board, then the limiting column continues to move in the inner wall of the moving groove, and when it moves to the other side of the inner wall of the moving groove, the scraper moves downward to be attached to the top of the printed board under the action of its own weight, and the limiting column moves into the horizontal groove.

[0015] The application further provides that the top of the fixing disc is installed with a plurality of supporting wheels, and the supporting wheels contact the bottom of the rotating disc.

[0016] As preferably, the supporting wheels contact the bottom of the rotating disc, thereby avoiding the problem of deformation of the rotating disc during printing.

[0017] The application further provides that the number of the mounting frames is three, and the three mounting frames are evenly distributed on the top of the rotating disc.

[0018] As preferably, the plurality of mounting frames can improve the working efficiency of printing, without stopping the equipment, and the equipment is divided into a feeding area, a printing area and a discharging area.

[0019] The present invention is further configured such that two sets of limiting rods are fixed to the top of the fixing plate, and the limiting rods are disposed through the connecting plate.

[0020] Preferably, the connecting plate is limited by a limiting rod, so that the connecting plate can only slide on its outer wall.

[0021] The preparation process for solder paste printing for mini-LEDs includes the following steps: S1. Place solder paste on top of the printed circuit board, then place the printed circuit board into the placement slot, and then start the first motor; S2. The first motor drives the turntable to rotate 120 degrees, and then the first motor stops. After the first motor stops working, the cylinder drives the printed circuit board to move downward, so that the printed circuit board is in contact with the circuit board. S3. The second motor drives the scraper to move. When the scraper moves, it scrapes the solder paste so that the solder paste is printed on the top of the circuit board. Then the scraper moves upward without contacting the solder paste. The scraper moves to the back of the solder paste. After printing is completed, the cylinder drives the printed circuit board to reset. S4. The turntable then continues to rotate, lifting the circuit board inside the placement slot, making it easier for personnel to pick up and place the new circuit board into the placement slot.

[0022] In summary, the present invention has the following main beneficial effects: 1. This invention is equipped with a turntable, a placement rack, a placement slot, a printing plate, and a scraper. With multiple sets of mounting racks, PCBs are placed in the placement slots during printing, allowing multiple sets of PCBs to be printed simultaneously. Moreover, the three sets of placement racks enable PCB printing without pausing the process, improving printing efficiency. The invention is divided into a loading area, a printing area, and a unloading area, allowing multiple sets of PCBs to be printed at once.

[0023] 2. This invention features a lifting component. After printing is complete, the turntable rotates, and the rollers move upward under the action of the lifting block, thereby lifting multiple PCB boards inside the placement slot for easy removal by personnel. This eliminates the need for an additional drive component, making the process more convenient. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a perspective view of the mounting bracket of the present invention; Figure 4 This is a perspective view of the lifting plate of the present invention; Figure 5This is a perspective view of the printed circuit board of the present invention; Figure 6 This is a perspective view of the movable plate of the present invention.

[0025] Explanation of reference numerals in the attached figures: 1. Base; 2. Fixed plate; 21. Support wheel; 22. Lifting block; 3. First motor; 4. Turntable; 5. Mounting bracket; 51. Placement slot; 52. Groove; 53. Through hole; 54. Lifting plate; 55. Horizontal plate; 56. Vertical rod; 57. Limiting rod; 58. Roller; 6. Fixed plate; 61. Cylinder; 62. Limiting rod; 7. Connecting plate; 71. Clamping rod; 8. Printing plate; 81. Moving plate; 82. Scraper; 83. Limiting post; 84. Horizontal groove; 85. Moving groove; 86. Rotating rod; 87. Inclined groove; 9. Second motor; 91. Lead screw. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] The embodiments of the present invention will now be described.

[0028] Please see Figures 1-6 The system includes a base 1, a fixed plate 2 mounted on the top of the base 1, a first motor 3 mounted inside the fixed plate 2, a turntable 4 fixed to the output end of the first motor 3, multiple mounting brackets 5 mounted on the top of the turntable 4, multiple placement slots 51 opened inside the mounting brackets 5, a lifting component movably mounted inside the mounting brackets 5, a fixed plate 6 fixed to one side of the fixed plate 2, a cylinder 61 mounted on the top of the fixed plate 6, a connecting plate 7 fixed to the output end of the cylinder 61, a clamping rod 71 fixed to one side of the connecting plate 7, a printing plate 8 mounted on the outer wall of the clamping rod 71 by bolts, a second motor 9 mounted on the top of the connecting plate 7, a lead screw 91 mounted on the output end of the second motor 9, a movable plate 81 movably mounted inside the printing plate 8, and a scraper 82 movably mounted on the bottom of the movable plate 81.

[0029] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-4The lifting assembly includes a lifting plate 54 and a horizontal plate 55. The horizontal plate 55 is fixed at both ends of the lifting plate 54, and a vertical rod 56 is fixed at the bottom of the lifting plate 54. A roller 58 is installed at the end of the vertical rod 56. A lifting block 22 is fixed at the top of the fixed plate 2, and the lifting block 22 has inclined surfaces on both sides. During the rotation of the turntable 4, the roller 58 contacts the inclined surface on one side of the lifting block 22, thereby moving the roller 58 upward. When the roller 58 moves upward, it will drive the lifting plate 54 to move upward. The lifting plate 54 drives the horizontal plate 55 to move upward, pushing out the printing plate inside the placement slot 51, which is then removed by personnel.

[0030] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 and Figure 4 Limiting rods 57 are fixed at both ends of the lifting plate 54. The mounting bracket 5 has through holes 53 inside. By the limiting rods 57 cooperating with the through holes 53, the movement direction of the lifting plate 54 is limited, thus preventing the lifting plate 54 from rotating.

[0031] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 The bottom of the inner wall of the placement groove 51 is provided with a groove 52, which can be used to store the lifting plate 54, so that the top of the lifting plate 54 fits with the bottom of the inner wall of the placement groove, making it convenient to lift the circuit board.

[0032] For details regarding the above embodiments, please refer to [link / reference]. Figure 6 Limiting posts 83 are fixed on both sides of the scraper 82. Horizontal grooves 84 are formed on both sides of the inner wall of the printed circuit board 8, and inclined grooves 87 and moving grooves 85 are formed on both sides of the inner wall of the printed circuit board 8. A rotating rod 86 is movably installed on the inner wall of the inclined groove 87. When the lead screw 91 rotates, it drives the moving plate 81 to move above the printed circuit board 8. The movement of the moving plate 81 drives the scraper 82 to move. When the scraper 82 moves, it prints the solder paste above the printed circuit board 8 onto the circuit board. Then, when the scraper 82... When the limiting post 83 on one side contacts the rotating rod 86, the scraper 82 will move upward under the action of the rotating rod 86. When the limiting post 83 moves into the moving groove 85, the scraper 82 separates from the top of the printing plate 8. Then the limiting post 83 continues to move on the inner wall of the moving groove 85. When it moves to the other side of the inner wall of the moving groove 85, the scraper 82 will move downward under its own weight until it fits against the top of the printing plate 8. The limiting post 83 moves into the transverse groove 84.

[0033] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 The top of the fixed plate 2 is equipped with multiple sets of support wheels 21, and the support wheels 21 are in contact with the bottom of the turntable 4. By setting the support wheels 21 to contact the bottom of the turntable 4, the problem of the turntable 4 being easily deformed during printing is avoided.

[0034] For details regarding the above embodiments, please refer to [link / reference]. Figure 2 There are three sets of mounting frames 5, which are evenly distributed on the top of the turntable 4. By setting multiple sets of mounting frames 5, the printing efficiency can be improved without stopping the equipment. The area is divided into a feeding area, a printing area and a unloading area.

[0035] For details regarding the above embodiments, please refer to [link / reference]. Figure 2 Two sets of limiting rods 62 are fixed to the top of the fixed plate 6, and the limiting rods 62 are set through the connecting plate 7. The limiting rods 62 can limit the connecting plate 7, so that the connecting plate 7 can only slide on its outer wall.

[0036] The preparation process for solder paste printing for mini-LEDs includes the following steps: S1. Place solder paste on top of the printed circuit board, then place the printed circuit board into the placement slot, and then start the first motor; S2. The first motor drives the turntable to rotate 120 degrees, and then the first motor stops. After the first motor stops working, the cylinder drives the printed circuit board to move downward, so that the printed circuit board is in contact with the circuit board. S3. The second motor drives the scraper to move. When the scraper moves, it scrapes the solder paste so that the solder paste is printed on the top of the circuit board. Then the scraper moves upward without contacting the solder paste. The scraper moves to the back of the solder paste. After printing is completed, the cylinder drives the printed circuit board to reset. S4. The turntable then continues to rotate, lifting the circuit board inside the placement slot, making it easier for personnel to pick up and place the new circuit board into the placement slot.

[0037] In practical operation, this invention works as follows: Multiple circuit boards are placed inside the placement slot. Then, the first motor 3 is started, which drives the turntable 4 to rotate. As the turntable 4 rotates, the mounting bracket 5 rotates as well. The turntable 4 slowly rotates 120 degrees and then stops. Next, cylinder 61 is activated, which moves the printed circuit board 8 closer to the circuit board until it is in contact with it. Then, the second motor 9 is started, which drives the lead screw 91 to rotate. According to the lead screw principle, the rotation of the lead screw 91 moves the moving plate 81 above the printed circuit board 8. The movement of the moving plate 81 moves the scraper 82, which scrapes... When board 82 moves, it prints solder paste from the printed circuit board 8 onto the circuit board. Then, when the limiting post 83 on one side of scraper 82 contacts the rotating rod 86, scraper 82 moves upward under the action of rotating rod 86. When the limiting post 83 moves into the moving groove 85, scraper 82 separates from the top of printed circuit board 8. Then the limiting post 83 continues to move on the inner wall of moving groove 85. When it moves to the other side of the inner wall of moving groove 85, scraper 82 moves downward under its own weight until it is in contact with the top of printed circuit board 8. The limiting post 83 moves into the transverse groove 84, and then the second motor 9 stops working. After printing is completed, cylinder 61 drives the printing plate 8 to move upward, moving it away from the circuit board. Then, the first motor 3 is started, and the first motor 3 continues to drive the turntable 4 to rotate 120°. During the rotation of the turntable 4, the roller 58 contacts the inclined surface on one side of the lifting block 22, thereby moving the roller 58 upward. When the roller 58 moves upward, it drives the lifting plate 54 to move upward. The lifting plate 54 drives the horizontal plate 55 to move upward, pushing the printing plate inside the placement slot 51 out. Then, the personnel remove it. When the turntable 4 continues to rotate, under the action of gravity, the lifting plate falls into the groove 52, and a new circuit board is placed inside it.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A solder paste printing apparatus for mini-LEDs, comprising a base (1), characterized in that: The base (1) is equipped with a fixed plate (2) on top, and a first motor (3) is installed inside the fixed plate (2). A turntable (4) is fixed at the output end of the first motor (3). Multiple sets of mounting brackets (5) are installed on the top of the turntable (4). Multiple sets of placement slots (51) are opened inside the mounting brackets (5). A lifting assembly is movably installed inside the mounting brackets (5). A fixed plate (6) is fixed on one side of the fixed plate (2). A cylinder (61) is installed on the top of the fixed plate (6). A connecting plate (7) is fixed at the output end of the cylinder (61). A clamping rod (71) is fixed on one side of the connecting plate (7). A printing plate (8) is installed on the outer wall of the clamping rod (71) by bolts. A second motor (9) is installed on the top of the connecting plate (7). A lead screw (91) is installed at the output end of the second motor (9). A movable plate (81) is movably installed inside the printing plate (8). A scraper (82) is movably installed at the bottom of the movable plate (81).

2. The solder paste printing equipment for mini-LEDs according to claim 1, characterized in that: The lifting assembly includes a lifting plate (54) and a horizontal plate (55). The two ends of the lifting plate (54) are fixed with the horizontal plate (55), and the bottom of the lifting plate (54) is fixed with a vertical rod (56). The end of the vertical rod (56) is equipped with a roller (58). The top of the fixed plate (2) is fixed with a lifting block (22), and the two sides of the lifting block (22) are inclined.

3. The solder paste printing equipment for mini-LEDs according to claim 2, characterized in that: Limiting rods (57) are fixed at both ends of the lifting plate (54), and through holes (53) are provided inside the mounting bracket (5).

4. The solder paste printing equipment for mini-LEDs according to claim 2, characterized in that: The bottom end of the inner wall of the placement groove (51) is provided with a groove (52).

5. The solder paste printing equipment for mini-LEDs according to claim 1, characterized in that: Limiting posts (83) are fixed on both sides of the scraper (82), and horizontal grooves (84) are provided on both sides of the inner wall of the printing plate (8). Inclined grooves (87) and moving grooves (85) are provided on both sides of the inner wall of the printing plate (8). A rotating rod (86) is movably installed on the inner wall of the inclined groove (87).

6. The solder paste printing equipment for mini-LEDs according to claim 1, characterized in that: The top of the fixed disk (2) is equipped with multiple sets of support wheels (21), and the support wheels (21) are in contact with the bottom of the turntable (4).

7. The solder paste printing equipment for mini-LEDs according to claim 1, characterized in that: The number of mounting brackets (5) is three sets, and the three sets of mounting brackets (5) are evenly distributed on the top of the turntable (4).

8. The solder paste printing equipment for mini-LEDs according to claim 1, characterized in that: Two sets of limiting rods (62) are fixed to the top of the fixing plate (6), and the limiting rods (62) are set through the connecting plate (7).

9. A preparation process for solder paste printing for mini-LEDs, characterized in that, The process of using the solder paste printing equipment for mini-LEDs according to any one of claims 1-8 includes the following steps: S1. Place solder paste on top of the printed circuit board, then place the printed circuit board into the placement slot, and then start the first motor; S2. The first motor drives the turntable to rotate 120 degrees, and then the first motor stops. After the first motor stops working, the cylinder drives the printed circuit board to move downward, so that the printed circuit board is in contact with the circuit board. S3. The second motor drives the scraper to move. When the scraper moves, it scrapes the solder paste so that the solder paste is printed on the top of the circuit board. Then the scraper moves upward without contacting the solder paste. The scraper moves to the back of the solder paste. After printing is completed, the cylinder drives the printed circuit board to reset. S4. The turntable then continues to rotate, lifting the circuit board inside the placement slot, making it easier for personnel to pick up and place the new circuit board into the placement slot.

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