CN215507561U

CN215507561U - Dispensing valve

Info

Publication number: CN215507561U
Application number: CN202121757565.6U
Authority: CN
Inventors: 张涛; 江岱平; 卢国艺; 陈文雄; 谢琴华; 易智勇; 卢国娟; 张栋
Original assignee: Shenzhen Tengsheng Precision Equipment Co ltd
Current assignee: Shenzhen Tengsheng Precision Equipment Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-01-14
Anticipated expiration: 2031-07-29

Abstract

The application provides a dispensing valve, which comprises a base; the dispensing needle head is arranged at one end of the base; one end of the glue supply needle cylinder is communicated with the feeding end of the glue dispensing needle head; the air supply unit is arranged at the other end of the base, the air outlet end of the air supply unit is communicated with the other end of the glue supply needle cylinder, and the air supply unit is used for supplying air into the glue supply needle cylinder so as to extrude liquid from the glue dispensing needle head. This application is passed through the air feed unit and is supplied air punching press in to supplying the glue cylinder, utilizes pressure can be with supplying the liquid in the glue cylinder by some syringe needle discharge of gluing. This application adopts the mode that liquid was extruded to atmospheric pressure to replace traditional screw valve, the mode of mechanical extrusion liquid such as plunger valve to can avoid screw valve, plunger valve etc. to the rigid extrusion of liquid, avoid the internal organization of liquid to receive destruction, especially have the liquid that the granule is constituteed to tin cream, silver thick liquid etc. be difficult for causing the granule to produce deformation or adhesion and form the phenomenon of big granule together, thereby can avoid the syringe needle to block up or export the unstable problem of flow.

Description

Dispensing valve

Technical Field

The application belongs to the technical field of some glue, more specifically says, relates to a dispensing valve.

Background

In the technical field of dispensing, liquid in a rubber cylinder is extruded out mainly through a screw valve and a plunger valve, so that dispensing operation is realized. However, screw valves, plunger valves, etc. have inevitable mechanical type rigid extrusion to liquid to destroy the internal organization of liquid, especially have the liquid of granule constitution like tin cream, silver thick liquid, because mechanical action such as striking, extrusion and friction, can cause the granule to produce deformation or adhesion and form the large granule together, easily lead to the problem that the syringe needle blocks up or export flow is unstable.

SUMMERY OF THE UTILITY MODEL

An object of this application embodiment is to provide a dispensing valve to solve exist among the relevant art: the screw valve, the plunger valve and the like have inevitable mechanical rigid extrusion effect on liquid, so that the internal tissue of the liquid is damaged, and the problems of needle blockage or unstable outlet flow are easily caused.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

there is provided a dispensing valve comprising:

a base;

the dispensing needle head is arranged at one end of the base;

one end of the glue supply needle cylinder is communicated with the feeding end of the glue dispensing needle head;

the air feed unit, install in the other end of base, the end of giving vent to anger of air feed unit with the other end intercommunication that supplies the glue cylinder, the air feed unit be used for to supply the interior air feed of glue cylinder with this liquid that supplies in the glue cylinder by the syringe needle is extruded to the point.

This structure, this application passes through the air feed unit and supplies the punching press of air feed in to supplying the glue cylinder, utilizes pressure can be with supplying the liquid in the glue cylinder by some syringe needle discharge of gluing. This application adopts the mode that liquid was extruded to atmospheric pressure to replace traditional screw valve, the mode of mechanical extrusion liquid such as plunger valve to can avoid screw valve, plunger valve etc. to the rigid extrusion of liquid, avoid the internal organization of liquid to receive destruction, especially have the liquid that the granule is constituteed to tin cream, silver thick liquid etc. be difficult for causing the granule to produce deformation or adhesion and form the phenomenon of big granule together, thereby can avoid the syringe needle to block up or export the unstable problem of flow.

In one embodiment, the dispensing needle comprises a dispensing seat mounted on the base and a needle body connected with the dispensing seat, and the dispensing seat is provided with a dispensing passage communicating the discharge end of the glue supply syringe and the feed end of the needle body.

The structure is convenient for supporting and fixing the needle head body through the connection of the dispensing seat and the base; the glue supply needle cylinder can be communicated with the needle head body through the glue dispensing channel, so that liquid can be conveniently discharged.

In one embodiment, two clamping plates are installed on the base at intervals, and the glue dispensing seat is installed between the two clamping plates.

The structure can realize quick positioning and installation of the dispensing seat and improve the efficiency.

In one embodiment, a first pair of slots for inserting the needle body is formed in one end of the glue dispensing seat, which is far away from the glue supply needle cylinder, and the glue dispensing channel is communicated with the first pair of slots.

The structure can improve the alignment installation efficiency between the dispensing seat and the needle head body.

In one embodiment, the glue supplying cylinder comprises a glue cylinder body and a connecting pipe for communicating the discharge end of the glue cylinder body with the feed end of the glue dispensing needle, and the central axis of the glue cylinder body, the central axis of the connecting pipe and the central axis of the glue dispensing needle are collinear.

The structure adopts a straight-through structural design, and the pressure loss in the rubber cylinder body, the connecting pipe and the dispensing needle head is small, so that the dispensing uniformity can be improved, and the dispensing valve is less in maintenance.

In one embodiment, the glue supplying syringe further comprises a first sleeve sleeved on the connecting pipe and a second sleeve sleeved on one end of the first sleeve, one end of the second sleeve is connected with the discharging end of the glue barrel body, and the other end of the second sleeve is connected with the feeding end of the glue dispensing needle.

According to the structure, the connecting pipe can be accommodated through the first sleeve, so that the connecting pipe can be protected. Through the cooperation of second sleeve pipe and point gum seat, can realize fixed the centre gripping of first sleeve pipe and connecting pipe.

In one embodiment, a pair of insertion tubes is installed at one end of the second sleeve far away from the dispensing needle, and a second pair of insertion slots for the insertion tubes to be inserted are correspondingly formed in the rubber cylinder body.

The structure can improve the alignment installation efficiency of the rubber cylinder body and the second sleeve.

In one embodiment, the dispensing needle is provided with a third pair of slots for inserting one end of the first sleeve far away from the rubber cylinder body.

This structure can improve the counterpoint precision of first sleeve pipe and point gum seat, improves the installation effectiveness.

In one embodiment, a first step portion is formed between the second sleeve and the first sleeve, and a second step portion matched with and abutted against the first step portion is arranged on the inner side walls of the third pair of slots.

This structure can improve the counterpoint precision of first sleeve pipe and point gum seat, improves assembly efficiency.

In one embodiment, the dispensing valve further comprises a muffler mounted on the base.

This structure can reduce the noise processing to the air feed unit, reduces the noise when the valve uses of point gum.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a dispensing valve provided in an embodiment of the present application;

FIG. 2 is a schematic view of the structure of FIG. 1 with the housing removed;

fig. 3 is a schematic structural view illustrating a connection between a dispensing needle and a glue supply syringe according to an embodiment of the present disclosure;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a cross-sectional view of FIG. 3;

FIG. 6 is an enlarged schematic view at A in FIG. 5;

FIG. 7 is a cross-sectional view of a body of a glue cartridge provided in an embodiment of the present application;

FIG. 8 is a cross-sectional view of a connection of a first sleeve to a second sleeve provided by an embodiment of the present application;

FIG. 9 is a cross-sectional view of a connecting tube according to an embodiment of the present disclosure;

fig. 10 is an exploded view of a cross-sectional view of a dispensing needle provided in accordance with an embodiment of the present disclosure;

FIG. 11 is a first exploded view of the base, the first inlet duct, the outlet duct, the second inlet duct, and the silencer according to an embodiment of the present disclosure;

fig. 12 is an exploded schematic view ii of a base, a first air inlet pipe, an air outlet pipe, a second air inlet pipe and a silencer according to an embodiment of the present disclosure;

fig. 13 is an equivalent schematic view of the first air supply unit, the second air supply unit, the glue supply syringe, the first sleeve and the glue dispensing needle head connection provided in the embodiment of the present application;

fig. 14 is an equivalent schematic diagram of a connection pipe provided in an embodiment of the present application in an initial state;

FIG. 15 is an equivalent schematic view of a connection pipe deformed under pressure according to an embodiment of the present application;

fig. 16 is a flowchart of a dispensing method of a dispensing valve according to an embodiment of the present application.

Wherein, in the drawings, the reference numerals are mainly as follows:

1. a base; 11. a first air intake duct; 12. an air outlet pipe; 13. a first air intake passage; 14. a first air outlet channel; 15. a second air intake duct; 16. a second intake passage; 17. a second air outlet channel; 18. a splint;

2. dispensing a needle head; 21. dispensing a glue seat; 211. a dispensing channel; 212. a first pair of slots; 213. a third pair of slots; 2130. a via hole; 2131. a second step portion; 22. a needle body;

3. an air supply unit; 31. a first air supply unit; 32. a second air supply unit;

4. a glue supply needle cylinder; 41. a rubber cylinder body; 411. a second pair of slots; 42. a connecting pipe; 421. a second groove; 43. a first sleeve; 430. a through hole; 431. a first groove; 432. a first step portion; 44. a second sleeve; 441. inserting the tube;

5. a housing; 50. heat dissipation holes; 51. a connector;

6. a silencer.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 application can be understood by those of ordinary skill in the art as appropriate.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 2, a dispensing valve provided in an embodiment of the present application will now be described. The dispensing valve comprises a base 1, a dispensing needle 2 arranged at one end of the base 1, an air supply unit 3 arranged at the other end of the base 1 and a glue supply syringe 4 communicated with the dispensing needle 2. Wherein, the air outlet end of the air supply unit 3 is connected with the feed end of the glue supply needle cylinder 4, and the discharge end of the glue supply needle cylinder 4 is connected with the feed end of the glue dispensing needle head 2. This structure, this application is passed through air feed unit 3 and is supplied the air feed punching press in to supplying glue cylinder 4, utilizes pressure can be with supplying the liquid in the glue cylinder 4 by some syringe needles 2 discharges of gluing. This application adopts the mode that liquid was extruded to atmospheric pressure to replace traditional screw valve, the mode of mechanical extrusion liquid such as plunger valve to can avoid screw valve, plunger valve etc. to the rigid extrusion of liquid, avoid the internal organization of liquid to receive destruction, especially have the liquid that the granule is constituteed to tin cream, silver thick liquid etc. be difficult for causing the granule to produce deformation or adhesion and form the phenomenon of big granule together, thereby can avoid the syringe needle to block up or export the unstable problem of flow.

In an embodiment, please refer to fig. 3 and 10, as a specific implementation manner of the dispensing valve provided in the embodiment of the present application, the dispensing needle 2 includes a dispensing seat 21 installed on the base 1 and a needle body 22 connected to the dispensing seat 21, and a dispensing passage 211 communicating a discharge end of the glue supply syringe 4 and a feed end of the needle body 22 is opened on the dispensing seat 21. The structure can realize the support and fixation of the needle head body 22 and the support and fixation of the glue supply syringe 4 through the connection of the glue dispensing seat 21 and the base 1. The glue supplying cylinder 4 can be communicated with the needle head body 22 through the glue dispensing passage 211, so that the liquid can be conveniently discharged.

In an embodiment, referring to fig. 2, as a specific implementation of the dispensing valve provided in the embodiment of the present application, two clamping plates 18 are installed on the base 1 at intervals, and the dispensing seat 21 is installed between the two clamping plates 18. According to the structure, the quick positioning and installation of the dispensing seat 21 can be realized through the two clamping plates 18, and the installation efficiency is improved.

In an embodiment, referring to fig. 10, as a specific implementation manner of the dispensing valve provided in the embodiment of the present application, a first pair of slots 212 for inserting the needle body 22 is formed at an end of the dispensing seat 21 away from the glue supply syringe 4, and the dispensing passage 211 is communicated with the first pair of slots 212. With this structure, the first pair of slots 212 can improve the alignment and installation efficiency between the dispensing seat 21 and the needle body 22. In some embodiments, in order to improve the sealing performance of the connection between the dispensing seat 21 and the needle body 22, a first sealing ring may be disposed in the first pair of slots 212 to avoid the risk of liquid leakage and air leakage.

In an embodiment, please refer to fig. 4 and 5, as a specific implementation manner of the dispensing valve provided in the embodiment of the present application, the glue supplying cylinder 4 includes a cylinder body 41 and a connecting pipe 42 for connecting the discharging end of the cylinder body 41 and the feeding end of the dispensing needle 2, and the central axis of the cylinder body 41, the central axis of the connecting pipe 42, and the central axis of the dispensing needle 2 are collinear. Specifically, one end of the connection tube 42 communicates with the glue cartridge body 41, and the other end of the connection tube 42 communicates with the dispensing passage 211. This structure adopts the design of straight-through structure, and the pressure loss among packing element body 41, connecting pipe 42 and some glue syringe needle 2 is little to can improve the homogeneity of some glue, the valve maintenance of some glue is few.

In an embodiment, please refer to fig. 4 and 5, as a specific implementation manner of the dispensing valve provided in the embodiment of the present application, the glue supplying cylinder 4 further includes a first sleeve 43 sleeved on the connecting pipe 42 and a second sleeve 44 sleeved on one end of the first sleeve 43, one end of the second sleeve 44 is connected to the discharging end of the glue cylinder body 41, and the other end of the second sleeve 44 is connected to the feeding end of the dispensing needle 2. Among them, the connection pipe 42 is a deformable hose. With this structure, the connection pipe 42 can be accommodated by the first sleeve 43, and the connection pipe 42 can be protected. The first sleeve 43 and the connecting pipe 42 can be clamped and fixed by matching the second sleeve 44 with the dispensing base 21.

In an embodiment, referring to fig. 7 and fig. 8, as a specific implementation manner of the dispensing valve provided in the embodiment of the present application, an opposite insertion tube 441 is installed at an end of the second sleeve 44 away from the dispensing needle 2, and a second pair of slots 411 for inserting the opposite insertion tube 441 are correspondingly formed on the rubber cylinder body 41. With the structure, the matching between the insertion tube 441 and the second pair of slots 411 can improve the alignment and installation efficiency of the rubber cylinder body 41 and the second sleeve 44. In some embodiments, in order to improve the connection sealing performance between the second sleeve 44 and the rubber tube body 41, a second sealing ring may be disposed in the second pair of slots 411 to avoid the risk of liquid leakage and air leakage.

In an embodiment, referring to fig. 10, as a specific implementation manner of the dispensing valve provided in the embodiment of the present application, the dispensing needle 2 is provided with a third pair of slots 213 into which one end of the first sleeve 43 away from the glue cylinder body 41 is inserted. Specifically, the dispensing base 21 is provided with a third pair of slots 213, and the third pair of slots 213 are communicated with the dispensing passage 211. With the structure, the third pair of slots 213 can improve the alignment precision between the first sleeve 43 and the dispensing base 21, thereby improving the installation efficiency.

In one embodiment, referring to fig. 2 and 4, a through hole 430 is formed at one end of the first sleeve 43 extending out of the second sleeve 44, and the end of the first sleeve 43 having the through hole 430 is inserted into the third pair of slots 213; the side walls of the third pair of slots 213 are formed with a via hole 2130 communicating with the through hole 430. The air supply unit 3 may include a first air supply unit 31 and a second air supply unit 32 respectively mounted on the base 1.

Referring to fig. 11 and 12, a first air inlet pipeline 11 and an air outlet pipeline 12 are installed on the base 1, a first air inlet channel 13 for communicating the first air inlet pipeline 11 with an air inlet end of the first air supply unit 31 and a first air outlet channel 14 for communicating an air outlet end of the first air supply unit 31 with the air outlet pipeline 12 are respectively opened in the base 1, and the air outlet pipeline 12 can be communicated with a feed end of the rubber cylinder body 41 through an air pipe. The base 1 is further provided with a second air inlet pipe 15, and the base 1 is respectively provided with a second air inlet channel 16 for communicating the second air inlet pipe 15 with the air inlet end of the second air supply unit 32, and a second air outlet channel 17 for communicating the air outlet end of the second air supply unit 32 with the through hole 2130. With this structure, the first air supply unit 31 can supply and exhaust air into the cartridge body 41 through the first air inlet duct 11 and the air outlet duct 12, and the second air supply unit 32 can supply and exhaust air into the first sleeve 43 through the via hole 2130 and the through hole 430 through the second air inlet duct 15 and the second air outlet duct 17, so that the dispensing operation can be performed by deformation of the connecting pipe 42. Moreover, the first air inlet channel 13, the first air outlet channel 14, the second air inlet channel 16 and the second air outlet channel 17 are respectively arranged in the base 1, so that the traditional communication mode through an air pipe is replaced, the first air supply unit 31 is conveniently and quickly communicated with the first air inlet pipeline 11 and the air outlet pipeline 12, and the second air supply unit 32 is conveniently and quickly communicated with the second air inlet pipeline 15 and the through hole 430, so that materials are saved. Here, the first air supply unit 31 and the second air supply unit 32 may be electromagnetic valves, and are not limited herein.

In one embodiment, referring to fig. 6 and 8, a first groove 431 is formed on an outer circumferential surface of the first sleeve 43 along a circumferential direction of the first sleeve 43, a through hole 430 is formed on a bottom surface of the first groove 431, and a through hole 2130 is communicated with the first groove 431. With this structure, the through hole 2130 can communicate with the through hole 430 through the first groove 431, so that the uniformity of the intake air can be improved, and the airflow can stably enter the first sleeve 43.

In one embodiment, referring to fig. 6 and 8, the number of the through holes 430 is two, the two through holes 430 are symmetrically distributed at two ends of the first sleeve 43, and the two through holes 430 are respectively disposed in the first groove 431. This structure, through two through-holes 430, can improve the efficiency of admitting air and giving vent to anger, and then improve and glue efficiency. Of course, in other embodiments, the number of the through holes 430 may be adjusted according to actual needs, and is not limited herein.

In one embodiment, referring to fig. 6 and 9, a second groove 421 is formed on the outer circumferential surface of the connecting pipe 42 along the circumferential direction of the connecting pipe 42, and the through hole 430 is communicated with the second groove 421. In this structure, the connection tube 42 can be in the shape of an i, the gas entering from the through hole 430 can fill the second groove 421, and when the pressure in the second groove 421 is greater than the pressure in the connection tube 42, the connection tube 42 deforms under pressure, so that the liquid in the connection tube 42 can be discharged through the dispensing needle 2. The second recess 421 can improve the uniformity of the intake air, and ensure that the deformation of the connection pipe 42 is consistent each time.

In an embodiment, referring to fig. 6, 8 and 10, as a specific implementation manner of the dispensing valve provided in the embodiment of the present application, a first step portion 432 is formed between the second sleeve 44 and the first sleeve 43, and a second step portion 2131 that is matched with and abutted against the first step portion 432 is disposed on an inner side wall of the third pair of slots 213. With this structure, the first stepped portion 432 and the second stepped portion 2131 are engaged with each other, so that the alignment accuracy between the first sleeve 43 and the dispensing base 21 can be improved, and the assembling efficiency can be improved.

In one embodiment, referring to fig. 1, the dispensing valve further includes a housing 5 mounted on the base 1, and the housing 5 covers the first air supply unit 31 and the second air supply unit 32, respectively. With this configuration, the first air supply unit 31 and the second air supply unit 32 can be covered and protected by the housing 5, thereby improving the safety of the dispensing valve.

In one embodiment, referring to fig. 1, the housing 5 may be provided with a plurality of heat dissipation holes 50, so that heat dissipated by the first air supply unit 31 and the second air supply unit 32 during operation can be discharged in time, which is helpful for prolonging the service life of the dispensing valve.

In one embodiment, referring to fig. 1, the first air supply unit 31 and the second air supply unit 32 may be connected by a connector 51, and the connector 51 is mounted on the housing 5. This configuration enables connection to an external circuit via the connector 51, thereby achieving conduction between the first air supply unit 31 and the second air supply unit 32.

In one embodiment, referring to fig. 1, a silencer 6 may be installed in the housing 5, and the silencer 6 may be installed on the base 1, so that noise reduction processing may be performed on the first air supply unit 31 and the second air supply unit 32 to reduce noise when the dispensing valve is used.

Referring to fig. 16, a dispensing method of a dispensing valve provided in the embodiment of the present application includes the following steps:

glue supply S1: the first air supply unit 31 supplies air into the glue supply cylinder 4 to press the liquid in the glue supply cylinder 4 into the connection pipe 42. Referring to fig. 13, the first air supply unit 31 discharges the air sucked from the first air inlet pipe 11 from the air outlet pipe 12 into the glue supply cylinder 4, and the liquid in the glue supply cylinder 4 is pressed into the connection pipe 42 under the action of the pressure F1.

Dispensing S2: the second air supply unit 32 supplies air into the first sleeve 43 so that the pressure in the first sleeve 43 is greater than the pressure in the connecting pipe 42, and the liquid is discharged from the dispensing needle 2 after the connecting pipe 42 is deformed by pressure. Referring to fig. 14 and 15, the second air supply unit 32 discharges the air sucked from the second air inlet pipe 15 into the first sleeve 43 through the second air outlet channel 17, the through hole 2130 and the through hole 430, and as the pressure F2 in the first sleeve 43 gradually increases, when the pressure F2 in the first sleeve 43 is greater than the pressure F1 in the connection pipe 42, the connection pipe 42 deforms under the pressure difference (F2-F1), so that the liquid in the connection pipe 42 can be discharged from the dispensing needle 2.

Suction reset S3: the second air supply unit 32 sucks the first sleeve 43 so that the pressure in the first sleeve 43 is less than or equal to the pressure in the connection pipe 42, and the connection pipe 42 is expanded to the initial position. Referring to fig. 14 and 15, the second air supply unit 32 discharges the air in the first sleeve 43 through the second air inlet duct 15, the pressure F2 in the first sleeve 43 is gradually decreased, and the connection pipe 42 is expanded to the initial position under the pressure F1 provided by the first air supply unit 31 when the pressure F2 in the first sleeve 43 is less than or equal to the pressure F1 in the connection pipe 42. In the process of expanding the connecting tube 42, the liquid which is not discharged from the dispensing needle 2 can be sucked back into the connecting tube 42, so that the problem of liquid leakage can be prevented.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. Dispensing valve, its characterized in that includes:

a base;

the dispensing needle head is arranged at one end of the base;

2. The dispensing valve of claim 1, wherein: the dispensing needle head comprises a dispensing seat arranged on the base and a needle head body connected with the dispensing seat, and a dispensing channel communicated with the discharge end of the glue supply needle cylinder and the feed end of the needle head body is formed in the dispensing seat.

3. The dispensing valve of claim 2, wherein: two clamping plates are installed on the base at intervals, and the dispensing seat is installed between the two clamping plates.

4. The dispensing valve of claim 2, wherein: the glue dispensing seat is far away from one end of the glue supply needle cylinder, a first pair of slots for inserting the needle head body are formed in the end, into which the needle head body is inserted, of the glue dispensing seat, and the glue dispensing channel is communicated with the first pair of slots.

5. The dispensing valve of claim 1, wherein: the glue supply needle cylinder comprises a glue cylinder body and a connecting pipe, wherein the connecting pipe is communicated with the discharge end of the glue cylinder body and the feed end of the glue dispensing needle head, and the central axis of the glue cylinder body, the central axis of the connecting pipe and the central axis collineation of the glue dispensing needle head are arranged.

6. The dispensing valve of claim 5, wherein: the glue supply syringe further comprises a first sleeve sleeved on the connecting pipe and a second sleeve sleeved at one end of the first sleeve, one end of the second sleeve is connected with the discharge end of the glue barrel body, and the other end of the second sleeve is connected with the feed end of the glue dispensing needle.

7. The dispensing valve of claim 6, wherein: the second sleeve is far away from one end of the dispensing needle head and is provided with a pair of insertion tubes, and the rubber cylinder body is correspondingly provided with a second pair of insertion slots for inserting the insertion tubes.

8. The dispensing valve of claim 6, wherein: and a third pair of slots for inserting one end of the first sleeve far away from the rubber cylinder body are formed in the dispensing needle head.

9. The dispensing valve of claim 8, wherein: a first step part is formed between the second sleeve and the first sleeve, and a second step part matched with and abutted against the first step part is arranged on the inner side wall of the third pair of slots.

10. A dispensing valve according to any of claims 1-9, wherein: the dispensing valve further comprises a silencer mounted on the base.