CN219943432U - Rotary dispensing valve and dispensing equipment with same - Google Patents

Abstract

The utility model discloses a rotary dispensing valve and dispensing equipment with the rotary dispensing valve, comprising a hollow rotary platform, a rotary table assembly, a glue feeding assembly, a needle head assembly and a valve body, wherein the rotary table assembly comprises a rotary disc and a rubber tube, the rotary disc is connected to the hollow rotary platform and rotates along with the hollow rotary platform, the rubber tube is arranged in the middle of the bottom surface of the rotary disc, a glue discharging channel is arranged in the rubber tube, the glue feeding assembly is arranged on one side of the hollow rotary platform and is communicated with the glue discharging channel, the needle head assembly is arranged at the lower end of the rubber tube and is communicated with the glue feeding channel, the lower end of the needle head assembly is bent towards the side face of the needle head assembly, and the valve body is arranged above the hollow rotary platform and is connected with the rubber tube.

Description

Rotary dispensing valve and dispensing equipment with same

Technical Field

The utility model relates to the field of dispensing equipment, in particular to a rotary dispensing valve and dispensing equipment with the rotary dispensing valve.

Background

Dispensing is a process of dropping colloid onto a product to make the product have the functions of pasting, filling, insulating, fixing and the like.

The dispensing valve is a core piece in dispensing equipment, the dispensing valve can extrude colloid from a dispensing needle head, a glue outlet is formed in the bottom of the dispensing needle head, the glue outlet is close to a dispensed element, in the related art, dispensing processing for dispensing is difficult to be carried out on the annular inner wall of a hole of a workpiece, and glue is unevenly distributed during dispensing, so that dispensing requirements are difficult to meet.

Accordingly, there is a need in the art for further improvements.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the present utility model is to propose a rotary dispensing valve.

Another object of the present utility model is to provide a dispensing apparatus.

In order to achieve the above object, in one aspect, a rotary dispensing valve according to an embodiment of the present utility model includes a hollow rotary platform, a turntable assembly, a glue feeding assembly, a needle assembly, and a valve body.

The turntable assembly comprises a rotating disc and a rubber tube, wherein the rotating disc is connected to the hollow rotating platform and rotates along with the hollow rotating platform, the rubber tube is arranged in the middle of the bottom surface of the rotating disc, and a rubber discharging channel is arranged in the rubber tube.

The glue feeding assembly is arranged on one side of the hollow rotating platform and communicated with the glue discharging channel, and is used for conveying glue in the glue discharging channel.

The needle head assembly is arranged at the lower end of the rubber tube and is communicated with the rubber inlet channel, and the lower end of the needle head assembly is bent towards the side face of the needle head assembly.

The valve body is arranged above the hollow rotating platform, and the lower end of the valve body is connected with the rubber pipe and used for sealing and opening the rubber discharging channel.

In addition, the rotary dispensing valve according to the above embodiment of the present utility model may further have the following additional technical features:

according to one embodiment of the utility model, the glue inlet assembly comprises a flow guide piece, an adapter piece and a glue barrel.

The guide piece is arranged on the upper surface of the hollow rotary platform, the lower end of the guide piece is connected with the rubber tube, a first glue inlet channel is arranged in the guide piece, and the first glue inlet channel is communicated with the glue outlet channel.

One end of the adapter is connected to the side face of the flow guiding piece, a second glue feeding channel is arranged in the adapter, and one end of the second glue feeding channel is communicated with the first glue feeding channel.

The glue barrel is arranged at the other end of the adapter, and a glue outlet of the glue barrel is communicated with the other end of the second glue inlet channel.

According to one embodiment of the utility model, the upper surface of the rotating disc is provided with a connecting groove, the connecting groove and the glue discharging channel are positioned on the same axis, the lower end of the flow guiding piece is provided with a connecting part, and the connecting part is inserted into the connecting groove and is in rotating connection with the rotating disc.

According to one embodiment of the utility model, the valve body comprises a valve body, a sealing rod and an adjusting seat.

The valve body is arranged above the flow guide piece, the upper end of the valve body is provided with a mounting groove, the bottom surface of the mounting groove is provided with a through groove, and the through groove penetrates to the bottom surface of the valve body.

The sealing rod can vertically movably penetrate through the through groove, and the lower end of the sealing rod is inserted into the glue discharging channel to seal and open the glue discharging channel.

The adjusting seat is arranged at the upper end of the valve body and used for driving the sealing rod to move up and down.

According to one embodiment of the utility model, the adjustment seat comprises a housing, a thimble member, a movable plug and a return spring.

The shell is arranged at the upper end of the valve body, a regulating valve is arranged in the shell, and the regulating valve is in threaded connection with the inner wall of the shell.

The upper end of the thimble piece is connected with the regulating valve, and the lower end of the thimble piece extends into the mounting groove.

The movable plug is arranged in the mounting groove and can slide along the height direction of the mounting groove, and the upper end of the sealing rod is arranged on the movable plug in a penetrating way.

The reset spring is sleeved on the thimble piece, one end of the reset spring is propped against the regulating valve, and the other end of the reset spring is propped against the movable plug.

The installation groove is communicated with an air inlet component, and is used for injecting air or exhausting air into the installation groove so as to drive the movable piston to move up and down.

According to one embodiment of the utility model, the intake assembly includes an intake valve and a solenoid valve.

The air inlet valve is arranged on one side of the valve body, an air guide channel is arranged at the bottom end of the side wall of the mounting groove, and the air inlet valve is communicated with the air guide channel.

The electromagnetic valve is arranged above the air inlet valve and used for controlling air inlet or air exhaust of the air inlet valve.

According to one embodiment of the utility model, the bottom surface of the mounting groove is provided with a downward concave step surface, the step surface extends along the circumferential direction of the mounting groove, the step surface is provided with a sealing ring, and the upper end of the sealing rod is arranged in the sealing ring in a penetrating way.

According to one embodiment of the utility model, the needle assembly includes a connector, a lock nut, and a needle.

The inside subchannel that is equipped with of connector, subchannel upper end intercommunication the row glue passageway.

The locking nut is sleeved on the surface of the connecting sleeve so as to connect the connector with the lower end of the rubber tube.

The needle is arranged at the lower end of the connector and is communicated with the sub-channel, and the lower end of the needle is bent and extended to the side face of the needle.

According to one embodiment of the utility model, the sub-channel comprises an upper channel section and a lower channel section which are communicated up and down, the diameter of the upper channel section is larger than that of the lower channel section, and the needle is communicated with the lower channel section.

The lower channel section is sealed when the sealing rod lower end abuts against the lower channel section upper end.

On the other hand, the dispensing device provided by the embodiment of the utility model is provided with the rotary dispensing valve.

According to the rotary dispensing valve provided by the embodiment of the utility model, as the lower end of the needle head assembly is bent towards the side surface of the needle head assembly, when the rotary dispensing valve is used, the needle head assembly can be stretched into the inner side of a hole to be dispensed of a workpiece to be processed, and the hollow rotary platform drives the needle head assembly to rotate along the axis of the rubber tube, so that annular or preset arc-shaped corners are formed along the inner wall of the hole to be dispensed for dispensing, the dispensing is more convenient and quick, the dispensing is more uniform, and the higher dispensing requirement can be met.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of an embodiment of the present utility model;

FIG. 2 is another schematic view of the overall structure of an embodiment of the present utility model;

FIG. 3 is a side view of the overall structure of an embodiment of the present utility model;

FIG. 4 is a schematic view of a cross-section in the direction A-A in FIG. 3 according to an embodiment of the present utility model;

FIG. 5 is an exploded view of the overall structure of an embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a valve body in an embodiment of the utility model;

FIG. 7 is an enlarged view of portion B of FIG. 6 in accordance with an embodiment of the present utility model;

FIG. 8 is a cross-sectional view of a needle assembly according to an embodiment of the present utility model;

FIG. 9 is a cross-sectional view of an adhesive feeding assembly according to an embodiment of the utility model.

Reference numerals:

a hollow rotary platform 10;

a turntable assembly 20;

a rotating disc 201;

a connecting groove 2011;

a rubber tube 202;

a glue discharge passage 2021;

a glue inlet assembly 30;

a deflector 301;

a first glue inlet passage 3011;

a connection portion 3012;

an adapter 302;

a second glue inlet channel 3021;

a glue barrel 303;

needle assembly 40;

a connector 401;

a subchannel 4011;

an upper channel section 40111;

a lower channel section 40112;

a lock nut 402;

a needle 403;

a valve body 50;

a valve body 501;

a mounting groove 5011;

a through slot 5012;

a step face 5013;

a seal 5014;

a sealing rod 502;

an adjustment seat 503;

a housing 5031;

a regulating valve 5032;

thimble members 5033;

a movable plug 5034;

a return spring 5035;

an air intake assembly 60;

an intake valve 601;

an air guide passage 6011;

a solenoid valve 602.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

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

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The rotary dispensing valve and the dispensing device with the rotary dispensing valve according to the embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 9, the rotary dispensing valve according to the embodiment of the present utility model includes a hollow rotary platform 10, a turntable assembly 20, a glue feeding assembly 30, a needle 403 assembly 40, and a valve body 50. The hollow rotary platform 10 is a prior art, and can be selected according to the requirements in use.

The turntable assembly 20 comprises a rotating disc 201 and a rubber tube 202, wherein the rotating disc 201 is connected to the hollow rotating platform 10 and rotates along with the hollow rotating platform 10, the hollow rotating platform 10 drives the rotating disc 201 to rotate, the rubber tube 202 is arranged in the middle of the bottom surface of the rotating disc 201, and a rubber discharging channel 2021 is arranged in the rubber tube 202. The rubber tube 202 is driven to rotate by the turntable, and the upper end of the rubber tube 202 and the rotating disc 201 can be of an integrated structure. Powerful, still can set up the location inductor in aerial rotary platform bottom surface, can set up corresponding response piece on the rotor 201, so that rotor 201 resets.

The glue feeding assembly 30 is disposed at one side of the hollow rotary platform 10 and is communicated with the glue discharging channel 2021, so as to convey glue in the glue discharging channel 2021. The heated glue is delivered into the glue discharge path 2021 by the glue feed assembly 30 and dispensed by the needle 403 assembly 40.

The needle 403 assembly 40 is arranged at the lower end of the rubber tube 202 and is communicated with the rubber inlet channel, and the lower end of the needle 403 assembly 40 is bent towards the side surface of the needle 403 assembly 40. The bending of the needle 403 can make the glue outlet opening face to the side, so as to facilitate the dispensing of the glue on the inner side wall of the hole.

The valve body 50 is disposed above the hollow rotary platform 10, and the lower end of the valve body is connected to the rubber tube 202, so as to close and open the rubber discharging channel 2021. When dispensing, the valve body 50 controls the glue discharging channel 2021 to be opened so as to facilitate glue flow, and after dispensing is completed, the valve body 50 controls the glue discharging channel to be closed so as to avoid the glue discharging of the needle 403 assembly 40.

Based on the above, since the lower end of the needle 403 assembly 40 is bent towards the side surface of the needle 403 assembly 40, when in use, the needle 403 assembly 40 can extend into the inner side of the hole to be dispensed of the workpiece to be processed, and the hollow rotary platform 10 drives the needle 403 assembly 40 to rotate along the axis of the rubber tube 202, so that the inner wall of the hole to be dispensed is subjected to annular or predetermined arc-shaped corner to dispense glue, the dispensing is more convenient and quick, the dispensing is more uniform, and the higher dispensing requirement can be met.

Preferably, since the needle 403 assembly 40 needs to be replaced frequently and the temperature is too high to easily deform the needle 403 assembly 40, a cooling member may be further disposed on the periphery of the needle 403 assembly 40, and the cooling member surrounds the periphery of the needle 403 assembly 40 and is not in contact with the needle 403 assembly 40, so as to control the temperature of the needle 403 assembly 40, thereby facilitating replacement of the needle 403 assembly 40 by a worker, and avoiding a reduction in the service life of the needle 403 assembly 40 due to long-term high temperature.

Preferably, in one embodiment of the present utility model, the glue inlet assembly 30 includes a guide 301, an adapter 302, and a glue barrel 303.

The guide piece 301 is disposed on the upper surface of the hollow rotary platform 10, the lower end of the guide piece 301 is connected with the rubber tube 202, a first rubber inlet channel 3011 is disposed in the guide piece 301, and the first rubber inlet channel 3011 is communicated with the rubber outlet channel 2021.

One end of the adaptor 302 is connected to the side surface of the flow guiding element 301, a second glue feeding channel 3021 is provided in the adaptor 302, and one end of the second glue feeding channel 3021 is communicated with the first glue feeding channel 3011.

The glue barrel 303 is disposed at the other end of the adaptor 302, and a glue outlet of the glue barrel 303 is communicated with the other end of the second glue inlet channel 3021.

It should be noted that, the adaptor 302 extends laterally, that is, one end of the adaptor extends to the side of the hollow rotary platform 10, so as to facilitate the installation of the glue barrel 303, so that during dispensing, the glue in the glue barrel 303 enters the second glue inlet channel 3021, the first glue inlet channel 3011 and the glue outlet channel 2021 from the glue outlet of the glue barrel 303, finally enters the needle 403 assembly 40, and flows out from the lower end of the needle 403 assembly 40, so as to dispense the glue on the workpiece.

Preferably, in one embodiment of the present utility model, a connection groove 2011 is provided on the upper surface of the rotating disc 201, the connection groove 2011 and the glue discharging channel 2021 are located on the same axis, a connection portion 3012 is provided at the lower end of the guiding element 301, and the connection portion 3012 is inserted into the connection groove 2011 and forms a rotating connection with the rotating disc.

In this way, by providing the connecting slot 2011, the lower end of the guiding element 301 is provided with the connecting portion 3012, during installation, the connecting portion 3012 is inserted into the connecting slot 2011 and is rotationally connected with the turntable, that is, the guiding element 301 is stationary, and the turntable can rotate along with the hollow rotating platform 10, which is advantageous in that, in order to avoid abrasion caused by rotation between the connecting portion 3012 and the rotating disc 201, a rotating element such as a bearing, which is convenient for rotation, can be sleeved on the outer surface of the connecting portion 3012.

Preferably, in one embodiment of the present utility model, the valve body 50 includes a valve body 501, a sealing rod 502, and an adjusting seat 503.

The valve body 501 is arranged above the flow guide member 301, a mounting groove 5011 is formed in the upper end of the valve body 501, a through groove 5012 is formed in the bottom surface of the mounting groove 5011, and the through groove 5012 penetrates to the bottom surface of the valve body 501.

The sealing rod 502 is movably inserted into the through slot 5012, and the lower end of the sealing rod is inserted into the glue discharging channel 2021 to seal and open the glue discharging channel 2021.

The adjusting seat 503 is disposed at the upper end of the valve body 501, and is used to drive the sealing rod 502 to move up and down.

It should be noted that, the diameter of the sealing rod 502 is smaller than the diameter of the upper portion of the glue discharging channel 2021, so that glue can flow into the needle 403 assembly 40 from the gap between the inner wall of the glue discharging channel 2021 and the front portion of the sealing rod 502, and when dispensing, the sealing rod 502 can be adjusted to rise by the adjustment, so as to open the glue discharging channel 2021, thereby facilitating the outflow of glue, and when dispensing is completed, the sealing rod 502 can be driven to move downward by the adjustment seat 503, and the lower end of the glue discharging channel 2021 is sealed by the end portion, thereby avoiding the outflow of glue.

Preferably, in one embodiment of the present utility model, the adjusting seat 503 includes a housing 5031, a thimble member 5033, a movable plug 5034, and a return spring 5035.

The housing 5031 is disposed at the upper end of the valve body 501, a regulating valve 5032 is disposed in the housing 5031, and the regulating valve 5032 is screwed with the inner wall of the housing 5031.

The upper end of the ejector pin 5033 is connected to the regulating valve 5032, and the lower end extends into the mounting groove 5011.

The movable plug 5034 is disposed in the mounting groove 5011 and can slide along the height direction of the mounting groove 5011, and the upper end of the sealing rod 502 is disposed on the movable plug 5034 in a penetrating manner.

The return spring 5035 is sleeved on the thimble member 5033, and has one end abutting against the regulating valve 5032 and the other end abutting against the movable plug 5034.

The installation groove 5011 is communicated with an air inlet assembly 60, and is used for injecting air into the installation groove 5011 or exhausting air from the installation groove 5011 so as to drive the movable plug 5034 to move up and down.

It should be noted that, the edge of the movable plug 5034 abuts against the wall of the mounting groove 5011, so that the portion of the mounting groove 5011 located below the movable plug 5034 is in a sealed state, when the air intake assembly 60 is used for injecting air into the mounting groove 5011, the movable plug 5034 is pushed to move upward by the pressure generated by the air, and the upper end of the sealing rod 502 is connected to the movable plug 5034, so that the sealing rod 502 can be driven to move upward smoothly to open the glue discharging channel 2021, and correspondingly, when the air intake assembly 60 is used for extracting air from the mounting groove 5011, the return spring 5035 can press the movable plug 5034 to move downward, so as to seal the glue discharging channel 2021.

The ejector 5033 can limit the upward movement of the movable plug 5034, so as to prevent the movable plug 5034 from moving too much, and the adjusting valve 5032 can be used for adjusting the pressure of the return spring 5035 and the stroke of the movable plug 5034.

Preferably, in one embodiment of the present utility model, the intake assembly 60 includes an intake valve 601 and a solenoid valve 602.

The air inlet valve 601 is arranged on one side of the valve body 501, an air guide channel 6011 is arranged at the bottom end of the side wall of the mounting groove 5011, and the air inlet valve 601 is communicated with the air guide channel 6011.

The solenoid valve 602 is disposed above the intake valve 601 to control intake or exhaust of the intake valve 601.

Thus, when in use, the air inlet valve 601 is used to inject air into the installation groove 5011 of the air guide channel 6011 or to extract air from the installation groove 5011, and the electromagnetic valve 602 can control the air inlet valve 601 to inject air or extract air, so as to realize automatic control and effectively improve production efficiency.

Preferably, in one embodiment of the present utility model, a bottom surface of the mounting groove 5011 is provided with a step surface 5013 recessed downward, the step surface 5013 extends along a circumferential direction of the mounting groove 5011, a sealing ring 5014 is provided on the step surface 5013, and an upper end of the sealing rod 502 is inserted into the sealing ring 5014.

In this way, by providing the step surface 5013 recessed downward on the bottom surface of the installation groove 5011 and providing the seal ring 5014 on the step surface 5013, a seal can be formed between the seal ring 5014 and the movable plug 5034, thereby avoiding gas leakage into the installation groove 5011.

Preferably, in one embodiment of the present utility model, the needle 403 assembly 40 includes a connector 401, a lock nut 402, and a needle 403.

The connector 401 is internally provided with a sub-channel 4011, and the upper end of the sub-channel 4011 is communicated with the glue discharging channel 2021.

The lock nut 402 is sleeved on the surface of the connecting sleeve, so as to connect the connector 401 to the lower end of the rubber tube 202.

The needle 403 is disposed at the lower end of the connector 401 and is in communication with the sub-channel 4011, and the lower end of the needle 403 extends to the side of the needle 403 in a bending manner.

In this way, during installation, the connector 401 may be installed at the lower end of the rubber tube 202 through the lock nut 402, so that the sub-channel 4011 and the glue discharging channel 2021 may be communicated, so that glue may enter the needle 403 and flow out from the glue outlet of the needle 403, and the lower end of the needle 403 is bent and extended from the side surface of the needle 403, so that glue dispensing processing may be performed on a workpiece requiring glue dispensing on the side surface such as a hole wall.

Preferably, in one embodiment of the present utility model, the sub-channel 4011 comprises an upper channel section 40111 and a lower channel section 40112 which are connected up and down, the diameter of the upper channel section 40111 is larger than that of the lower channel section 40112, and the needle 403 is connected to the lower channel section 40112.

The lower channel section 40112 is sealed when the lower end of the sealing rod 502 abuts the upper end of the lower channel section 40112.

Thus, since the upper channel section 40111 has a larger diameter than the lower channel section 40112, the lower end of the sealing rod 502 can abut against the upper end of the lower channel section 40112 when the sealing rod 502 moves downward, thereby sealing the lower channel section 40112.

On the other hand, the dispensing device provided by the embodiment of the utility model is provided with the rotary dispensing valve.

So, through installing the rotary type dispensing valve as described above on the dispensing equipment, when using, can with the syringe needle 403 subassembly 40 stretches into to wait that the processing work piece waits to glue the hole inboard, and pass through cavity rotary platform 10 drive syringe needle 403 subassembly 40 is followed the rubber tube 202 axis rotates, thereby carries out annular or predetermined arc corner and carries out the point and glue along waiting to glue the hole inner wall, makes the point glue more convenient and fast, and the point glues more evenly, can satisfy higher point and glue the demand.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A rotary dispensing valve, comprising:

a hollow rotating platform;

the rotary table assembly comprises a rotary disc and a rubber tube, the rotary disc is connected to the hollow rotary platform and rotates along with the hollow rotary platform, the rubber tube is arranged in the middle of the bottom surface of the rotary disc, and a rubber discharging channel is arranged in the rubber tube;

the glue feeding assembly is arranged on one side of the hollow rotating platform and communicated with the glue discharging channel, and is used for conveying glue in the glue discharging channel;

the needle head assembly is arranged at the lower end of the rubber tube and is communicated with the rubber discharging channel, and the lower end of the needle head assembly is bent towards the side face of the needle head assembly;

the valve body is arranged above the hollow rotating platform, and the lower end of the valve body is connected with the rubber pipe and used for sealing and opening the rubber discharging channel.

2. The rotary dispensing valve of claim 1, wherein the glue inlet assembly comprises:

the guide piece is arranged on the upper surface of the hollow rotary platform, the lower end of the guide piece is connected with the rubber pipe, a first rubber inlet channel is arranged in the guide piece, and the first rubber inlet channel is communicated with the rubber discharge channel;

the adaptor is characterized by comprising an adaptor, one end of the adaptor is connected to the side face of the flow guiding piece, a second glue inlet channel is arranged in the adaptor, and one end of the second glue inlet channel is communicated with the first glue inlet channel;

the glue barrel is arranged at the other end of the adapter, and a glue outlet of the glue barrel is communicated with the other end of the second glue inlet channel.

3. The rotary dispensing valve according to claim 2, wherein a connecting groove is formed in the upper surface of the rotating disc, the connecting groove and the glue discharging channel are located on the same axis, a connecting portion is arranged at the lower end of the flow guiding piece, and the connecting portion is inserted into the connecting groove and is rotatably connected with the rotating disc.

4. The rotary dispensing valve of claim 2, wherein the valve body comprises:

the valve body is arranged above the flow guide piece, the upper end of the valve body is provided with a mounting groove, the bottom surface of the mounting groove is provided with a through groove, and the through groove penetrates to the bottom surface of the valve body;

the sealing rod can vertically movably penetrate through the through groove, and the lower end of the sealing rod is inserted into the glue discharging channel and used for sealing and opening the glue discharging channel;

the adjusting seat is arranged at the upper end of the valve body and used for driving the sealing rod to move up and down.

5. The rotary dispensing valve of claim 4, wherein the adjustment seat comprises:

the shell is arranged at the upper end of the valve body, an adjusting valve is arranged in the shell, and the adjusting valve is in threaded connection with the inner wall of the shell;

the upper end of the ejector pin piece is connected with the regulating valve, and the lower end of the ejector pin piece extends into the mounting groove;

the movable plug is arranged in the mounting groove and can slide along the height direction of the mounting groove, and the upper end of the sealing rod is arranged on the movable plug in a penetrating manner;

the reset spring is sleeved on the thimble piece, one end of the reset spring is propped against the regulating valve, and the other end of the reset spring is propped against the movable plug;

the installation groove is communicated with an air inlet component, and is used for injecting air or exhausting air into the installation groove so as to drive the movable piston to move up and down.

6. The rotary dispensing valve of claim 5, wherein the air intake assembly comprises:

the air inlet valve is arranged at one side of the valve body, an air guide channel is arranged at the bottom end of the side wall of the mounting groove, and the air inlet valve is communicated with the air guide channel;

and the electromagnetic valve is arranged above the air inlet valve and used for controlling air inlet or air exhaust of the air inlet valve.

7. The rotary dispensing valve of claim 4, wherein the bottom surface of the mounting groove is provided with a step surface recessed downward, the step surface extends along the circumferential direction of the mounting groove, a sealing ring is arranged on the step surface, and the upper end of the sealing rod is arranged in the sealing ring in a penetrating manner.

8. The rotary dispensing valve of claim 4, wherein the needle assembly comprises:

the connector is internally provided with a sub-channel, and the upper end of the sub-channel is communicated with the glue discharging channel;

the locking nut is sleeved on the surface of the connecting sleeve so as to connect the connector to the lower end of the rubber pipe;

the needle is arranged at the lower end of the connector and is communicated with the sub-channel, and the lower end of the needle is bent and extended to the side face of the needle.

9. The rotary dispensing valve of claim 8 wherein said sub-passageway comprises upper and lower passageway sections in up-down communication, said upper passageway section having a larger diameter than said lower passageway section, said needle in communication with said lower passageway section;

the lower channel section is sealed when the sealing rod lower end abuts against the lower channel section upper end.

10. A dispensing apparatus having a rotary dispensing valve as claimed in any one of claims 1 to 9.