Quick-release piezoelectric injection valve

Abstract

The application relates to a quick-release piezoelectric jet valve. The quick-release piezoelectric jet valve comprises a locking assembly, a glue spraying assembly and a liquid box assembly; the locking assembly is movably connected to the glue spraying assembly; the liquid box assembly is detachably connected to the locking assembly; the liquid box assembly comprises a liquid box locking part and a liquid storage part; the liquid box locking part is screwed to the locking assembly; the locking assembly comprises an adjusting block, an adjusting seat, a switch shaft pin and a fastening pin; a gradually deepened locking groove is formed in the outer surface of the switch shaft pin; the adjusting seat comprises a base locking part; in the locking state of the liquid box assembly, the base locking part and the liquid box locking part are interlocked; one end of the fastening pin is abutted against the shallowest end of the locking groove, and the other end of the fastening pin is abutted against the liquid box assembly. The quick-release piezoelectric jet valve provided by the application is disassembled and assembled by the interlocking of the locking claws and the insertion and locking of the fastening pin, the disassembling and assembling method is very simple, the production efficiency is improved, and the stability of the piezoelectric jet valve can be ensured.

Description

Technical Field

[0001] This invention relates to the field of dispensing equipment, and in particular to a quick-release piezoelectric jet valve. Background Technology

[0002] To ensure the performance and lifespan of the piezoelectric jet valve, cleaning and maintenance are required after dispensing. During cleaning and maintenance, the valve body must first be removed from the machine, and then the liquid tank must be removed to clean the flow channels. To achieve this, most commercially available piezoelectric jet valves use a detachable connection between the liquid tank assembly and the valve body. However, the detachable structures between the liquid tank assembly and the valve body in current piezoelectric jet valves are generally quite complex, with complicated connection methods, and require complex calibration procedures after reinstallation. This results in lower stability of the piezoelectric jet valve. Summary of the Invention

[0003] Based on this, the purpose of the present invention is to provide a quick-release piezoelectric injection valve, which uses a combination of locking claw interlocking and fastening pin insertion locking to disassemble and assemble the liquid box assembly. The disassembly and assembly method is very simple, which improves production efficiency and ensures the stability of the piezoelectric injection valve.

[0004] A quick-release piezoelectric injection valve includes: a locking assembly, a spraying assembly, and a liquid reservoir assembly; the locking assembly is movably connected to the spraying assembly; the liquid reservoir assembly is detachably connected to the locking assembly; the liquid reservoir assembly includes a liquid reservoir locking part and a liquid storage part; the liquid reservoir locking part and the liquid storage part are integrated; the liquid reservoir locking part is screwed onto the locking assembly; the spraying assembly includes a valve body, a movable striker, and a nozzle; the valve body includes a piezoelectric ceramic and a lever part that abut against each other; the lever part is contactably disposed above the movable striker, and the movable striker inserts into... Located in the liquid storage section, directly opposite the nozzle; the locking assembly includes an adjusting block, an adjusting seat, a switch pin, and a fastening pin; the switch pin is rotatably clamped between the adjusting block and the adjusting seat; a gradually deepening locking groove is formed on the outer surface of the switch pin; the fastening pin is movably disposed inside the adjusting seat; the adjusting seat includes a base locking part disposed inside the valve body; in the liquid box assembly locked state, the base locking part and the liquid box locking part interlock and lock; one end of the fastening pin abuts against the shallowest end of the locking groove, and the other end of the fastening pin abuts against the liquid box assembly.

[0005] The present invention provides a quick-release piezoelectric injection valve, which uses a combination of locking claw interlocking and fastening pin insertion to disassemble and assemble the liquid box assembly. The disassembly and assembly method is very simple, which improves production efficiency and ensures the stability of the piezoelectric injection valve.

[0006] Furthermore, the liquid box locking part is provided with a number of spaced fixing recesses; when the liquid box assembly is locked, the fixing recesses abut against the fastening pins.

[0007] Furthermore, the locking assembly also includes an adjusting screw; the adjusting screw is inserted into the valve body; one end of the adjusting screw protrudes from the valve body, and the other end is screwed into the base locking part. By adjusting the adjusting screw, the locking assembly and the liquid box assembly can be moved up and down relative to the valve body, thereby adjusting the distance between the movable striker and the nozzle.

[0008] Furthermore, the base locking part includes a base limiting boss and a number of spaced-apart base locking claws; the liquid box locking part includes a liquid box limiting boss and a number of spaced-apart liquid box locking claws; in the liquid box assembly locked state, the liquid box locking claws are tightly engaged between the base locking claws and the base limiting boss.

[0009] Furthermore, the gap between two adjacent base locking claws is greater than the width of the liquid tank locking claw; the gap between two adjacent liquid tank locking claws is greater than the width of the base locking claw, thereby enabling staggered installation and removal of the liquid tank locking claw and the base locking claw.

[0010] Furthermore, the adjusting seat also includes a pin fixing part connected to the base locking part; the pin fixing part has a pin hole for receiving a fastening pin; the diameter of the pin hole at the end near the fixing recess is smaller than the diameter of the fastening pin, to prevent the fastening pin from excessively squeezing the liquid box locking part, causing the movable striker to bend, thereby preventing the glue from being sprayed smoothly.

[0011] Furthermore, the shaft pin fixing part is also provided with a baffle; the liquid storage part is provided with a stop protrusion; the baffle can rotate to abut against the stop protrusion, and when the baffle abuts against the stop protrusion, the base locking claw and the liquid box locking claw are misaligned, and the liquid box assembly can be removed downwards.

[0012] Furthermore, the valve body includes a piezoelectric ceramic and a lever portion; the lever portion includes a crossbar and a fixed striker; the crossbar is perpendicularly abutted against the piezoelectric ceramic; the pin cap end of the fixed striker is adjustablely fixed to the tail end of the crossbar; one end of the fixed striker is positioned directly above the pin cap of the movable striker, and the distance between the fixed striker and the movable striker is adjusted by adjusting the relative position of the fixed striker at the tail end of the crossbar.

[0013] Furthermore, the lever part also includes a bushing sleeved outside the fixed firing pin; the bushing sleeve is fixed to the inner cavity of the base locking part to prevent the fixed firing pin from wobbling left and right.

[0014] Furthermore, the liquid reservoir also includes a heating rod and a temperature sensor for heating the adhesive, making the flow and spraying of the adhesive smoother.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1An exploded view of the quick-release piezoelectric injection valve provided in the embodiments of this application;

[0017] Figure 2 A perspective view of a quick-release piezoelectric injection valve provided in an embodiment of this application;

[0018] Figure 3 A cross-sectional view of a quick-release piezoelectric injection valve provided in an embodiment of this application;

[0019] Figure 4 for Figure 3 Enlarged view of a portion (I);

[0020] Figure 5 A 3D view of the locking assembly;

[0021] Figure 6 This is a cross-sectional view of the locking assembly;

[0022] Figure 7 This is a schematic diagram showing the locking state of the fastening pin;

[0023] Figure 8 This is a diagram showing the fastening pin in the loosened state.

[0024] Among them, 10-locking assembly; 11-adjusting block; 111-first shaft pin groove; 112-positioning hole; 12-adjusting seat; 121-base locking part; 1211-base locking claw; 1212-base limiting boss; 1213-fire pin fixing cavity; 122-shaft pin fixing part; 1221-second shaft pin groove; 1222-pin hole; 1223-baffle; 1224-blocking surface; 123-positioning post; 13-adjusting screw; 14-switch shaft pin; 141-locking groove; 15-fastening pin; 151-arc-shaped boss; 20-adhesive spraying assembly; 21-valve body; 21 1-Piezoelectric ceramic; 212-Lever part; 2121-Cross bar; 2122-Rotating shaft; 2123-Fixed striker; 2124-First return spring; 2125-Busset; 22-Modible striker; 23-Fixed inner cylinder; 24-Second return spring; 25-Sealing ring; 26-Nozzle; 27-Nozzle fixing part; 30-Liquid tank assembly; 31-Liquid tank locking part; 311-Liquid tank locking claw; 312-Liquid tank limiting boss; 313-Fixed recess; 32-Liquid storage part; 321-Flow channel; 322-Liquid storage cavity; 323-Stop protrusion; 326-Glue inlet. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Please see Figure 1-8 This application provides a quick-release piezoelectric injection valve, including a locking assembly 10, an adhesive spraying assembly 20, and a liquid tank assembly 30. The locking assembly 10 is movably connected to the adhesive spraying assembly 20; the liquid tank assembly 30 is rotatably connected to the locking assembly 10.

[0029] Please see Figure 1-8 The adhesive spraying assembly 20 includes a valve body 21, a movable striking pin 22, a nozzle 26, and a nozzle holder 27 for accommodating the nozzle 26. The valve body 21 includes a piezoelectric ceramic 211 and a lever portion 212; wherein the piezoelectric ceramic 211, lever portion 212, movable striking pin 22, nozzle 26, and nozzle holder 27 are arranged sequentially; the nozzle holder 27 is connected to the liquid box assembly 30. The lever portion 212 includes a crossbar 2121 and a rotating shaft 2122 fixedly disposed at one end of the crossbar 2121; when the crossbar 2121 is impacted, it rotates around the rotating shaft 2122. The end of the piezoelectric ceramic 211 is positioned directly opposite the crossbar 2121; the tail end of the crossbar 2121 is positioned directly opposite the cap end of the movable striking pin 22; the tip end of the movable striking pin 22 is positioned directly opposite the nozzle 26. The nozzle holder 27 has a through hole, and the nozzle 26 is positioned directly opposite this through hole. When the piezoelectric ceramic 211 is connected to an electrical signal, it deforms and impacts the lever part 212; the lever part 212 moves due to the impact, and the end of the lever part 212 impacts one end of the cap of the movable striker 22; the tip of the movable striker 22 impacts the adhesive above the nozzle 26, causing the adhesive to be sprayed out from the nozzle 26.

[0030] Furthermore, the lever portion 212 may also include a fixed striking pin 2123 screwed to the end of the crossbar 2121. The fixed striking pin 2123 is positioned above the movable striking pin 22. When the crossbar 2121 is struck by the piezoelectric ceramic 211, it rotates around the pivot 2122; the rotation of the crossbar 2121 causes the fixed striking pin 2123 to strike the movable striking pin 22. When the movable striking pin 22 is replaced with one of different lengths, the relative position of the fixed striking pin 2123 and the movable striking pin 22 can be adjusted by adjusting the fixed striking pin 2123 up and down. This design increases the applicability of the piezoelectric injection valve.

[0031] Furthermore, the lever portion 212 also includes a bushing 2125 fixedly disposed inside the valve body 21 and a first return spring 2124 disposed inside the bushing 2125; the first return spring 2124 is sleeved on the outside of the fixed striker 2123 and is used to pull the reciprocating motion of the fixed striker 2123. The bottom of the bushing 2125 has a through hole, one end of the fixed striker 2123 can pass through the through hole to strike one end of the cap of the movable striker 22; or one end of the cap of the movable striker 22 can make contact with the fixed striker 2123 through the through hole. In order to limit the bushing 2125, in this embodiment, two positioning posts 123 are fixedly disposed on the valve body 21. The two positioning posts 123 are closely disposed below the flange portion of the bushing 2125, thereby preventing the bushing 2125 from moving downward under the pressure of the spring, thereby realizing that the bushing 2125 supports the first return spring 2124 to pull the fixed striker 2123 to reciprocate up and down.

[0032] Furthermore, the adhesive spraying assembly 20 also includes a fixed inner cylinder 23 and a second return spring 24 disposed inside the fixed inner cylinder 23. The top of the fixed inner cylinder 23 abuts against the bushing 2125. The movable striker 22 is inserted into the fixed inner cylinder 23. The second return spring 24 is sleeved on the outside of the movable striker 22 and is used to pull the reciprocating motion of the movable striker 22.

[0033] Furthermore, in order to facilitate manual adjustment of the relative position between the nozzle 26 and the movable striker 22, the nozzle fixing member 27 can be an adjusting nut 27. The adjusting nut 27 is screwed onto the liquid tank assembly 30, and the relative position between the nozzle 26 and the movable striker 22 can be adjusted by turning the adjusting nut 27 up and down.

[0034] Please see Figure 1-8The locking assembly 10 is adjustablely connected to the adhesive spraying assembly 20. The locking assembly 10 includes: an adjusting block 11, an adjusting seat 12, a switch shaft pin 14, a fastening pin 15, and an adjusting screw 13. The adjusting block 11 is detachably mounted on one side of the adjusting seat 12; the switch shaft pin 14 is rotatably clamped between the adjusting block 11 and the adjusting seat 12; the fastening pin 15 is inserted inside the adjusting seat 12 and abuts against the switch shaft pin 14; the adjusting screw 13 is screwed onto the adjusting seat 12 and connects the adjusting seat 12 to the valve body 21. By adjusting the adjusting screw 13, the adjusting seat 12 can be finely adjusted up and down relative to the valve body 21. Furthermore, the locking assembly 10 is also provided with several fixing posts, which are used to clamp the adjusting seat 12 and prevent the adjusting seat 12 from wobbling left and right relative to the valve body 21.

[0035] The adjusting block 11 has a first shaft pin groove 111 and a positioning hole 112; the first shaft pin groove 111 is used to accommodate the switch shaft pin 14; the positioning hole 112 is used to determine the relative position of the adjusting block 11 and the valve body 21.

[0036] The adjusting seat 12 includes a base locking part 121 and a shaft pin fixing part 122; the top end of the base locking part 121 is screwed to the adjusting screw 13; the base locking part 121 has a striker fixing cavity 1213, which is used to accommodate the fixed striker 2123 and the bushing 2125. The inner wall of the base locking part 121 is provided with a base limiting boss 1212 and a plurality of base locking claws 1211 arranged in a circle at intervals, for locking the liquid box assembly 30. The shaft pin fixing part 122 has a second shaft pin groove 1221 and a pin hole 1222 communicating with the second shaft pin groove 1221; the second shaft pin groove 1221 is assembled with the first shaft pin groove 111 to accommodate the switch shaft pin 14; the pin hole 1222 is arranged perpendicular to the second shaft pin groove 1221 to accommodate the fastening pin 15. The diameter of the pin hole 1222 at the end away from the second shaft pin groove 1221 is smaller than the diameter of the fastening pin 15, which is used to limit the movement stroke of the fastening pin 15.

[0037] The switch pin 14 is rotatably clamped between the first pin groove 111 and the second pin groove 1221. A locking groove 141 is formed on the outer surface of the switch pin 14 along the rotation direction; the depth of the locking groove 141 gradually increases from the starting end to the ending end. One end of the fastening pin 15 abuts against the locking groove 141, and as the switch pin 14 rotates, the fastening pin 15 slides in the locking groove 141; and due to the squeezing action of the switch pin 14, the fastening pin 15 moves in the pin hole 1222. When the switch pin 14 rotates from... Figure 8 Rotate the state to Figure 7 When the lock groove 141 is in the state of contact with the fastening pin 15, the contact part slides from the deepest end of the lock groove 141 to the shallowest beginning end of the lock groove 141, and the fastening pin 15 is squeezed by the lock groove 141 and moves to the right in the pin hole 1222.

[0038] Please see Figure 1-8 The liquid tank assembly 30 is detachably connected to the locking assembly 10. The liquid tank assembly 30 includes a liquid tank locking part 31 and a liquid storage part 32. The liquid tank locking part 31 and the liquid storage part 32 are designed as a single unit.

[0039] The liquid tank locking part 31 is inserted into the base locking part 121 and rotated to engage with it. The liquid tank locking part 31 is a hollow cylindrical shape, and the fixed inner cylinder 23 is fixed inside the liquid tank locking part 31. The outer wall of the liquid tank locking part 31 is provided with a plurality of liquid tank locking claws 311 and liquid tank limiting protrusions 312 arranged at intervals. In the locked state of the liquid tank assembly 30, the liquid tank locking claws 311 are directly above the base locking claws 1211 and are tightly engaged between the base locking claws 1211 and the base limiting protrusions 1212. The liquid tank locking part 31 is provided with liquid tank limiting protrusions 312 with beveled surfaces at a certain interval from the liquid tank locking claws 311, and the base locking claws 1211 are tightly engaged between the liquid tank locking claws 311 and the liquid tank limiting protrusions 312. Understandably, the distance between two adjacent liquid tank locking claws 311 is greater than the width of the base locking claw 1211; similarly, the distance between two adjacent base locking claws 1211 is greater than the width of the liquid tank locking claw 311, so that the liquid tank locking claw 311 and the base locking claw 1211 can lock together. The liquid tank locking part 31 is inserted into the base locking part 121, and the liquid tank locking claw 311 passes through the gap between the base locking claws 1211 to abut against the base limiting boss 1212. Then, the liquid tank assembly 30 is rotated, so that the originally staggered liquid tank locking claws 311 rotate until they are completely locked between the base locking claw 1211 and the base limiting boss 1212. Furthermore, the liquid tank locking part 31 is also provided with mutually spaced fixing recesses 313, which abut against the fastening pin 15 in the locked state.

[0040] The liquid storage section 32 is provided with an injection port 326, which is connected to an external adhesive tube. The liquid storage section 32 has a flow channel 321 and a storage chamber 322 inside, with the flow channel 321 connecting the injection port 326 and the storage chamber 322. The storage chamber 322 is located below the liquid box locking part 31 and communicates with it. The movable striking pin 22 is inserted into the fixed inner cylinder 23 and passes through the storage chamber 322, facing the nozzle 26. Furthermore, a sealing ring 25 can be provided between the fixed inner cylinder 23 and the storage chamber 322 to prevent adhesive from entering the liquid box locking part 31 and the inner cavity of the valve body 21.

[0041] In addition, the liquid storage section 32 is also equipped with a heating rod and a temperature sensor. The heating rod is used to heat the adhesive liquid, and the temperature sensor is used to sense and control the heating temperature.

[0042] Furthermore, a stop protrusion 323 is provided on the side of the liquid storage section 32 near the adjusting seat 12 for rotational positioning. Correspondingly, a baffle 1223 is provided on one side of the adjusting seat 12. When the liquid box assembly 30 rotates at a certain angle, the stop protrusion 323 contacts the baffle 1223. At this time, the base locking claw 1211 is tightly engaged with the liquid box locking claw 311 in a mutually offset state. It can be understood that in some other embodiments, the adjusting seat 12 may also be provided with a second baffle 1223 for foolproof positioning. When the liquid box assembly 30 rotates to the position where the stop protrusion 323 contacts the second baffle 1223, the fixing recess 313 and the fastening pin 15 are collinear. At this time, rotating the switch shaft pin 14 causes the locking groove 141 to press the fastening pin 15, causing the fastening pin 15 to move towards the fixing recess 313 in the pin hole 1222 until it completely abuts the fixing recess 313, thus completing the locking of the liquid box assembly 30.

[0043] See below. Figure 1-8 The quick-release piezoelectric injection valve provided in this application will be described in conjunction with specific embodiments.

[0044] The valve body 21 contains a piezoelectric ceramic 211, a crossbar 2121, and a fixed striker 2123. The crossbar 2121 is located directly below the piezoelectric ceramic 211. One end of the crossbar 2121 has a rotating shaft 2122. The fixed striker 2123 is vertically and rotatably fixed to the other end of the crossbar 2121 by a locking block. A first return spring 2124 is sleeved on the outside of the fixed striker 2123. A bushing 2125 with a through hole is sleeved on the outside of the first return spring 2124. A movable striker 22 is located directly below the fixed striker 2123. A second return spring 24 is sleeved on the outside of the movable striker 22. A fixed inner cylinder 23 is sleeved on the outside of the second return spring 24.

[0045] The liquid container assembly 30 includes a liquid container locking part 31 and a liquid storage part 32. The liquid storage part 32 has a liquid storage chamber 322, an injection port 326, and a flow channel 321 connecting the liquid storage chamber 322 and the injection port 326. The liquid container locking part 31 is sleeved on the outside of the fixed inner cylinder 23; the bottom of the fixed inner cylinder 23 is fixed to the top of the liquid storage chamber 322 and communicates with the liquid storage chamber 322. A sealing gasket is provided between the fixed inner cylinder 23 and the liquid storage chamber 322, and the movable striking pin 22 passes through the sealing gasket and the liquid storage chamber 322 in sequence, with the tip of the movable striking pin 22 facing the nozzle 26. An adjusting nut 27 is provided on the outside of the nozzle 26 and is screwed onto the outer wall of the liquid storage chamber 322.

[0046] The locking assembly 10 includes an adjusting block 11, an adjusting seat 12, a switch shaft pin 14, a fastening pin 15, and an adjusting screw 13. One end of the adjusting seat 12 is rotatably fixed to the valve body 21 via the adjusting screw 13. The adjusting seat 12 is provided with a base locking part 121; the base locking part 121 has a firing pin fixing cavity 1213, and the side wall of the firing pin fixing cavity 1213 has two symmetrical cuts. Two positioning posts 123 are symmetrically arranged above and below each cut. The positioning posts 123 clamp the firing pin fixing cavity 1213 to prevent the firing pin fixing cavity 1213 from wobbling left and right. The positioning posts 123 located above and below the cuts maintain a certain distance from the upper and lower ends of the cuts, respectively, allowing the adjusting seat 12 to move up and down within this distance range. The bushing 2125 is also clamped between the two lower positioning posts 123.

[0047] The adjusting block 11 is provided with a first shaft pin groove 111 and a positioning hole 112. A column is provided, one end of which is inserted into the positioning hole 112 and the other end of which is inserted into the valve body 21, to fix the relative position of the adjusting block 11 and the valve body 21. The adjusting seat 12 is also provided with a shaft pin fixing part 122, which is provided with a second shaft pin groove 1221 and a pin hole 1222. The adjusting block 11 is locked to the adjusting seat 12 with screws. After the adjusting block 11 and the adjusting seat 12 are locked, the first shaft pin groove 111 and the second shaft pin groove 1221 close to form an accommodating space. The switch shaft pin 14 is disposed in the accommodating space and can rotate within the accommodating space. The fastening pin 15 is inserted into the pin hole 1222; one end of the fastening pin 15 is a convex arc-shaped end face that abuts against the locking groove 141; the other end of the fastening pin 15 is an arc-shaped boss 151, which passes through the end of the pin hole 1222 and abuts against the fixing recess 313. It should be noted that the maximum cross-sectional diameter of the arc-shaped boss 151 is smaller than the cross-sectional diameter of the fastening pin 15; a blocking surface 1224 is provided at the end of the pin hole 1222, and the diameter of the blocking surface 1224 is smaller than the diameter of the pin hole 1222. In this embodiment, the adjusting block 11 is marked with an "ON" position on the outside of the first shaft pin groove 111; the adjusting seat 12 is marked with an "OFF" position on the outside of the second shaft pin groove 1221.

[0048] The inner wall of the base locking part 121 is also provided with a base limiting boss 1212 and a plurality of base locking claws 1211 arranged at intervals in a ring. The outer wall of the liquid tank locking part 31 is provided with a plurality of liquid tank locking claws 311 and liquid tank limiting bosses 312 arranged at intervals in a ring. The liquid tank locking claws 311 are arranged opposite to the base locking claws 1211; the liquid tank locking claws 311 are tightly fastened between the base locking claws 1211 and the base limiting bosses 1212; the base locking claws 1211 are tightly fastened between the liquid tank locking claws 311 and the liquid tank limiting bosses 312.

[0049] Before assembling the liquid box assembly 30, the valve body 21 and the locking assembly 10 are assembled according to the above-mentioned relative positions. The fixed striker 2123 is screwed to the end of the crossbar 2121 with a locking block. The locking position of the fixed striker 2123 is adjusted according to the size of the selected movable striker 22.

[0050] When assembling the liquid box assembly 30, first rotate the switch shaft pin 14 to the "ON" position. At this time, one end of the fastening pin 15 is aligned with the end of the locking groove 141, and the other end of the fastening pin 15 is in the pin hole 1222.

[0051] A sealing ring is installed at the upper port of the liquid storage chamber 322. The fixed inner cylinder 23 is fixed to the liquid box locking part 31, with the fixed inner cylinder 23 abutting against the top of the liquid storage chamber 322. The second return spring 24 is sleeved on the movable striker 22. Then, the movable striker 22 is inserted into the fixed inner cylinder 23 and passes through the liquid storage chamber 322. Subsequently, the nozzle 26 is installed at the lower port of the liquid storage chamber 322, and an adjusting nut 27 is fitted onto the outside, fixing the adjusting nut 27 to the outer wall of the liquid storage chamber 322.

[0052] Insert the liquid tank locking part 31 into the base locking part 121, then rotate the liquid tank locking part 31 until the stop protrusion 323 contacts the baffle 1223. At this time, the liquid tank locking claw 311 and the base locking claw 1211 are offset from each other. Continue to push the liquid tank locking part 31 upward until it abuts the base limiting boss 1212. Then rotate the liquid tank assembly 30 until the center line of the liquid tank assembly 30 is coplanar with that of the locking assembly 10. At this time, the liquid tank locking claw 311 is tightly locked between the base limiting boss 1212 and the base locking claw 1211, and the base locking claw 1211 is tightly locked between the liquid tank locking claw 311 and the liquid tank limiting boss 312. The liquid tank assembly 30 is locked in the locking assembly 10.

[0053] Rotate the switch shaft pin 14, and the locking groove 141 slides relative to the fastening pin 15. When rotated to the "OFF" state, the fastening pin 15 is pressed towards the fixed recess 313 and finally abuts against the fixed recess 313, completing the further locking of the liquid box assembly 30.

[0054] After the liquid box assembly 30 is locked, rotate the adjusting nut 27 to initially adjust the relative position between the nozzle 26 and the movable striker 22, and then fine-tune it by adjusting the adjusting screw 13. The calibration process is very simple.

[0055] When disassembling the liquid tank assembly 30, rotate the switch pin 14 clockwise to the "ON" position. The terminating end of the locking groove 141 rotates to a position close to the fastening pin 15. At this time, there is a certain gap between the fastening pin 15 and the terminating end of the locking groove 141, and the fastening pin 15 is released from the pressure of the switch pin 14. Rotate the liquid tank assembly 30, and the fixing recess 313 rotates accordingly, squeezing the fastening pin 15 out of the fixing recess 313 and moving it towards the switch pin 14. At this time, the locking state of the fastening pin 15 on the liquid tank assembly 30 is released.

[0056] Continue rotating the liquid box assembly 30 until the stop protrusion 323 contacts the baffle 1223. At this time, the liquid box locking claw 311 and the base locking claw 1211 are offset from each other. Vertically remove the liquid box assembly 30 to complete the disassembly of the liquid box assembly 30.

[0057] After the liquid tank assembly 30 is disassembled, the movable striker 22 can be directly removed from the liquid tank assembly 30, and the nozzle 26 can be removed by loosening the adjusting nut 27. The liquid tank assembly 30 can then be cleaned and the movable striker 22 and nozzle 26 can be replaced.

[0058] Compared to existing technologies, the advantages of the quick-release piezoelectric injection valve provided in this application are as follows: It combines locking claw interlocking and fastening pin locking methods for disassembling and assembling the liquid tank, resulting in a simple structure and extremely convenient disassembly and assembly method, requiring no external auxiliary tools; this improves production efficiency while ensuring the stability of the piezoelectric injection valve. Secondly, by setting a fixed striker, the relative position of the lever and the movable striker can be flexibly adjusted, better matching various models of movable strikers and improving the applicability of the piezoelectric injection valve. Furthermore, by adjusting the adjusting screw, rapid and accurate calibration can be achieved after disassembly and assembly.

[0059] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and the present invention also intends to include these modifications and variations.

Claims

1. A quick-release piezoelectric injection valve, characterized in that, include: Locking assembly, adhesive spraying assembly, and liquid cartridge assembly; The locking assembly is movably connected to the adhesive spraying assembly; The liquid tank assembly is detachably connected to the locking assembly; The liquid tank assembly includes an integrally formed liquid tank locking part and a liquid storage part; the liquid tank locking part is screwed onto the locking assembly; The adhesive spraying assembly includes a valve body, a movable striker, and a nozzle; the valve body includes a piezoelectric ceramic and a lever portion that abut against each other; the lever portion is tangibly disposed above the movable striker, and the movable striker is inserted into the liquid reservoir and positioned directly opposite the nozzle; The locking assembly includes an adjusting block, an adjusting seat, a switch pin, and a fastening pin; the switch pin is rotatably clamped between the adjusting block and the adjusting seat; a gradually deepening locking groove is formed on the outer surface of the switch pin; the fastening pin is movably disposed inside the adjusting seat; the adjusting seat includes a base locking part disposed inside the valve body; When the liquid tank assembly is locked, the base locking part and the liquid tank locking part are locked together; one end of the fastening pin abuts against the shallowest end of the locking groove, and the other end of the fastening pin abuts against the liquid tank assembly.

2. The quick-release piezoelectric injection valve according to claim 1, characterized in that: The liquid box locking part is provided with a number of spaced fixing recesses; when the liquid box assembly is locked, the fixing recesses abut against the fastening pins.

3. The quick-release piezoelectric injection valve according to claim 2, characterized in that: The locking assembly further includes an adjusting screw; the adjusting screw is inserted into the valve body; one end of the adjusting screw protrudes from the valve body, and the other end is screwed to the base locking part.

4. The quick-release piezoelectric injection valve according to claim 3, characterized in that: The base locking part includes a base limiting boss and a plurality of spaced-apart base locking claws; the liquid box locking part includes a liquid box limiting boss and a plurality of spaced-apart liquid box locking claws; in the liquid box assembly locked state, the liquid box locking claws are tightly engaged between the base locking claws and the base limiting boss, and the base locking claws are tightly engaged between the liquid box locking claws and the liquid box limiting boss.

5. The quick-release piezoelectric injection valve according to claim 4, characterized in that: The spacing between two adjacent base locking claws is greater than the width of the liquid tank locking claw; the spacing between two adjacent liquid tank locking claws is greater than the width of the base locking claw.

6. The quick-release piezoelectric injection valve according to claim 5, characterized in that: The adjusting seat also includes a pin fixing part connected to the locking part of the base; the pin fixing part has a pin hole for accommodating a fastening pin; the diameter of the pin hole at the end near the fixing recess is smaller than the diameter of the fastening pin.

7. The quick-release piezoelectric injection valve according to claim 6, characterized in that: The pin fixing part is also provided with a baffle; the liquid storage part is provided with a stop protrusion; the baffle can rotate to abut against the stop protrusion.

8. The quick-release piezoelectric injection valve according to claim 7, characterized in that: The lever includes a crossbar and a fixed striker; the crossbar is perpendicularly abutted against the piezoelectric ceramic; the cap end of the fixed striker is adjustablely fixed to the tail end of the crossbar; one end of the fixed striker is positioned directly above the cap of the movable striker.

9. The quick-release piezoelectric injection valve according to claim 8, characterized in that: The lever portion also includes a bushing sleeved outside the fixed firing pin; the bushing sleeve is fixed to the inner cavity of the base locking portion.

10. The quick-release piezoelectric injection valve according to claim 9, characterized in that: The liquid storage section also includes a heating rod and a temperature sensor.

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