Piston type large capacity volume valve for controlling precise quantitative output of glue solution

Abstract

The utility model discloses a piston type large capacity volume valve of control glue solution accurate quantitative output, including valve body, valve stem, driving part A, valve sleeve, driving part B, sealing piston and driving part C, the left part from top to bottom is equipped with the first chamber, the second chamber and the third chamber of intercommunication in valve body, and the right part is equipped with the fourth chamber, the bottom between third chamber and fourth chamber is equipped with U type glue storage channel, the third chamber is opened and has the glue hole, the left lower part of U type glue storage channel is opened and has the glue hole, the valve stem is worn and is equipped with the first chamber, the second chamber, the third chamber, U type glue storage channel left part and glue hole, and the outer wall between U type glue storage channel left part inner wall forms the glue flow channel, driving part A controls the valve stem to drive the plugging portion and moves up and down and corresponds to block / open glue hole, driving part B controls the valve sleeve and moves up and down and corresponds to open / block glue flow channel, sealing piston is located at the fourth chamber, effect: utilize the application can make glue solution accurate quantitative extrusion from glue hole.

Description

Technical Field

[0001] This utility model relates to the field of dispensing equipment technology, and in particular to a piston-type large-capacity volumetric valve for controlling the precise quantitative output of adhesive liquid. Background Technology

[0002] Dispensing valves are key components of dispensing machines, primarily used to precisely distribute fluids such as adhesives, sealants, and coatings to specific locations. They are widely used in industries such as optics, optoelectronics, automotive, electronics, biochemistry, and photovoltaic solar energy.

[0003] Commonly used dispensing valves include volumetric valves, back-suction dispensing valves, needle-type dispensing valves, plunger-type dispensing valves, and jet-type dispensing valves, etc.

[0004] The easy valve commonly used in the prior art for dispensing can apply adhesive to the surface of the product to be dispensed in a predetermined amount.

[0005] In the utility model patent "A volume valve device and dispensing mechanism for controlling the quantitative output of glue" filed earlier by the patent applicant with application number "202322981887.4", a set amount of glue is stored by setting a glue storage channel, and then the stored set amount of glue is squeezed out through its dispensing head to achieve quantitative dispensing.

[0006] Although it is widely used, the inventor of this patent discovered that it still has certain defects and shortcomings when using it.

[0007] Specifically, on the one hand, when the external adhesive enters the designated storage channel, the channel is very narrow, making it insufficient for storing and extruding large quantities of adhesive at a time. On the other hand, the external adhesive enters the storage channel passively, meaning it is primarily fed by gravity, naturally entering the channel and pushing against the pre-set stroke of the sealing plug to achieve quantitative storage. The drawback is that if the upward force is insufficient, the sealing plug cannot move quickly, resulting in a long quantitative storage time and failing to meet the requirements for rapid quantitative storage and extrusion. Furthermore, for adhesives with higher concentrations, the flow rate is relatively slow, further extending the quantitative storage time and making it unsuitable for rapid emergency use.

[0008] In response, the inventor of this patent, drawing on work 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

[0009] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this invention is to provide a piston-type large-capacity volumetric valve for controlling the precise quantitative output of adhesive liquid.

[0010] To achieve one of the above objectives, a piston-type large-capacity volumetric valve for controlling the precise quantitative output of adhesive liquid according to an embodiment of the present invention includes:

[0011] The valve body has a first chamber, a second chamber, and a third chamber connected sequentially from top to bottom on the left side; a fourth chamber is located on the right side of the valve body; a U-shaped glue storage channel is provided between the bottom of the third chamber and the bottom of the fourth chamber; a glue inlet is opened outward on the side wall of the third chamber; and a glue outlet is opened downward on the lower left side of the U-shaped glue storage channel.

[0012] Valve stem; the valve stem passes through the first chamber, the second chamber, the third chamber, the left part of the U-shaped glue storage channel, and the glue outlet from top to bottom. Its outer diameter is slightly smaller than the inner diameter of the left part of the U-shaped glue storage channel, so that a glue flow channel is formed between its outer wall and the inner wall of the left part of the U-shaped glue storage channel. The lower end of the valve stem protrudes outward to form a sealing part located below the glue outlet with an outer diameter larger than the inner diameter of the upper end of the glue outlet.

[0013] Drive component A; The drive component A is disposed in the first chamber and connected to the valve stem to control the valve stem to drive the sealing part to move up and down to block / open the glue outlet hole accordingly;

[0014] Valve sleeve; the valve sleeve is movably sleeved on the valve stem and located in the second chamber and the third chamber, and its lower end can extend into the glue channel to block the upper end of the glue channel;

[0015] Drive component B; The drive component B is disposed in the second chamber and connected to the valve sleeve to control the valve sleeve to move up and down to open / block the glue flow channel accordingly;

[0016] A sealing piston; the sealing piston is movable up and down and locked in the fourth chamber, and its top is connected to a piston rod that extends upward out of the fourth chamber;

[0017] Drive component C; The drive component C is located outside the upper part of the fourth chamber and is connected to the upper end of the piston rod. When the glue outlet is blocked and the glue flow channel is open, the drive component C controls the piston rod to drive the sealing piston to move upward, thereby drawing the glue introduced from the glue inlet into the U-shaped glue storage channel and the lower part of the fourth chamber for storage. When the glue outlet is open and the glue flow channel is blocked, the drive component C controls the piston rod to drive the sealing piston to move downward, thereby precisely and quantitatively extruding the glue stored in the U-shaped glue storage channel and the lower part of the fourth chamber from the glue outlet.

[0018] In addition, the piston-type large-capacity volumetric valve for controlling the precise quantitative output of adhesive liquid according to the above embodiments of this utility model may also have the following additional technical features:

[0019] According to one embodiment of the present invention, a fixing frame is provided on the right side of the valve body along the vertical direction, and the driving component C is fixed on the fixing frame.

[0020] According to one embodiment of the present invention, the driving component C includes a drive motor, a turntable, a linkage plate, an eccentric wheel, and a driven wheel;

[0021] The drive motor is fixed laterally on the fixed frame. The turntable is sleeved on the shaft of the drive motor in the middle. An eccentric shaft is fixed near its edge and perpendicular to the turntable on the side of the turntable facing away from the drive motor. The linkage plate has an upper sleeve hole at the upper end and a lower sleeve hole at the lower end. The eccentric wheel is rotatably fixed outside the eccentric shaft and rotatably locked in the upper sleeve hole. The driven wheel is rotatably fixed at the upper end of the piston rod and rotatably locked in the lower sleeve hole.

[0022] When the drive motor drives the turntable to rotate, the linkage plate can periodically drive the driven wheel to move up and down, thereby driving the piston rod to drive the sealing piston to reciprocate up and down inside the fourth chamber.

[0023] According to one embodiment of the present invention, a through groove A is vertically formed between the bottom of the first chamber and the top of the second chamber, suitable for the valve stem to pass through in an interference fit; a through groove B is vertically formed between the bottom of the second chamber and the top of the third chamber, suitable for the valve sleeve to pass through in an interference fit.

[0024] A sealing ring A is fitted inside the through groove A, which is tightly fitted outside the valve stem and does not move up and down with the valve stem; a sealing ring B is fitted inside the through groove B, which is tightly fitted outside the valve sleeve and does not move up and down with the valve sleeve.

[0025] According to one embodiment of the present invention, the outer wall of the valve stem is fitted with a sealing ring C that is adapted to abut against the inner wall of the valve sleeve;

[0026] When the valve sleeve moves up and down to open / block the adhesive flow channel, its inner wall is always in close contact with the outer wall of the sealing ring C.

[0027] According to one embodiment of the present invention, a sealing ring D is fitted into the lower part of the third chamber;

[0028] The lower end of the valve sleeve is cut inward to form a pointed sealing part. When the driving member B controls the valve sleeve to move downward for a preset stroke, the pointed sealing part is inserted into the sealing ring D, and its outer wall is tightly abutted against the inner wall of the sealing ring D to block the glue flow channel.

[0029] According to one embodiment of the present invention, the dispensing hole is formed into a trumpet-shaped structure, such that its lower inner diameter is larger than its upper inner diameter, and a sealing ring E is fitted into its upper inner part;

[0030] The outer diameter of the upper end of the sealing part is smaller than that of the lower end. When the driving component A controls the valve stem to move upward for a preset stroke, the upper end of the sealing part extends into the sealing ring E, and its upper outer wall tightly abuts against the inner wall of the sealing ring E to block the upper part of the glue outlet hole.

[0031] According to one embodiment of the present invention, it further includes an adhesive inlet tube for introducing adhesive liquid and an adhesive dispensing head for discharging adhesive liquid.

[0032] The glue inlet tube is located on the side of the valve body, and its connecting end is detachably connected to the glue inlet hole; the glue dispensing head is located at the bottom of the valve body, and its upper end is detachably connected to the glue outlet hole and is enclosed outside the sealing part.

[0033] According to one embodiment of the present invention, it further includes an anti-rotation nut for adjusting the downward movement stroke of the sealing part to control the opening amplitude of the upper part inside the glue outlet hole;

[0034] The valve body has a through groove C on the top left side that extends into the first chamber. A sealing ring F, adapted to abut against the outer wall of the valve stem, is fitted into the bottom of the through groove C. The anti-rotation nut is threaded into the upper part of the through groove C, and a movable groove is vertically opened along its inner edge, penetrating its upper and lower end faces. The upper end of the valve stem extends upward and passes through the through groove C and the movable groove with an interference fit, extending out to the upper part of the movable groove. A limiting protrusion with an outer diameter larger than the inner diameter of the movable groove is fixed on its top.

[0035] When the anti-rotation nut is turned and moves up and down along the through groove C, the gap between its upper top surface and the lower bottom surface of the limiting protrusion is adjustable.

[0036] According to one embodiment of the present invention, the driving component A includes a piston A sleeved on the valve stem and a pressure-relieving spring A fixed at the bottom of the piston A and enclosing the valve stem; the lower end of the pressure-relieving spring A abuts against the bottom surface of the first chamber; a gas inlet / outlet connector A for an external gas supply device is fixed above the valve body side, and the gas inlet / outlet connector A communicates with the upper part of the first chamber.

[0037] The driving component B includes a piston B fixed outside the valve sleeve and a pressure-relieving spring B fixed on the top of the piston B and enclosing the valve sleeve; the upper end of the pressure-relieving spring B abuts against the top surface of the second chamber; a gas inlet / outlet connector B for an external gas supply device is fixed below the side of the valve body, and the gas inlet / outlet connector B communicates with the lower part of the second chamber.

[0038] Firstly, this application provides a fourth chamber, the lower part of which is also used to store adhesive liquid. Compared with the patent documents in the background art, which only use their set adhesive storage channels for quantitative storage of adhesive liquid, this application has a large single adhesive liquid storage capacity, which can meet the needs of quantitative storage and extrusion of a relatively large amount of adhesive liquid at one time.

[0039] Secondly, this application makes technical improvements and optimizations, and sets up the driving component C, so that when the glue outlet is blocked and the glue flow channel is open, it controls the piston rod to drive the sealing piston to move upward by a preset stroke, thereby drawing the glue introduced from the glue inlet into the U-shaped glue storage channel and the lower part of the fourth chamber for storage. In this way, regardless of the concentration of the glue used, the sealing piston can be actively controlled to move upward quickly by suction and actively controlled to move downward quickly by pushing. This makes the glue quantitative storage time of this application short, which can meet the requirements of rapid quantitative storage and rapid quantitative extrusion for use, and can quickly meet emergency needs.

[0040] Thirdly, the drive components A, B, and C provided in this application operate independently yet collaboratively. This allows for the independent control of the valve stem A to move up and down to block / open the dispensing hole, the independent control of the valve sleeve to move up and down to open / block the adhesive flow channel, and the independent control of the sealing piston to move up and down to draw in the required amount of adhesive and push out the required amount of adhesive. They do not interfere with or affect each other, making this application stable and reliable in use.

[0041] 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

[0042] 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.

[0043] Figure 1 This is a schematic diagram of the overall structure of the piston-type large-capacity volumetric valve for controlling the precise quantitative output of adhesive liquid according to this utility model. Figure 1 ;

[0044] Figure 2 This is a schematic diagram of the overall structure of the piston-type large-capacity volumetric valve for controlling the precise quantitative output of adhesive liquid according to this utility model. Figure 2 ;

[0045] Figure 3 This is an exploded view of the piston-type large-capacity volumetric valve for controlling the precise quantitative output of adhesive liquid according to this utility model.

[0046] Figure 4 yes Figure 3 Enlarged view of H in the middle;

[0047] Figure 5 This is a longitudinal sectional view of the piston-type large-capacity volumetric valve for controlling the precise quantitative output of adhesive liquid according to this utility model.

[0048] Figure 6 This is a longitudinal sectional view of the piston-type large-capacity volumetric valve for controlling precise quantitative output of adhesive liquid according to this utility model, with the valve stem, drive component A, valve sleeve, drive component B, sealing piston and piston rod removed.

[0049] Figure 7 This is a longitudinal sectional view of the valve stem, drive component A, valve sleeve and drive component B connected together in this embodiment of the utility model;

[0050] Figure 8 This is a longitudinal sectional view of the sealing piston, piston rod and driving component C connected together in an embodiment of the present invention;

[0051] Figure label:

[0052] Valve body 10;

[0053] First chamber 101; Second chamber 102; Third chamber 103; Fourth chamber 104; U-shaped glue storage channel 105; Glue flow channel 1051; Glue inlet 106; Glue outlet 107; Fixing bracket 108; Through groove A109; Through groove B110; Sealing ring A111; Sealing ring B112; Sealing ring D113; Sealing ring E114; Through groove C115; Sealing ring F116; Gas inlet / outlet connector A117; Gas inlet / outlet connector B118; Maintenance port 119; Sealing plug 120; Retaining ring 121; Retaining groove 1211; Plug 122;

[0054] Valve stem 20;

[0055] 201; sealing ring C202; limiting protrusion 203;

[0056] Drive unit A30;

[0057] Piston A301; Pressure-relieving spring A302;

[0058] Valve sleeve 40;

[0059] Pointed sealing part 401;

[0060] Drive unit B50;

[0061] Piston B501; Pressure-relieving spring B502;

[0062] Sealed piston 60;

[0063] Piston rod 70;

[0064] Drive component C80;

[0065] Drive motor 801; turntable 802; counting notch 8021; eccentric shaft 8021; linkage plate 803; upper sleeve hole 8031; lower sleeve hole 8032; eccentric wheel 804; driven wheel 805; through-beam fiber optic sensor 806;

[0066] Inlet hose 90;

[0067] Dispensing head 100;

[0068] Locking sleeve 1001; dispensing needle 1002; insert sleeve 10021;

[0069] Anti-rotation nut 110;

[0070] 1101 movable groove; 1102 threaded section; 1103 anti-rotation section; 11031 rotating groove; 1104 screwing section; 1105 wrapping spring; 1106 movable limit rod;

[0071] 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

[0072] 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.

[0073] 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 are based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] The following describes in detail, with reference to the accompanying drawings, a piston-type large-capacity volumetric valve 1000 for controlling the precise quantitative output of adhesive liquid according to an embodiment of the present invention.

[0078] Reference Figures 5 to 8As shown, the piston-type large-capacity volumetric valve 1000 for controlling the precise quantitative output of adhesive liquid according to an embodiment of this utility model includes a valve body 10, a valve stem 20, a drive component A30, a valve sleeve 40, a drive component B50, a sealing piston 60, and a drive component C80.

[0079] The valve body 10 has a first chamber 101, a second chamber 102, and a third chamber 103 connected sequentially from top to bottom on the left side; a fourth chamber 104 is provided on the right side of the valve body 10; a U-shaped glue storage channel 105 is provided between the bottom of the third chamber 103 and the bottom of the fourth chamber 104; a glue inlet hole 106 is opened outward on the side wall of the third chamber 103; a glue outlet hole 107 is opened downward on the lower left side of the U-shaped glue storage channel 105, and the inner diameter of the lower end of the glue outlet hole 107 is larger than the inner diameter of its upper end;

[0080] Furthermore, the valve stem 20 is installed from top to bottom in the first chamber 101, the second chamber 102, the third chamber 103, the left part of the U-shaped glue storage channel 105, and the glue outlet 107. Its outer diameter is slightly smaller than the inner diameter of the left part of the U-shaped glue storage channel 105, so that a glue flow channel 1051 is formed between its outer wall and the inner wall of the left part of the U-shaped glue storage channel 105. The lower end of the valve stem 20 protrudes outward to form a sealing part 201 located below the glue outlet 107 with an outer diameter larger than the inner diameter of the upper end of the glue outlet 107.

[0081] Based on this, in this application, the driving component A30 is disposed in the first chamber 101 and connected to the valve stem 20 to control the valve stem 20 to drive the sealing part 201 to move up and down to block / open the glue outlet 107 accordingly. That is, when the sealing part 201 is driven to move upward for a preset stroke, it can reach the upper inner wall of the glue outlet 107 to block its upper part. When the sealing part 201 is driven to move downward for a preset stroke, it can move downward away from the upper inner wall of the glue outlet 107 to open its upper part.

[0082] Based on this, in this application, the valve sleeve 40 is movably sleeved outside the valve stem 20 and located in the second chamber 102 and the third chamber 103. Its lower end can extend into the glue channel 1051 and closely abut against the inner wall of the upper end of the glue channel 1051 to block the upper end of the glue channel 1051.

[0083] Meanwhile, in this application, the driving component B50 is disposed in the second chamber 102 and connected to the valve sleeve 40 to control the valve sleeve 40 to move up and down to open / block the adhesive channel 1051 accordingly. That is, when the valve sleeve 40 is driven to move upward for a preset stroke, it can move upward away from the upper end of the adhesive channel 1051 to open the upper end of the adhesive channel 1051. When the valve sleeve 40 is driven to move downward for a preset stroke, its lower end can extend into the adhesive channel 1051 and closely abut against the inner wall of the upper end of the adhesive channel 1051 to block the upper end of the adhesive channel 1051.

[0084] Furthermore, in this application, the sealing piston 60 is movable up and down and is locked in the fourth chamber 104, and its top is connected to a piston rod 70 that extends upward to the outside of the fourth chamber 104;

[0085] Based on this, the drive component C80 described in this application is located outside the upper part of the fourth chamber 104 and connected to the upper end of the piston rod 70, and its function is as follows:

[0086] On the one hand, when the glue outlet 107 is blocked and the glue flow channel 1051 is open, the piston rod 70 is controlled to drive the sealing piston 60 to move upward, thereby drawing the glue introduced from the glue inlet 106 into the U-shaped glue storage channel 105 and the lower part of the fourth chamber 104 for storage.

[0087] On the other hand, when the glue outlet 107 is open and the glue flow channel 1051 is blocked, the piston rod 70 is controlled to drive the sealing piston 60 to move downward so as to precisely and quantitatively squeeze out the glue stored in the lower part of the U-shaped glue storage channel 105 and the fourth chamber 104 from the glue outlet 107.

[0088] Based on the above, it is clear that in specific implementation, this application is mainly used as a piston-type large-capacity volumetric valve 1000 for controlling the precise quantitative output of adhesive liquid.

[0089] Specifically, when applying this application, the application is assembled according to the structure described above, and the gas inside the valve body 10 is purged in advance. The valve stem 20 is controlled to move upward by a preset stroke through the drive member A30 to block the upper part of the glue outlet 107 with the sealing part 201. The valve sleeve 40 is controlled to move upward by a preset stroke through the drive member B50 to open the glue flow channel 1051. In this way, the glue to be used can be squeezed into the third chamber 103 through the glue inlet 106 and enter the U-shaped glue storage channel 105 and the lower part of the fourth chamber 104 along the glue flow channel 1051.

[0090] The moment the introduced adhesive enters the lower part of the fourth chamber 104, upon contact with the bottom surface of the sealing piston 60, the driving component C80 drives the piston rod 70 to move upward, thereby causing the sealing piston 60 to move upward along the fourth chamber 104 for a predetermined distance. In this way, the adhesive can be actively drawn into the lower part of the fourth chamber 104 for storage. Then, the driving component B50 controls the valve sleeve 40 to move downward for a predetermined distance to block the upper end of the adhesive flow channel 1051. At this time, the U-shaped adhesive storage channel 105 and the lower part of the fourth chamber 104 will store a set amount of adhesive.

[0091] Subsequently, when it is necessary to apply adhesive to the desired location on the product surface, the valve rod 20A can be moved downward by the drive component A30 to open the upper part of the dispensing hole 107. Simultaneously, the piston rod 70 is controlled by the drive component C80 to drive the sealing piston 60 downward by a preset stroke. In this way, the adhesive stored in the U-shaped adhesive storage channel 105 and the fourth chamber 104 can be precisely and quantitatively squeezed out from the dispensing hole 107 onto the product surface to achieve dispensing.

[0092] The use of this application as described above will obviously have the following technical effects:

[0093] On the one hand, this application provides the fourth chamber 104, the lower part of which is also used to store adhesive liquid. Compared with the patent documents in the background art, which only use the set adhesive storage channel for quantitative storage of adhesive liquid, this application has a large single adhesive liquid storage capacity, which can meet the needs of quantitative storage and extrusion of a relatively large amount of adhesive liquid at one time.

[0094] On the other hand, in the patent literature described in the background art, when the external adhesive enters the set adhesive storage channel, it is passively fed in. That is, it mainly enters the set adhesive storage channel naturally by its own gravity and pushes the set sealing plug to a preset stroke to achieve quantitative storage. When the upward force is insufficient, the set sealing plug is difficult to move upward quickly, resulting in a long quantitative storage time for the adhesive. It cannot meet the requirements of rapid quantitative storage and rapid quantitative extrusion. Moreover, for adhesives with higher concentrations, their flow rate is relatively slow, which makes the quantitative storage time of the adhesive even longer, so as not to quickly meet the needs of emergency.

[0095] In response, this application makes technical improvements and optimizations, and sets up the driving component C80 so that when the glue outlet 107 is blocked and the glue flow channel 1051 is open, it controls the piston rod 70 to drive the sealing piston 60 to move upward by a preset stroke, thereby drawing the glue introduced from the glue inlet 106 into the lower part of the U-shaped glue storage channel 105 and the fourth chamber 104 for storage. In this way, regardless of the concentration of the glue used, the sealing piston 60 can be actively controlled to move upward quickly by suction and to move downward quickly by pushing. This makes the glue quantitative storage time of this application short, which can meet the requirements of rapid quantitative storage and rapid quantitative extrusion, and can quickly meet emergency needs.

[0096] Furthermore, the drive components A30, B50, and C80 provided in this application operate independently and collaboratively, enabling the valve stem 20A to move up and down independently to block / open the glue outlet 107, the valve sleeve 40 to move up and down independently to open / block the glue flow channel 1051, and the sealing piston 60 to move up and down independently to draw in the required amount of glue and push out the required amount of glue. They do not interfere with or affect each other, making this application stable and reliable in use.

[0097] Furthermore, through the above-mentioned optimized design, the whole constituted by this application is highly practical and has a good effect in use.

[0098] Furthermore, in a specific implementation, according to one embodiment of the present invention, a fixing frame 108 is provided on the right side of the valve body 10 along the vertical direction, and the driving member C80 is fixed on the fixing frame 108.

[0099] Based on this, in comparison Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the driving component C80 includes a drive motor 801, a turntable 802, a linkage plate 803, an eccentric wheel 804, and a driven wheel 805;

[0100] The drive motor 801 is horizontally fixed on the fixed frame 108. The turntable 802 is sleeved on the shaft of the drive motor 801 in the middle. An eccentric shaft 8021 is fixed near its edge and perpendicular to the turntable 802, which is opposite to the drive motor 801. The linkage plate 803 has an upper sleeve hole 8031 ​​at its upper end and a lower sleeve hole 8032 at its lower end. The eccentric wheel 804 is rotatably fixed outside the eccentric shaft 8021 and rotatably locked in the upper sleeve hole 8031. The driven wheel 805 is rotatably fixed at the upper end of the piston rod 70 and rotatably locked in the lower sleeve hole 8032.

[0101] When the drive motor 801 drives the turntable 802 to rotate, the linkage plate 803 can periodically drive the driven wheel 805 to move up and down, so as to drive the piston rod 70 to drive the sealing piston 60 to move up and down reciprocally inside the fourth chamber 104.

[0102] In this regard, it is clear that the driving component C80 described in this application includes the drive motor 801, turntable 802, linkage plate 803, eccentric wheel 804, and driven wheel 805. The eccentric shaft 8021 is fixedly mounted on the side of the turntable 802 facing away from the drive motor 801, near its edge and perpendicular to it. The linkage plate 803 has an upper sleeve hole 8031 ​​at its upper end and a lower sleeve hole 8032 at its lower end. The eccentric wheel 804 is rotatably fixed outside the eccentric shaft 8021 and rotatably engaged within the upper sleeve hole 8031. The driven wheel 805 is rotatably fixed to the upper end of the piston rod 70 and rotatably engaged within the piston rod 70. Within the lower sleeve hole 8032, when the drive motor 801 drives the turntable 802 to rotate, the eccentric wheel 804 will rotate eccentrically along the outer periphery of the turntable 802 along with the eccentric shaft 8021, causing its height to periodically increase and decrease. This, in turn, can drive the linkage plate 803 to periodically swing up and down, thereby periodically driving the driven wheel 805 to move up and down, ultimately driving the piston rod 70 to drive the sealing piston 60 to periodically reciprocate up and down inside the fourth chamber 104. This enables periodic active suction of adhesive for large-capacity quantitative and rapid storage of adhesive, and active pushing of adhesive for large-capacity and rapid extrusion of adhesive for use.

[0103] This results in a high degree of automation in this application, enabling large-capacity and rapid storage and retrieval of adhesive, resulting in fast usage speed and high efficiency, and meeting the rapid demand for quantitative dispensing of large-capacity adhesive in a short period of time.

[0104] Furthermore, in actual use, the eccentric wheel 804 and the driven wheel 805 included in the drive component C80 are raised or lowered by rotation. They are rotatable relative to the upper sleeve hole 8031 ​​and the lower sleeve hole 8032 of the linkage plate 803, which makes them wear-resistant and thus the drive component C80 of this application has a long service life.

[0105] Furthermore, through the above-mentioned optimized design, the overall performance of this application can be effectively improved.

[0106] Furthermore, in specific implementation, in accordance with... Figure 5 , Figure 6 and Figure 7 As shown, according to one embodiment of the present invention, a through groove A109 is vertically formed between the bottom of the first chamber 101 and the top of the second chamber 102, suitable for the valve stem 20 to pass through in an interference fit; a through groove B110 is vertically formed between the bottom of the second chamber 102 and the top of the third chamber 103, suitable for the valve sleeve 40 to pass through in an interference fit.

[0107] The through groove A109 is fitted with a sealing ring A111 that is tightly fitted outside the valve stem 20 and does not move up and down with the valve stem 20; the through groove B110 is fitted with a sealing ring B112 that is tightly fitted outside the valve sleeve 40 and does not move up and down with the valve sleeve 40.

[0108] In this regard, it is clear that:

[0109] On the one hand, by setting the through groove A109 and the sealing ring A111, the first chamber 101 and the second chamber 102 can be connected without affecting the up and down movement of the valve stem 20A. On the other hand, the first chamber 101 has good sealing performance and is not easy for adhesive to enter from the bottom up. It can better protect the drive component A30 from being contaminated by adhesive and corroded by adhesive, thus making its service life long.

[0110] On the other hand, by setting the through groove B110 and the sealing ring B112, the second chamber 102 and the third chamber 103 can be connected without affecting the up and down movement of the valve stem 20A. The second chamber 102 has good sealing performance and is not easy for adhesive to enter from the bottom up. It can better protect the drive component B50 from adhesive and corrosion, thus extending its service life.

[0111] Furthermore, in specific implementation, in accordance with Figure 5 and Figure 7 As shown, according to one embodiment of the present invention, the outer wall of the valve stem 20 is fitted with a sealing ring C202 that is adapted to abut against the inner wall of the valve sleeve 40;

[0112] When the valve sleeve 40 moves up and down to open / block the glue flow channel 1051, its inner wall is always in close contact with the outer wall of the sealing ring C202.

[0113] Therefore, even the tiny gap between the inner wall of the valve sleeve 40 and the outer wall of the valve stem 20A makes it difficult for adhesive to enter from the bottom up, preventing the adhesive from flowing upwards and further ensuring accurate quantitative storage and use of the adhesive.

[0114] Furthermore, in this technical solution, compared with Figure 5 and Figure 6 As shown, according to one embodiment of the present invention, a sealing ring D113 is fitted into the lower part of the third chamber 103;

[0115] The valve sleeve 40 has a pointed sealing part 401 formed by cutting the lower end inward. When the drive member B50 controls the valve sleeve 40 to move downward for a preset stroke, the pointed sealing part 401 is inserted into the sealing ring D113, and its outer wall is tightly abutted against the inner wall of the sealing ring D113 to block the glue flow channel 1051.

[0116] Therefore, by setting the sealing ring D113, the sealing performance of the upper end of the adhesive channel 1051 can be increased when it is blocked by the pointed sealing part 401. This makes it less likely for adhesive to leak upwards or downwards when the adhesive channel 1051 is blocked. It also protects and isolates the adhesive channel 1051, preventing the pointed sealing part 401 from directly contacting the inner wall of the upper end of the adhesive channel 1051 and damaging it. This makes the application more stable and reliable in use.

[0117] Furthermore, in this technical solution, we continue to compare... Figure 5 and Figure 6 As shown, according to one embodiment of the present invention, the glue outlet 107 is formed into a trumpet-shaped structure, such that its lower inner diameter is larger than its upper inner diameter, and a sealing ring E114 is fitted into its upper inner part.

[0118] Wherein, the outer diameter of the upper end of the sealing part 201 is smaller than the outer diameter of its lower end. When the driving member A30 controls the valve stem 20 to move upward for a preset stroke, the upper end of the sealing part 201 extends into the sealing ring E114, and its upper outer wall tightly abuts against the inner wall of the sealing ring E114 to block the upper part of the glue outlet hole 107.

[0119] Therefore, by setting the sealing ring E114, the sealing performance of the upper part of the dispensing hole 107 can be increased when it is blocked by the sealing part 201, so that when the present application is not in use, the dispensing hole 107 is not prone to downward leakage of glue, and it also plays a role in protecting and isolating the dispensing hole 107, so that the sealing part 201 will not directly contact the upper inner wall of the dispensing hole 107 and damage it, making the present application more stable and reliable in use.

[0120] Secondly, in specific implementation, refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, according to one embodiment of the present invention, this application further includes an adhesive inlet tube 90 for introducing adhesive and an adhesive dispensing head 100 for discharging adhesive.

[0121] The glue inlet tube 90 is located on the side of the valve body 10, and its connecting end is detachably connected to the glue inlet hole 106; the glue dispensing head 100 is located at the bottom of the valve body 10, and its upper end is detachably connected to the glue outlet hole 107 and is enclosed in the sealing part 201.

[0122] Therefore, by connecting the glue inlet pipe 90 to a glue storage container such as a glue bucket pre-filled with glue, a set amount of glue can be introduced into the lower part of the U-shaped glue storage channel 105 and the fourth chamber 104 of this application, so as to achieve precise quantitative output of glue during subsequent use. Furthermore, by setting the dispensing head 100, glue can be dispensed from its lower end to the product surface to achieve dispensing. Since both the glue inlet pipe 90 and the dispensing head 100 are detachable, it is also convenient for their maintenance and replacement.

[0123] Meanwhile, in this technical solution, compared with Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, according to one embodiment of the present invention, this application also includes an anti-rotation nut 110 for adjusting the downward movement stroke of the sealing part 201 to control the opening amplitude of the upper part of the dispensing hole 107;

[0124] The valve body 10 has a through groove C115 on its left top, which extends into the first chamber 101. A sealing ring F116 is fitted into the bottom of the through groove C115 and abuts against the outer wall of the valve stem 20. The anti-rotation nut 110 is threaded into the upper part of the through groove C115, and a movable groove 1101 is vertically opened along its inner edge, penetrating its upper and lower end faces. The upper end of the valve stem 20 extends upward and passes through the through groove C115 and the movable groove 1101 with an interference fit, extending out to the upper part of the movable groove 1101. A limiting protrusion 203 with an outer diameter larger than the inner diameter of the movable groove 1101 is fixed on its top.

[0125] When the anti-rotation nut 110 is turned and moves up and down along the through groove C115, the gap between its upper top surface and the lower bottom surface of the limiting protrusion 203 is adjustable.

[0126] In this regard, it is clear that the amount of adhesive discharged downward from the dispensing hole 107 per unit time can be controlled by adjusting the downward movement stroke of the sealing part 201 to control the opening range of the upper part of the dispensing hole 107. Therefore, this application provides an anti-rotation nut 110 for adjusting the downward movement stroke of the sealing part 201 to control the opening range of the upper part of the dispensing hole 107.

[0127] Initially, the anti-rotation nut 110 is positioned at a high height, resulting in a small gap between its upper surface and the lower surface of the limiting protrusion 203. Under these conditions, the valve stem 20 is controlled by the drive component A30 to move the sealing part 201 downwards until the lower surface of the limiting protrusion 203 reaches the upper surface of the anti-rotation nut 110, which is positioned at a high height. At this point, the valve stem 20 can no longer move the sealing part 201 downwards, resulting in a very small downward movement of the sealing part 201. Consequently, the upper opening of the glue outlet 107 is very small, resulting in a small amount of glue discharged downwards per unit time.

[0128] Conversely, when the anti-rotation nut 110 is tightened in the initial state to lower its height, the gap between its upper surface and the lower surface of the limiting protrusion 203 will increase. In this situation, the valve stem 20 is controlled by the drive component A30 to drive the sealing part 201 to move downward until the lower surface of the limiting protrusion 203 touches the upper surface of the anti-rotation nut 110, which is now at a lower height. At this point, the valve stem 20 can no longer drive the sealing part 201 to move downward. In this situation, the downward stroke of the sealing part 201 will be large, resulting in a large opening of the upper part of the glue outlet 107, which in turn results in a large amount of glue being discharged downward per unit time.

[0129] Therefore, it can be clearly seen that by adjusting the height of the anti-rotation nut 110, the opening range of the upper part of the glue outlet 107 can be adjusted, so that the amount of glue discharged downward from the lower end per unit time is controllable and adjustable, making this application more flexible in use, and allowing for flexible control of the amount of glue dispensed per unit time according to actual needs.

[0130] Furthermore, in specific implementation, refer to the diagram. Figure 5 and Figure 7 As shown, according to one embodiment of the present invention, the driving component A30 includes a piston A301 sleeved on the valve stem 20 and a pressure-relieving spring A302 fixed at the bottom of the piston A301 and enclosing the valve stem 20; the lower end of the pressure-relieving spring A302 abuts against the bottom surface of the first chamber 101; a gas inlet / outlet connector A117 for an external gas supply device is fixed above the side of the valve body 10, and the gas inlet / outlet connector A117 communicates with the upper part of the first chamber 101.

[0131] Furthermore, the drive component B50 includes a piston B501 fixed outside the valve sleeve 40 and a pressure relief spring B502 fixed on the top of the piston B501 and enclosing the valve sleeve 40; the upper end of the pressure relief spring B502 abuts against the inner top surface of the second chamber 102; a gas inlet / outlet connector B118 for connecting an external gas supply device is fixed below the side of the valve body 10, and the gas inlet / outlet connector B118 communicates with the lower part of the second chamber 102.

[0132] In this regard, it is clear that in this application, both the drive component A30 and the drive component B50 are driven by an external air supply device, so that the piston A301 of the drive component A30 can drive the valve stem 20 to move up and down, thereby blocking / opening the glue outlet 107, and the piston B501 of the drive component B50 can drive the valve sleeve 40 to move up and down, thereby opening / blocking the glue flow channel 1051.

[0133] During this process, when the piston A301 of the driving component A30 drives the valve stem 20 to move downward by a preset stroke to open the glue outlet 107, the pressure relief spring A302 provides pressure relief in the opposite direction, so that the piston A301 will not directly hit the bottom surface of the first chamber 101, thus ensuring good protection for the piston A301.

[0134] Similarly, when the piston B501 of the driving component B50 drives the valve sleeve 40 to move upward by a preset stroke to open the glue flow channel 1051, the pressure relief spring B502 provides pressure relief in the opposite direction, so that the piston B501 will not directly hit the inner top surface of the second chamber 102, thus ensuring that the piston B501 is also well protected.

[0135] Furthermore, through the above-mentioned optimized design, the overall performance of this application can be further improved.

[0136] It should be added that, in specific implementation, comparison should be made with... Figure 1 , Figure 5 and Figure 6 As shown, according to the embodiment of this utility model, a piston-type large-capacity volumetric valve 1000 for controlling the precise quantitative output of adhesive liquid has a maintenance port 119 extending to the left bottom of the U-shaped adhesive storage channel 105 on the left side wall of the valve body 10. A sealing plug 120 is inserted into the maintenance port 119.

[0137] Thus, by pouring cleaning fluid into the glue inlet 106, the third chamber 103 and the U-shaped glue storage channel 105 can be cleaned and maintained. When the sealing plug 120 is removed, the cleaning fluid can be discharged, making this application convenient to maintain and flexible to use. For example, when using this application to accurately store and output different glues, the third chamber 103 and the U-shaped glue storage channel 105 can be cleaned and maintained before changing the glue.

[0138] Furthermore, it is necessary to add that, in specific implementation, comparison should be made with... Figure 1 , Figure 3 and Figure 4 As shown, the piston-type large-capacity volume valve 1000 for controlling precise quantitative output of adhesive liquid according to an embodiment of the present invention has an anti-rotation nut 110 divided from bottom to top into a threaded section 1102, an anti-rotation section 1103, and a screwing section 1104 with an outer diameter larger than the outer diameter of the anti-rotation section 1103, and has a wrapping spring 1105 and a movable limiting rod 1106.

[0139] The threaded section 1102 is threaded into the upper part of the through groove C115, and the outer wall of the anti-rotation section 1103 has a plurality of rotating grooves 11031 evenly opened vertically; a retaining ring 121 is protruding from the top left side of the valve body 10 directly above the through groove C115, and the wrapping spring 1105 is interference-fitted and sleeved on the retaining ring 121. The retaining ring 121 has a groove 1211 that is vertically opened on the upper side to facilitate the interference fit of the movable limiting rod 1106 and penetrates its inner and outer walls;

[0140] Initially, the outer wall of the movable limiting rod 1106 abuts against the inner wall of the wrapping spring 1105, and the inner wall abuts into one of the rotating grooves 11031. When the screwing section 1104 is rotated, the movable limiting rod 1106 pushes the wrapping spring 1105 outward and can rotate from one of the rotating grooves 11031 to abut into another rotating groove 11031 directly opposite it. In this way, the anti-rotation nut 110 can rotate to the required range. Thus, under the coordinated action of the wrapping spring 1105, the movable limiting rod 1106, the rotating groove 11031, and the locking groove 1211, the anti-rotation nut 110 can maintain the relevant rotation range when no further force is applied to rotate it, making it highly stable in use.

[0141] Furthermore, in a preferred embodiment, the outer wall of the screwing section 1104 is provided with a scale marking with numerical values ​​to indicate the rotation range. In this way, even if the user can know the rotation range of the anti-rotation nut 110 when screwing it by visually looking at the corresponding scale marking, the anti-rotation nut 110 of this application is more intuitive and clear when in use.

[0142] Furthermore, it is necessary to add that, in specific implementation, comparison should be made with... Figure 3 and Figure 5 As shown, according to an embodiment of the present invention, a piston-type large-capacity volume valve 1000 for controlling precise quantitative output of adhesive liquid is provided. The lower part of the dispensing hole 107 is provided with a plug connector 122. Based on this, the dispensing head 100 of the present application preferably includes a locking sleeve 1001 and a dispensing needle 1002 with a plug connector 10021 at the upper end.

[0143] The insertion sleeve 10021 is inserted into and connected to the insertion connector 122. The locking sleeve 1001 is detachably fitted over the insertion sleeve 10021 and the insertion connector 122 to reinforce the stability of the connection between the insertion sleeve 10021 and the insertion connector 122. When the dispensing needle 1002 needs to be replaced, the locking sleeve 1001 can be pre-removed downwards to slide off the dispensing needle 1002. After replacing the dispensing needle 1002, the locking sleeve 1001 can be re-fitted from bottom to top onto the insertion sleeve 10021 and the insertion connector 122 of the new dispensing needle 1002. In this way, the present application can continue to be used.

[0144] Furthermore, it is necessary to add that, in specific implementation, comparison should be made with... Figure 1As shown in the embodiment of the present invention, the piston-type large-capacity volumetric valve 1000 for controlling precise quantitative output of adhesive liquid includes a drive component C80 further comprising a through-beam fiber optic sensor 806 fixed to the fixed frame 108 and disposed outside the edge of the turntable 802. The turntable 802 has a counting notch 8021 extending through its left and right end faces. When the drive motor 801 drives the turntable 802 to rotate, the counting notch 8021 periodically passes through the through-beam fiber optic sensor 806, thereby periodically generating a sensing signal to count the number of rotations of the turntable 802. One rotation of the turntable 802 indicates that the present application has performed a large-capacity quantitative storage and extrusion of adhesive liquid for quantitative use. Thus, by counting the number of rotations of the turntable 802, the amount of adhesive liquid used in the present application within a working period can be statistically analyzed to obtain accurate data.

[0145] Other embodiments, etc., will not be described here.

[0146] In summary, the piston-type large-capacity volumetric valve 1000 for controlling precise quantitative output of adhesive provided in this application, in specific implementation, includes a fourth chamber 104, the lower part of which is also used to store adhesive. Compared with the prior art patent documents that only use their set adhesive storage channels for quantitative storage of adhesive, this application has a large single adhesive storage capacity, which can meet the needs of quantitative storage and extrusion of a relatively large amount of adhesive in a single operation.

[0147] Furthermore, this application makes technical improvements and optimizations, and sets up the driving component C80 so that when the glue outlet 107 is blocked and the glue flow channel 1051 is open, it controls the piston rod 70 to drive the sealing piston 60 to move upward by a preset stroke, thereby drawing the glue introduced from the glue inlet 106 into the lower part of the U-shaped glue storage channel 105 and the fourth chamber 104 for storage. In this way, regardless of the concentration of the glue used, the sealing piston 60 can be actively controlled to move upward quickly by suction and to move downward quickly by pushing. This makes the glue quantitative storage time of this application short, which can meet the requirements of rapid quantitative storage and rapid quantitative extrusion, and can quickly meet emergency needs.

[0148] Furthermore, the drive components A30, B50, and C80 provided in this application operate independently and collaboratively, enabling the valve stem 20A to move up and down independently to block / open the glue outlet 107, the valve sleeve 40 to move up and down independently to open / block the glue flow channel 1051, and the sealing piston 60 to move up and down independently to draw in the required amount of glue and push out the required amount of glue. They do not interfere with or affect each other, making this application stable and reliable in use.

[0149] Furthermore, the piston-type large-capacity volumetric valve 1000 for controlling the precise quantitative output of adhesive 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 effectively popularized.

[0150] 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.

[0151] 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 piston-type large-capacity volumetric valve for controlling precise quantitative output of adhesive liquid, characterized in that, include: Valve body; The valve body has a first chamber, a second chamber, and a third chamber connected from top to bottom on the left side; a fourth chamber is located on the right side of the valve body; a U-shaped glue storage channel is located between the bottom of the third chamber and the bottom of the fourth chamber; a glue inlet hole is opened on the side wall of the third chamber; and a glue outlet hole is opened downward on the lower left side of the U-shaped glue storage channel. Valve stem; The valve stem passes through the first chamber, the second chamber, the third chamber, the left part of the U-shaped glue storage channel, and the glue outlet. Its outer diameter is slightly smaller than the inner diameter of the left part of the U-shaped glue storage channel, so that a glue flow channel is formed between its outer wall and the inner wall of the left part of the U-shaped glue storage channel. The lower end of the valve stem protrudes outward to form a sealing part located below the glue outlet with an outer diameter larger than the inner diameter of the upper end of the glue outlet. Drive component A; Drive component A is located in the first chamber and is connected to the valve stem to control the valve stem to drive the sealing part to move up and down to block / open the glue outlet hole accordingly; Valve sleeve; The valve sleeve is movably fitted around the valve stem and is located in the second and third chambers, with its lower end extending into the glue flow channel; Drive component B; Drive component B is located in the second chamber and is connected to the valve sleeve to control the up and down movement of the valve sleeve to open / block the glue flow channel accordingly. Sealing piston; the sealing piston is movable up and down and locked in the fourth chamber, and its top is connected to a piston rod; Drive component C; The drive component C is located outside the fourth chamber and is connected to the piston rod. When the glue outlet is blocked and the glue flow channel is open, it controls the piston rod to drive the sealing piston upward to draw the glue introduced from the glue inlet into the U-shaped glue storage channel and the lower part of the fourth chamber. When the glue outlet is open and the glue flow channel is blocked, it controls the piston rod to drive the sealing piston downward to precisely and quantitatively squeeze the glue stored in the U-shaped glue storage channel and the lower part of the fourth chamber out of the glue outlet.

2. The piston type large capacity volumetric valve for precisely quantifying the output of a glue solution according to claim 1, characterized in that, A fixed frame is provided on the right side of the valve body along the vertical direction, and the drive component C is fixed on the fixed frame.

3. The piston type large capacity volumetric valve for precisely quantifying the output of a glue solution according to claim 2, characterized in that, Drive component C includes a drive motor, a turntable, a linkage plate, an eccentric wheel, and a driven wheel; The drive motor is mounted horizontally on the fixed frame. The turntable is fixedly mounted on the shaft of the drive motor in the middle. An eccentric shaft is fixedly mounted on the side of the turntable that is opposite to the drive motor and perpendicular to it. The upper end of the linkage plate has an upper sleeve hole and the lower end has a lower sleeve hole. The eccentric wheel is rotatably fixed outside the eccentric shaft and is rotatably locked in the upper sleeve hole. The driven wheel is rotatably fixed on the upper end of the piston rod and is rotatably locked in the lower sleeve hole. When the drive motor drives the turntable to rotate, the linkage plate can periodically drive the driven wheel to move up and down, thereby driving the piston rod to drive the sealed piston to move up and down reciprocally inside the fourth chamber.

4. The piston type large capacity volumetric valve for precisely quantifying the output of a glue solution according to claim 1, characterized in that, A vertical groove A is provided between the bottom of the first chamber and the top of the second chamber, suitable for the valve stem to pass through with an interference fit; a vertical groove B is provided between the bottom of the second chamber and the top of the third chamber, suitable for the valve sleeve to pass through with an interference fit. A sealing ring A is fitted inside the through groove A, which is tightly fitted outside the valve stem and does not move up and down with the valve stem; a sealing ring B is fitted inside the through groove B, which is tightly fitted outside the valve sleeve and does not move up and down with the valve sleeve.

5. The piston type large capacity volumetric valve for precisely quantifying the output of a glue solution according to claim 1, characterized in that, The outer wall of the valve stem is fitted with a sealing ring C that fits against the inner wall of the valve sleeve; When the valve sleeve moves up and down to open / block the glue flow channel, its inner wall always abuts against the outer wall of the sealing ring C.

6. The piston-type large-capacity volumetric valve for controlling precise quantitative output of adhesive liquid according to claim 1, characterized in that, A sealing ring D is fitted into the lower part of the third chamber; The lower end of the valve sleeve is cut inward to form a pointed sealing part. When the drive component B controls the valve sleeve to move downward by a preset stroke, the pointed sealing part is inserted into the sealing ring D, and its outer wall abuts against the inner wall of the sealing ring D to block the glue flow channel.

7. The piston type large capacity volumetric valve for precisely quantifying output of a glue solution according to claim 1, wherein The dispensing hole is formed into a funnel shape, so that its lower inner diameter is larger than its upper inner diameter, and a sealing ring E is fitted into its upper inner part; The outer diameter of the upper end of the sealing part is smaller than that of the lower end. When the control valve rod of the drive component A moves upward by a preset stroke, the upper end of the sealing part extends into the sealing ring E, and its upper outer wall abuts against the inner wall of the sealing ring E to block the upper part of the glue outlet hole.

8. The piston type large capacity volumetric valve for precisely quantifying output of a glue solution according to claim 1, wherein, It also includes a glue inlet tube for introducing the glue and a glue dispensing head for discharging the glue; The glue inlet tube is located on the side of the valve body, and its connection end is detachably connected to the glue inlet hole; the glue dispensing head is located at the bottom of the valve body, and its upper end is detachably connected to the glue outlet hole and enclosed outside the sealing part.

9. The piston type large capacity volumetric valve for precisely quantifying output of a glue solution according to claim 1, wherein, It also includes an anti-rotation nut for adjusting the downward movement of the sealing part to control the opening range of the upper part inside the dispensing hole; A through groove C extending to the first chamber is opened on the top left side of the valve body. A sealing ring F, which fits against the outer wall of the valve stem, is installed at the bottom of the through groove C. An anti-rotation nut is threaded into the upper part of the through groove C, and a movable groove is opened vertically along its inner edge, penetrating its upper and lower end faces. The upper end of the valve stem extends upward and passes through the through groove C and the movable groove with an interference fit, extending out to the upper part of the movable groove. A limiting protrusion with an outer diameter larger than the inner diameter of the movable groove is fixed on its top. When the anti-rotation nut is turned and moves up and down along the through groove C, the gap between its upper top surface and the lower bottom surface of the limiting protrusion is adjustable.

10. The piston-type large-capacity volumetric valve for controlling precise quantitative output of adhesive liquid according to any one of claims 1-9, characterized in that, The driving component A includes a piston A sleeved outside the valve stem and a pressure relief spring A fixed at the bottom of the piston A and enclosed outside the valve stem; the lower end of the pressure relief spring A abuts against the bottom surface of the first chamber; a gas inlet / outlet connector A for an external gas supply device is fixed above the valve body side, and the gas inlet / outlet connector A communicates with the upper part of the first chamber. The driving component B includes a piston B fixed outside the valve sleeve and a pressure relief spring B fixed on the top of the piston B and enclosed outside the valve sleeve; the upper end of the pressure relief spring B abuts against the top surface of the second chamber; a gas inlet / outlet connector B for an external gas supply device is fixed below the side of the valve body, and the gas inlet / outlet connector B communicates with the lower part of the second chamber.

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