Quick-release high-reliability AB glue dispensing device

Abstract

The application discloses a quick-disassembly high-reliability AB glue dispensing device, which comprises a piezoelectric valve, an AB glue push-injection component, a glue mixing pipe, a quick-disassembly glue dispensing head and a glue guide seat. The upper end of the glue mixing pipe is communicated with the bottom of the AB glue push-injection component, and the lower end is inserted into the quick-disassembly glue dispensing head. The glue guide seat is rotatably arranged at the bottom of the piezoelectric valve, and a plug-in hole is formed in the glue guide seat. The quick-disassembly glue dispensing head is clamped in the plug-in hole and abuts against the lower bottom surface of the piezoelectric valve, and the glue outlet end of the lower part of the quick-disassembly glue dispensing head can be opened / closed under the control of the piezoelectric valve. Effect: the quick-disassembly glue dispensing head and the glue guide seat only have a plug-in abutting relationship, when the glue guide seat is rotated downward, the quick-disassembly glue dispensing head can be quickly taken out upward from the plug-in hole, so that the quick-disassembly glue dispensing head is not difficult to disassemble, the glue dispensing valve is not provided with a penetrating channel of a striker, but is provided with a necking, when the glue closing striker moves up and down, the glue closing striker may rub against the inner wall of the necking, but the inner surface area is small, so that the adhesive liquid that may exist is very little, the glue closing striker is not easily stuck due to the large resistance caused by solidification, and the application is reliable.

Description

Technical Field

[0001] This invention relates to the field of dispensing equipment technology, and in particular to a quick-release, high-reliability AB glue dispensing device. Background Technology

[0002] Dispensing, also known as glue application, is the precise and quantitative application of fluids such as glue, thermally conductive adhesive, sealant, and silver paste to designated locations on a workpiece. This achieves bonding, sealing, waterproofing, thermal conductivity, insulation protection, and filling and reinforcement, and is widely used in the production of electronics, 3C products, semiconductors, new energy batteries, automotive electronics, and medical devices.

[0003] An existing dispensing device with a dispensing head includes a dispensing guide seat and a dispensing valve fixed in a locking hole on the dispensing guide seat. The dispensing valve has a vertical dispensing channel and a needle insertion channel located above the dispensing channel. A nozzle and a locking nut are installed at its bottom. The nozzle is fixed by a locking nut fixed to the bottom of the dispensing guide seat so that its upper part abuts against the bottom of the dispensing channel to achieve communication. The dispensing valve has a dispensing guide channel on its side wall or top that extends into the upper part of the dispensing channel. A sealing ring is installed above the needle insertion channel. The sealing pin used is inserted into the corresponding sealing ring and the pin insertion channel from top to bottom with an interference fit. Its lower end extends into the corresponding nozzle. The sealing pin can be controlled to open / close the corresponding nozzle by means of a matching piezoelectric valve. In order to maintain the smooth guidance of the sealing pin's up and down movement, the pin insertion channel is generally set to have a vertical height of not less than 6.0mm.

[0004] The inventor of this patent discovered certain defects and shortcomings in the dispensing head with the structure described above during its use.

[0005] Specifically, on the one hand, when it is necessary to disassemble the corresponding dispensing valve, it is necessary to first remove the locking nut and the corresponding nozzle from the bottom of the corresponding dispensing guide seat, and then pull the dispensing valve body upward from the locking hole of the corresponding dispensing guide seat. Conversely, it is also necessary to perform two operations: first, insert the dispensing valve body downward from the locking hole of the corresponding dispensing guide seat, and then place the corresponding nozzle at the bottom of the corresponding dispensing guide seat and fix it by the corresponding locking nut fixed to the bottom of the corresponding dispensing guide seat, so as to achieve the connection between the upper part and the bottom of the corresponding dispensing channel. This makes the dispensing valve disassembly and assembly time-consuming and laborious. On the other hand, when the dispensing pin moves up and down, its outer wall rubs against the inner wall of the corresponding pin penetration channel, which makes the inner wall of the corresponding pin penetration channel easily scratched. Because the inner wall of the corresponding pin penetration channel has a large inner surface area, it is easy for more adhesive to adhere after being scratched. After the adhesive hardens, it will block the corresponding pin penetration channel, causing the dispensing pin to get stuck and making it difficult to be driven to move up and down, resulting in poor reliability of the entire dispensing head.

[0006] In response, the inventor of this patent, drawing on experience, deeply considered the problems encountered in his work, reviewed a large amount of scientific research data and literature, and gradually conceived and designed this application through a novelty search to solve the relevant technical problems. Summary of the Invention

[0007] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the object of this invention is to provide a quick-release, high-reliability AB glue dispensing device.

[0008] To achieve one of the above objectives, a quick-release, high-reliability AB glue dispensing device according to an embodiment of the present invention includes a piezoelectric valve, an AB glue injection component, a mixing tube, a quick-release dispensing head, and a glue guide seat. The AB glue dispensing component is located on the upper part of the piezoelectric valve and is used to push AB glue downwards according to a set ratio; the upper end of the mixing tube is connected to the glue outlet end at the bottom of the AB glue dispensing component, and the lower end is inserted into the upper part of the quick-release dispensing head. The adhesive guide seat is rotatably disposed at the bottom of the piezoelectric valve, and has an insertion hole that passes through its upper and lower end faces; the quick-release dispensing head is inserted into the insertion hole and abuts against the bottom surface of the piezoelectric valve, and its lower dispensing end can be opened / closed under the control of the piezoelectric valve. When the adhesive guide seat is rotated downwards to move the quick-release dispensing head away from the piezoelectric valve, the quick-release dispensing head can be quickly removed upwards from the insertion hole.

[0009] In addition, the quick-release high-reliability AB glue dispensing device according to the above embodiments of the present invention may also have the following additional technical features: According to one embodiment of the present invention, the piezoelectric valve has a rotating shaft seat on one side of its bottom and an elastic latch on the other side; The first end of the guide seat is provided with a rotating shaft that is rotatably fixed to the rotating shaft seat, and the second end is provided with a locking hook that is adapted to be engaged by the elastic lock. When the elastic latch is manipulated to move away from the locking hook, the second end of the adhesive guide seat can rotate downward, causing the quick-release dispensing head to move away from the piezoelectric valve.

[0010] According to one embodiment of the present invention, the quick-release dispensing head includes a dispensing valve, a needle guide sleeve, a sealing ring, a nozzle, and a dispensing needle; The dispensing valve has a mounting groove facing downwards at its upper end; a limiting ring protrudes upwards from the bottom surface of the mounting groove, and a dispensing channel is formed downwards; the top of the dispensing channel is formed into a constriction; a guide channel communicating with the dispensing channel is formed on the outer wall of the dispensing valve; the lower end of the mixing tube is inserted into the guide channel. The lower end of the firing pin guide sleeve is fixed outside the limiting ring; the sealing ring is installed inside the limiting ring; The nozzle is located at the bottom of the dispensing valve and communicates with the dispensing channel; the dispensing pin is tightly inserted from top to bottom into the pin guide sleeve, the sealing ring and the constriction, with its lower end extending into the nozzle, and the top of the dispensing pin extending upward from the bottom surface of the piezoelectric valve and abutting against the lower end of the valve core inside it. The dispensing pin can move up and down under the control of the valve core of the piezoelectric valve to open / close the nozzle accordingly.

[0011] According to one embodiment of the present invention, the height of the sealing ring is slightly higher than the height of the limiting ring; the thickness of the constriction is D, where D = 0.5mm-2.0mm.

[0012] According to one embodiment of the present invention, the quick-release dispensing head further includes a push spring; The top of the sealing striker has an outwardly protruding stop; the push spring is sleeved on the upper part of the sealing striker, with its upper end abutting against the lower bottom surface of the outwardly protruding stop and its lower end abutting against the upper part of the striker guide sleeve.

[0013] According to one embodiment of the present invention, the quick-release dispensing head further includes a dispensing valve fixing sleeve and a locking nut; The dispensing valve retaining sleeve tightly fits around the dispensing valve; the nozzle bottom has a slender nozzle with a downwardly extending outer diameter smaller than its outer diameter. The locking nut has a central hole at its bottom suitable for the elongated nozzle to pass through downwards, and the locking nut is threaded onto the lower part of the dispensing valve fixing sleeve to lock the nozzle upwards to the bottom of the dispensing valve.

[0014] According to one embodiment of the present invention, the upper end face of the dispensing valve is inclined downward and has a guide channel communicating with the upper part of the dispensing channel; The dispensing valve has a maintenance hole on its side wall that connects to the dispensing channel, and a removable sealing plug is inserted into the maintenance hole.

[0015] According to one embodiment of the present invention, the inner diameter of the nozzle gradually decreases from top to bottom, and the inner diameter of the lower end of the nozzle is equal to the inner diameter of the upper part of the elongated nozzle head.

[0016] According to one embodiment of the present invention, the lower end of the sealing pin forms a hemispherical sealing protrusion; When the valve core of the piezoelectric valve controls the sealing pin to move downwards by a preset stroke, the hemispherical sealing protrusion abuts tightly against the inner wall of the nozzle.

[0017] According to one embodiment of the present invention, it further includes a first adhesive cooling component and a second adhesive cooling component; The first adhesive cooling component is detachably wrapped around the mixing tube to cool the mixing tube; the second adhesive cooling component is detachably wrapped around the adhesive guide seat to cool the quick-release dispensing head.

[0018] The beneficial effects of this invention are: The quick-release dispensing head described in this application has only an insert-fit relationship with the adhesive guide seat. When the adhesive guide seat is rotated downwards, the quick-release dispensing head can be quickly removed from the insert hole upwards, making it easy to install and remove. The dispensing valve does not have a channel for the ejector pin, but instead uses the constriction. When the dispensing ejector pin moves up and down, even if it rubs against the inner wall of the constriction, its small inner surface area means that there is very little adhesive residue. It is not easy for the dispensing ejector pin to get stuck due to the large resistance formed after curing, making this application reliable in use.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the quick-release, high-reliability AB glue dispensing device of the present invention. Figure 1 ; Figure 2 This is an breakdown of the quick-release, high-reliability AB glue dispensing device of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the overall structure of the quick-release, high-reliability AB glue dispensing device of the present invention. Figure 2 ; Figure 4 This is an breakdown of the quick-release, high-reliability AB glue dispensing device of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the overall structure of the dispensing head in an embodiment of the present invention. Figure 1 ; Figure 6 In this embodiment of the invention, the quick-release dispensing head is disassembled. Figure 1 ; Figure 7 This is a schematic diagram of the overall structure of the quick-release dispensing head in an embodiment of the present invention. Figure 2 ; Figure 8 In this embodiment of the invention, the quick-release dispensing head is disassembled. Figure 2 ; Figure 9 This is a longitudinal sectional view of the quick-release dispensing head in an embodiment of the present invention; Figure 10 yes Figure 9 Enlarged view of E in the middle; Figure label: 1000 Quick-release, high-reliability AB glue dispensing device; Piezoelectric valve 10; Rotary bearing 101; Elastic latch 102; AB glue injection component 20; 30mm mixing tube; Quick-release dispensing head 40; Dispensing valve 401; Card slot 4011; Limiting ring 4012; Glue discharge channel 4013; 4014 with reduced neck; Adhesive channel 4015; Maintenance hole 4016; Sealing plug 4017; 402 firing pin guide sleeve; Limiting groove 4021; Drain hole 4022; 403 sealing ring; Nozzle 404; Slender nozzle 4041; 405 sealing pin; 4051 is a stop for outward protrusion; Hemispherical sealing convex 4052; Push spring 406; 407 dispensing valve retaining sleeve; Locking nut 408; 4081 socket; 50mm adhesive guide seat; Insertion hole 501; Shaft 502; Lock hook 503; First adhesive cooling component 60; Second adhesive cooling component 70; The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," and "radial," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The quick-release, high-reliability AB glue dispensing device 1000 of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] Reference Figures 1 to 4 As shown; the quick-release high-reliability AB glue dispensing device 1000 provided according to the embodiment of the present invention includes a piezoelectric valve 10, an AB glue injection component 20, a mixing tube 30, a quick-release dispensing head 40 and a glue guide seat 50. The AB glue injection component 20 is located on the upper part of the piezoelectric valve 10 and is used to push AB glue downward according to a set ratio. The upper end of the mixing tube 30 is connected to the glue outlet end at the bottom of the AB glue injection component 20 and is used to guide the AB glue of the set ratio downward and mix it. The lower end of the mixing tube 30 is inserted into the upper part of the quick-release dispensing head 40 so as to guide the mixed AB glue of the set ratio downward into the quick-release dispensing head 40. Furthermore, the adhesive guide seat 50 is rotatably disposed at the bottom of the piezoelectric valve 10, and has an insertion hole 501 extending through its upper and lower end faces; the quick-release dispensing head 40 is fitted into the insertion hole 501 from top to bottom and abuts against the bottom surface of the piezoelectric valve 10, and its lower dispensing end can be opened / closed under the control of the piezoelectric valve 10. When the adhesive guide seat 50 is rotated downwards so that the quick-release dispensing head 40 is away from the piezoelectric valve 10, the quick-release dispensing head 40 can be quickly removed upwards from the insertion hole 501.

[0029] Based on the above, it is clear that in specific implementation, this application is mainly used as a quick-release, high-reliability AB glue dispensing device 1000.

[0030] Specifically, when applying this application, assemble the application according to the structure described above, and use the AB glue pushing component 20 to push AB glue downwards at a set ratio. The AB glue pushed downwards at the set ratio can enter the mixing tube 30 for mixing. Then, the mixed AB glue at the set ratio can be guided downwards through the mixing tube 30 to the quick-release dispensing head 40. When the piezoelectric valve 10 controls the lower dispensing end of the quick-release dispensing head 40 to open, the quick-release dispensing head 40 can be used to dispense glue at the preset dispensing position on the surface of the product that needs to be glued. Conversely, when the piezoelectric valve 10 controls the lower dispensing end of the quick-release dispensing head 40 to close, the use of this application can be interrupted. In this way, this application can be used easily.

[0031] Clearly, the use of this application as described above will have the following technical effects: The quick-release dispensing head 40 is the main dispensing structure of this application. After each use, it needs to be disassembled, cleaned, maintained, or replaced. This application improves upon existing technology by having a guide seat 50 rotatably mounted at the bottom of the piezoelectric valve 10, with an insertion hole 501 extending through its upper and lower ends. The quick-release dispensing head 40 is fitted into the insertion hole 501 from top to bottom and abuts against the lower surface of the piezoelectric valve 10. Its lower dispensing end can be opened / closed under the control of the piezoelectric valve 10. When the guide seat 50 is rotated downwards, causing the quick-release dispensing head 40 to move away from the piezoelectric valve 10, the quick-release dispensing head 40... The detachable dispensing head 40 can be quickly removed upwards from the insertion hole 501. This design ensures that the quick-release dispensing head 40 and the guide seat 50 have only an insertion-fit relationship, without any locking connectors. This allows the quick-release dispensing head 40 to be quickly removed upwards from the insertion hole 501 when the guide seat 50 is rotated downwards to move the quick-release dispensing head 40 away from the piezoelectric valve 10. This facilitates disassembly, cleaning, maintenance, or replacement, making the quick-release dispensing head 40 extremely convenient to use. Its easy and effortless assembly and disassembly result in high efficiency and save time and effort.

[0032] Furthermore, through the above-mentioned optimized design, the whole constituted by this application is highly practical and has a good effect in use.

[0033] Preferably, in this technical solution, compared with Figure 2 and Figure 4As shown, according to one embodiment of the present invention, the piezoelectric valve 10 has a rotating shaft seat 101 on one side of its bottom and an elastic latch 102 on the other side; The guide seat 50 has a first end with a rotating shaft 502 that is rotatably fixed to the rotating shaft seat 101, and a second end with an upwardly mounted locking hook 503 that is adapted to engage with the elastic lock 102. When the elastic latch 102 is manipulated to move away from the locking hook 503, the second end of the adhesive guide seat 50 can rotate downward, causing the quick-release dispensing head 40 to move away from the piezoelectric valve 10.

[0034] Therefore, it can be understood that this application adopts a method in which the rotating shaft 502 is rotatably installed on the rotating shaft seat 101 so that the first end of the adhesive guide seat 50 is rotatably connected to the bottom side of the piezoelectric valve 10, and the elastic buckle 102 is set to engage with the locking hook 503 to achieve the connection and fixation of the adhesive guide seat 50. When the elastic buckle 102 is manipulated, such as pressing the elastic locking hook 503 to make it move away from the locking hook 503, the second end of the adhesive guide seat 50 can be driven to rotate downward relative to the bottom surface of the adhesive guide seat 50, so that the quick-release dispensing head 40 moves away from the piezoelectric valve 10. At this time, the quick-release dispensing head 40 can be quickly removed upward from the insertion hole 501.

[0035] Therefore, through the optimized design of the above structure, the quick-release dispensing head 40 described in this application can indeed be quickly disassembled and assembled.

[0036] Furthermore, as a preferred option, compared with Figures 5 to 10 As shown, according to an embodiment of the present invention, the quick-release dispensing head 40 includes a dispensing valve 401, a needle guide sleeve 402, a sealing ring 403, a nozzle 404, and a dispensing needle 405. The dispensing valve 401 has a downward-facing mounting groove 4011 on its upper end; a limiting ring 4012 protrudes upward from the center of the bottom surface of the mounting groove 4011, and a discharge channel 4013 extending downward to the bottom of the dispensing valve 401 is formed at the center of the bottom surface of the mounting groove 4011; the discharge channel 4013 is located directly below the limiting ring 4012, its inner diameter is smaller than the inner diameter of the limiting ring 4012, and the top of the discharge channel 4013 is formed as a constriction 4014 with an inner diameter smaller than its inner diameter; the outer wall of the dispensing valve 401 has a downward-sloping guide channel 4015 that connects to the upper part of the discharge channel 4013; the lower end of the mixing tube 30 is inserted into the upper end of the guide channel 4015. Furthermore, the firing pin guide sleeve 402 is removably fixed in the mounting groove 4011, and its lower end is fixed outside the limiting ring 4012; the sealing ring 403 is fitted inside the limiting ring 4012 so that it is located above the constriction 4014. Meanwhile, the nozzle 404 is detachably disposed at the bottom of the dispensing valve 401 and vertically connected to the bottom of the dispensing channel 4013; the dispensing pin 405 is tightly inserted from top to bottom into the pin guide sleeve 402, the sealing ring 403 and the constriction 4014, with its lower end extending into the nozzle 404; the outer diameter of the dispensing pin 405 is obviously smaller than the inner diameter of the dispensing channel 4013, and the gap between them can form a glue storage chamber; the top of the dispensing pin 405 extends upward from the bottom surface of the piezoelectric valve 10 and abuts against the lower end of the valve core inside it; the dispensing pin 405 can move up and down under the control of the valve core of the piezoelectric valve 10 to open / close the nozzle 404 accordingly.

[0037] Based on the above, it is clear that in the specific implementation of this application, the structure of the quick-release dispensing head 40 has been improved and optimized compared with the prior art.

[0038] Specifically, when applying this application, the quick-release dispensing head 40 of this application is assembled according to the structure described above. This application has a dispensing channel 4013 extending downward to the bottom of the dispensing valve 401 at the center of the bottom surface of the mounting groove 4011. The inner diameter of the dispensing channel 4013 is smaller than the inner diameter of the limiting ring 4012, and the top of the dispensing channel 4013 is formed as a constriction 4014 with an inner diameter smaller than its inner diameter. The constriction 4014 is used as a sealing element. The dispensing pin 405 is tightly inserted into the constriction 4014, and its lower end passes through the dispensing channel 4013 and extends into the nozzle 404.

[0039] When using this application, the upper end of the glue-closing ejector pin 405 is externally connected to the valve core of the matching piezoelectric valve 10, and the mixing tube 30 is externally connected to the upper end of the glue guiding channel 4015. The AB glue injection component 20 is externally connected through the mixing tube 30. The AB glue in the externally connected AB glue injection component 20 can be mixed through the mixing tube 30 and flow to the glue guiding channel 4015, and then guided to the glue discharge channel 4013. When the valve core of the piezoelectric valve 10 controls the glue-closing ejector pin 405 to move upward by a preset stroke to open the nozzle 404, the AB glue mixture in the glue discharge channel 4013 can flow out through the nozzle 404 and flow to the preset glue dispensing position on the surface of the product that needs to be glued.

[0040] Conversely, when the valve core of the piezoelectric valve 10 controls the dispensing pin 405 to move downwards by a preset stroke to close the nozzle 404, the nozzle 404 can be blocked to interrupt the dispensing operation. By repeating this operation, the application can be used intermittently to dispense glue at preset dispensing positions on the surface of the product that needs to be dispensed.

[0041] Obviously, the use of the quick-release dispensing head 40 described in this application will have the following technical effects: On the one hand, compared with the prior art, the dispensing valve 401 of this application does not have a corresponding needle penetration channel, but instead uses a narrowed opening 4014 with a smaller upper and lower thickness. This means that even if the dispensing needle 405 rubs against the inner wall of the narrowed opening 4014 during its up-and-down movement, the small inner surface area means that there is very little adhesive residue after scratching. This makes it less likely that the dispensing needle 405 will get stuck due to excessive adhesive residue forming a large resistance after curing. In other words, this optimized design greatly reduces the possibility of the dispensing needle 405 getting stuck, making the quick-release dispensing head 40 of this application more reliable.

[0042] On the other hand, the adhesive guide channel 4015 is arranged at an angle, which can effectively reduce the flow resistance of the adhesive during the feeding process, avoid the adhesive from accumulating and stagnating at feeding corners and other positions, reduce the solidification and clumping phenomenon caused by long-term retention of adhesive, and ensure that the adhesive can flow smoothly into the adhesive discharge channel 4013, maintaining the continuity and stability of adhesive supply.

[0043] Furthermore, the lower end of the firing pin guide sleeve 402 described in this application is fitted outside the limiting ring 4012 that protrudes upward from the center of the inner bottom surface of the mounting groove 4011, forming a nested structure. The limiting ring 4012 can be used to fix and radially position the firing pin guide sleeve 402, preventing the firing pin guide sleeve 402 from radially shifting, and better ensuring the coaxiality of the internal parts in the vertical direction. The sealing ring 403 is fitted inside the limiting ring 4012, so that the sealing ring 403 is positioned above the top constriction 4014 of the glue discharge channel 4013. The height of the sealing ring 403 is set slightly higher than the height of the limiting ring 4012. This size setting ensures that the sealing ring 403 can obtain a suitable pre-compression amount after assembly. This can both seal the outer periphery of the glue-closing striker 405 and prevent glue from flowing upward into the interior of the striker guide sleeve 402, and prevent the friction of the glue-closing striker 405 from increasing sharply due to excessive compression, thus minimizing the risk of the glue-closing striker 405 getting stuck during lifting and lowering.

[0044] Furthermore, the nozzle 404 adopts a detachable assembly structure, which allows for the quick replacement of nozzles 404 with different orifice sizes according to the actual dispensing process requirements on site. It is compatible with various working conditions such as dispensing large amounts of glue and dispensing small glue dots, making the quick-release dispensing head 40 described in this application highly adaptable to the entire equipment process.

[0045] Furthermore, through the above-mentioned optimized design, the entire assembly consisting of the quick-release dispensing head 40 described in this application is highly practical and has a good performance.

[0046] Preferably, in this technical solution, according to an embodiment of the present invention, the height of the sealing ring 403 is slightly higher than the height of the limiting ring 4012; the upper and lower thicknesses of the constriction 4014 are D, where D = 0.5mm-2.0mm, and the upper and lower thicknesses D of the constriction 4014 are preferably set to 1.0mm.

[0047] In this regard, it is clear that, compared with the traditional firing pin penetration channel described in the background art having a height of not less than 6.0mm, this application replaces it with the constriction 4014, and the axial thickness of the constriction 4014 along the vertical direction is greatly reduced, and its inner surface area can be significantly reduced. The glue-closing strike pin 405 is tightly inserted from top to bottom into the strike pin guide sleeve 402, the sealing ring 403, and the constriction 4014. The lower end of the glue-closing strike pin 405 passes through the glue discharge channel 4013 and extends into the nozzle 404. During the up-and-down movement of the glue-closing strike pin 405, it only comes into frictional contact with the inner wall of the constriction 4014, which has a limited thickness. Even if the inner wall of the constriction 4014 is scratched, the amount of glue that can adhere is very limited due to the small contact area. This greatly reduces the risk of glue accumulating and jamming the glue-closing strike pin 405 after curing, thus improving the overall reliability of the dispensing head. At the same time, the glue-closing strike pin 405 does not come into contact with a large section of the inner wall of the glue discharge channel 4013 during its movement. The inner wall of the glue discharge channel 4013 is not easily scratched, reducing the phenomenon of glue curing on the inner wall of the glue discharge channel 4013, which extends the overall service life of the dispensing valve 401.

[0048] Furthermore, in specific implementation, we will continue to refer to... Figures 5 to 10 As shown, according to one embodiment of the present invention, the quick-release dispensing head 40 further includes a push spring 406; The top of the sealing striker 405 is provided with a stop protrusion 4051; the push spring 406 is sleeved on the upper part of the sealing striker 405, with its upper end abutting against the lower bottom surface of the stop protrusion 4051 and its lower end abutting against the upper part of the striker guide sleeve 402.

[0049] In this regard, it is clear that the push spring 406 can provide downward buffering force for the sealing pin 405. When the supporting lifting component, such as the piezoelectric valve 10, drives the sealing pin 405 to move downward by a preset stroke to close the nozzle 404, the push spring 406 is compressed, which provides buffering force so that the lower end of the sealing pin 405 does not make direct and rigid contact with the inner wall of the nozzle 404 in an instant, thus preventing the inner wall from being impacted by an instantaneous downward impact force. This can greatly extend the service life of the nozzle 404.

[0050] Conversely, when the valve core of the piezoelectric valve 10 is de-driven downward, the push spring 406 can automatically extend and reset, pushing the dispensing pin 405 upwards to help the lower end of the dispensing pin 405 move away from the nozzle 404, thereby quickly opening the nozzle 404 and improving the dispensing response speed.

[0051] Furthermore, through the above-mentioned optimized design, the overall performance of this application can be further improved.

[0052] Furthermore, in this technical solution, it is still in comparison with... Figures 5 to 10 As shown, according to one embodiment of the present invention, the upper part of the firing pin guide sleeve 402 is cut downward to form a limiting groove 4021, and the lower end of the push spring 406 is engaged in the limiting groove 4021.

[0053] Obviously, the limiting groove 4021 provided in this application can achieve circumferential and radial constraint positioning of the lower end of the push spring 406. During operation, the lower end of the push spring 406 is restricted within the limiting groove 4021, which can effectively prevent the push spring 406 from radially shifting, deviating, or even falling out during repeated compression and rebound reciprocating motion. This ensures that the push spring 406 always maintains a coaxial posture and acts on the stop protrusion 4051 at the top of the sealing pin 405, making the spring force output direction of the push spring 406 stable and less prone to lateral force. This eliminates the risk of uneven wear on the sealing pin 405 caused by lateral force, ensures smooth lifting and lowering movement of the sealing pin 405, avoids jamming, and extends the service life of the push spring 406 itself.

[0054] Furthermore, in a specific implementation, according to an embodiment of the present invention, the lower end of the firing pin guide sleeve 402 is preferably threaded onto the outside of the limiting ring 4012, and the upper outer wall of the firing pin guide sleeve 402 is provided with a venting hole 4022 that extends through to its inner wall.

[0055] Therefore, it is clear that, on the one hand, the threaded assembly structure is easy to install and disassemble; the installation and removal of the impact pin guide sleeve 402 can be completed simply by screwing, which is convenient for operators to quickly disassemble and facilitate the inspection, maintenance and replacement of consumable parts such as the internal sealing ring 403 without disassembling the dispensing valve 401 body, thus reducing the difficulty of maintenance. On the other hand, by opening the vent hole 4022 to connect the internal cavity of the impact pin guide sleeve 402, the air accumulated inside the cavity can be discharged outward through the vent hole 4022 during the assembly, debugging and dispensing operation of the whole machine, preventing the internal air from accumulating and forming air blockage, avoiding problems such as intermittent dispensing, fluctuating dispensing volume, and air bubbles mixed into the dispensing liquid caused by trapped air, and can better ensure a stable and consistent dispensing volume.

[0056] Furthermore, in specific implementation, it is still necessary to refer to... Figures 5 to 10 As shown, according to an embodiment of the present invention, the quick-release dispensing head 40 further includes a dispensing valve fixing sleeve 407 and a locking nut 408; The dispensing valve fixing sleeve 407 tightly wraps around the dispensing valve 401; the nozzle 404 has a slender nozzle 4041 extending downward at the bottom with an outer diameter smaller than its outer diameter; Furthermore, the locking nut 408 has a sleeve hole 4081 at the bottom center suitable for the elongated nozzle 4041 to pass through downwards, and the locking nut 408 is threaded onto the lower part of the dispensing valve fixing sleeve 407 to lock the nozzle 404 to the bottom of the dispensing valve 401 upwards.

[0057] Therefore, the dispensing valve fixing sleeve 407 can provide external protection for the dispensing valve 401, and at the same time provide a threaded mounting base for the locking nut 408. The nozzle 404 can be quickly disassembled and assembled by means of the threaded locking of the locking nut 408. The locking force is uniform and stable, making the operation of replacing the nozzle 404 on the work site simple and efficient. Moreover, the slender nozzle 4041 can be inserted into narrow working spaces to complete dispensing, adapting to the dispensing needs of component gaps and deep cavities, and expanding the applicable scenarios of the entire device of this application.

[0058] Preferably, in this technical solution, according to an embodiment of the present invention, the upper end face of the dispensing valve 401 is inclined downward to have a guide channel 4015 communicating with the upper part of the dispensing channel 4013; Based on this, in this application, according to an embodiment of the present invention, the dispensing valve 401 has a maintenance hole 4016 on its side wall that communicates with the dispensing channel 4013, and a sealing plug 4017 is removably inserted into the maintenance hole 4016.

[0059] Therefore, under normal working conditions, the sealing plug 4017 blocks the maintenance hole 4016, ensuring stable internal pressure in the adhesive discharge channel 4013. When adhesive solidification causes blockage inside the adhesive discharge channel 4013 and / or the adhesive guiding channel 4015, the sealing plug 4017 can be removed. The adhesive discharge channel 4013 and / or the adhesive guiding channel 4015 can be flushed and cleaned directly through the maintenance hole 4016 without completely disassembling the entire dispensing head. This simplifies maintenance and improves troubleshooting efficiency. After cleaning, the sealing plug 4017 can be reinstalled to restore the sealing working state of the adhesive discharge channel 4013 and the adhesive guiding channel 4015.

[0060] Furthermore, in a specific implementation, according to an embodiment of the present invention, the inner diameter of the nozzle 404 gradually decreases from top to bottom, and the lower inner diameter of the nozzle 404 is equal to the upper inner diameter of the elongated nozzle 4041.

[0061] Because the inner diameter of the nozzle 404 gradually decreases from top to bottom, a smooth conical flow channel can be formed. Simultaneously, the lower inner diameter of the nozzle 404 is equal to the upper inner diameter of the elongated nozzle 4041, with no steps or abrupt gaps at their junction. When the adhesive flows through the nozzle 404 to the elongated nozzle 4041, the flow channel cross-section transitions smoothly, preventing localized eddies, dead zones, and adhesive stagnation. This reduces adhesive shear heating, significantly lowering the probability of adhesive buildup and solidification at the junction. The adhesive flows smoothly, resulting in a regular dispensing pattern, effectively improving defects such as stringing, tailing, and size discrepancies in dispensing dots, thus enhancing the dispensing quality.

[0062] Furthermore, preferably, in this technical solution, compared with Figure 9 As shown, according to one embodiment of the present invention, the lower end of the sealing pin 405 forms a hemispherical sealing protrusion 4052; When the valve core of the piezoelectric valve 10 controls the sealing pin 405 to move downwards by a preset stroke, the hemispherical sealing protrusion 4052 abuts tightly against the inner wall of the nozzle 404.

[0063] In this regard, it is clear that the surface of the hemispherical sealing protrusion 4052 provided in this application can form a hemispherical curved surface, which enables it to have good self-adaptive compensation capability, can offset the slight coaxiality deviation caused by part processing and assembly, ensure sufficient fit of the sealing part, reliable sealing effect, can quickly cut off the glue passage, and reduce glue dripping and leakage problems after glue closing; after the glue closing pin 405 is lifted upward, the hemispherical sealing protrusion 4052 disengages from the inner wall of the nozzle 404, and the glue can flow out smoothly. The hemispherical shape can also reduce glue residue at the lower end of the glue closing pin 405, and reduce the risk of failure caused by residual glue curing.

[0064] It is still the preferred option, in this technical solution, compared with Figure 1 and Figure 3 As shown, according to one embodiment of the present invention, this application further includes a first adhesive cooling component 60 and a second adhesive cooling component 70; The first adhesive cooling component 60 is detachably wrapped around the mixing tube 30 to cool the mixing tube 30; the second adhesive cooling component 70 is detachably wrapped around the adhesive guide seat 50 to cool the quick-release dispensing head 40.

[0065] Therefore, by setting the first adhesive cooling component 60 and the second adhesive cooling component 70, the AB adhesive mixture flowing through the mixing pipe 30 and the guide seat 50 after mixing can be cooled in stages, removing the heat released by the mixing reaction of the AB adhesive mixture, slowing down the curing rate of the AB adhesive mixture, and minimizing the possibility of premature gelation and agglomeration of the AB adhesive mixture in the guide channel 4015 and discharge channel 4013 of the mixing pipe 30 and the guide seat 50, which would cause adhesive blockage. This allows for better stability of the viscosity of the AB adhesive mixture, ensuring stable dispensing volume, reducing defects such as stringing and adhesive breakage, and improving the consistency of dispensing and molding.

[0066] In specific implementation, both the first adhesive cooling component 60 and the second adhesive cooling component 70 can be detachable and enclosed structures to facilitate disassembly and maintenance, and will not hinder the disassembly, cleaning, maintenance, or replacement of the quick-release dispensing head 40. Both the first adhesive cooling component 60 and the second adhesive cooling component 70 exchange heat from the outside, and the cooling medium does not come into direct contact with the AB adhesive mixture, which can better avoid contaminating the AB adhesive mixture, while reducing the accumulation of residual adhesive inside each flow channel, which can extend the service life of structural components such as the mixing tube 30 and the quick-release dispensing head 40, and reduce the cost of consumables.

[0067] Furthermore, through the above-mentioned optimized design, the overall performance of this application can be further improved.

[0068] It should be added that, in specific implementation, the quick-release high-reliability AB glue dispensing device 1000 provided according to the embodiments of the present invention can preferably be a cooling component with a cooling water tank and a cooling plate, which is a common and mature technology and product, and is widely used in the dispensing field. Therefore, its specific structure, etc., will not be described in detail here.

[0069] Furthermore, in specific implementation, the quick-release high-reliability AB glue dispensing device 1000 provided by the embodiments of the present invention uses the piezoelectric valve 10, which is a common structural component in this technical field. The overall structure formed by the AB glue injection component 20 and the mixing tube 30 can be referred to the utility model patent "Displacement Sensor Built-in Glue Injection Valve Device and Dispensing Equipment Having It" disclosed by the patent applicant in the prior application with patent number "202520219229.8". Both are existing mature technologies and products, so their specific structures will not be described in detail here.

[0070] Other embodiments, etc., will not be described here either.

[0071] In summary, the quick-release high-reliability AB glue dispensing device 1000 provided in this application, in specific implementation, the quick-release dispensing head 40 is the main dispensing structural component of this application. After each use, it needs to be disassembled, cleaned, maintained, or replaced. Therefore, this application improves upon existing technology by adopting a method where "the glue guide seat 50 is rotatably disposed at the bottom of the piezoelectric valve 10, and has an insertion hole 501 extending through its upper and lower end faces; the quick-release dispensing head 40 is fitted from top to bottom into the insertion hole 501 and abuts against the lower bottom surface of the piezoelectric valve 10, and its lower glue outlet end can be opened / closed under the control of the piezoelectric valve 10; when the glue guide seat 50 is rotated downwards, the quick-release dispensing head 40..." When the dispensing head 40 is away from the piezoelectric valve 10, the quick-release dispensing head 40 can be quickly removed upwards from the insertion hole 501. This structural principle ensures that the quick-release dispensing head 40 and the guide seat 50 only have an insertion-fit relationship, without any locking connectors between them. This allows the quick-release dispensing head 40 to be quickly removed upwards from the insertion hole 501 when the guide seat 50 is rotated downwards to move the quick-release dispensing head 40 away from the piezoelectric valve 10. This facilitates disassembly, cleaning, maintenance, or replacement, making the quick-release dispensing head 40 extremely convenient to use. Its easy and effortless disassembly and assembly result in high efficiency and save time and effort.

[0072] Furthermore, compared to the prior art, the dispensing valve 401 of this application does not have a corresponding needle penetration channel, but instead uses a narrowed opening 4014 with a smaller upper and lower thickness. This means that even if the dispensing needle 405 rubs against the inner wall of the narrowed opening 4014 during its up-and-down movement, its smaller inner surface area means that even if it is scratched, there will be very little adhesive residue. This prevents the dispensing needle 405 from getting stuck due to excessive adhesive residue forming significant resistance after curing. In other words, this optimized design greatly reduces the possibility of the dispensing needle 405 getting stuck, making the quick-release dispensing head 40 of this application more reliable.

[0073] Furthermore, the lower end of the firing pin guide sleeve 402 described in this application is fitted outside the limiting ring 4012 that protrudes upward from the middle of the bottom surface of the mounting groove 4011. The limiting ring 4012 can be used to fix and radially position the firing pin guide sleeve 402, preventing the firing pin guide sleeve 402 from radially shifting and ensuring the coaxiality of the internal parts in the vertical direction. The sealing ring 403 is fitted inside the limiting ring 4012, so that the sealing ring 403 is positioned above the top constriction 4014 of the glue discharge channel 4013. The height of the sealing ring 403 is set slightly higher than the height of the limiting ring 4012. This size setting ensures that the sealing ring 403 can obtain a suitable pre-compression amount after assembly. This can both seal the outer periphery of the glue-closing striker 405 and prevent glue from flowing upward into the interior of the striker guide sleeve 402, and prevent the friction of the glue-closing striker 405 from increasing sharply due to excessive compression, thus minimizing the risk of the glue-closing striker 405 getting stuck during lifting and lowering.

[0074] Furthermore, the quick-release, high-reliability AB glue dispensing device 1000 provided in this application is indeed highly practical and has excellent performance, which makes this application inherently valuable for market promotion and will certainly be very popular and widely adopted.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0076] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A quick-release, high-reliability AB glue dispensing device, characterized in that, Includes piezoelectric valve, AB glue dispensing component, mixing tube, quick-release dispensing head and glue guide seat; The AB glue dispensing component is located on the upper part of the piezoelectric valve and is used to push AB glue downwards according to a set ratio; the upper end of the mixing tube is connected to the glue outlet end at the bottom of the AB glue dispensing component, and the lower end is inserted into the upper part of the quick-release dispensing head. The adhesive guide seat is rotatably disposed at the bottom of the piezoelectric valve, and has an insertion hole that passes through its upper and lower end faces; the quick-release dispensing head is inserted into the insertion hole and abuts against the bottom surface of the piezoelectric valve, and its lower dispensing end can be opened / closed under the control of the piezoelectric valve. When the adhesive guide seat is rotated downwards to move the quick-release dispensing head away from the piezoelectric valve, the quick-release dispensing head can be removed upwards from the insertion hole.

2. The quick-release, high-reliability AB glue dispensing device according to claim 1, characterized in that, The piezoelectric valve has a rotating shaft seat on one side of its bottom and an elastic lock on the other side; The first end of the guide seat is provided with a rotating shaft that is rotatably fixed to the rotating shaft seat, and the second end is provided with a locking hook that is adapted to be engaged by the elastic lock. When the elastic latch is manipulated to move away from the locking hook, the second end of the adhesive guide seat can rotate downward, causing the quick-release dispensing head to move away from the piezoelectric valve.

3. The quick-release, high-reliability AB glue dispensing device according to claim 1, characterized in that, The quick-release dispensing head includes a dispensing valve, a guide sleeve for the ejector pin, a sealing ring, a nozzle, and a dispensing ejector pin. The dispensing valve has a mounting groove facing downwards at its upper end; a limiting ring protrudes upwards from the bottom surface of the mounting groove, and a dispensing channel is formed downwards; the top of the dispensing channel is formed into a constriction; a guide channel communicating with the dispensing channel is formed on the outer wall of the dispensing valve; the lower end of the mixing tube is inserted into the guide channel. The lower end of the firing pin guide sleeve is fixed outside the limiting ring; the sealing ring is installed inside the limiting ring; The nozzle is located at the bottom of the dispensing valve and communicates with the dispensing channel; the dispensing pin is tightly inserted from top to bottom into the pin guide sleeve, the sealing ring and the constriction, with its lower end extending into the nozzle, and the top of the dispensing pin extending upward from the bottom surface of the piezoelectric valve and abutting against the lower end of the valve core inside it. The dispensing pin can move up and down under the control of the valve core of the piezoelectric valve to open / close the nozzle accordingly.

4. The quick-release, high-reliability AB glue dispensing device according to claim 3, characterized in that, The height of the sealing ring is slightly higher than the height of the limiting ring; the thickness of the constriction is D, where D = 0.5.0 mm - 2.0 mm.

5. The quick-release, high-reliability AB glue dispensing device according to claim 3, characterized in that, The quick-release dispensing head also includes a push spring; The top of the sealing striker has an outwardly protruding stop; the push spring is sleeved on the upper part of the sealing striker, with its upper end abutting against the lower bottom surface of the outwardly protruding stop and its lower end abutting against the upper part of the striker guide sleeve.

6. The quick-release, high-reliability AB glue dispensing device according to claim 3, characterized in that, The quick-release dispensing head also includes a dispensing valve fixing sleeve and a locking nut; The dispensing valve retaining sleeve tightly fits around the dispensing valve; the nozzle bottom has a slender nozzle with a downwardly extending outer diameter smaller than its outer diameter. The locking nut has a central hole at its bottom suitable for the elongated nozzle to pass through downwards, and the locking nut is threaded onto the lower part of the dispensing valve fixing sleeve to lock the nozzle upwards to the bottom of the dispensing valve.

7. The quick-release, high-reliability AB glue dispensing device according to claim 3, characterized in that, The upper end face of the dispensing valve is inclined downward and has a guide channel that connects to the upper part of the dispensing channel. The dispensing valve has a maintenance hole on its side wall that connects to the dispensing channel, and a removable sealing plug is inserted into the maintenance hole.

8. The quick-release, high-reliability AB glue dispensing device according to claim 3, characterized in that, The inner diameter of the nozzle gradually decreases from top to bottom, and the inner diameter of the lower end of the nozzle is equal to the inner diameter of the upper part of the slender nozzle head.

9. The quick-release, high-reliability AB glue dispensing device according to claim 3, characterized in that, The lower end of the sealing pin forms a hemispherical sealing protrusion; When the valve core of the piezoelectric valve controls the sealing pin to move downwards by a preset stroke, the hemispherical sealing protrusion abuts tightly against the inner wall of the nozzle.

10. The quick-release, high-reliability AB glue dispensing device according to any one of claims 1-9, characterized in that, It also includes a first adhesive cooling component and a second adhesive cooling component; The first adhesive cooling component is detachably wrapped around the mixing tube to cool the mixing tube; the second adhesive cooling component is detachably wrapped around the adhesive guide seat to cool the quick-release dispensing head.

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