High-speed centrifugal rotary valve structure for dispensing and use method

Abstract

The invention belongs to the technical field of electronic component dispensing reinforcement reliability, and particularly relates to a high-speed centrifugal rotary valve structure for dispensing and a using method.The structure comprises a high-speed rotary brushless motor, the output end of the high-speed rotary brushless motor is detachably connected with a second-stage glue injection cavity, and the upper end of the second-stage glue injection cavity communicates with a first-stage glue injection cavity; a third-stage glue injection cavity and a stepped glue dispensing head are sequentially arranged at the lower end of the glue dispensing head in a communicating manner; a second-stage glue injection cavity air outlet rod is arranged on the side wall of the second-stage glue injection cavity and communicated with the cavity, a second-stage pressurizing air pipe is arranged on the second-stage glue injection cavity air outlet rod, and a first-stage pressurizing air pipe is arranged on the third-stage glue injection cavity. A high-speed rotating brushless motor is used for driving a second-stage glue injection cavity to rotate centrifugally at a high speed, and a first-stage pressurizing air pipe and a second-stage pressurizing air pipe are arranged, so that injected glue is output to a stepped glue dispensing head in a lossless mode for glue dispensing, the design purposes that glue is discharged smoothly, and the glue discharging amount conforms to the design amount are achieved, and refined and quantitative control over the glue dispensing process is achieved. Accurate control over feeding of the high-viscosity glue to the dispensing head is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of reliability reinforcement of electronic component dispensing, and in particular relates to a high-speed centrifugal rotary valve structure for dispensing and a use method thereof. Background Art

[0002] With the continuous advancement of automation in the production process of embedded computers replacing manual operations, the dispensing and reinforcement operations of electronic components represented by common chemical materials such as polyurethane and epoxy resin have been successfully practiced on three-axis, four-axis or five-axis dispensing machines. The dispensing machine uses different valve bodies configured on it (selected according to the physical properties of different glues) to spray the specified amount of glue to the specified position to complete the dispensing according to the process design requirements. However, the commonly used dispensing valve structures on the market, such as the patent "Nozzle Adjustment Assembly and Piezoelectric Injection Valve" (patent number: CN117206129A), the patent "Articulated Injection Valve" (patent number: CN114653540B), etc., are only suitable for glue with a viscosity of less than 2500mPa.s. However, in the face of high overload and high impact conditions, the reinforcement glue represented by E51 epoxy resin (with a peak viscosity of 3000mPa.s) used, the commonly used dispensing valves on the market will have problems such as poor glue discharge and the glue discharge amount does not match the designed amount during use. Ultimately, the reason for this phenomenon is that all kinds of dispensing valves on the market use electromagnetic, high-frequency vibration, striker, and spiral extrusion to input glue into the dispensing head.

[0003] The prerequisite of the above technical ideas is that the glue must have good fluidity (based on the industry-recognized viscosity peak value of 2500mPa.s as the judgment standard) so that the glue can be fed to the dispensing head according to the designed amount under the external driving force provided by various valve bodies. Therefore, in order to solve the problem of feeding high-viscosity glue (3500mPa.s>viscosity peak>2500mPa.s) to the dispensing head, it is necessary to design a high-speed centrifugal rotary valve structure that can be applied to the dispensing machine and adapted to high-viscosity glue, while taking into account production efficiency, and can stably discharge glue according to the reinforcement amount requirements of process parameters. Summary of the invention

[0004] The purpose of the present invention is to provide a high-speed centrifugal rotary valve structure and a method of use for dispensing glue, which has solved the technical problem in the prior art that high-viscosity glue cannot be efficiently and stably supplied to the dispensing head.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: In the first aspect, the present application discloses a high-speed centrifugal rotary valve structure for dispensing glue, including a high-speed rotating brushless motor, the output end of the high-speed rotating brushless motor is detachably connected with a secondary glue injection chamber, the upper end of the secondary glue injection chamber is connected with a primary glue injection chamber, and the lower end is connected in sequence with a third-level glue injection chamber and a stepped glue dispensing head; a secondary glue injection chamber air outlet rod is provided on the side wall of the secondary glue injection chamber and is connected to the cavity, a secondary boost air pipe is provided on the secondary glue injection chamber air outlet rod, and a primary boost air pipe is provided on the third-level glue injection chamber.

[0006] Preferably, the secondary glue injection cavity is a cavity composed of an outer support guide ring, a front baffle plate and a rear baffle plate; the outer support guide ring is detachably connected to the output end of the high-speed rotating brushless motor, and a centrifugal rotating ring is provided on the inner ring of the outer support guide ring, and a front baffle plate is provided at one end of the centrifugal rotating ring; a rear baffle plate is provided at the other end; a secondary glue injection cavity air outlet rod is provided on the front baffle plate and connected to the cavity; the rear baffle plate is detachably connected to the output end of the high-speed rotating brushless motor.

[0007] Preferably, the rear baffle plate is provided with driven engaging teeth, the output end of the high-speed rotating brushless motor is fixedly connected with active engaging teeth, and the active engaging teeth and the driven engaging teeth are adapted to each other; a sealing disc is provided on the outer side of the front baffle plate, and a locking disc is provided on the outer side of the sealing disc; the air outlet rod of the secondary injection cavity is connected along the axis of the secondary injection cavity, through the locking disc, the sealing disc and the front baffle plate, and is connected to the cavity body of the secondary injection cavity.

[0008] Preferably, a one-way air pressure balancer is provided on the rear shielding plate.

[0009] Preferably, a plurality of secondary injection cavity partition plates are evenly arranged radially inside the centrifugal rotating ring. Preferably, a motor engaging guide plate is provided on one side of the high-speed rotating brushless motor close to the secondary glue injection cavity.

[0010] Preferably, a pressure sensor is provided in the stepped dispensing head, and the pressure sensor is electrically connected to the upper computer of the dispensing equipment.

[0011] In a second aspect, the present application discloses a method for using the high-speed centrifugal rotary valve structure for dispensing as described in any one of the above, comprising: S1: High-viscosity glue is injected from the primary glue injection cavity into the secondary glue injection cavity. The high-speed rotating brushless motor moves along the axial direction and connects with the secondary glue injection cavity. The high-speed rotating brushless motor starts, driving the secondary glue injection cavity to perform high-speed centrifugal motion. S2: After the secondary injection cavity performs high-speed centrifugal motion, it brakes according to the preset process requirements, and the high-speed rotating brushless motor moves in the opposite direction along the axial direction to separate from the secondary injection cavity; S3: The secondary booster air pipe is started, and oil-free compressed air or nitrogen is injected into the secondary glue injection cavity outlet rod. The secondary glue injection cavity is pressurized through the secondary glue injection cavity outlet rod, so that the high-viscosity glue is pressed into the tertiary glue injection cavity and the stepped glue dispensing head; S4: Repeat S1. At the same time, the first-stage booster air pipe is started to inject oil-free compressed air or nitrogen into the third-stage glue injection cavity, and the glue dispensing operation is performed through the stepped glue dispensing head until all the glue in the third-stage glue injection cavity and the stepped glue dispensing head is discharged.

[0012] Preferably, the secondary injection cavity is a cavity formed by an outer support guide ring, a front baffle plate and a rear baffle plate; a driven bite tooth is arranged on the rear baffle plate, and an active bite tooth is fixedly connected to the output end of the high-speed rotating brushless motor, and the active bite tooth and the driven bite tooth are adapted to each other; the method comprises: S1: High-viscosity glue is injected from the primary glue injection cavity into the secondary glue injection cavity. The high-speed rotating brushless motor moves along the axial direction, causing the active meshing teeth to mesh with the driven meshing teeth. The high-speed rotating brushless motor starts, driving the secondary glue injection cavity to perform high-speed centrifugal motion. S2: After the secondary injection cavity performs high-speed centrifugal motion, it brakes according to the preset process requirements, and the high-speed rotating brushless motor moves in the opposite direction along the axial direction, and the active meshing teeth are separated from the driven meshing teeth; S3: The secondary booster air pipe is started, and oil-free compressed air or nitrogen is injected into the secondary glue injection cavity outlet rod. The secondary glue injection cavity is pressurized through the secondary glue injection cavity outlet rod, so that the high-viscosity glue is pressed into the tertiary glue injection cavity and the stepped glue dispensing head; S4: Repeat S1. At the same time, the first-stage booster air pipe is started to inject oil-free compressed air or nitrogen into the third-stage glue injection cavity, and the glue dispensing operation is performed through the stepped glue dispensing head until all the glue in the third-stage glue injection cavity and the stepped glue dispensing head is discharged.

[0013] Preferably, a pressure sensor is provided in the stepped dispensing head, and the pressure sensor is electrically connected to the upper machine of the dispensing equipment; the method comprises: S1: High-viscosity glue is injected from the primary glue injection cavity into the secondary glue injection cavity. The high-speed rotating brushless motor moves along the axial direction and connects with the secondary glue injection cavity. The high-speed rotating brushless motor starts, driving the secondary glue injection cavity to perform high-speed centrifugal motion. S2: After the secondary injection cavity performs high-speed centrifugal motion, it brakes according to the preset process requirements, and the high-speed rotating brushless motor moves in the opposite direction along the axial direction to separate from the secondary injection cavity; S3: The secondary booster air pipe is started, and oil-free compressed air or nitrogen is injected into the secondary glue injection cavity outlet rod. The secondary glue injection cavity is pressurized through the secondary glue injection cavity outlet rod, so that the high-viscosity glue is pressed into the tertiary glue injection cavity and the stepped glue dispensing head; S4: Repeat S1. At the same time, the first-level booster air pipe starts to inject oil-free compressed air or nitrogen into the third-level glue injection cavity, and the glue dispensing operation is performed through the stepped glue dispensing head until all the glue in the third-level glue injection cavity and the stepped glue dispensing head is discharged. At this time, the value obtained by the pressure sensor reaches the preset process control value and is fed back to the upper computer of the glue dispensing equipment, and the first-level booster air pipe is closed.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Accurately control the feeding of high-viscosity glue (3500mPa.s>viscosity peak>2500mPa.s) to the dispensing head. The high-speed rotating brushless motor drives the high-speed centrifugal rotation of the secondary glue injection chamber and the setting of the primary and secondary pressurized air pipes, so that the injected glue volume is losslessly output to the stepped dispensing head for dispensing, achieving the design purpose of smooth glue discharge and glue discharge volume consistent with the designed volume, and realizing detailed quantitative control of the dispensing process.

[0015] 2. Provide a wider glue point reinforcement process window and production organization mode. The high-speed centrifugal rotation technology solution used in the present invention is not only adaptable to high-viscosity glue (3500mPa.s> viscosity peak> 2500mPa.s) from the perspective of glue properties, but also backward compatible with low-viscosity glue. It should be noted that for glue composed of multiple components and which will produce debubbling reaction after mixing, high-speed centrifugal rotation can accelerate the debubbling of the glue before it is applied to the product, thereby obtaining a better reinforcement effect; from the perspective of the realization of the automated reinforcement process, with the design idea of ​​an adjustable partition plate in the secondary glue injection cavity, the process design of the same reinforcement amount for the same components can be realized in batches, and the process design requirements of different reinforcement glue amounts for different electronic components can also be realized, that is, for the batch reinforcement process, the components on the single board product can be serially produced as a unit, or the single board product can be parallel produced as a unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 The isometric overall structure of the present invention is Figure 1 ; Figure 2 The isometric overall structure of the present invention is Figure 2 ; Figure 3 It is a radial half-section state diagram of the structure of the present invention; Figure 4 This is an axial half-section diagram of the structure of the present invention.

[0018] Among them: 1-first-level glue injection chamber; 2-high-speed rotating brushless motor; 3-external support guide ring; 4-motor bite guide plate; 5-third-level glue injection chamber; 6-stepped glue dispensing head; 601-pressure sensor; 7-first-level boost air pipe; 8-second-level glue injection chamber outlet rod; 9-locking disc; 10-sealing disc; 11-front baffle; 12-second-level boost air pipe; 13-rear baffle; 14-active bite tooth; 15-driven bite tooth; 16-one-way air pressure balancer; 17-centrifugal rotating ring; 18-second-level glue injection chamber; 19-second-level glue injection chamber partition plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings: In view of the defects of the prior art, in order to solve the problem of feeding high-viscosity glue (3500mPa.s>viscosity peak>2500mPa.s) to the glue dispensing head, it is necessary to design a valve structure that can be applied to automatic equipment such as glue dispensing machines, is suitable for high-viscosity glue, and takes into account production efficiency. The valve structure uses high-speed centrifugal rotation to squeeze glue to the glue dispensing head, and can stably discharge glue according to the reinforcement amount requirements of the process parameters. In order to achieve the above purpose, the technical solution of the present invention is: a high-speed centrifugal rotary valve structure for glue dispensing, including a high-speed rotating brushless motor 2, the output end of the high-speed rotating brushless motor 2 is detachably connected to a secondary glue injection cavity 18, the upper end of the secondary glue injection cavity 18 is connected to a primary glue injection cavity 1, and the lower end is sequentially connected to a third glue injection cavity 5 and a stepped glue dispensing head 6; the side wall of the secondary glue injection cavity 18 is provided with a secondary glue injection cavity outlet rod 8 connected to the cavity, the secondary glue injection cavity outlet rod 8 is provided with a secondary booster air pipe 12, and the third glue injection cavity 5 is provided with a primary booster air pipe 7.

[0026] Directions: S1: High-viscosity glue is injected from the primary glue injection cavity 1 into the secondary glue injection cavity 18, and the high-speed rotating brushless motor 2 moves along the axial direction and is connected to the secondary glue injection cavity 18; the high-speed rotating brushless motor 2 is started, driving the secondary glue injection cavity 18 to perform high-speed centrifugal motion; S2: After the secondary injection cavity 18 performs high-speed centrifugal motion, it brakes according to the preset process requirements, and the high-speed rotating brushless motor 2 moves in the axial direction in the opposite direction and separates from the secondary injection cavity 18; S3: The secondary booster air pipe 12 is started, and oil-free compressed air or nitrogen is injected into the secondary glue injection cavity outlet rod 8, and the secondary glue injection cavity 18 is pressurized through the secondary glue injection cavity outlet rod 8, so that the high-viscosity glue is pressed into the tertiary glue injection cavity 5 and the stepped glue dispensing head 6; S4: Repeat S1. At the same time, the first-level booster air pipe 7 starts to inject oil-free compressed air or nitrogen into the third-level glue injection cavity 5, and the glue dispensing operation is performed through the stepped glue dispensing head 6 until all the glue in the third-level glue injection cavity 5 and the stepped glue dispensing head 6 is discharged.

[0027] In some embodiments, the secondary glue injection cavity 18 is a cavity composed of an outer support guide ring 3, a front baffle plate 11 and a rear baffle plate 13; the outer support guide ring 3 is detachably connected to the output end of the high-speed rotating brushless motor 2, and a centrifugal rotating ring 17 is provided on the inner ring of the outer support guide ring 3, and a front baffle plate 11 is provided at one end of the centrifugal rotating ring 17; and a rear baffle plate 13 is provided at the other end; a secondary glue injection cavity air outlet rod 8 is provided on the front baffle plate 11 and is connected to the cavity; and the rear baffle plate 13 is detachably connected to the output end of the high-speed rotating brushless motor 2.

[0028] Directions: S1: High-viscosity glue is injected from the primary glue injection cavity 1 into the secondary glue injection cavity 18, and the high-speed rotating brushless motor 2 moves axially and is connected to the rear baffle plate 13; the high-speed rotating brushless motor 2 is started, driving the secondary glue injection cavity 18 to perform high-speed centrifugal motion; S2: After the secondary injection cavity 18 performs high-speed centrifugal motion, it brakes according to the preset process requirements, and the high-speed rotating brushless motor 2 moves in the axial direction in the reverse direction and separates from the rear baffle plate 13; S3: The secondary booster air pipe 12 is started, and oil-free compressed air or nitrogen is injected into the secondary glue injection cavity outlet rod 8, and the secondary glue injection cavity 18 is pressurized through the secondary glue injection cavity outlet rod 8, so that the high-viscosity glue is pressed into the tertiary glue injection cavity 5 and the stepped glue dispensing head 6; S4: Repeat S1. At the same time, the first-level booster air pipe 7 starts to inject oil-free compressed air or nitrogen into the third-level glue injection cavity 5, and the glue dispensing operation is performed through the stepped glue dispensing head 6 until all the glue in the third-level glue injection cavity 5 and the stepped glue dispensing head 6 is discharged.

[0029] In some embodiments, a driven meshing tooth 15 is provided on the rear baffle plate 13, and an active meshing tooth 14 is fixedly connected to the output end of the high-speed rotating brushless motor 2, and the active meshing tooth 14 and the driven meshing tooth 15 are adapted to each other; a sealing disc 10 is provided on the outer side of the front baffle plate 11, and a locking disc 9 is provided on the outer side of the sealing disc 10; the secondary injection cavity air outlet rod 8 is connected to the cavity body of the secondary injection cavity 18 through the locking disc 9, the sealing disc 10 and the front baffle plate 11 along the axis of the secondary injection cavity 18.

[0030] Directions: S1: High-viscosity glue is injected from the primary glue injection cavity 1 into the secondary glue injection cavity 18, and the high-speed rotating brushless motor 2 moves axially, so that the active meshing teeth 14 mesh with the driven meshing teeth 15; the high-speed rotating brushless motor 2 is started, driving the secondary glue injection cavity 18 to perform high-speed centrifugal motion; S2: After the secondary injection cavity 18 performs high-speed centrifugal motion, it brakes according to the preset process requirements, and the high-speed rotating brushless motor 2 moves in the axial direction in the reverse direction, and the active meshing teeth 14 and the driven meshing teeth 15 are separated; S3: The secondary booster air pipe 12 is started, and oil-free compressed air or nitrogen is injected into the secondary glue injection cavity outlet rod 8, and the secondary glue injection cavity 18 is pressurized through the secondary glue injection cavity outlet rod 8, so that the high-viscosity glue is pressed into the tertiary glue injection cavity 5 and the stepped glue dispensing head 6; S4: Repeat S1. At the same time, the first-level booster air pipe 7 starts to inject oil-free compressed air or nitrogen into the third-level glue injection cavity 5, and the glue dispensing operation is performed through the stepped glue dispensing head 6 until all the glue in the third-level glue injection cavity 5 and the stepped glue dispensing head 6 is discharged.

[0031] In some embodiments, a high-speed centrifugal rotary valve structure for dispensing glue, its main structural parts include: Figure 1 As shown, the first-level glue injection cavity 1 is the injection port of high-viscosity glue, which is welded to the outer support guide ring 3 to provide support for the entire high-speed centrifugal rotary valve structure. At the same time, it can be connected to the main equipment of the glue dispensing machine by interference fit, annular support, etc., which will not be described in detail here; the outer support guide ring 3 contains a centrifugal rotating ring 17, and the centrifugal rotating ring 17 is equipped with a front baffle plate 11 and a rear baffle plate 13, and the three together form a secondary glue injection cavity 18 with a accommodating space; a sealing disc 10 is arranged on the outside of the front baffle plate 11, and a locking disc 9 is arranged on the outside of the sealing disc 10; the secondary glue injection cavity 18 can be equipped with a secondary glue injection cavity partition plate 19 according to the specific glue amount required by the glued product, and can form glue bins of different volumes by plugging and unplugging.

[0032] like Figure 2 As shown, the rear shielding plate 13 is provided with a driven meshing tooth 15, which can be axially engaged or separated with the active meshing tooth 14 on the high-speed rotating brushless motor 2 to realize the axial rotation action of the centrifugal rotating ring 17 for acceleration or braking.

[0033] like Figure 3 Radial half-section diagram, Figure 4As shown in the axial half-section state diagram, the high-speed rotating brushless motor 2 is equipped with a motor engaging guide plate 4, which can enable the high-speed rotating brushless motor 2 to precisely move along the axial direction when engaging or separating with the centrifugal rotating ring 17. At the same time, when the motor engaging guide plate 4 moves along the axial direction of the structure, the tertiary glue injection cavity 5 and the secondary glue injection cavity 18 can be conductively divided and connected in the form of insertion and extraction; when the motor engaging guide plate 4 moves along the axial direction of the structure and is inserted into the tertiary glue injection cavity 5, the tertiary glue injection cavity 5 and the secondary glue injection cavity 18 are divided, and the two become independent spaces. The high-speed rotating brushless motor 2 is connected to the centrifugal rotating ring 17 through the active meshing teeth 14 and the driven meshing teeth 15. The high-speed rotating brushless motor 2 is started, so that the high-viscosity glue injected into the position A of the secondary glue injection cavity 18 through the primary glue injection cavity 1 is forced to perform high-speed centrifugal operation, and the rotation angle servo control of the high-speed rotating brushless motor 2 is used. The position A rotates to the position B after a certain angle, and the high-speed rotating brushless motor 2 brakes, and the centrifugal rotating ring 17 is controlled to stop rotating through the connection between the active meshing teeth 14 and the driven meshing teeth 15. Driven by the high-speed rotating brushless motor 2, the motor meshing guide plate 4 moves along the axial direction and is pulled out of the tertiary glue injection cavity 5. The tertiary glue injection cavity 5 and the secondary glue injection cavity 18 are integrated in space, and the active meshing teeth 14 and the driven meshing teeth 15 are disengaged. At this time, the secondary boost air pipe 12 is started, and oil-free compressed air or nitrogen is injected into the secondary glue injection cavity outlet rod 8, and oil-free compressed air or nitrogen is sprayed into the secondary glue injection cavity 18 through the array air outlet holes set at the front end of the secondary glue injection cavity outlet rod 8. For glue with a viscosity in the range of 3500mPa.s>viscosity peak>2500mPa.s, a pressure of 0.8Mpa-1.0Mpa is recommended. At this point, the glue at position B in the secondary glue injection cavity 18 is purged to the tertiary glue injection cavity 5, and remains in the stepped dispensing head 6 under the action of the purging gas (but it cannot guarantee that all the glue in the tertiary glue injection cavity 5 is emptied), and at the same time, the glue at position B is emptied.

[0034] After that, the high-viscosity glue is injected into the A position of the secondary glue injection cavity 18 through the primary glue injection cavity 1 for the second time; the motor engaging guide plate 4 is driven by the high-speed rotating brushless motor 2 to move axially and insert into the tertiary glue injection cavity 5, the active engaging teeth 14 are connected with the driven engaging teeth 15, and the high-speed rotating brushless motor 2 is started, so that the high-viscosity glue is forced to perform high-speed centrifugal movement again.

[0035] At the same time, Figure 4As shown in the axial half-section state diagram, the first-level boost air pipe 7 is started to inject oil-free compressed air or nitrogen into the third-level glue injection cavity 5. For glue with a viscosity in the range of 3500mPa.s>viscosity peak>2500mPa.s, a recommended pressure of 0.5Mpa-0.7Mpa is recommended. At the same time, the motion mechanism of the glue dispensing machine drives the high-speed centrifugal rotary valve structure described in the present invention to the process position of the electronic components that need to be glued and reinforced, and the glue dispensing operation is performed through the stepped glue dispensing head 6; the power source provided by the first-level boost air pipe 7 continues to apply pressure until all the glue in the third-level glue injection cavity 5 and the stepped glue dispensing head 6 is discharged. At this time, the value obtained by the pressure sensor 601 in the space formed by the third-level glue injection cavity 5 and the stepped glue dispensing head 6 reaches the process control value, and is fed back to the glue dispensing equipment host computer, and the first-level boost air pipe 7 is closed.

[0036] At this point, a high-speed centrifugal rotary valve structure for dispensing completes a functional cycle.

[0037] In some embodiments, a method for using a high-speed centrifugal rotary valve structure for dispensing includes: Step 1: If Figure 1 Isometric total Figure 1 , Figure 3 As shown in the radial half-section state diagram, high-viscosity glue is injected from the primary glue injection cavity 1 into the A position cavity in the secondary glue injection cavity 18; the high-speed rotating brushless motor 2 drives the motor bite guide plate 4 and the active bite teeth 14 thereon to move toward the centrifugal rotating ring 17 along the axial direction until the motor bite guide plate 4 is inserted into the tertiary glue injection cavity 5, and the active bite teeth 14 and the driven bite teeth 15 are engaged. The high-speed rotating brushless motor 2 is started (the speed, acceleration, and rotation angle are determined by the process parameters), and the centrifugal rotating ring 17 is driven to perform high-speed centrifugal motion through the coaxial active bite teeth 14 and driven bite teeth 15 thereon.

[0038] Step 2: The high-speed rotating brushless motor 2 is braked according to the process requirements, and the centrifugal rotating ring 17 is braked through the coaxial active meshing teeth 14 and the driven meshing teeth 15. In the centrifugal rotating ring 17, the glue injection position A is rotated to position B through high-speed centrifugal rotation.

[0039] Step 3: The high-speed rotating brushless motor 2 drives the motor meshing guide plate 4 and the active meshing teeth 14 thereon to move in the opposite direction along the axial direction, so that the motor meshing guide plate 4 is pulled out of the three-stage glue injection cavity 5, and the active meshing teeth 14 are separated from the driven meshing teeth 15.

[0040] Step 4: Start the secondary boost air pipe 12 (the flow rate, pressure and purge time are determined by the process parameters), inject oil-free compressed air or nitrogen into the secondary glue injection cavity outlet rod 8, and pressurize the cavity at position B in the secondary glue injection cavity 18 through the array of air outlet holes set at the front end of the secondary glue injection cavity outlet rod 8, so that the high-viscosity glue contained therein is pressed into the tertiary glue injection cavity 5 and the stepped glue dispensing head 6.

[0041] Step 5: Same as step 1, inject glue again.

[0042] Step six: In step five, the motor engagement guide plate 4 is inserted into the three-stage glue injection cavity 5 again, and the first-stage boost air pipe 7 is started (the flow rate, pressure, and purge time are determined by the process parameters), and oil-free compressed air or nitrogen is injected into the three-stage glue injection cavity 5. At the same time, the motion mechanism of the glue dispensing machine drives the high-speed centrifugal rotary valve structure described in the present invention to the process position of the electronic components that need to be glued and reinforced, and the glue dispensing operation is performed through the stepped glue dispensing head 6 until all the glue in the three-stage glue injection cavity 5 and the stepped glue dispensing head 6 is discharged. At this time, the value obtained by the pressure sensor 601 reaches the process control value, and is fed back to the glue dispensing equipment host computer, and the first-stage boost air pipe 7 is closed.

[0043] Step 5 and step 6 are performed simultaneously.

[0044] At this point, the first end face of the target electronic component has been reinforced, and the process will be repeated in the order of step 2, step 3, step 4, step 5 (step 1), and step 6.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-speed centrifugal rotary valve structure for dispensing, characterized in that: The invention comprises a high-speed rotating brushless motor (2), wherein the output end of the high-speed rotating brushless motor (2) is detachably connected to a secondary glue injection cavity (18), the upper end of the secondary glue injection cavity (18) is connected to a primary glue injection cavity (1), and the lower end is connected in sequence to a tertiary glue injection cavity (5) and a stepped glue dispensing head (6); a secondary glue injection cavity air outlet rod (8) is provided on the side wall of the secondary glue injection cavity (18) and is connected to the cavity, a secondary pressurized air pipe (12) is provided on the secondary glue injection cavity air outlet rod (8), and a primary pressurized air pipe (7) is provided on the tertiary glue injection cavity (5).

2. A high-speed centrifugal rotary valve structure for dispensing according to claim 1, characterized in that: The secondary glue injection cavity (18) is a cavity body formed by an outer support guide ring (3), a front baffle plate (11) and a rear baffle plate (13); the outer support guide ring (3) is detachably connected to the output end of the high-speed rotating brushless motor (2); a centrifugal rotating ring (17) is arranged on the inner ring of the outer support guide ring (3); one end of the centrifugal rotating ring (17) is provided with a front baffle plate (11); the other end is provided with a rear baffle plate (13); a secondary glue injection cavity air outlet rod (8) is arranged on the front baffle plate (11) and is connected to the cavity body; and the rear baffle plate (13) is detachably connected to the output end of the high-speed rotating brushless motor (2).

3. A high-speed centrifugal rotary valve structure for dispensing according to claim 2, characterized in that: The rear baffle plate (13) is provided with a driven meshing tooth (15), and the output end of the high-speed rotating brushless motor (2) is fixedly connected with an active meshing tooth (14), and the active meshing tooth (14) and the driven meshing tooth (15) are matched with each other; a sealing faceplate (10) is provided on the outside of the front baffle plate (11), and a locking faceplate (9) is provided on the outside of the sealing faceplate (10); and a secondary glue injection cavity outlet rod (8) is connected to the cavity body of the secondary glue injection cavity (18) along the axis of the secondary glue injection cavity (18), through the locking faceplate (9), the sealing faceplate (10) and the front baffle plate (11).

4. A high-speed centrifugal rotary valve structure for dispensing according to claim 2, characterized in that: A one-way air pressure balancer (16) is provided on the rear baffle plate (13).

5. A high-speed centrifugal rotary valve structure for dispensing according to claim 2, characterized in that: A plurality of secondary glue injection cavity partition plates (19) are evenly arranged radially inside the centrifugal rotating ring (17).

6. A high-speed centrifugal rotary valve structure for dispensing according to claim 1, characterized in that: A motor engaging guide plate (4) is provided on one side of the high-speed rotating brushless motor (2) close to the secondary glue injection cavity (18).

7. A high-speed centrifugal rotary valve structure for dispensing according to claim 1, characterized in that: A pressure sensor (601) is arranged in the stepped dispensing head (6), and the pressure sensor (601) is electrically connected to the upper machine of the dispensing equipment.

8. A method for using the high-speed centrifugal rotary valve structure for dispensing according to any one of claims 1 to 7, characterized in that: include: S1: High-viscosity glue is injected from the primary glue injection cavity (1) into the secondary glue injection cavity (18), and the high-speed rotating brushless motor (2) moves along the axial direction and is connected to the secondary glue injection cavity (18); the high-speed rotating brushless motor (2) is started, driving the secondary glue injection cavity (18) to perform high-speed centrifugal movement; S2: After the secondary injection cavity (18) performs high-speed centrifugal motion, it brakes according to preset process requirements, and the high-speed rotating brushless motor (2) moves in the axial direction in the reverse direction to separate from the secondary injection cavity (18); S3: The secondary booster air pipe (12) is started to inject oil-free compressed air or nitrogen into the secondary glue injection cavity outlet rod (8), and the secondary glue injection cavity (18) is pressurized through the secondary glue injection cavity outlet rod (8), so that the high-viscosity glue is pressed into the tertiary glue injection cavity (5) and the stepped glue dispensing head (6); S4: Repeat S1. At the same time, the first-stage booster air pipe (7) is started to inject oil-free compressed air or nitrogen into the third-stage glue injection cavity (5), and the glue dispensing operation is performed through the stepped glue dispensing head (6) until all the glue in the third-stage glue injection cavity (5) and the stepped glue dispensing head (6) is discharged.

9. The method for using a high-speed centrifugal rotary valve structure for dispensing according to claim 8, characterized in that: The secondary glue injection cavity (18) is a cavity body formed by an outer support guide ring (3), a front baffle plate (11) and a rear baffle plate (13); a driven meshing tooth (15) is provided on the rear baffle plate (13); an active meshing tooth (14) is fixedly connected to the output end of the high-speed rotating brushless motor (2); the active meshing tooth (14) and the driven meshing tooth (15) are matched; the method comprises: S1: High-viscosity glue is injected from the primary glue injection cavity (1) into the secondary glue injection cavity (18), and the high-speed rotating brushless motor (2) moves axially, so that the active meshing teeth (14) and the driven meshing teeth (15) are meshed; the high-speed rotating brushless motor (2) is started, driving the secondary glue injection cavity (18) to perform high-speed centrifugal motion; S2: After the secondary injection cavity (18) performs high-speed centrifugal motion, it brakes according to the preset process requirements, and the high-speed rotating brushless motor (2) moves in the axial direction in the reverse direction, and the active meshing teeth (14) and the driven meshing teeth (15) are separated; S3: The secondary booster air pipe (12) is started to inject oil-free compressed air or nitrogen into the secondary glue injection cavity outlet rod (8), and the secondary glue injection cavity (18) is pressurized through the secondary glue injection cavity outlet rod (8), so that the high-viscosity glue is pressed into the tertiary glue injection cavity (5) and the stepped glue dispensing head (6); S4: Repeat S1. At the same time, the first-stage booster air pipe (7) is started to inject oil-free compressed air or nitrogen into the third-stage glue injection cavity (5), and the glue dispensing operation is performed through the stepped glue dispensing head (6) until all the glue in the third-stage glue injection cavity (5) and the stepped glue dispensing head (6) is discharged.

10. The method for using a high-speed centrifugal rotary valve structure for dispensing according to claim 8, characterized in that: A pressure sensor (601) is provided in the stepped dispensing head (6), and the pressure sensor (601) is electrically connected to a dispensing device upper machine; the method comprises: S1: High-viscosity glue is injected from the primary glue injection cavity (1) into the secondary glue injection cavity (18), and the high-speed rotating brushless motor (2) moves along the axial direction and is connected to the secondary glue injection cavity (18); the high-speed rotating brushless motor (2) is started, driving the secondary glue injection cavity (18) to perform high-speed centrifugal movement; S2: After the secondary injection cavity (18) performs high-speed centrifugal motion, it brakes according to preset process requirements, and the high-speed rotating brushless motor (2) moves in the axial direction in the reverse direction to separate from the secondary injection cavity (18); S3: The secondary booster air pipe (12) is started to inject oil-free compressed air or nitrogen into the secondary glue injection cavity outlet rod (8), and the secondary glue injection cavity (18) is pressurized through the secondary glue injection cavity outlet rod (8), so that the high-viscosity glue is pressed into the tertiary glue injection cavity (5) and the stepped glue dispensing head (6); S4: Repeat S1. At the same time, the first-stage booster air pipe (7) is started to inject oil-free compressed air or nitrogen into the third-stage glue injection cavity (5), and the glue dispensing operation is performed through the stepped glue dispensing head (6) until all the glue in the third-stage glue injection cavity (5) and the stepped glue dispensing head (6) is discharged. At this time, the value obtained by the pressure sensor (601) reaches the preset process control value and is fed back to the glue dispensing equipment host computer, and the first-stage booster air pipe (7) is closed.

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