Dispensing head with quick-release structure and dispensing valve device with dispensing head

Abstract

The utility model discloses a dispensing head with a quick release structure and a dispensing valve device with the dispensing head. The dispensing head comprises a piezoelectric valve, a mounting platform and a valve body, the mounting platform is arranged below the piezoelectric valve, one end of the mounting platform is rotationally connected with one side of the bottom surface of the piezoelectric valve, the other end of the mounting platform is detachably connected with the piezoelectric valve, a mounting hole is formed in the mounting platform, a limiting groove is formed in the upper surface of the mounting platform and located on one side of the mounting hole, and the limiting groove is communicated with the mounting hole. The valve body is installed in the installation hole, the output end of the piezoelectric valve is pressed at the upper end of the valve body and used for controlling opening and closing of an internal channel of the valve body, the lower end of the valve body is connected with the dispensing head, the dispensing head is located below the installation platform and fixed to the lower end of the valve body through the fixing nut, and a limiting part transversely extends from one side of the valve body and is arranged in the limiting groove. When the installation platform is in a horizontal state, the bottom face of the piezoelectric valve is closed at the upper end of the limiting groove, and the diameter of the fixing nut and the diameter of the valve body are both smaller than that of the installation hole. According to the utility model, the dispensing head and the valve body can be detached simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of dispensing valves, specifically to a quick-release dispensing head and a dispensing valve device having the same. Background Technology

[0002] In the fields of automated production and precision manufacturing, dispensing technology, as a key process, is widely used in various industries such as electronics, semiconductors, optoelectronics, and medical devices to achieve the coating and bonding of tiny and precise liquid materials (such as adhesives, inks, and coatings). During the dispensing process, the dispensing head and valve body are core components, and their performance and ease of operation directly affect production efficiency and product quality.

[0003] Traditional dispensing head and valve body designs present significant operational complexity issues when facing maintenance, replacement, or cleaning needs. Specifically, existing dispensing head structures are typically tightly mounted to the valve body using a retaining nut to ensure stability and sealing during high-speed, high-pressure dispensing operations. However, due to the relatively large diameter of the retaining nut, when valve body maintenance is required (such as replacing worn parts or cleaning internal residues), operators must first manually loosen and completely remove the retaining nut, then detach the dispensing head from the valve body, and finally pull the entire valve body from the mounting platform to complete the disassembly. This process is time-consuming and labor-intensive, increases downtime, and reduces the overall efficiency of the production line.

[0004] Therefore, it is necessary to make further improvements to the existing technology. Summary of the Invention

[0005] This invention aims to at least partially solve one of the technical problems in the related art. Therefore, one objective of this invention is to provide a quick-release dispensing head.

[0006] Another objective of this invention is to provide a dispensing valve device.

[0007] To achieve the above objectives, on the one hand, a quick-release dispensing head according to an embodiment of the present utility model includes a piezoelectric valve, a mounting platform, and a valve body.

[0008] The mounting platform is located below the piezoelectric valve. One end of the mounting platform is rotatably connected to one side of the bottom surface of the piezoelectric valve, and the other end is detachably connected to the side surface of the piezoelectric valve. The mounting platform is provided with a mounting hole, and a limiting groove is provided on the upper surface of the mounting platform on one side of the mounting hole. The limiting groove is connected to the mounting hole.

[0009] The valve body is installed in the mounting hole. The output end of the piezoelectric valve presses against the upper end of the valve body to control the opening and closing of the internal channel of the valve body. A dispensing head is connected to the lower end of the valve body. The dispensing head is located below the mounting platform and is fixed to the lower end of the valve body by a fixing nut. A limiting part extends laterally on one side of the valve body and is located in the limiting groove.

[0010] When the mounting platform is in a horizontal state, the bottom surface of the piezoelectric valve is closed at the upper end of the limiting groove, and the diameter of the fixing nut and the diameter of the valve body are both smaller than the diameter of the mounting hole.

[0011] According to the quick-release dispensing head provided in this utility model embodiment, by cooperating the limiting groove set on the mounting platform with the limiting part on the valve body, combined with the closed design of the bottom surface of the piezoelectric valve and the upper end of the limiting groove, the valve body is fixed on the mounting platform in a very simple and reliable manner. The fixing nut is directly connected to the valve body and its diameter is smaller than the diameter of the mounting hole. In the disassembly process, the mounting platform only needs to be rotated away from the bottom surface of the piezoelectric valve to disassemble the dispensing head and the valve body at the same time. The disassembly method is simple, quick and easy, saving time and effort.

[0012] In addition, a quick-release dispensing head according to the above embodiments of the present invention may also have the following additional technical features:

[0013] According to one embodiment of the present invention, the upper surface of the other end of the installation platform is provided with two first connecting parts, which are arranged opposite to each other, and each of the two first connecting parts is provided with a fixing groove on the side near the piezoelectric valve.

[0014] The piezoelectric valve has a second connecting part on its side, which is located behind the first connecting part. A horizontally extending through groove is opened on the front side of the second connecting part, and a fixing rod is provided in the through groove.

[0015] When the installation platform is rotated to a horizontal position, the through slot and the fixing slot are opposite each other, and the fixing rod can be moved to lock into the two fixing slots to fix the installation platform in a horizontal position.

[0016] According to one embodiment of the present invention, the valve body includes a housing, an elastic seat, and a striking pin.

[0017] The housing is provided with a glue channel, and the lower end of the glue channel is provided with a glue outlet, which is connected to the glue dispensing head. The upper end of the housing is formed as an open opening, and the upper end of the fixing nut is connected to the outer surface of the lower end of the housing.

[0018] The elastic seat is located at the upper end of the adhesive channel.

[0019] The firing pin is located in the glue passage, and its upper part passes through the elastic seat. It can move up and down in the height direction. The upper end of the firing pin is provided with a tail seat. The lower surface of the tail seat abuts against the elastic seat so that the elastic seat applies an upward elastic force to the tail seat. The output end of the piezoelectric valve abuts against the upper surface of the tail seat to control the raising and lowering of the firing pin.

[0020] According to one embodiment of the present invention, the elastic seat includes a mounting base and a spring.

[0021] The upper end of the inner wall of the glue channel has a stepped surface, the mounting base is installed on the stepped surface, the mounting base has an annular protrusion in the middle, and the upper part of the firing pin passes through the annular protrusion.

[0022] The spring is sleeved on the outer surface of the annular protrusion, with its upper end abutting against the tailstock and its lower end abutting against the mounting base.

[0023] According to one embodiment of the present invention, the dispensing head includes a connecting part and a needle head.

[0024] The connecting part is trumpet-shaped, and a groove is formed on the bottom surface of the housing. The upper end of the connecting part is inserted into the groove.

[0025] The needle head is integrally formed at the lower end of the connecting part, and a dispensing channel is formed inside the needle head. One end of the dispensing channel extends through the lower end of the needle head, and the other end extends through the connecting part.

[0026] The lower end of the firing pin extends into the connecting portion to close or open the upper end of the dispensing channel.

[0027] According to one embodiment of the present invention, the fixing nut is sleeved on the outside of the connecting part, the middle part of the fixing nut is provided with a through hole, the needle head is inserted into the through hole, and the upper end of the fixing nut is threadedly connected to the outer surface of the housing to fix the connecting part in the groove.

[0028] According to one embodiment of the present invention, the limiting part is provided with a glue inlet channel, one end of which is connected to the glue passage channel, and the other end extends to the upper surface of the limiting part.

[0029] According to one embodiment of the present invention, the adhesive channel includes an installation section and an adhesive passage section. The installation section is located on the upper part of the housing, the elastic seat is located within the installation section, and the adhesive passage section is located on the lower part of the housing and communicates with the installation section.

[0030] According to one embodiment of the present invention, the diameter of the adhesive section is smaller than the diameter of the mounting section.

[0031] On the other hand, a dispensing valve device according to an embodiment of the present invention includes a quick-release dispensing head, a back plate, a glue tube, a first condensation assembly, and a second condensation assembly as described above.

[0032] The backplate is adapted to be mounted on the machine base, and the piezoelectric valve is mounted on the backplate.

[0033] The hose is located on one side of the piezoelectric valve, and the lower end of the hose is connected to the other end of the glue inlet channel through a pipe to deliver glue into the glue inlet channel.

[0034] The first condensation component is located on the side of the piezoelectric valve and covers the pipe to control the temperature of the glue in the hose.

[0035] The second condensation component is located on the bottom surface of the mounting platform and covers the outer surface of the dispensing head to control the temperature of the adhesive inside the dispensing head.

[0036] Additional aspects and advantages of this 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

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of the quick-release dispensing head in an embodiment of this utility model;

[0039] Figure 2 This is a cross-sectional view of the overall structure of the quick-release dispensing head in an embodiment of this utility model;

[0040] Figure 3 This is a diagram showing the changing states of the quick-release structure dispensing head in an embodiment of this utility model;

[0041] Figure 4 This is a schematic diagram of the connection between the mounting platform and the valve body in an embodiment of this utility model;

[0042] Figure 5 This is an embodiment of the present utility model. Figure 4 A cross-sectional schematic diagram;

[0043] Figure 6 This is a schematic diagram of the overall structure of the installation platform in an embodiment of this utility model;

[0044] Figure 7 This is an exploded view of the valve body in an embodiment of this utility model;

[0045] Figure 8 This is a schematic cross-sectional view of the valve body in an embodiment of this utility model;

[0046] Figure 9 This is a schematic cross-sectional view of the shell in an embodiment of this utility model;

[0047] Figure 10 This is a schematic cross-sectional view of the dispensing head in an embodiment of this utility model;

[0048] Figure 11 This is a schematic diagram of the overall structure of the dispensing valve device in an embodiment of this utility model.

[0049] Icon labels:

[0050] Piezoelectric valve 10;

[0051] Second connecting part 11;

[0052] Through slot 111;

[0053] Fixed rod 12;

[0054] Installation platform 20;

[0055] Mounting hole 21;

[0056] Limiting groove 22;

[0057] 23-inch retaining nut;

[0058] Through hole 231;

[0059] Limiting part 24;

[0060] Glue inlet channel 241;

[0061] First connecting part 25;

[0062] Fixing slot 251;

[0063] Valve body 30;

[0064] Casing 31;

[0065] Adhesive channel 311;

[0066] Installation section 3111;

[0067] Glue section 3112;

[0068] Step surface 312;

[0069] Groove portion 313;

[0070] 32 flexible seat;

[0071] Mounting bracket 321;

[0072] Annular protrusion 322;

[0073] Spring component 323;

[0074] Firing pin 33;

[0075] Tail seat 331;

[0076] Dispensing head 40;

[0077] Connecting part 41;

[0078] Needle head 42;

[0079] Dispensing channel 421;

[0080] Back panel 50;

[0081] 60mm hose;

[0082] First condensation component 70;

[0083] Second condenser assembly 80.

[0084] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0085] The embodiments of this utility model 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 this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0086] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0087] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0088] In this utility model, 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 utility model according to the specific circumstances.

[0089] 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.

[0090] The following describes in detail, with reference to the accompanying drawings, an embodiment of the present invention: a quick-release dispensing head 40 and a dispensing valve device having thereon.

[0091] Reference Figures 1 to 10 As shown, a quick-release dispensing head according to an embodiment of the present invention includes a piezoelectric valve 10, a mounting platform 20, and a valve body 30.

[0092] The mounting platform 20 is located below the piezoelectric valve 10. One end of the mounting platform 20 is rotatably connected to one side of the bottom surface of the piezoelectric valve 10, and the other end is detachably connected to the side surface of the piezoelectric valve 10. The mounting platform 20 is provided with a mounting hole 21, and a limiting groove 22 is provided on the upper surface of the mounting platform 20 on one side of the mounting hole 21. The limiting groove 22 is connected to the mounting hole 21.

[0093] The valve body 30 is installed in the mounting hole 21. The output end of the piezoelectric valve 10 presses against the upper end of the valve body 30 to control the opening and closing of the internal channel of the valve body 30. A dispensing head 40 is connected to the lower end of the valve body 30. The dispensing head 40 is located below the mounting platform 20 and is fixed to the lower end of the valve body 30 by a fixing nut 23. A limiting part 24 extends laterally on one side of the valve body 30 and is located in the limiting groove 22. The valve body 30 is made of PK material (also known as POK material or polyketone material), which gives it a certain degree of hardness to facilitate connection and fixation by the fixing nut 23.

[0094] When the mounting platform 20 is in a horizontal position, the bottom surface of the piezoelectric valve 10 is closed at the upper end of the limiting groove 22, and the diameters of the fixing nut 23 and the valve body 30 are both smaller than the diameter of the mounting hole 21. Disassembly can be performed simply by rotating the other end of the mounting platform 20 downwards.

[0095] Based on the above, by cooperating the limiting groove 22 provided on the mounting platform 20 with the limiting part 24 on the valve body 30, and combining the closed design of the bottom surface of the piezoelectric valve 10 and the upper end of the limiting groove 22, the fixing of the valve body 30 on the mounting platform 20 is extremely simple and reliable. The fixing nut 23 is directly connected to the valve body 30 and its diameter is smaller than the diameter of the mounting hole 21. In the disassembly process, simply rotate the mounting platform 20 away from the bottom surface of the piezoelectric valve 10 to easily release the fixing of the valve body 30. At this time, the dispensing head 40 and the valve body 30 can be disassembled at the same time. The disassembly method is simple, quick and easy, saving time and effort.

[0096] Preferably, in one embodiment of the present invention, the upper surface of the other end of the mounting platform 20 is provided with two first connecting portions 4125, which are arranged opposite to each other. Each of the two first connecting portions 4125 has a fixing groove 251 on the side near the piezoelectric valve 10.

[0097] The piezoelectric valve 10 has a second connecting part 4111 on its side. The second connecting part 4111 is located behind the first connecting part 4125. The second connecting part 4111 has a transversely extending through groove 111 on its side. A fixing rod 12 is provided in the through groove 111.

[0098] When the mounting platform 20 is rotated to a horizontal position, the through groove 111 and the fixing groove 251 are opposite each other, so that the fixing rod 12 can be moved and locked into the two fixing grooves 251 at the same time, so as to fix the mounting platform 20 in a horizontal position.

[0099] Thus, when the mounting platform 20 rotates to a horizontal position, the fixing groove 251 on the first connecting part 4125 and the through groove 111 on the second connecting part 4111 are aligned front to back. At this time, the fixing rod 12 can be moved to simultaneously engage with the two fixing grooves 251, thereby firmly fixing the mounting platform 20 in a horizontal position. This design not only improves the stability of the mounting platform 20, preventing it from shaking or tilting during operation, but also ensures the precise positioning of the dispensing head 40 and the valve body 30, guaranteeing the accuracy and consistency of the dispensing operation. Of course, the structure described above is only one embodiment. In practical applications, the fixing method can be adjusted according to requirements, as long as the first connecting part 4125 and the second connecting part 4111 can be detachably connected.

[0100] Preferably, in one embodiment of the present invention, the valve body 30 includes a housing 31, an elastic seat 32, and a striking pin 33.

[0101] The housing 31 is provided with a glue channel 311, and the lower end of the glue channel 311 is provided with a glue outlet. The glue outlet is connected to the glue dispensing head 40. The upper end of the housing 31 is formed as an open opening, and the upper end of the fixing nut 23 is connected to the outer surface of the lower end of the housing 31.

[0102] The elastic seat 32 is located at the upper end of the glue passage 311.

[0103] The impact pin 33 is disposed in the glue passage 311, and its upper part passes through the elastic seat 32 and can be raised and lowered in the height direction. The upper end of the impact pin 33 is provided with a tail seat 331, and the lower surface of the tail seat 331 abuts against the elastic seat 32 so that the elastic seat 32 applies an upward elastic force to the tail seat 331. The output end of the piezoelectric valve 10 abuts against the upper surface of the tail seat 331 to control the raising and lowering of the impact pin 33.

[0104] Thus, by directly abutting the output end of the piezoelectric valve 10 against the upper surface of the tail seat 331 of the ejector pin 33, precise control of the lifting and lowering of the ejector pin 33 is achieved. When the piezoelectric valve 10 is activated, the ejector pin 33 rapidly descends, causing its front end to close the dispensing head 40, thus completing the dispensing process. The elastic seat 32 not only provides necessary support for the ejector pin 33 but also, through its elastic force, allows the ejector pin 33 to quickly reset each time dispensing (at which point the pressure of the piezoelectric valve 10 is released), preparing for the next action. This design avoids glue leakage, reduces glue waste, improves glue utilization, and lowers production costs.

[0105] Preferably, in one embodiment of the present invention, the elastic seat 32 includes a mounting seat 321 and a spring member 323.

[0106] The upper end of the inner wall of the glue channel 311 has a stepped surface 312, the mounting base 321 is mounted on the stepped surface 312, the mounting base 321 has an annular protrusion 322 in the middle, and the upper part of the firing pin 33 passes through the annular protrusion 322.

[0107] The spring 323 is sleeved on the outer surface of the annular protrusion 322, with its upper end abutting against the tailstock 331 and its lower end abutting against the mounting base 321.

[0108] Thus, the mounting base 321 is installed on the stepped surface 312 of the inner wall of the glue channel 311, and an annular protrusion 322 is provided to accommodate the upper part of the ejector pin 33. The spring element 323 is sleeved on the outer surface of the annular protrusion 322, with its upper end abutting against the tailstock 331 and its lower end abutting against the mounting base 321. This structure provides stable and uniform elastic support for the ejector pin 33. This design ensures the stability and accuracy of the ejector pin 33 during the lifting and lowering process, and guarantees the sealing effect of the ejector pin 33. The elastic force of the spring element 323 allows the ejector pin 33 to quickly and accurately reset each time glue is dispensed.

[0109] Meanwhile, since the spring element 323 is a consumable part, it is prone to losing its elasticity under high-frequency use. Therefore, the separate design of the mounting base 321 and the spring element 323 makes the maintenance and replacement of the elastic seat 32 simple and quick. When the spring element 323 loses its elasticity or is damaged due to prolonged use, the operator can easily remove it from the mounting base 321 and replace it with a new spring element 323 without replacing the entire elastic seat 32, thus reducing maintenance costs and time costs.

[0110] Preferably, in one embodiment of the present invention, the dispensing head 40 includes a connecting portion 41 and a needle head 42.

[0111] The connecting part 41 is flared, and a groove 313 is formed on the bottom surface of the housing 31. The upper end of the connecting part 41 is inserted into the groove 313.

[0112] The needle head 42 is integrally formed on the lower end of the connecting part 41. A dispensing channel 421 is formed inside the needle head 42. One end of the dispensing channel 421 extends through the lower end of the needle head 42, and the other end extends through the connecting part 41.

[0113] The lower end of the firing pin 33 extends into the connecting portion 41 to close or open the upper end of the dispensing channel 421.

[0114] Thus, the connecting part 41 of the dispensing head 40 is trumpet-shaped, allowing it to be tightly inserted into the groove 313 on the bottom surface of the housing 31, ensuring a stable connection between the dispensing head 40 and the housing 31. Simultaneously, the dispensing channel 421 formed within the needle head 42 is connected to the interior of the connecting part 41, and the lower end of the firing pin 33 extends into the connecting part 41, enabling precise closing or opening of the upper end of the dispensing channel 421. This design allows the lifting and lowering motion of the firing pin 33 to directly control the opening and closing of the dispensing channel 421, thereby achieving precise control of the dispensing amount.

[0115] The connecting part 41 and the needle head 42 of the dispensing head 40 are integrally molded, enhancing the stability and reliability of the structure. Meanwhile, the matching design of the impact pin 33 and the dispensing channel 421 also ensures its stability and accuracy during the lifting process. This stability is crucial for ensuring dispensing quality and improving production efficiency.

[0116] Preferably, in one embodiment of the present invention, the fixing nut 23 is sleeved on the outside of the connecting part 41, the fixing nut 23 has a through hole 231 in the middle, the needle head 42 passes through the through hole 231, and the upper end of the fixing nut 23 is threaded to the outer surface of the housing 31 to fix the connecting part 41 in the groove 313.

[0117] Thus, the fixing nut 23 is fitted onto the outside of the connecting part 41 and is tightly connected to the outer surface of the housing 31 through the thread at its upper end. This design not only simplifies the installation process but also greatly enhances the stability of the connection. Even under prolonged use or external impact, it ensures a stable connection between the dispensing head 40 and the housing 31, preventing loosening or detachment, thereby guaranteeing the continuity and accuracy of the dispensing operation.

[0118] Meanwhile, a through hole 231 is provided in the middle of the fixing nut 23, and the needle head 42 passes through the through hole 231. This design facilitates the extension of the needle head 42 and ensures precise alignment between the needle head 42 and the glue channel 311 inside the housing 31. The threaded connection of the fixing nut 23 makes installation and disassembly simpler and faster. When it is necessary to adjust the position of the dispensing head 40 or replace it with a new one, the operator can easily unscrew the fixing nut 23, complete the corresponding operation, and then retighten it. This design not only reduces maintenance and time costs but also improves the flexibility and adaptability of the equipment.

[0119] Preferably, in one embodiment of the present invention, the limiting part 24 is provided with a glue inlet channel 241, one end of the glue inlet channel 241 is connected to the glue passage channel 311, and the other end extends to the upper surface of the limiting part 24.

[0120] Thus, the design of the glue inlet channel 241 allows the glue to flow directly and smoothly from the upper surface of the limiting part 24 into the glue channel 311, avoiding the problems of poor glue flow or blockage that may occur in traditional designs. This optimized glue supply path not only improves the overall efficiency of the dispensing system but also ensures the stability and consistency of the glue during the flow process. Integrating the glue inlet channel 241 into the limiting part 24 makes full use of the space of the limiting part 24, making the overall mold structure more compact. It integrates multiple functions within a limited space, which is conducive to the miniaturization design and manufacturing of molds and reduces costs.

[0121] Preferably, in one embodiment of the present invention, the adhesive channel 311 includes an installation section 3111 and an adhesive passage section 3112. The installation section 3111 is disposed on the upper part of the housing 31, the elastic seat 32 is disposed in the installation section 3111, and the adhesive passage section 3112 is disposed on the lower part of the housing 31 and communicates with the installation section 3111.

[0122] Thus, the adhesive channel 311 is divided into an installation section 3111 and an adhesive delivery section 3112. The elastic seat 32 is installed within the installation section 3111. This design makes the installation position of the elastic seat 32 clear and independent, making it easier to operate during installation. If the elastic seat 32 is damaged later, it is also easy to disassemble and replace, reducing maintenance costs and difficulty. The installation section 3111 and the adhesive delivery section 3112 are connected and respectively located in different parts of the housing 31, which helps to optimize the flow path of the adhesive within the housing 31. The installation section 3111 provides installation space for the elastic seat 32, while the adhesive delivery section 3112 is responsible for smoothly conveying the adhesive. The reasonable layout of the two sections improves the stability and smoothness of the adhesive delivery process.

[0123] Preferably, in one embodiment of the present invention, the diameter of the adhesive section 3112 is smaller than the diameter of the mounting section 3111.

[0124] Thus, the smaller diameter of the gluing section 3112 allows the adhesive to flow more concentratedly, reducing adhesive retention and waste within the section. This design helps improve adhesive utilization and lower production costs.

[0125] On the other hand, refer to Figure 11 As shown, a dispensing valve device according to an embodiment of the present invention includes a quick-release dispensing head 40, a back plate 50, a dispensing tube 60, a first condensation assembly 70, and a second condensation assembly 80 as described above.

[0126] The back plate 50 is adapted to be mounted on the machine base, and the piezoelectric valve 10 is mounted on the back plate 50.

[0127] The hose 60 is located on one side of the piezoelectric valve 10. The lower end of the hose 60 is connected to the other end of the glue inlet channel 241 through a pipe to deliver glue into the glue inlet channel 241.

[0128] The first condensation component 70 is located on the side of the piezoelectric valve 10 and covers the pipe to control the temperature of the glue in the hose 60.

[0129] The second condensation component 80 is disposed on the bottom surface of the mounting platform 20 and covers the outer surface of the dispensing head 40 to control the temperature of the adhesive inside the dispensing head 40.

[0130] Based on the above, the quick-release dispensing head 40 makes replacement and maintenance of the dispensing head 40 more convenient, significantly improving production efficiency. The first condensing component 70 and the second condensing component 80 are used to control the temperature of the adhesive in the tubing 60 and the dispensing head 40, respectively. Precise temperature control ensures stable performance of the adhesive during flow and dispensing, preventing deterioration or clogging due to excessively high or low temperatures. Simultaneously, temperature control also helps improve dispensing accuracy and consistency. The entire dispensing valve device adopts an integrated design, with the back plate 50, piezoelectric valve 10, tubing 60, condensing components, and other components tightly combined to form a compact and efficient dispensing system. This design not only saves space but also improves the overall performance and reliability of the system.

[0131] 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.

[0132] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A quick release structure dispensing head, characterized in that, The utility model relates to a piezoelectric valve, a mounting platform, a valve body and a glue head. The mounting platform is rotatably connected to one side of the bottom surface of the piezoelectric valve and detachably connected to the side surface of the piezoelectric valve. The valve body is installed in the mounting hole. The output end of the piezoelectric valve presses the upper end of the valve body to control the opening and closing of the internal passage of the valve body. The lower end of the valve body is connected to a glue head.

2. The quick release structure dispensing head according to claim 1, wherein, The glue head is fixed to the lower end of the valve body by a fixed nut. The valve body has a limiting part extending laterally on one side. When the mounting platform is in a horizontal state, the bottom surface of the piezoelectric valve is closed to the upper end of the limiting slot.

3. The quick release structure dispensing head according to claim 2, wherein, The diameter of the fixed nut and the diameter of the valve body are both smaller than the diameter of the mounting hole. The upper surface of the other end of the mounting platform is provided with two first connecting parts. The side surface of the piezoelectric valve is provided with a second connecting part. The second connecting part is located behind the first connecting part.

4. The quick release structure dispensing head according to claim 3, wherein, The front side of the second connecting part is provided with a transversely extending through slot. The through slot is provided with a fixed rod. When the mounting platform is rotated to a horizontal state, the through slot and the fixed slot are opposite to each other.

5. The quick release structure dispensing head according to claim 3, wherein, The fixed rod can be clamped in the two fixed slots by moving the fixed rod to fix the mounting platform in a horizontal state. The valve body includes a shell, an elastic seat, a striker and a glue head. The shell is provided with a glue passing passage. The lower end of the glue passing passage is provided with a glue outlet. The upper end of the fixed nut is connected to the outer surface of the lower end of the shell. The elastic seat is provided on the upper end of the glue passing passage. The striker is provided in the glue passing passage. The upper part of the striker penetrates the elastic seat and can be lifted in the height direction. The upper end of the striker is provided with a tail seat. The lower surface of the tail seat abuts against the elastic seat to apply an upward elastic force to the tail seat by the elastic seat. The output end of the piezoelectric valve abuts against the upper surface of the tail seat to control the lifting of the striker. The elastic seat includes a mounting seat and a spring piece. The upper end of the spring piece abuts against the tail seat and the lower end abuts against the mounting seat. The glue head includes a connecting part and a needle head part. The connecting part is trumpet-shaped. The bottom surface of the shell is provided with a recess part. The upper end of the connecting part is inserted into the recess part. The needle head part is integrally formed at the lower end of the connecting part. The needle head part is internally provided with a glue passing passage. One end of the glue passing passage penetrates the lower end of the needle head part and the other end penetrates into the connecting part. The lower end of the striker extends into the connecting portion to close or open the upper end of the glue injection channel.

6. The quick release structure dispensing head according to claim 5, wherein, The fixing nut is arranged outside the connecting portion, the middle part of the fixing nut is provided with a through hole, the needle head is arranged in the through hole, and the upper end of the fixing nut is screwed with the outer surface of the shell to fix the connecting portion in the groove portion.

7. The quick release structure dispensing head according to claim 3, wherein, The limiting portion is provided with a glue injection channel, one end of the glue injection channel is communicated with the glue injection channel, and the other end extends to the upper surface of the limiting portion.

8. The quick release structure dispensing head according to claim 3, wherein, The glue injection channel comprises an installation section and a glue injection section, the installation section is arranged on the upper part of the shell, the elastic seat is arranged in the installation section, and the glue injection section is arranged on the lower part of the shell and is communicated with the installation section.

9. The quick release structure dispensing head according to claim 8, wherein, The diameter of the glue injection section is smaller than that of the installation section.

10. A dispensing valve apparatus, characterized by, The application relates to a glue injection head with a quick release structure. The back plate is suitable for being mounted on a machine table, and the piezoelectric valve is mounted on the back plate. The glue pipe is arranged on one side of the piezoelectric valve, the lower end of the glue pipe is communicated with the other end of the glue injection channel through a pipeline to send glue into the glue injection channel. The first condensing assembly is arranged on the side of the piezoelectric valve and covers the pipeline to control the temperature of the glue in the glue pipe. The second condensing assembly is arranged on the bottom surface of the installation platform and covers the outer surface of the glue injection head to control the temperature of the glue in the glue injection head. ​

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