CN217550276U - Locking device for dispensing piezoelectric valve - Google Patents

Abstract

The utility model belongs to the technical field of the fluid point is glued, a locking device for gluing piezoelectric valve is disclosed. The locking device for the dispensing piezoelectric valve comprises a piezoelectric valve body, a liquid box body and a fastening mechanism, wherein the piezoelectric valve body comprises a first clamping tongue and a first mounting groove; the liquid box body comprises a second clamping tongue and a second mounting groove, the second clamping tongue is clamped with the first mounting groove, a positioning groove is formed in one side, opposite to the bottom of the first mounting groove, of the second clamping tongue, and the first clamping tongue is clamped with the second mounting groove; fastening device sets up on the piezoelectric valve body, and fastening device includes locating pin, first elastic component and retaining member, and the locating pin passes through first elastic component and piezoelectric valve body elastic connection, and the constant head tank can be stretched into to the first end of locating pin, and the retaining member is arranged in preventing the first end of locating pin to shift out from the constant head tank. This a locking device for gluing piezoelectric valve has improved the efficiency of dismouting piezoelectric valve, has promoted the dismouting number of times and the life of piezoelectric valve body effectively.

Description

Locking device for dispensing piezoelectric valve

Technical Field

The utility model relates to a technical field is glued to the fluid point, especially relates to a locking device for gluing piezoelectric valve.

Background

One key aspect of the microelectronic packaging industry is the fluid dispensing technique, which affects the development of the packaging industry in terms of speed, quality and handling properties. With the development of microelectronic products toward smaller size, higher performance, lower power consumption and more environmental protection, and the rapid development of 3C (Computer), communication and Consumer Electronics (Consumer Electronics) products, more and more dispensing processes are involved in the electronic manufacturing process, and the dispensing technology requirements are higher and higher.

The piezoelectric valve is directly fixed on a liquid box of the dispensing machine through the hexagon socket head cap screw in the existing dispensing machine, in the dispensing process, the piezoelectric valve is frequently cleaned in order to guarantee the dispensing quality, a customized tool is required to be used to detach the piezoelectric valve from the liquid box of the dispensing machine in the process of detaching the piezoelectric valve, time and labor are wasted in the detaching process, the productivity is influenced, and after the piezoelectric valve is detached and mounted for many times, the hexagon socket head cap screw slides teeth easily, so that the detachment and mounting are difficult.

Therefore, a locking device for a dispensing piezoelectric valve is needed to solve the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a locking device for dispensing piezoelectric valve makes the point piezoelectric valve dismouting more convenient, has improved the efficiency of dismouting.

To achieve the purpose, the utility model adopts the following technical proposal:

a locking device for a dispensing piezoelectric valve, comprising:

the piezoelectric injection mechanism comprises a piezoelectric valve body, wherein the piezoelectric valve body comprises a first clamping tongue and a first mounting groove;

the liquid box mechanism comprises a liquid box body, the liquid box body comprises a second clamping tongue and a second mounting groove, the second clamping tongue is clamped with the first mounting groove, a positioning groove is formed in one side, opposite to the bottom of the first mounting groove, of the second clamping tongue, and the first clamping tongue is clamped with the second mounting groove;

the fastening mechanism is arranged on the piezoelectric valve body and comprises a positioning pin, a first elastic piece and a locking piece, the positioning pin is elastically connected with the piezoelectric valve body through the first elastic piece, the first end of the positioning pin can stretch into the positioning groove, and the locking piece is configured to prevent the first end of the positioning pin from being moved out of the positioning groove.

Optionally, the piezoelectric valve body further includes a first mounting hole, one end of the first elastic element is connected to the positioning pin, and the other end of the first elastic element is connected to the bottom wall of the first mounting hole.

Optionally, the fastening mechanism further includes a limit pin, a waist-shaped limit hole is provided on the limit pin, the limit pin penetrates through the waist-shaped limit hole, and the limit pin is configured to limit a moving distance of the first elastic element driving the limit pin.

Optionally, a first guiding inclined surface is disposed on the second latch, the first end of the positioning pin is hemispherical, and the first guiding inclined surface is configured to facilitate the first end of the positioning pin to slide into the positioning groove.

Optionally, a second guiding inclined surface is disposed on a side wall of the positioning groove, and the second guiding inclined surface is configured to facilitate the first end of the positioning pin to slide out of the positioning groove.

Optionally, the piezoelectric valve body further includes a second mounting hole, the second mounting hole communicates with the first mounting hole, the second end of the positioning pin can extend into the second mounting hole, the locking member is disposed in the second mounting hole in a penetrating manner, and the locking member abuts against the second end of the positioning pin to prevent the first end of the positioning pin from being removed from the positioning groove.

Optionally, the second end of locating pin is provided with third direction inclined plane, be provided with the bulb on the retaining member, third direction inclined plane is configured as conveniently adjusting the retaining member with the butt power of locating pin.

Optionally, the locking device for the dispensing piezoelectric valve further includes a glue outlet, and the glue outlet is connected to the glue outlet pipe of the liquid box body in a sealing manner.

Optionally, the piezoelectric jetting mechanism further includes a striker assembly, the striker assembly includes a striker, a striker protective sleeve and a second elastic member, the striker protective sleeve is disposed on the piezoelectric valve body, a first end of the striker penetrates through the striker protective sleeve and extends into the glue outlet on the liquid cartridge body, a second end of the striker protective sleeve is elastically connected to the striker protective sleeve through the second elastic member, and the striker protective sleeve is provided with an exhaust hole configured to exhaust air in the glue outlet when the piezoelectric valve body is assembled with the liquid cartridge body.

Optionally, a groove is further formed in the liquid box body, the groove is communicated with the rubber outlet pipe, a guide surface is arranged at the lower end of the striker protective sleeve, and the guide surface can be attached to the inner wall of the groove.

Has the beneficial effects that:

this use novel cross setting up piezoelectricity injection mechanism, liquid box mechanism and fastening device, piezoelectricity injection mechanism and liquid box mechanism joint, fastening device sets up on piezoelectricity injection mechanism's piezoelectric valve body, make fastening device's locating pin and piezoelectric valve body elastic connection, set up the constant head tank on the second block tongue of liquid box body, after first block tongue and second mounting groove and second block tongue and the equal joint of first mounting groove, the first end of locating pin can stretch into in the constant head tank, the locking piece through fastening device makes it can not remove with the position locking of locating pin this moment, prevent that the locating pin from shifting out from the constant head tank, just can fix the piezoelectric valve body on the liquid box body, this a locking device for gluing piezoelectric valve has shortened the time of dismouting piezoelectricity injection valve, reduce the time of shut down, the productivity of producing the line has been improved, the dismouting number of times and the life of piezoelectric valve body have been promoted effectively.

Drawings

Fig. 1 is an exploded view of a locking device for a dispensing piezoelectric valve provided by the present invention;

fig. 2 is a cross-sectional view of a fastening mechanism provided by the present invention.

Fig. 3 is a cross-sectional view of the locking device for the dispensing piezoelectric valve provided by the present invention;

fig. 4 is an exploded view of the liquid cartridge mechanism provided by the present invention;

fig. 5 is a schematic structural view of a firing pin assembly provided by the present invention;

fig. 6 is a schematic view of the assembly process of the locking device for dispensing piezoelectric valve provided by the present invention.

In the figure:

100. a piezoelectric valve body; 110. a first latch; 120. a first mounting groove; 130. a first mounting hole; 140. a second mounting hole; 150. a striker assembly; 151. a striker; 152. a striker protective sheath; 1521. a guide surface; 153. a second elastic member; 154. an exhaust hole;

200. a liquid cartridge body; 201. a groove; 202. discharging the rubber tube; 203. a cushion block; 210. a second latch; 211. positioning a groove; 2111. a second guide slope; 212. a first guide slope; 220. a second mounting groove; 230. a first flow passage; 240. a liquid cartridge holder; 241. a second flow passage; 250. a seal ring; 260. a luer fitting; 270. sealing gaskets; 280. plugging and sealing; 290. a fastener;

300. a fastening mechanism; 310. positioning pins; 311. a limiting hole; 320. a locking member; 330. a first elastic member; 340. a limit pin;

400. and a glue outlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

As shown in fig. 1-3, the utility model provides a locking device for some glue piezoelectric valve, including piezoelectric injection mechanism, liquid box mechanism and fastening mechanism 300, piezoelectric injection mechanism includes piezoelectric valve body 100, be provided with first block tongue 110 and first mounting groove 120 on the piezoelectric valve body 100, liquid box mechanism includes liquid box body 200, be provided with second block tongue 210 and second mounting groove 220 on the liquid box body 200, second block tongue 210 and first mounting groove 120 joint, first block tongue 110 and second mounting groove 220 joint, and second block tongue 210 is just provided with constant head tank 211 to one side of first mounting groove 120 tank bottom, fastening mechanism 300 sets up on piezoelectric valve body 100, fastening mechanism 300 includes locating pin 310 and retaining member 320, locating pin 310 is through first elastic component 330 and piezoelectric valve body 100 elastic connection, the first end of locating pin 310 can stretch into in the constant head tank 211, retaining member 320 is used for preventing the first end of locating pin 310 from shifting out from constant head tank 211.

In the embodiment, the piezoelectric injection mechanism, the liquid box mechanism and the fastening mechanism 300 are arranged, the piezoelectric injection mechanism is clamped with the liquid box mechanism, the fastening mechanism 300 is arranged on the piezoelectric valve body 100 of the piezoelectric injection mechanism, so that the positioning pin 310 of the fastening mechanism 300 is elastically connected with the piezoelectric valve body 100, the positioning groove 211 is arranged on the second tongue 210 of the liquid box body 200 of the liquid box mechanism, after the first tongue 110 is clamped with the second mounting groove 220 and the second tongue 210 is clamped with the first mounting groove 120, the first end of the positioning pin 310 can extend into the positioning groove 211, the position of the positioning pin 310 is locked by the locking member 320 of the fastening mechanism 300 to be incapable of moving, the positioning pin 310 is prevented from moving out of the positioning groove 211, and the piezoelectric valve body 100 can be fixed on the liquid box body 200.

Alternatively, as shown in fig. 2, the piezoelectric valve body 100 further includes a first mounting hole 130, a boss is disposed on the positioning pin 310 in a circumferential direction, and one end of the first elastic member 330 is connected to the boss of the positioning pin 310, and the other end is connected to the bottom wall of the first mounting hole 130.

Further, the first elastic member 330 is a compression spring, the compression spring is sleeved on the positioning pin 310, and the compression spring can drive the first end of the positioning pin 310 to be inserted into the positioning groove 211.

Preferably, as shown in fig. 2 and fig. 3, the fastening mechanism 300 further includes a limit pin 340, a waist-shaped limit hole 311 is disposed on the positioning pin 310, the limit pin 340 penetrates through the waist-shaped limit hole 311, and the limit pin 340 is used for limiting a position of the positioning pin 310 driven by the first elastic element 330 when the positioning pin rebounds and resets under the action of the elastic force of the compression spring.

Preferably, as shown in fig. 2, the second latch 210 is provided with a first guiding inclined surface 212, the first end of the positioning pin 310 is hemispherical, and the first guiding inclined surface 212 can reduce resistance in the process that the first end of the positioning pin 310 slides into the positioning slot 211, so as to facilitate the sliding of the first end of the positioning pin 310 into the positioning slot 211.

Preferably, as shown in fig. 2, a second guiding slope 2111 is provided on the side wall of the positioning groove 211, and the second guiding slope 2111 can reduce resistance when the positioning pin 310 needs to slide out of the positioning groove 211, so as to facilitate the first end of the positioning pin 310 to slide out of the positioning groove 211.

Preferably, as shown in fig. 2, the piezoelectric valve body 100 further includes a second mounting hole 140, the second mounting hole 140 is a blind hole, the first mounting hole 130 is a through hole, the second mounting hole 140 is communicated with the first mounting hole 130, the second end of the positioning pin 310 can extend into the second mounting hole 140, the locking member 320 is disposed through the second mounting hole 140, and the first end of the positioning pin 310 can be prevented from being removed from the positioning groove 211 after the locking member 320 abuts against the second end of the positioning pin 310.

Further, the second end of locating pin 310 is provided with third direction inclined plane, retaining member 320 stretches into one of second mounting hole 140 and serves and be provided with the bulb, third direction inclined plane can be along with the stretching into of retaining member 320, the one end that makes retaining member 320 have the bulb contacts with the upper end on third direction inclined plane at first, make retaining member 320 can be linear change to the locking force on third inclined plane, conveniently adjust the butt power of retaining member 320 and locating pin 310, thereby conveniently adjust the locking degree to locating pin 310.

Preferably, the locking member 320 in this embodiment is a locking bolt that is threadedly coupled to the second mounting member.

Optionally, as shown in fig. 3 and 4, the liquid cartridge mechanism further includes a liquid cartridge fixing seat 240, the liquid cartridge body 200 is connected to the liquid cartridge fixing seat 240 through a fastening member 290, and the fastening member 290 in this embodiment is a fastening bolt.

Optionally, as shown in fig. 3 and 4, the liquid cartridge body 200 is provided with a first flow channel 230, the liquid cartridge fixing seat 240 is provided with a second flow channel 241, the first flow channel 230 is communicated with the second flow channel 241, and a sealing ring 250 is provided at a connection between the first flow channel 230 and the second flow channel 241, so that the sealing property at the connection between the first flow channel 230 and the second flow channel 241 can be improved, and the dispensing effect can be improved. In this embodiment, the sealing ring 250 is an O-ring, which has a good sealing effect and can further ensure the sealing property at the joint of the first flow channel 230 and the second flow channel 241.

Optionally, as shown in fig. 3, the liquid cartridge mechanism further includes a luer 260, and the luer 260 is detachably connected to the liquid cartridge holder 240, so as to facilitate installation and detachment of the luer 260. Specifically, in this embodiment, the luer 260 is connected to the liquid cartridge holder 240 through a thread, and the sealing gasket 270 is disposed between the luer 260 and the liquid cartridge holder 240, so as to ensure the mounting firmness and sealing performance of the luer 260 and the liquid cartridge holder 240.

Optionally, the locking device of the piezoelectric dispensing valve further includes a glue outlet nozzle 400, the glue outlet nozzle 400 is connected to the glue outlet pipe 202 of the liquid cartridge body 200 in a sealing manner, specifically, the glue outlet nozzle 400 is connected to the glue outlet pipe 202 in a threaded manner, so as to facilitate installation and detachment of the glue outlet nozzle 400.

Optionally, as shown in fig. 3, 4 and 5, the piezoelectric injection mechanism further includes a striker assembly 150, the striker assembly 150 includes a striker 151, a striker protective sleeve 152 and a second elastic member 153, the striker protective sleeve 152 is disposed on the piezoelectric valve body 100, a first end of the striker 151 is disposed through the striker protective sleeve 152, the second elastic member 153 is sleeved on the striker 151, one end of the second elastic member 153 is connected to a second end of the striker 151, and the other end of the second elastic member 153 is connected to an upper end surface of the striker protective sleeve 152, after the liquid cartridge body 200 is assembled with the piezoelectric valve body 100, the first end of the striker 151 extends into the glue outlet 400, the striker protective sleeve 152 is provided with an air outlet 154, and the air outlet 154 is used for exhausting air in the glue outlet 400 when the piezoelectric valve body 100 is assembled with the liquid cartridge body 200, so that the striker 151 moves more smoothly. Specifically, two cushion blocks 203 are arranged on the upper end face of the liquid box body 200, after the liquid box body 200 and the piezoelectric valve body 100 are assembled, a gap can be formed between the liquid box body 200 and the piezoelectric valve body 100 through the cushion blocks 203, and the exhaust hole 154 is just positioned at the gap, so that air in the glue outlet nozzle 400 can be exhausted in time.

Specifically, the second elastic member 153 in this embodiment is a spring, which has a low cost and a good elasticity and can provide sufficient buffering for the striker 151.

Preferably, as shown in fig. 3, 4 and 5, the liquid cartridge body 200 is further provided with a groove 201, the groove 201 is communicated with the glue outlet pipe 202, the lower end of the striker protection sleeve 152 is provided with a guide surface 1521, and after the piezoelectric valve body 100 and the liquid cartridge body 200 are assembled, the guide surface 1521 can be attached to the inner wall of the groove 201. It can be understood that, after the liquid cartridge body 200 and the piezoelectric valve body 100 are assembled, the inner wall of the groove 201 of the liquid cartridge body 200 abuts against the outer wall of the lower end of the striker protection sleeve 152, and the first end of the striker 151 can be inserted into the flow channel of the glue outlet 400. By controlling the processing precision of the outer wall of the striker protective sleeve 152 and the processing precision of the contact part of the liquid box body 200 and the striker protective sleeve 152, the concentricity of the striker 151 and the glue outlet 400 can be ensured, and the quality of dispensing is improved. In the assembling process, the guide surface 1521 of the striker protection sleeve 152 can provide a guiding function for assembling the liquid cartridge body 200, so that the liquid cartridge body 200 and the piezoelectric valve body 100 can be assembled conveniently.

Optionally, as shown in fig. 4, in this embodiment, a groove 201 is disposed on the liquid cartridge body 200, a universal plug seal 280 is disposed in the groove 201, a through hole is disposed on the universal plug seal 280, the first end of the striker 151 passes through the through hole and then is inserted into the flow channel of the glue outlet 400, and the universal plug seal 280 can seal the upper end of the glue outlet pipe 202 to ensure the glue dispensing effect.

Specifically, as shown in fig. 6, the mounting steps of the locking device for the dispensing piezoelectric valve provided in this embodiment are as follows:

first, the liquid cartridge body 200 is placed vertically to the piezoelectric valve body 100, the liquid cartridge body 200 is moved upward, the striker 151 is inserted into the first flow channel 230, after the liquid cartridge body 200 is attached to the piezoelectric valve body 100, the piezoelectric valve body 100 is rotated by 90 °, during the rotation, the positioning pin 310 slides into the positioning groove 211 through the first guide inclined surface 212, the second latch 210 is tightly fitted to the first mounting groove 120, at this time, the first latch 110 is latched in the second mounting groove 220, and at this time, the liquid cartridge body 200 is fixed in the Y-axis direction.

Then, insert retaining member 320 into second mounting hole 140, rotate retaining member 320, make retaining member 320 screw in second mounting hole 140, the bulb end of retaining member 320 and the third direction inclined plane of locating pin 310 second end contact gradually, continue rotatory retaining member 320, improve the butt power of retaining member 320 to locating pin 310, insert in constant head tank 211 with the first end of guaranteeing locating pin 310 is firm, can not deviate from in constant head tank 211, fixed liquid box body 200 has been carried out to X axle direction this moment, thereby guarantee liquid box body 200 and piezoelectric valve body 100 firm connection.

And finally, mounting the assembled whole on a dispenser.

When the piezoelectric valve body 100 is disassembled, the locking member 320 needs to be screwed out reversely, then the liquid box body 200 rotates 90 degrees relative to the piezoelectric valve body 100, and finally the liquid box body 200 moves downwards, so that the liquid box body 200 can be disassembled from the piezoelectric valve body 100, a special tool is not needed for disassembling the piezoelectric valve body 100, the steps of disassembly and assembly are simplified, the maintenance time is shortened, the stop time of dispensing equipment is reduced, and the production capacity of a production line is improved.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A locking device for dispensing piezoelectric valves, comprising:

the piezoelectric injection mechanism comprises a piezoelectric valve body (100), wherein the piezoelectric valve body (100) comprises a first clamping tongue (110) and a first mounting groove (120);

the liquid box mechanism comprises a liquid box body (200), wherein the liquid box body (200) comprises a second clamping tongue (210) and a second mounting groove (220), the second clamping tongue (210) is clamped with the first mounting groove (120), one side, opposite to the bottom of the first mounting groove (120), of the second clamping tongue (210) is provided with a positioning groove (211), and the first clamping tongue (110) is clamped with the second mounting groove (220);

the fastening mechanism (300) is arranged on the piezoelectric valve body (100), the fastening mechanism (300) comprises a positioning pin (310), a first elastic piece (330) and a locking piece (320), the positioning pin (310) is elastically connected with the piezoelectric valve body (100) through the first elastic piece (330), a first end of the positioning pin (310) can extend into the positioning groove (211), and the locking piece (320) is configured to prevent the first end of the positioning pin (310) from moving out of the positioning groove (211).

2. A locking device for a piezoelectric dispensing valve according to claim 1, wherein the piezoelectric valve body (100) further comprises a first mounting hole (130), and the first elastic member (330) has one end connected to the positioning pin (310) and the other end connected to a bottom wall of the first mounting hole (130).

3. The locking device for a piezoelectric dispensing valve according to claim 2, wherein the fastening mechanism (300) further comprises a limiting pin (340), a waist-shaped limiting hole (311) is disposed in the positioning pin (310), the limiting pin (340) is disposed through the waist-shaped limiting hole (311), and the limiting pin (340) is configured to limit a moving distance of the first elastic member (330) driving the positioning pin (310).

4. The locking device for a piezo-electric valve in point of sale according to claim 1, characterized in that a first guiding slope (212) is provided on the second latch (210), the first end of the positioning pin (310) is hemispherical, the first guiding slope (212) is configured to facilitate the sliding of the first end of the positioning pin (310) into the positioning slot (211).

5. A locking device for a piezo-electric valve for dispensing according to claim 1, characterized in that a second guiding slope (2111) is provided on a side wall of the positioning slot (211), the second guiding slope (2111) being configured to facilitate sliding the first end of the positioning pin (310) out of the positioning slot (211).

6. The locking device for a dispensing piezoelectric valve according to claim 2, wherein the piezoelectric valve body (100) further comprises a second mounting hole (140), the second mounting hole (140) is communicated with the first mounting hole (130), a second end of the positioning pin (310) can extend into the second mounting hole (140), the locking member (320) penetrates through the second mounting hole (140), and the first end of the positioning pin (310) can be prevented from being removed from the positioning groove (211) after the locking member (320) abuts against the second end of the positioning pin (310).

7. The locking device for a piezoelectric dispensing valve according to claim 6, wherein the second end of the positioning pin (310) is provided with a third guiding slope, the locking member (320) is provided with a ball head, and the third guiding slope is configured to facilitate adjustment of the abutting force of the locking member (320) and the positioning pin (310).

8. The locking device for a piezoelectric dispensing valve according to any one of claims 1 to 7, further comprising a glue nozzle (400), wherein the glue nozzle (400) is hermetically connected with the glue outlet pipe (202) of the liquid cartridge body (200).

9. The locking device for a dispensing piezoelectric valve according to claim 8, wherein the piezoelectric injection mechanism further includes a striker assembly (150), the striker assembly (150) includes a striker (151), a striker protective sleeve (152) and a second elastic member (153), the striker protective sleeve (152) is disposed on the piezoelectric valve body (100), a first end of the striker (151) passes through the striker protective sleeve (152) and extends into the glue outlet nozzle (400) of the liquid cartridge body (200), a second end of the striker protective sleeve (152) is elastically connected to the striker protective sleeve (152) through the second elastic member (153), the striker protective sleeve (152) is provided with a vent hole (154), and the vent hole (154) is configured to exhaust air in the glue outlet nozzle (400) when the piezoelectric valve body (100) is assembled with the liquid cartridge body (200).

10. The locking device for a piezoelectric dispensing valve according to claim 9, wherein a groove (201) is further formed in the liquid box body (200), the groove (201) is communicated with the rubber outlet pipe (202), a guide surface (1521) is arranged at a lower end of the striker protection sleeve (152), and the guide surface (1521) can be attached to an inner wall of the groove (201).

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