Direct-down quick-release type double piezoelectric ceramic dispensing valve device and dispensing equipment

Abstract

The utility model discloses a direct down quick release type double piezoelectric ceramic dispensing valve device and dispensing equipment, the dispensing valve device comprises a valve body, a valve head piece and a piezoelectric type driving mechanism, and a valve chamber is arranged in the valve body; the valve head part comprises a valve head seat, a valve head and a firing pin assembly, the valve head seat is pivotally connected to the bottom of the valve body, the valve head is detachably arranged on the valve head seat, and the firing pin assembly can slide in the valve head in the vertical direction; the piezoelectric type driving mechanism is arranged in the valve chamber and comprises a driving rod, a first piezoelectric ceramic pile column and a second piezoelectric ceramic pile column, the driving rod is arranged in the valve chamber in a pivoting mode around a pivoting point, the first piezoelectric ceramic pile column drives the driving rod to rotate upwards around the pivoting point, and the second piezoelectric ceramic pile column drives the driving rod to rotate upwards around the pivoting point. And the second piezoelectric ceramic pile column drives the driving rod to rotate downwards around the pivoting point, so that the driving rod drives the firing pin assembly to move up and down. According to the dispensing valve device provided by the embodiment of the utility model, the dispensing precision and reliability are higher, the continuous dispensing stability can be kept, and the valve head can be quickly replaced or maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to a point gum valve, especially a direct-down quick detachable double piezoelectric ceramic point gum valve device and point gum equipment. BACKGROUND

[0002] The piezoelectric point gum valve is a kind of precision equipment widely used in electronic, automobile manufacturing, mobile communication, photovoltaic semiconductor and biological pharmaceutical production and processing fields.Piezoelectric ceramic has the characteristics of high frequency response and high rigidity under piezoelectric effect, and can realize accurate point gum output.

[0003] The piezoelectric point gum valve in the related art comprises a valve body, a valve head, a striker assembly and a piezoelectric driving mechanism, the valve head is fixedly installed at the bottom of the valve body, the striker assembly is arranged in the valve body and can move up and down, the piezoelectric driving mechanism usually comprises a rotating rod, a piezoelectric ceramic stack and a reset spring, the rotating rod is horizontally arranged in the valve body and can rotate around a pivot point, the piezoelectric ceramic stack drives the rotating rod to rotate downward, so that one end of the rotating rod drives the striker assembly to move downward to extrude glue, and the reset spring drives the rotating rod to rotate upward to reset, in this way, the piezoelectric ceramic stack and the reset spring are matched to realize the up-down reciprocating rotation of the rotating rod.However, the reset spring has slow response and poor stability, and the performance decays after long time use, which leads to poor reset effect, thereby affecting the precision and reliability of the point gum valve.In addition, the fixed mode of the valve head fixed on the valve body is not convenient for replacing or maintaining the valve head, and cannot meet the purpose of quickly replacing the valve head under different point gum demands. SUMMARY

[0004] The utility model aims at at least one of the technical problems in the related art to some extent.Therefore, the purpose of the utility model is to provide a direct-down quick detachable double piezoelectric ceramic point gum valve device and point gum equipment.

[0005] To achieve the above-mentioned purpose, on the one hand, the direct-down quick detachable double piezoelectric ceramic point gum valve device according to the utility model embodiment comprises:

[0006] The valve body has a valve chamber in the valve body;

[0007] The valve head piece comprises a valve head seat, a valve head and a striker assembly, the valve head seat is pivotally connected to the bottom of the valve body, the valve head is detachably arranged on the valve head seat, and the striker assembly is slidable in the valve head in the up-down direction;

[0008] The piezoelectric driving mechanism is arranged in the valve chamber and is used to drive the striker assembly to move downward in the valve head to extrude glue;

[0009] The piezoelectric driving mechanism comprises a driving rod, a first piezoelectric ceramic stack and a second piezoelectric ceramic stack, the driving rod is pivotally arranged in the valve chamber around a pivot point, the first piezoelectric ceramic stack drives the driving rod to rotate upward around the pivot point, and the second piezoelectric ceramic stack drives the driving rod to rotate downward around the pivot point, so that the driving rod drives the striker assembly to move up and down in reciprocating rotation to extrude the gel.

[0010] In addition, the direct-down quick-release double-piezoelectric-ceramic dispensing valve device according to the above-mentioned embodiments of the utility model can further have the following additional technical features.

[0011] According to an embodiment of the utility model, the driving rod has an action end and a reset end, the pivot point is located between the action end and the reset end, and the action end is adjacent to the upper end of the striker.

[0012] The lower end of the first piezoelectric ceramic stack is in abutment with the reset end on the driving rod, the lower end of the second piezoelectric ceramic stack is in abutment with a pressure point on the driving rod, and the pressure point is located between the action end and the pivot point.

[0013] According to an embodiment of the utility model, the bottom surface of the driving rod is provided with a circular-arc groove at the position of the pivot point, the bottom of the valve chamber is provided with a cylindrical pin, and the cylindrical pin is located below the driving rod and rotationally cooperates with the circular-arc groove.

[0014] The first piezoelectric ceramic stack and the second piezoelectric ceramic stack are located above the driving rod and are respectively located on the two sides of the pivot point.

[0015] According to an embodiment of the utility model, the reset end of the driving rod is spaced apart from a first protruding part and a second protruding part, the first protruding part is located at the end of the reset end, the second protruding part is located at the pressure point, and the top surfaces of the first protruding part and the second protruding part are arc surfaces.

[0016] The lower end of the first piezoelectric ceramic stack has a first concave-arc groove in abutment with the first protruding part, and the lower end of the second piezoelectric ceramic stack has a second concave-arc groove in abutment with the second protruding part.

[0017] According to an embodiment of the utility model, the valve head part further comprises a locking part, the valve head seat is a strip-shaped structure, one end of the valve head seat is pivotally connected with the valve body through a pivot shaft, and the locking part is used to lock and fix the other end of the valve head seat with the valve body when the valve head seat is rotated to the bottom of the valve body.

[0018] According to one embodiment of the utility model, the locking piece is a locking bolt, the locking bolt is arranged on the valve body and is slidable along the horizontal direction between the first position and the second position;

[0019] The other end of the valve head seat has an open groove which is open to one side of the valve body to form an opening, when the locking bolt is located at the first position, the locking bolt is clamped in the open groove to lock and fix the valve head seat and the valve body, when the locking bolt is slid from the first position to the second position, the locking bolt slides out of the open groove from the opening to unlock the valve head seat.

[0020] According to one embodiment of the utility model, an elastic piece is further arranged between the valve body and the locking bolt, the elastic force provided by the elastic piece forces the locking bolt to be always at the first position.

[0021] According to one embodiment of the utility model, the valve head comprises a glue inlet seat, a glue storage seat and a glue outlet head, the top surface of the valve head seat is provided with an assembly groove, the glue inlet seat and the glue storage seat are embedded in the assembly groove, the glue inlet seat extends along the horizontal direction, one end of the glue inlet seat is connected with the glue storage seat, and the other end of the glue inlet seat extends outside the valve body, the glue outlet head is located below the valve head seat and is connected with the glue storage seat, and the striker assembly extends into the glue storage seat to extrude the glue in the glue storage seat from the glue outlet head.

[0022] According to one embodiment of the utility model, the valve head further comprises a locking sleeve, the locking sleeve is sleeved on the glue outlet head and is threadedly connected with the glue storage seat to seal and connect the glue outlet head to the bottom of the glue storage seat.

[0023] On the other hand, the glue dispensing equipment according to the embodiment of the utility model has the straight-down quick-release type double piezoelectric ceramic glue dispensing valve device as described above.

[0024] According to the down straight quick disassembly type double piezoelectric ceramic glue dispensing valve device and glue dispensing equipment provided by the embodiment of the utility model, the double piezoelectric ceramic driving mode of the first piezoelectric ceramic stack column and the second piezoelectric ceramic stack column is adopted in the valve chamber, the single piezoelectric ceramic driving mode of the traditional piezoelectric ceramic and the reset spring is replaced, the two piezoelectric ceramic stack columns are responsible for the upward and downward rotation of the driving rod respectively, the glue dispensing precision and reliability of the glue dispensing valve can be improved due to the quick response characteristics of the piezoelectric ceramic, meanwhile, the performance attenuation problem of the reset spring is overcome, and the stability of the continuous glue dispensing is maintained.

[0025] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without paying creative labor.

[0027] Figure 1 It is the structure schematic diagram of the down straight quick disassembly type double piezoelectric ceramic glue dispensing valve device of the embodiment of the utility model;

[0028] Figure 2 It is the sectional view of the down straight quick disassembly type double piezoelectric ceramic glue dispensing valve device of the embodiment of the utility model;

[0029] Figure 3 It is Figure 2 The local enlarged view of A in

[0030] Figure 4 It is the structure schematic diagram of the down straight quick disassembly type double piezoelectric ceramic glue dispensing valve device (valve head piece open state) one view of the embodiment of the utility model;

[0031] Figure 5 It is the structure schematic diagram of the down straight quick disassembly type double piezoelectric ceramic glue dispensing valve device (valve head piece open state) another view of the embodiment of the utility model.

[0032] Reference numerals:

[0033] 10. valve body;

[0034] 101. cylindrical pin;

[0035] H10. valve chamber;

[0036] 20. valve head piece;

[0037] 201. valve head seat;

[0038] H201. open slot;

[0039] 202. glue inlet seat;

[0040] 203. glue storage seat;

[0041] 204. glue outlet head;

[0042] 205. locking sleeve;

[0043] 206. striker;

[0044] 207. elastic reset piece;

[0045] 208. locking bolt;

[0046] 209. elastic piece;

[0047] 30. piezoelectric driving mechanism;

[0048] 301. driving rod;

[0049] D30. acting end;

[0050] D31. reset end;

[0051] 3011. first protruding part;

[0052] 3012. second protruding part;

[0053] H301. arc slot;

[0054] 302. first piezoelectric ceramic stack column;

[0055] H302. first concave arc slot;

[0056] 303. second piezoelectric ceramic stack column;

[0057] H303. second concave arc slot;

[0058] 40. glue supply device.

[0059] The realization, functional features and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0060] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application, and all other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application.

[0061] In the description of the present application, it should be understood that the orientation or positional relationship indicated by 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" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0062] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0063] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0064] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "on" second feature include that first feature is directly above and obliquely above second feature, or only indicate that first feature horizontal height is higher than second feature. First feature "under", "below" and "under" second feature include that first feature is directly below and obliquely below second feature, or only indicate that first feature horizontal height is less than second feature.

[0065] The utility model embodiment's direct below quick detach type double piezoelectric ceramic point glue valve device and point glue equipment are described in detail below with reference to the drawings.

[0066] Referring to Figures 1 to 5 As shown in the figure, the direct below quick detach type double piezoelectric ceramic point glue valve device provided by the utility model embodiment comprises a valve body 10, a valve head piece 20 and a piezoelectric driving mechanism 30.

[0067] Specifically, the valve body 10 has a valve chamber H10 therein, which is used for installing the piezoelectric driving mechanism 30.

[0068] The valve head piece 20 comprises a valve head seat 201, a valve head and a plunger assembly, the valve head seat 201 is pivotally connected to the bottom of the valve body 10, the valve head is detachably arranged on the valve head seat 201, and the plunger assembly is slidable in the valve head in the up-down direction.

[0069] That is, the valve head seat 201 is at the bottom of the valve body 10 and can rotate relative to the valve body 10, when the valve head seat 201 rotates downward, the valve head seat 201 is away from the bottom of the valve body 10, at this time, it is convenient to replace or maintain the valve head on the valve head seat 201, and when the valve head seat 201 rotates upward to the bottom of the valve body 10, the valve head seat 201 is fixed with the valve body 10, that is, the valve head can be connected to the bottom of the valve body 10.

[0070] The piezoelectric driving mechanism 30 is arranged in the valve chamber H10 and is used for driving the plunger assembly to move downward in the valve head to extrude the glue. It can be understood that in specific application, the valve head is connected to a glue supply device 40, and the glue supply device 40 continuously supplies the glue to the valve head. And the plunger assembly extrudes the glue in the valve head when it hits each time.

[0071] The piezoelectric driving mechanism 30 comprises a driving rod 301, a first piezoelectric ceramic stack 302 and a second piezoelectric ceramic stack 303, the driving rod 301 is pivotably arranged in the valve chamber H10 around a pivot point, the first piezoelectric ceramic stack 302 drives the driving rod 301 to rotate upward around the pivot point, and the second piezoelectric ceramic stack 303 drives the driving rod 301 to rotate downward around the pivot point, so that the driving rod 301 drives the striker assembly to move up and down in reciprocating rotation to extrude the glue.

[0072] Exemplarily, the bottom of the valve body 10 has the same through hole as the valve chamber H10, the striker assembly comprises a striker 206 and an elastic reset member 207, the striker 206 is slidable in the valve head along the up-down direction, and the elastic reset member 207 is used to drive the striker 206 to reset upward. The upper end of the striker 206 is located in the through hole, and one end of the driving rod 301 is located above the through hole, so that when the driving rod 301 rotates downward, the upper end of the striker 206 can be pressed, so that the striker 206 moves downward.

[0073] That is, the driving rod 301 is supported in the valve chamber H10 by a pivot point and can swing up and down around the pivot point. The first piezoelectric ceramic stack 302 is responsible for the upward rotation of the driving rod 301, and the second piezoelectric ceramic stack 303 is responsible for the downward rotation of the driving rod 301. Through the design of bidirectional driving, the driving rod 301 can realize stable up-down reciprocating rotation, and transmit the rotation movement to the striker assembly, so that the striker assembly can accurately move up and down in the valve head, thereby realizing accurate extrusion control of the glue.

[0074] According to the direct-down quick-release double-piezoelectric-ceramic dispensing valve device provided by the embodiment of the utility model, the double-piezoelectric-ceramic driving mode of the first piezoelectric ceramic stack 302 and the second piezoelectric ceramic stack 303 is adopted in the valve chamber H10, which replaces the single-piezoelectric-ceramic driving mode of the traditional piezoelectric ceramic and reset spring cooperation, and the two piezoelectric ceramic stacks are responsible for the upward and downward rotation of the driving rod 301 respectively. Since the piezoelectric ceramic has the characteristics of fast response, the dispensing accuracy and reliability of the dispensing valve can be improved, and the performance decay problem of the reset spring is also overcome, and the stability of the dispensing is maintained. In addition, the valve head member 20 is designed to be pivotally connected to the bottom of the valve body 10, and the valve head is detachably arranged on the valve head seat 201, so that the quick replacement or maintenance function of the valve head is realized, the applicability of the equipment is improved, and the purpose of quickly replacing or maintaining the valve head under different dispensing requirements can be met. This structure design not only solves the technical problems of slow response and poor stability of the traditional reset spring, but also overcomes the defects of inconvenient replacement or maintenance of the traditional valve head.

[0075] Reference Figure 2 and Figure 3As shown, in some embodiments of the utility model, the driving rod 301 has the acting end D30 and the reset end D31, the pivot point is located between the acting end D30 and the reset end D31, and is used for providing the rotating support for the driving rod 301.The acting end D30 is adjacent to the upper end of the striker 206, so that the acting end D30 can directly act on the upper end of the striker assembly, thereby realizing the driving of the striker assembly.

[0076] The lower end of the first piezoelectric ceramic stack column 302 is abutted with the reset end D31 on the driving rod 301, the reset end D31 of the driving rod 301 is downwardly rotated by the downward action of the first piezoelectric ceramic stack column 302 on the reset end D31, and the acting end D30 of the driving rod 301 can be upwardly rotated by the principle of lever.The lower end of the second piezoelectric ceramic stack column 303 is abutted with the pressure point on the driving rod 301, and the pressure point is located between the acting end D30 and the pivot point, that is, the pressure point and the reset end D31 are located on the two sides of the pivot point, and when the lower end of the second piezoelectric ceramic stack column 303 exerts downward action on the pressure point of the driving rod 301, the acting end D30 of the driving rod 301 can be downwardly rotated.

[0077] In the specific working process, when the first piezoelectric ceramic stack column 302 and the second piezoelectric ceramic stack column 303 work alternately, they act on the reset end D31 and the pressure point of the driving rod 301 respectively, so that the driving rod 301 can swing up and down around the pivot point.Because the acting end D30 is adjacent to the upper end of the striker assembly, the rotating movement of the driving rod 301 can be effectively converted into the up-and-down movement of the striker assembly.

[0078] In the specific working process, when the first piezoelectric ceramic stack column 302 and the second piezoelectric ceramic stack column 303 work alternately, they act on the reset end D31 and the pressure point of the driving rod 301 respectively, so that the driving rod 301 can swing up and down around the pivot point.Because the acting end D30 is adjacent to the upper end of the striker assembly, the rotating movement of the driving rod 301 can be effectively converted into the up-and-down movement of the striker assembly.

[0079] Referring to Figure 3 As shown, in an embodiment of the utility model, the bottom surface of the driving rod 301 is provided with a circular arc groove H301 at the position of the pivot point, the bottom of the valve chamber is provided with a cylindrical pin 101, and the cylindrical pin 101 is located below the driving rod 301 and rotationally matches with the circular arc groove H301, so that the driving rod 301 can stably rotate around the cylindrical pin 101, thereby realizing reliable pivot support.

[0080] The first piezoelectric ceramic stack column 302 and the second piezoelectric ceramic stack column 303 are located above the driving rod 301 and are respectively located on both sides of the pivot point. That is, the first piezoelectric ceramic stack column 302 and the second piezoelectric ceramic stack column 303 are respectively located on both sides of the pivot point with the cylindrical pin 101 as the center, forming a balanced layout structure. The first piezoelectric ceramic stack column 302 is located on one side of the reset end D31 and is used to drive the reset end D31 to move downward; the second piezoelectric ceramic stack column 303 is located on one side of the pressure applying point and is used to drive the acting end D30 to move downward. This layout makes the first piezoelectric ceramic stack column 302 and the second piezoelectric ceramic stack column 303 respectively exert downward pressure on the driving rod 301, and generate the required rotation torque through the lever principle.

[0081] With the above structure, the rotation matching structure of the circular arc groove H301 and the cylindrical pin 101 provides stable and reliable support, ensuring that the driving rod 301 always maintains an accurate rotation track during reciprocating motion. Secondly, the symmetrical layout of the first piezoelectric ceramic stack column 302 and the second piezoelectric ceramic stack column 303 about the pivot point helps to realize balanced force transmission, improves the stability of motion, and the overall structure is compact and reasonable, effectively reduces the wear between parts, prolongs the service life of the equipment.

[0082] Referring to Figure 3 In an embodiment of the present application, the reset end D31 of the driving rod 301 is provided with a first protruding part 3011 and a second protruding part 3012, the first protruding part 3011 is located at the end of the reset end D31, the second protruding part 3012 is located at the pressure applying point, and the top surface of the first protruding part 3011 and the second protruding part 3012 is an arc surface.

[0083] The lower end of the first piezoelectric ceramic stack column 302 has a first concave arc groove H302 abutting against the first protruding part 3011, and the lower end of the second piezoelectric ceramic stack column 303 has a second concave arc groove H303 abutting against the second protruding part 3012.

[0084] In this embodiment, the cooperation of the first protruding part 3011 and the first concave arc groove H302, and the cooperation of the second protruding part 3012 and the second concave arc groove H303, ensure that the first concave arc groove H302 below the first piezoelectric ceramic stack column 302 and the first protruding part 3011 on the driving rod 301 always maintain a good contact state, and the second concave arc groove H303 below the second piezoelectric ceramic stack column 303 and the second protruding part 3012 on the driving rod 301 always maintain a good contact state when the first piezoelectric ceramic stack column 302 and the second piezoelectric ceramic stack column 303 work. When the first piezoelectric ceramic stack column 302 or the second piezoelectric ceramic stack column 303 is elongated, the force can be smoothly transmitted to the driving rod 301 through the arc surface structure, and no violent impact or friction will be caused by the relative sliding of the contact surface. The design of such arc surface contact also has the effect of automatic centering, that is, even if there is a slight deviation in the assembly process, it can be automatically adjusted to the best contact state during the working process.

[0085] In other words, the good force transmission between the piezoelectric ceramic stack column and the driving rod 301 is realized through the arc surface contact, the cooperation of the first concave arc groove H302 and the first protruding part 3011, and the cooperation of the second concave arc surface and the second protruding part 3012, which ensures the stability of the contact point, avoids deviation and shaking during movement, and can realize more stable and more accurate dispensing operation.

[0086] Referring to Figure 2 , Figure 4 and Figure 5 , in one embodiment of the utility model, the valve head piece 20 further includes a locking piece, the valve head seat 201 is of strip structure, one end of the valve head seat 201 is pivotally connected with the valve body 10 through a pivot shaft, and the locking piece is used to lock and fix the other end of the valve head seat 201 with the valve body 10 when the valve head seat 201 is rotated to the bottom of the valve body 10.

[0087] In this embodiment, the strip structure of the valve head seat 201 cooperates with the pivot connection and the locking piece to form a flip cover type structure. When the valve head needs to be replaced or maintained, the operator only needs to release the locking state of the locking piece, and the valve head seat 201 can be rotated downward around the pivot shaft, so that the valve head is completely exposed, facilitating disassembly and installation. After replacement or maintenance is completed, the valve head seat 201 is turned upward again, and is fixed through the locking piece, so that the working state can be restored.

[0088] The pivot structure design not only ensures the stability of the structure, but also greatly improves the operation convenience. The locking piece provides reliable fixing effect. The whole disassembly and assembly process does not need complex tools, and the operation is simple, which greatly improves the efficiency of valve head replacement or maintenance.

[0089] Referring to Figures 4 to 5As shown in the utility model, in one embodiment of the utility model, the locking member is a locking bolt 208, which is arranged on the valve body 10 and is slidable in the horizontal direction between a first position and a second position. Exemplarily, one side of the valve body 10 is provided with a protruding mounting portion, and the mounting portion is provided with a horizontally extending strip-shaped hole, and the locking bolt 208 is arranged in the strip-shaped hole. The first position is the locking position, and the second position is the unlocking position.

[0090] The other end of the valve head seat 201 is provided with an open slot H201, which is open to one side of the valve body 10 to form an opening, so as to facilitate the locking bolt 208 to slide into or out of the open slot H201, thereby realizing the functions of quick locking and unlocking.

[0091] Specifically, when the locking bolt 208 is located at the first position, the locking bolt 208 is clamped in the open slot H201, so as to lock and fix the valve head seat 201 and the valve body 10. That is, at this time, the locking bolt 208 firmly fixes the valve head seat 201 on the valve body 10 through mechanical engagement with the open slot H201, so as to prevent any form of relative movement of the valve head seat 201 during the operation. This locking state ensures the stability and accuracy of the dispensing equipment during operation.

[0092] When the locking bolt 208 slides from the first position to the second position, the locking bolt 208 slides out of the open slot H201 from the opening, so as to unlock the valve head seat 201. That is, in this process, the locking bolt 208 will leave the open slot H201 through the opening, thereby releasing the engagement between the valve head seat 201 and the open slot H201.

[0093] In this embodiment, locking and unlocking can be completed by simple horizontal sliding, which is convenient and labor-saving. Moreover, the cooperation structure of the open slot H201 and the locking bolt 208 ensures the reliability of the locking state, effectively preventing loosening during operation. In addition, this sliding unlocking method is not only fast but also safe, and will not cause any damage to the equipment. After unlocking, the valve head seat 201 can be freely rotated, and the operator can conveniently replace or maintain the valve head.

[0094] Referring to Figure 2 and Figure 4 As shown in the utility model, in one embodiment of the utility model, the valve body 10 and the locking bolt 208 are further provided with an elastic member 209, and the elastic force provided by the elastic member 209 forces the locking bolt 208 to always be in the first position.

[0095] That is, the elastic member 209 is arranged to keep the locking bolt 208 in the first position, i.e. the locking position, in the natural state. This design ensures that the locking bolt 208 is automatically kept in the mechanical engagement with the opening groove H201 of the valve head seat 201 when no external force is applied, thereby achieving the reliable locking of the valve head seat 201 and the valve body 10.

[0096] The elastic member 209 can be a compression spring, one end of which is abutted against the mounting portion of the valve body 10, and the other end of which is abutted against the locking bolt 208. When the operator needs to unlock, the elastic force of the elastic member 209 needs to be overcome to horizontally push the locking bolt 208 from the first position to the second position. Once the acting force is released, the elastic member 209 will immediately push the locking bolt 208 back to the first position. This automatic reset feature greatly simplifies the locking operation, so that the operator only needs to focus on the unlocking action.

[0097] By adding the elastic member 209 between the valve body 10 and the locking bolt 208, the automatic reset function of the locking bolt 208 is achieved, and the locking bolt 208 has the self-locking feature. Not only does this simplify the operation process and improve the operation convenience, but it also effectively prevents the loosening problem caused by vibration during the operation of the equipment, and significantly improves the reliability and safety of the structure.

[0098] Referring to Figure 2 In an embodiment of the present application, the valve head includes a glue inlet seat 202, a glue storage seat 203, and a glue outlet head 204, and the top surface of the valve head seat 201 is provided with an assembly groove, and the glue inlet seat 202 and the glue storage seat 203 are embedded in the assembly groove. The glue inlet seat 202 extends in the horizontal direction, and one end of the glue inlet seat 202 is connected with the glue storage seat 203, and the other end of the glue inlet seat 202 extends outside the valve body 10 and can be connected with an external glue supply device 40 to provide glue through the glue supply device 40. The glue outlet head 204 is located below the valve head seat 201 and is connected with the glue storage seat 203, and the striker assembly extends into the glue storage seat 203 to extrude the glue in the glue storage seat 203 from the glue outlet head 204.

[0099] In actual application, the glue provided by the glue supply device 40 flows into the glue storage seat 203 through the glue inlet seat 202, and when the striker assembly reciprocates up and down in the glue storage seat 203, the glue in the glue storage seat 203 can be accurately extruded through the glue outlet head 204, achieving precise glue dispensing control.

[0100] In addition, the valve head adopts a modular combination structure, and the convenience of assembly and maintenance is fully considered. Since the glue inlet seat 202 and the glue storage seat 203 are embeddedly installed, when cleaning or replacement is required, the glue inlet seat 202 and the glue storage seat 203 can be conveniently disassembled and reinstalled. Meanwhile, the modular design facilitates replacement of different specifications of the glue outlet head 204 according to different glue dispensing requirements, and the adaptability of the equipment is improved.

[0101] Referring to Figure 2 As shown in the drawings, in an embodiment of the present application, the valve head further comprises a locking sleeve 205, which is sleeved on the glue outlet head 204 and is threadedly connected with the glue storage seat 203, so as to seal and connect the glue outlet head 204 to the bottom of the glue storage seat 203. In this way, the glue outlet head 204 is locked and fixed by the locking sleeve 205, so that the installation and disassembly of the glue outlet head 204 are more convenient and simple, and meanwhile, the connection between the glue outlet head 204 and the glue storage seat 203 is reliable.

[0102] The glue dispensing equipment according to the embodiment of the present application has the straight-down quick-disassembly type double piezoelectric ceramic glue dispensing valve device as described above.

[0103] The glue dispensing equipment according to the embodiment of the present application has the straight-down quick-disassembly type double piezoelectric ceramic glue dispensing valve device as described above, so that the glue dispensing precision and reliability are higher, and meanwhile, the performance decay problem of the return spring is overcome, and the stability of glue dispensing is maintained. In addition, the quick replacement or maintenance function of the valve head is realized, the applicability of the equipment is improved, and the purpose of quickly replacing or maintaining the valve head under different glue dispensing requirements can be met.

[0104] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0105] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A direct-acting quick-release double piezoelectric ceramic dispensing valve device, characterized in that, The utility model provides a valve head piece, the valve head piece includes valve head seat, valve head and plunger assembly, the valve head seat can pivotably connect in the bottom of valve body, the valve head can detachably be equipped on the valve head seat, the plunger assembly can slide in the valve head along the up and down direction, piezoelectric drive mechanism is equipped in the valve chamber for driving the plunger assembly extrudes colloid in the valve head downward movement, the piezoelectric drive mechanism includes drive rod, first piezoelectric ceramic stack and second piezoelectric ceramic stack, the drive rod is pivotably equipped in the valve chamber around a pivot point, the first piezoelectric ceramic stack drives the drive rod rotates upwards around the pivot point, the second piezoelectric ceramic stack drives the drive rod rotates downwards around the pivot point, so that the drive rod drives the plunger assembly extrudes colloid in the up and down reciprocating rotation of the plunger assembly up and down movement. The drive rod has an action end and a reset end, the pivot point is located between the action end and the reset end, the action end is adjacent to the upper end of the plunger, The lower end of the first piezoelectric ceramic stack is abutted with the reset end on the drive rod, the lower end of the second piezoelectric ceramic stack is abutted with the pressure point on the drive rod, the pressure point is located between the action end and the pivot point. The bottom surface of the drive rod is provided with a circular arc groove at the position of the pivot point, the bottom of the valve chamber is provided with a cylindrical pin, the cylindrical pin is located below the drive rod and is rotationally matched with the circular arc groove, The first piezoelectric ceramic stack and the second piezoelectric ceramic stack are located above the drive rod and are respectively located on both sides of the pivot point.

2. The direct-acting quick-release double piezoelectric dispensing valve device according to claim 1, wherein, The reset end of the drive rod is spaced apart from a first protruding portion and a second protruding portion, the first protruding portion is located at the end of the reset end, the second protruding portion is located at the pressure point, the top surface of the first protruding portion and the second protruding portion is arc surface, The lower end of the first piezoelectric ceramic stack has a first concave arc groove abutted with the first protruding portion, the lower end of the second piezoelectric ceramic stack has a second concave arc groove abutted with the second protruding portion.

3. The direct-acting quick-release double piezoelectric dispensing valve device according to claim 2, characterized in that, The valve head piece further includes a locking member, the valve head seat is a strip-shaped structure, one end of the valve head seat is pivotally connected with the valve body through a pivot shaft, the locking member is used to lock and fix the other end of the valve head seat with the valve body when the valve head seat is rotated to the bottom of the valve body. The locking member is a locking bolt, the locking bolt is arranged on the valve body and can slide between a first position and a second position in the horizontal direction, 4. The direct-acting quick-release double piezoelectric dispensing valve device according to claim 2, wherein, The other end of the valve head seat has an open groove, the open groove is open to one side of the valve body to form an opening, when the locking bolt is located at the first position, the locking bolt is stopped in the open groove, so that the valve head seat and the valve body are locked and fixed, when the locking bolt slides from the first position to the second position, the locking bolt slides out of the open groove from the opening, so that the valve head seat is unlocked. A resilient member is further arranged between the valve body and the locking bolt, the resilient member provides a resilient force to force the locking bolt to be always in the first position.

5. The direct-acting quick-release valve device according to claim 1, wherein, ​ 6. The direct-acting quick-release double piezoelectric dispensing valve device according to claim 5, wherein, ​ ​ 7. The direct-acting quick-release double piezoelectric dispensing valve apparatus according to claim 6, wherein, ​ 8. The direct-acting quick-release valve device according to claim 1, wherein, The valve head comprises a glue inlet seat, a glue storage seat and a glue outlet head, the top surface of the valve head seat is provided with an assembly groove, and the glue inlet seat and the glue storage seat are embedded in the assembly groove; the glue inlet seat extends in the horizontal direction, one end of the glue inlet seat is connected with the glue storage seat, and the other end of the glue inlet seat extends outside the valve body; the glue outlet head is located below the valve head seat and is connected with the glue storage seat, and the striker assembly extends into the glue storage seat to extrude the glue in the glue storage seat from the glue outlet head.

9. The direct-acting quick-release double piezoelectric dispensing valve device according to claim 8, characterized in that, The valve head further comprises a locking sleeve, the locking sleeve is sleeved on the glue outlet head and is threadedly connected with the glue storage seat, so as to sealingly connect the glue outlet head to the bottom of the glue storage seat.

10. A dispensing device, characterized in that, The valve head further comprises a locking sleeve, the locking sleeve is sleeved on the glue outlet head and is threadedly connected with the glue storage seat, so as to sealingly connect the glue outlet head to the bottom of the glue storage seat. A direct-down quick-release double piezoelectric ceramic glue dispensing valve device having any one of claims 1 to 9.

Images