A dispensing device for PCBA board patching

Abstract

The application discloses a dispensing device for PCBA board patching, and belongs to the technical field of PCBA board patching, which comprises a support for supporting an upper end component, a kettle body is arranged at the upper end of the support, a power assembly for providing power is arranged at one side of the upper end of the kettle body, a variable speed mechanism for stepless adjustment of stirring speed is arranged at the output end of the power assembly, a stirring assembly for stirring red glue is arranged at the center of the inner cavity of the kettle body, a scraping mechanism for scraping residual red glue on the inner wall of the kettle body is arranged at one side of the stirring assembly, and a dispensing glue valve for uniform dispensing is arranged at the bottom end of the kettle body; the application can steplessly control stirring speed, adapt to red glue with different viscosities, realize kettle wall glue removal and scraper self-cleaning through cooperation of a V-shaped driving scraper and an L-shaped following scraper, spray Teflon coating on parts in the kettle to prevent red glue from adhering to and jamming components, effectively avoid red glue agglomeration and valve blockage, uniformly stir glue, stably discharge, and improve PCBA patching dispensing quality.

Description

Technical Field

[0001] This invention relates to the field of PCBA board mounting technology, and more specifically, to a dispensing device for PCBA board mounting. Background Technology

[0002] In the red glue dispensing process of PCBA surface mount production, the PCB board is first positioned and fixed on the tooling fixture. The equipment uses a dispensing needle to extrude a quantitative amount of red glue at the component mounting position according to the preset dot path. Then, the pick-and-place machine precisely presses the electronic components onto the glue dots. The components are bonded to the PCB board surface by the curing of the red glue. In actual mass production, the viscosity of the red glue is constantly changing due to the influence of ambient temperature and humidity. The workshop relies on manual adjustment of the glue dispensing and stirring parameters of the equipment based on human experience.

[0003] However, red glue has high viscosity and is easy to adhere and cure at room temperature. Existing PCBA patch dispensing equipment has a fixed stirring speed, which cannot be adapted to the actual viscosity of the red glue. When the viscosity is too high, insufficient stirring can easily lead to sedimentation and stratification. When the viscosity is too low, excessive stirring can cause air bubbles to be trapped, which seriously affects the dispensing quality. Traditional scraper structures rely on a single scraper to remove residual glue from the cylinder wall without a matching self-cleaning structure. Red glue is very easy to accumulate on the scraper surface, dry and fail. Cured red glue adhering to the cylinder wall falls off and mixes into the glue body, which can easily clog the feeding trough and dispensing valve.

[0004] Therefore, we have made improvements to this and proposed a dispensing device for PCBA board mounting. Summary of the Invention

[0005] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide a dispensing device for PCBA board mounting.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows: A dispensing device for PCBA board mounting includes a bracket for supporting an upper component. A vessel body is provided at the upper end of the bracket. A power component for providing power is provided on one side of the upper end of the vessel body. A speed-changing mechanism for steplessly adjusting the stirring rate is provided at the output end of the power component. A stirring component for stirring red glue is provided at the center of the inner cavity of the vessel body. A scraping mechanism for scraping off residual red glue on the inner wall of the vessel body is provided on one side of the stirring component. A dispensing valve for uniform dispensing is provided at the bottom end of the vessel body. Preferably, the vessel body includes a vessel body, which is fixedly connected to the center of the support. An upper cover is fixedly connected to the upper end of the vessel body, and a groove for discharging material is opened on the surface of the upper cover. A lower cover is fixedly connected to the lower end of the vessel body, and a material discharge groove for discharging material is evenly opened at the center of the lower cover near the edge. Preferably, the power assembly includes a motor mount, which is fixedly connected to one side of the upper end of the vessel body, and a power motor is fixedly connected to the upper end of the motor mount. Preferably, the transmission mechanism includes a support, which is fixedly connected to one side of the upper surface of the cover. An input shaft is rotatably connected to the inner cavity of the upper end of the support on one side, and the input shaft is fixedly connected to the output end of the power motor. A first synchronous belt is rotatably connected to the outer surface of the input shaft, and a first transmission shaft is rotatably connected to the inner cavity of the first synchronous belt on the side away from the input shaft. Preferably, an input cone wheel is fixedly connected to one side of the first drive shaft, a drive belt is slidably connected to the outer surface of the input cone wheel, a guide block is slidably connected to the outer surface of the upper end of the drive belt, a guide shaft is slidably connected to the inner cavity of the lower end of the guide block, and the guide shaft is fixedly connected to the inner cavity of the upper end of the support. Preferably, a second drive shaft is rotatably connected to the inner cavity on one side of the upper end of the support, an output cone wheel is fixedly connected to one side of the second drive shaft, the output cone wheel is rotatably connected to the input cone wheel through a drive belt, a second synchronous belt is rotatably connected to the outer surface of the second drive shaft, an output ratchet is rotatably connected to one side of the second synchronous belt through a shaft body, and the output ratchet is rotatably connected to the second synchronous belt and the second drive shaft. Preferably, the stirring assembly includes a stirring shaft, which is rotatably connected to the inner cavity of the upper cover and rotatably connected to the center of the upper surface of the lower cover. A transmission ratchet is rotatably connected to the outer surface of the top end of the stirring shaft, and the transmission ratchet and the output ratchet are meshed together. Connecting rods are uniformly and fixedly connected to the outer surface of the stirring shaft, and stirring blades are fixedly connected to the side of the multiple sets of connecting rods away from the stirring shaft. Preferably, the scraping mechanism includes a connecting plate, which is fixedly connected to the ends of two sets of connecting rods away from the stirring shaft. A suction cup is fixedly connected to the end of the connecting plate away from the connecting rods. A fixing column is fixedly connected to the end of the suction cup away from the connecting plate. A shaft seat is fixedly connected to one end of the fixing column. Multiple sets of shaft seats are symmetrically arranged. A longitudinal shaft is fixedly connected between each set of symmetrically arranged shaft seats. A follower scraper is slidably connected to the outer surface of the longitudinal shaft. Preferably, a first connecting column is fixedly connected to the inner cavity of the fixed column, and a second connecting column is fixedly connected to both ends of the first connecting column. An active scraper is fixedly connected to the side of the second connecting column away from the first connecting column, and the side of the active scraper away from the second connecting column is in close contact with the inner wall of the vessel body. Preferably, the active scraper is V-shaped on the side near the vessel body, the follower scraper is L-shaped on one side of its outer surface, and the follower scraper is in close contact with the outer surfaces of the two sets of active scrapers.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: The stirring speed is infinitely adjustable through a power component and a pulley-type conical gear transmission mechanism to adapt to the stirring needs of red glue with different viscosities. The continuous stirring of red glue in the reactor by the stirring component can effectively prevent glue sedimentation and stratification. The composite scraping structure composed of V-shaped active scraper and L-shaped follower scraper can not only scrape off the residual glue on the inner wall of the reactor, but also automatically clean the glue on the scraper surface. At the same time, the surface of the components in the inner cavity of the reactor is sprayed with Teflon anti-stick coating to prevent red glue from solidifying and sticking and causing parts to jam. The homogenized red glue is smoothly transported to the dispensing valve through the lower cover feeding chute. The whole structure is integrated and linked, without the need for additional driving components, which effectively reduces glue waste and valve blockage failure, and improves the uniformity of PCBA patch dispensing. Attached Figure Description

[0008] Figure 1 A schematic diagram of the overall structure of a dispensing device for PCBA board mounting provided in this application; Figure 2 A schematic diagram of the upper cover connection of a dispensing device for PCBA board mounting provided in this application; Figure 3 This application provides a disassembly diagram of the dispensing device for PCBA board mounting. Figure 4 A schematic diagram of the power component motor connection of a dispensing device for PCBA board mounting provided in this application; Figure 5 This application provides a disassembly diagram of the speed change mechanism of a dispensing device for PCBA board mounting. Figure 6 A schematic diagram of the stirring shaft connection of the stirring assembly of a dispensing device for PCBA board mounting provided in this application; Figure 7 A schematic diagram of the follower scraper connection of the scraping mechanism of the dispensing device for PCBA board mounting provided in this application; Figure 8 This application provides a schematic diagram of the active scraper connection of the scraping mechanism of a dispensing device for PCBA board mounting.

[0009] In the diagram: 1. Support; 2. Vessel body; 21. Vessel body; 22. Upper cover; 23. Lower cover; 24. Feed chute; 3. Power assembly; 31. Motor base; 32. Power motor; 4. Speed ​​change mechanism; 41. Support; 42. Input shaft; 43. First synchronous belt; 44. First transmission shaft; 45. Input conical pulley; 46. Transmission belt; 47. Guide block; 48. Guide shaft; 49. Second transmission shaft; 410. Output conical pulley; 411. Second synchronous belt; 412. Output ratchet; 5. Stirring assembly; 51. Stirring shaft; 52. Transmission ratchet; 53. Connecting rod; 54. Stirring blade; 6. Scraping mechanism; 61. Connecting plate; 62. Suction cup; 63. Fixed column; 64. Shaft seat; 65. Longitudinal shaft; 66. Follow-up scraper; 67. First connecting column; 68. Second connecting column; 69. Active scraper; 7. Dispensing valve. Detailed Implementation

[0010] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0011] A dispensing device for PCBA board mounting includes a bracket 1 for supporting an upper component, a vessel body 2 at the upper end of the bracket 1, a power component 3 for providing power at one side of the upper end of the vessel body 2, a speed-changing mechanism 4 for steplessly adjusting the stirring speed at the output end of the power component 3, a stirring component 5 for stirring red glue at the center of the inner cavity of the vessel body 2, a scraping mechanism 6 for scraping off residual red glue on the inner wall of the vessel body 2 at one side of the stirring component 5, and a dispensing valve 7 for uniform dispensing at the bottom end of the vessel body 2. Among them, all parts in the inner cavity of the vessel body 2 are coated with a non-stick Teflon coating, which can prevent red glue from sticking to the surface of the parts and avoid component jamming failure. The support frame 1 supports the entire equipment. The vessel body 2 is installed on top of the support frame 1. The power assembly 3 is installed on the side of the vessel body 2. The power assembly 3 outputs power to the speed change mechanism 4, which enables stepless adjustment of the stirring speed. The speed change mechanism 4 delivers the adjusted power to the stirring assembly 5 inside the vessel body 2. The stirring assembly 5 rotates and stirs the red glue inside the vessel body 2 to prevent the glue from settling and clumping. During the operation of the stirring assembly 5, the matching scraping mechanism 6 rotates simultaneously. The scraping mechanism 6 continuously scrapes the residual red glue adhering to the inner wall of the vessel body 2 to prevent the dry glue from accumulating and affecting the glue dispensing. After stirring and removing impurities, the glue is collected at the bottom of the vessel body 2 and finally discharged evenly through the dispensing valve 7 at the bottom of the vessel body 2.

[0012] Furthermore, the vessel body 2 includes a vessel body 21, which is fixedly connected to the center of the support 1. An upper cover 22 is fixedly connected to the upper end of the vessel body 21. A groove for discharging material is opened on the surface of the upper cover 22. A lower cover 23 is fixedly connected to the lower end of the vessel body 21. A material discharge groove 24 for discharging material is evenly opened at the center of the lower cover 23 near the edge. The vessel body 21 is fixed at the center of the support 1, and together with the upper cover 22 and the lower cover 23, it forms a cavity structure for holding the red glue. Material is fed into the vessel body 21 through the feeding chute in the upper cover 22, providing a feeding channel for the device's storage operations. During operation, power is transmitted via the speed-changing mechanism 4 to the stirring component 5 and the scraping mechanism 6. These two components operate synchronously inside the vessel body 21 cavity, continuously stirring the glue and scraping away residual glue adhering to the inner wall of the vessel body 21, ensuring the red glue is uniform and free of lumps. After thorough stirring, the red glue gathers at the bottom of the vessel body 2 under gravity. The lower cover 23 is fitted at the bottom of the vessel body 21, and its evenly distributed feeding chute 24 acts as a diversion and guide, breaking up accumulated glue and allowing the glue to flow smoothly, avoiding blockage problems. The mixed red glue flows out of the vessel body 2 in an orderly manner through the feeding chute 24, and is finally delivered to the dispensing valve 7 below, where it dispenses a measured amount of glue.

[0013] Furthermore, the power assembly 3 includes a motor base 31, which is fixedly connected to one side of the upper end of the vessel body 2, and a power motor 32 is fixedly connected to the upper end of the motor base 31. The motor base 31 is fixedly installed on the upper side of the vessel body 2, serving as a load-bearing and positioning element to securely mount the power motor 32. After the equipment is started, the power motor 32 outputs rotational power as the power source for the entire device. The power is transmitted to the speed change mechanism 4 at the rear via the motor output end, allowing for stepless speed adjustment. The adjusted power continues to be transmitted to the stirring assembly 5 inside the vessel body 2, driving the stirring assembly 5 to stir the adhesive. The stirring assembly 5 is simultaneously linked to the scraping mechanism 6, which scrapes off the residual adhesive adhering to the inner wall of the vessel body 2.

[0014] Furthermore, the transmission mechanism 4 includes a support 41, which is fixedly connected to one side of the upper surface of the upper cover 22. An input shaft 42 is rotatably connected to the inner cavity of the upper end of the support 41 on one side, and the input shaft 42 is fixedly connected to the output end of the power motor 32. A first synchronous belt 43 is rotatably connected to the outer surface of the input shaft 42, and a first transmission shaft 44 is rotatably connected to the inner cavity of the first synchronous belt 43 on the side away from the input shaft 42. Support 41 is fixed to the side of the top surface of the upper cover 22, providing mounting support for each transmission component. The output torque of the power motor 32 is directly connected to the input shaft 42. When the equipment is running, the power motor 32 drives the input shaft 42 to rotate inside the support 41. The input shaft 42 achieves power transmission through the first synchronous belt 43 fitted on the outside, transmitting the rotational power to the first transmission shaft 44. The power continues to be transmitted to the rear conical wheel structure via the first transmission shaft 44, and the speed is continuously adjusted in conjunction with the subsequent transmission components. The power after speed adjustment is then transmitted to the stirring assembly 5. After receiving power, the stirring assembly 5 continuously rotates and stirs the red glue inside the vessel 2, simultaneously driving the scraping mechanism 6 to clean the residual glue on the inner wall of the vessel 2, preventing the glue from drying and adhering.

[0015] Furthermore, an input cone wheel 45 is fixedly connected to one side of the first drive shaft 44, a drive belt 46 is slidably connected to the outer surface of the input cone wheel 45, a guide block 47 is slidably connected to the outer surface of the upper end of the drive belt 46, a guide shaft 48 is slidably connected to the inner cavity of the lower end of the guide block 47, and the guide shaft 48 is fixedly connected to the inner cavity of the upper end of the support 41. The first drive shaft 44 rotates synchronously with the front-end drive structure, driving the input cone pulley 45 at the end to rotate continuously. The drive belt 46, which surrounds the outside of the input cone pulley 45, follows the rotation due to friction. The guide block 47 is slidably fitted on the upper part of the drive belt 46, and the guide block 47 also slides laterally along the guide shaft 48 fixed in the inner cavity of the support 41. By moving the guide block 47, the contact position of the drive belt 46 on the input cone pulley 45 can be changed, and the effective radius of transmission can be adjusted, thereby achieving stepless speed change. The power after speed change is transmitted to the second drive shaft 49, and then drives the stirring assembly 5 inside the vessel body 2 to operate via the synchronous belt and ratchet pair. The stirring blades 54 continuously stir the red glue inside the vessel body 2 to prevent the glue from settling and separating.

[0016] Furthermore, a second drive shaft 49 is rotatably connected to the inner cavity on one side of the upper end of the support 41. An output cone wheel 410 is fixedly connected to one side of the second drive shaft 49. The output cone wheel 410 is rotatably connected to the input cone wheel 45 through the drive belt 46. A second synchronous belt 411 is rotatably connected to the outer surface of the second drive shaft 49. An output ratchet 412 is rotatably connected to one side of the second synchronous belt 411 through the shaft body. The output ratchet 412 is rotatably connected to the second synchronous belt 411 and the second drive shaft 49. After continuously variable transmission (CVT) is achieved through the input conical pulley 45, transmission belt 46, and guide assembly, power is transmitted to the second transmission shaft 49 via the output conical pulley 410. The output conical pulley 410 and input conical pulley 45 are linked by the transmission belt 46, changing the rotational speed of the second transmission shaft 49 according to the transmission radius. When the second transmission shaft 49 rotates, it drives the outer second synchronous belt 411 for synchronous transmission. The second synchronous belt 411 transmits power to the output ratchet 412, which rotates continuously. The output ratchet 412 meshes with the transmission ratchet 52 at the top of the stirring assembly 5, thereby introducing power into the stirring assembly 5 inside the vessel 2, driving the stirring shaft 51 and stirring blades 54 to rotate together, continuously stirring the red glue contained in the vessel 2, effectively preventing the red glue from settling and clumping.

[0017] Furthermore, the stirring assembly 5 includes a stirring shaft 51, which is rotatably connected to the inner cavity of the upper cover 22 and rotatably connected to the center of the upper surface of the lower cover 23. A transmission ratchet 52 is rotatably connected to the outer surface of the top end of the stirring shaft 51, and the transmission ratchet 52 and the output ratchet 412 are meshed together. Connecting rods 53 are evenly and fixedly connected to the outer surface of the stirring shaft 51, and stirring blades 54 are fixedly connected to the side of the multiple sets of connecting rods 53 away from the stirring shaft 51. The output ratchet 412 of the speed change mechanism 4 engages with the transmission ratchet 52, thereby driving the stirring shaft 51 of the stirring assembly 5 to rotate. The stirring shaft 51 is mounted on the upper and lower parts of the upper cover 22 and the lower cover 23 respectively, and its rotation is achieved by upper and lower limiters. Multiple connecting rods 53 are fixed around the stirring shaft 51, and stirring blades 54 are uniformly installed at the ends of the connecting rods 53. They follow the stirring shaft 51 to rotate in a circle, continuously stirring the red glue inside the vessel body 21 in all directions, breaking the problem of glue settling and stratification, and keeping the viscosity of the red glue uniform. During the rotation of the connecting rods 53, the outer scraping mechanism 6 rotates around the inner wall of the vessel body 2. The active scraper 69 scrapes the dried residual glue close to the vessel wall, and the follower scraper 66 slides back and forth to clean the residual glue attached to the scraper, preventing dry glue from falling and mixing into the glue liquid and causing valve blockage.

[0018] Furthermore, the scraping mechanism 6 includes a connecting plate 61, which is fixedly connected to one end of two sets of connecting rods 53 away from the stirring shaft 51. A suction cup 62 is fixedly connected to one end of the connecting plate 61 away from the connecting rods 53. A fixing column 63 is fixedly connected to one end of the suction cup 62 away from the connecting plate 61. A shaft seat 64 is fixedly connected to one end of the fixing column 63. Multiple sets of shaft seats 64 are symmetrically arranged. A longitudinal shaft 65 is fixedly connected between each set of symmetrically arranged shaft seats 64. A follower scraper 66 is slidably connected to the outer surface of the longitudinal shaft 65. Among them, the density of the follow-up scraper 66 is less than the density of the red glue; When the stirring assembly 5 is in operation, the connecting rod 53 rotates synchronously with the stirring shaft 51. The end of the connecting rod 53 is connected to the fixed column 63 through the connecting plate 61 and the suction cup 62, thereby driving the entire scraping mechanism 6 to revolve around the inner wall of the vessel body 2. Multiple sets of symmetrically arranged bearing seats 64 are mounted on the outside of the fixed column 63, and a longitudinal shaft 65 is erected between the bearing seats 64. The follower scraper 66 is slidably sleeved on the longitudinal shaft 65. During equipment operation, the fixed column 63 drives the active scraper 69 to scrape off residual red glue by adhering to the inner wall of the vessel body 21. The follower scraper 66 slides back and forth along the longitudinal shaft 65 due to the resistance of the glue, scraping off the accumulated glue adhering to the surface of the active scraper 69 in real time, preventing residual glue from accumulating and becoming ineffective. The scraped glue falls back into the interior of the vessel body 2 and participates in stirring again, ensuring that there are no dry glue lumps on the inner wall of the vessel body 2.

[0019] Furthermore, a first connecting column 67 is fixedly connected to the inner cavity of the fixed column 63, and a second connecting column 68 is fixedly connected to both ends of the first connecting column 67. An active scraper 69 is fixedly connected to the side of the second connecting column 68 away from the first connecting column 67, and the side of the active scraper 69 away from the second connecting column 68 is in close contact with the inner wall of the vessel body 21. The stirring shaft 51 drives the connecting rod 53 to rotate, transmitting power to the fixed column 63 via the connecting plate 61 and suction cup 62. A first connecting column 67 is installed inside the fixed column 63. The two ends of the first connecting column 67 are fixed with active scrapers 69 via second connecting columns 68, ensuring that the active scrapers 69 always adhere to the inner wall of the vessel body 21 and move in a circular motion with the scraping mechanism 6. During operation, the active scrapers 69, following the revolution, continuously scrape away the solidified residual adhesive adhering to the inner wall of the vessel body 2. The scraped adhesive falls into the vessel for re-mixing and stirring, preventing dried adhesive lumps from mixing into the raw materials and clogging the dispensing valve 7. The matching follower scraper 66 slides along the longitudinal axis 65, continuously wiping away residual adhesive adhering to the surface of the active scraper 69, preventing adhesive buildup and reducing the scraping effect. Under the speed regulation of the speed-changing mechanism 4, the stirring speed can be adjusted as needed to suit red adhesives of different viscosities.

[0020] Furthermore, the active scraper 69 is V-shaped on the side near the vessel body 21, and the follower scraper 66 is L-shaped on the outer surface of the vessel body 21. The follower scraper 66 is in close contact with the outer surfaces of the two sets of active scrapers 69. The V-shaped active scraper 69 revolves closely against the inner wall of the vessel body 21. The V-shaped end face can efficiently scrape off the clumps of red glue adhering to the vessel wall, and it is not easy for residual glue to remain at the corners. The L-shaped follower scraper 66 is slidably installed on the longitudinal shaft 65, with its two sides respectively attached to the outer wall of the adjacent active scraper 69. During the revolution of the active scraper 69, the glue resistance causes the follower scraper 66 to slide back and forth along the longitudinal shaft 65. Relying on the L-shaped side, it scrapes off the residual glue adhering to the surface of the active scraper 69 in real time, realizing the self-cleaning of the scraper and avoiding the accumulation of glue that affects the scraping effect.

[0021] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0022] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A dispensing device for PCBA board mounting, characterized in that, The device includes a support bracket (1) for supporting the upper part, a vessel body (2) is provided at the upper end of the support bracket (1), a power assembly (3) for providing power is provided on one side of the upper end of the vessel body (2), a speed change mechanism (4) for stepless adjustment of the stirring speed is provided at the output end of the power assembly (3), a stirring assembly (5) for stirring red glue is provided at the center of the inner cavity of the vessel body (2), a scraping mechanism (6) for scraping off the residual red glue on the inner wall of the vessel body (2) is provided on one side of the stirring assembly (5), and a glue dispensing valve (7) for uniform glue dispensing is provided at the bottom end of the vessel body (2).

2. The dispensing device for PCBA board mounting according to claim 1, characterized in that, The vessel body (2) includes a vessel body (21), which is fixedly connected to the center of the support (1). The upper end of the vessel body (21) is fixedly connected to an upper cover (22), and the surface of the upper cover (22) is provided with a groove for discharging material. The lower end of the vessel body (21) is fixedly connected to a lower cover (23), and the center of the lower cover (23) is evenly provided with a material discharge groove (24) for discharging material near the edge.

3. The dispensing device for PCBA board mounting according to claim 2, characterized in that, The power assembly (3) includes a motor base (31), which is fixedly connected to one side of the upper end of the vessel body (2), and a power motor (32) is fixedly connected to the upper end of the motor base (31).

4. The dispensing device for PCBA board mounting according to claim 3, characterized in that, The speed change mechanism (4) includes a support (41), which is fixedly connected to one side of the upper surface of the cover (22). An input shaft (42) is rotatably connected to the inner cavity of the upper end of the support (41) on one side. The input shaft (42) is fixedly connected to the output end of the power motor (32). A first synchronous belt (43) is rotatably connected to the outer surface of the input shaft (42). A first transmission shaft (44) is rotatably connected to the inner cavity of the first synchronous belt (43) on the side away from the input shaft (42).

5. The dispensing device for PCBA board mounting according to claim 4, characterized in that, An input cone wheel (45) is fixedly connected to one side of the first transmission shaft (44). A transmission belt (46) is slidably connected to the outer surface of the input cone wheel (45). A guide block (47) is slidably connected to the outer surface of the upper end of the transmission belt (46). A guide shaft (48) is slidably connected to the inner cavity of the lower end of the guide block (47). The guide shaft (48) is fixedly connected to the inner cavity of the upper end of the support (41).

6. The dispensing device for PCBA board mounting according to claim 5, characterized in that, The inner cavity on one side of the upper end of the support (41) is rotatably connected to a second drive shaft (49). An output cone wheel (410) is fixedly connected to one side of the second drive shaft (49). The output cone wheel (410) is rotatably connected to the input cone wheel (45) via a drive belt (46). A second synchronous belt (411) is rotatably connected to the outer surface of the second drive shaft (49). An output ratchet (412) is rotatably connected to one side of the second synchronous belt (411) via a shaft body. The output ratchet (412) is rotatably connected to the second synchronous belt (411) and the second drive shaft (49).

7. The dispensing device for PCBA board mounting according to claim 1, characterized in that, The stirring assembly (5) includes a stirring shaft (51), which is rotatably connected to the inner cavity of the upper cover (22) and rotatably connected to the center of the upper surface of the lower cover (23). A transmission ratchet (52) is rotatably connected to the outer surface of the top end of the stirring shaft (51), and the transmission ratchet (52) and the output ratchet (412) are meshed together. Connecting rods (53) are evenly and fixedly connected to the outer surface of the stirring shaft (51), and stirring blades (54) are fixedly connected to the side of the multiple sets of connecting rods (53) away from the stirring shaft (51).

8. The dispensing device for PCBA board mounting according to claim 7, characterized in that, The scraping mechanism (6) includes a connecting plate (61), which is fixedly connected to one end of two sets of connecting rods (53) away from the stirring shaft (51). A suction cup (62) is fixedly connected to one end of the connecting plate (61) away from the connecting rods (53). A fixing column (63) is fixedly connected to one end of the suction cup (62) away from the connecting plate (61). A shaft seat (64) is fixedly connected to one end of the fixing column (63). Multiple sets of shaft seats (64) are symmetrically arranged. A longitudinal shaft (65) is fixedly connected between the multiple sets of symmetrically arranged shaft seats (64). A follower scraper (66) is slidably connected to the outer surface of the longitudinal shaft (65).

9. A dispensing device for PCBA board mounting according to claim 8, characterized in that, The inner cavity of the fixed column (63) is fixedly connected to a first connecting column (67), and the two ends of the first connecting column (67) are respectively fixedly connected to a second connecting column (68). The side of the second connecting column (68) away from the first connecting column (67) is fixedly connected to an active scraper (69), and the side of the active scraper (69) away from the second connecting column (68) is tightly connected to the inner wall of the vessel body (21).

10. A dispensing device for PCBA board mounting according to claim 9, characterized in that, The active scraper (69) is V-shaped on the side near the vessel body (21), and the follower scraper (66) is L-shaped on one side of its outer surface. The follower scraper (66) is in close contact with the outer surfaces of the two sets of active scrapers (69).

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