CN215141603U

CN215141603U - Screw dispensing valve

Info

Publication number: CN215141603U
Application number: CN202120965671.7U
Authority: CN
Inventors: 李成文; 刘俊
Original assignee: Shanghai Daxiang Technology Co ltd
Current assignee: Shanghai Daxiang Technology Co ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2021-12-14
Anticipated expiration: 2031-05-08

Abstract

The utility model belongs to the technical field of the valve of dispensing, especially, for screw rod dispensing valve, the water-cooled double-layer valve comprises a valve body, one side fixed mounting of valve body has servo motor, be equipped with gluey chamber in the valve body, one side of gluing the chamber is run through fixed mounting and is advanced the rubber tube, glue and seted up the second circular slot on the chamber is close to one side inner wall of servo motor, glue and seted up first circular slot on the chamber is kept away from one side inner wall of second circular slot, glue and seted up on keeping away from one side inner wall of second circular slot and say, glue and say the screw rod is installed to the internal rotation, the second circular slot has seted up on being close to one side inner wall of servo motor and has rotated the hole. The utility model discloses a change of gluing intracavity pressure controls second ring-shaped piece and first circular slot separation and actuation to the flow of intracavity glue is glued in control that can be accurate, makes the flow that can come control glue through control servo motor's turned angle, and after stopping the point and gluing, the condition of glue water clock can not appear yet.

Description

Screw dispensing valve

Technical Field

The utility model relates to a dispensing valve technical field especially relates to screw rod dispensing valve.

Background

At present, the application of the dispensing equipment is very wide, and the dispensing equipment is widely applied to any procedure involving a dispensing process and fluid control in industrial production. The dispensing valve is one of important components in dispensing equipment, and has the main functions of realizing transportation of a glue medium and controlling glue stop.

However, with the extension of the service life of the existing screw dispensing machine, the thread of the screw is worn, the thread channel formed by the thread on the screw cannot continue to resist the glue solution, after the dispensing is stopped, the glue solution can continue to flow in the thread section, and the lower glue solution with certain viscosity can be dripped from the needle head, so that the valve can have the risk of dripping leakage after being closed, and therefore, the screw dispensing valve is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a valve is glued to screw rod point, controls second annular piece and first circular slot separation and actuation through the change of gluing intracavity pressure to the flow of intracavity glue is glued in control that can be accurate, makes the flow that can control glue through control servo motor's turned angle, and after stopping the point and gluing, the condition of glue water clock also can not appear.

The embodiment of the utility model is realized like this:

the embodiment of the utility model provides a screw dispensing valve, which comprises a valve body, wherein a servo motor is fixedly arranged on one side of the valve body, a glue cavity is arranged in the valve body, one side of the glue cavity is penetrated through and fixedly arranged with a glue inlet pipe, a second circular groove is arranged on the inner wall of one side of the glue cavity close to the servo motor, a first circular groove is arranged on the inner wall of one side of the glue cavity far away from the second circular groove, a glue channel is arranged on the inner wall of one side of the first circular groove far away from the second circular groove, a screw rod is rotatably arranged in the glue channel, a rotating hole is arranged on the inner wall of one side of the second circular groove close to the servo motor, a rotating shaft is rotatably arranged in the rotating hole in a penetrating way, the rotating shaft and one end of the screw rod, which are close to each other, one end of the rotating shaft, which is far away from the screw rod, is fixedly connected with an output shaft of the servo motor, a cylinder is slidably sleeved on the rotating shaft, a first annular block and a second annular block are fixedly arranged at the two ends of the cylinder respectively, the first annular block and the second annular block are respectively connected with the inner walls of the second circular groove and the first circular groove in a sliding mode.

Preferably, one side of the valve body, which is far away from the servo motor, is fixedly provided with a lock nut, and a rubber needle is fixedly sleeved on the lock nut.

Preferably, one side of the cylinder far away from the first annular block is fixedly provided with a glue outlet, one end of the glue outlet far away from the first annular block is fixedly connected with the inner wall of one side of the second circular groove far away from the first circular groove, and the glue outlet is sleeved on the cylinder in a sliding manner.

Preferably, the inner walls of the second annular block and the first annular block are fixedly sleeved with first sealing rings, and the two sealing rings are slidably sleeved on the rotating shaft in an interference manner.

Preferably, all fixed cover is equipped with the second sealing washer on the first annular piece, the inner wall sliding connection of the outer wall second circular slot of second sealing washer is in the same place, one side fixed mounting that first annular piece was kept away from to the second annular piece has the annular to seal up.

Preferably, the locking nut is provided with a glue outlet, the glue channel is communicated with the glue needle through the glue outlet, and the inner diameter of the glue outlet is smaller than the diameter of the screw.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a change of gluing intracavity pressure controls second ring-shaped piece and first circular slot separation and actuation to the flow of intracavity glue is glued in control that can be accurate, makes the flow that can come control glue through control servo motor's turned angle, and after stopping the point and gluing, the condition of glue water clock can not appear yet.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic sectional view of the valve body of the present invention;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

in the figure: 1. a valve body; 101. a glue cavity; 102. feeding a rubber tube; 103. a lock nut; 104. a rubber needle; 105. a first circular groove; 106. a second circular groove; 107. glue passage; 108. a screw; 109. a rotating shaft; 110. rotating the hole; 111. a cylinder; 112. a first ring block; 113. a second ring block; 114. a glue outlet hole; 2. a servo motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers 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," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, an embodiment of the present invention provides a screw dispensing valve, which includes a valve body 1, a servo motor 2 is fixedly installed on one side of the valve body 1, a glue cavity 101 is provided in the valve body 1, a glue inlet pipe 102 is fixedly installed through one side of the glue cavity 101, a second circular groove 106 is provided on an inner wall of the glue cavity 101 close to the servo motor 2, a first circular groove 105 is provided on an inner wall of the glue cavity 101 far from the second circular groove 106, a glue channel 107 is provided on an inner wall of the first circular groove 105 far from the second circular groove 106, a screw 108 is rotatably installed in the glue channel 107, a rotation hole 110 is provided on an inner wall of the second circular groove 106 close to the servo motor 2, a rotation shaft 109 is rotatably installed through the rotation hole 110, one end of the rotation shaft 109 close to the screw 108 is fixedly connected with one end of the screw 108, one end of the rotation shaft 109 far from the screw 108 is fixedly connected with an output shaft of the servo motor 2, the rotating shaft 109 is slidably sleeved with a cylinder 111, two ends of the cylinder 111 are respectively fixedly provided with a first annular block 112 and a second annular block 113, and the first annular block 112 and the second annular block 113 are respectively slidably connected with the inner walls of the second circular groove 106 and the first circular groove 105.

As shown in fig. 2-3, a lock nut 103 is fixedly installed on one side of the valve body 1 away from the servo motor 2, and a rubber needle 104 is fixedly sleeved on the lock nut 103.

One side of the first annular block 112, which is far away from the cylinder 111, is fixedly provided with a glue outlet 114, one end of the glue outlet 114, which is far away from the first annular block 112, is fixedly connected with the inner wall of one side of the second circular groove 106, which is far away from the first circular groove 105, and the glue outlet 114 is slidably sleeved on the cylinder 111.

The inner walls of the second annular block 113 and the first annular block 112 are fixedly sleeved with first sealing rings, and the two sealing rings are slidably sleeved on the rotating shaft 109 in an interference manner.

The first annular block 112 is fixedly sleeved with a second sealing ring, the inner wall of the outer wall of the second sealing ring and the inner wall of the second circular groove 106 are connected together in a sliding mode, and an annular sealing gasket is fixedly mounted on one side, away from the first annular block 112, of the second annular block 113.

Specifically, the first sealing ring, the second sealing ring and the annular sealing gasket improve the sealing performance of the glue cavity 101, and the situation of glue leakage cannot occur.

As shown in fig. 2, the lock nut 103 is provided with a glue outlet 114, the glue passage 107 is communicated with the glue needle 104 through the glue outlet 114, and the inner diameter of the glue outlet 114 is smaller than the diameter of the screw 108.

Specifically, the lock nut 103 is provided with a glue outlet 114, the glue passage 107 is communicated with the glue needle 104 through the glue outlet 114, and the inner diameter of the glue outlet 114 is smaller than the diameter of the screw 108.

The working principle is as follows: in the dispensing process, a rubber delivery pipe is connected outside the rubber inlet pipe 102, and the rubber is injected into the rubber cavity 101 through the rubber inlet pipe 102, with the continuous increase of the rubber in the rubber cavity 101, the internal pressure will continuously increase, when the thrust generated by the pressure on the first annular block 112 is greater than the elastic force of the rubber outlet hole 114, the rubber outlet hole 114 will be compressed, and at the same time, when the first annular block 112 drives the second annular block 113 to separate from the first circular groove 105 through the cylinder 111, the rubber will enter the rubber channel 107, then the servo motor 2 is started, the servo motor 2 drives the screw rod 108 to rotate through the rotating shaft 109, the rubber in the rubber channel 107 will continuously enter the rubber outlet hole 114 through the thread track on the screw rod 108 and finally flow out through the rubber needle 104, when dispensing is not performed, no more rubber enters the rubber in the rubber cavity 101, so that the pressure in the rubber cavity 101 will decrease, when the thrust generated by the pressure on the first annular block 112 is less than the elastic force of the rubber outlet hole 114, the glue outlet 114 is reset and elongated again, and simultaneously the first annular block 112 drives the second annular block 113 to enter the first circular groove 105 through the cylinder 111, so that the glue in the glue cavity 101 does not flow into the glue channel 107 any more, and when the screw 108 does not rotate any more, the thread formed on the screw 108 acts as a resistance to the glue, so that the glue in the glue channel 107 does not flow out of the glue needle 104.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Screw rod dispensing valve, including valve body (1), its characterized in that: one side of the valve body (1) is fixedly provided with the servo motor (2), a rubber cavity (101) is arranged in the valve body (1), one side of the rubber cavity (101) is penetrated through and fixedly provided with a rubber inlet pipe (102), one side inner wall of the rubber cavity (101) close to the servo motor (2) is provided with a second circular groove (106), one side inner wall of the rubber cavity (101) far away from the second circular groove (106) is provided with a first circular groove (105), one side inner wall of the first circular groove (105) far away from the second circular groove (106) is provided with a rubber channel (107), the rubber channel (107) is rotatably provided with the screw rod (108), one side inner wall of the second circular groove (106) close to the servo motor (2) is provided with a rotating hole (110), the rotating hole (110) is rotatably provided with a rotating shaft (109), and one end of the rotating shaft (109) and the screw rod (108) are fixedly connected together, the one end that screw rod (108) were kept away from in pivot (109) is in the same place with the output shaft fixed connection of servo motor (2), sliding sleeve is equipped with drum (111) on pivot (109), the both ends of drum (111) fixed mounting respectively have first annular piece (112) and second annular piece (113), first annular piece (112) and second annular piece (113) respectively with second circular slot (106) with the inner wall sliding connection of first circular slot (105) be in the same place.

2. The screw dispensing valve of claim 1, wherein: one side of the valve body (1) far away from the servo motor (2) is fixedly provided with a lock nut (103), and a rubber needle (104) is fixedly sleeved on the lock nut (103).

3. The screw dispensing valve of claim 1, wherein: one side of the first annular block (112) far away from the cylinder (111) is fixedly provided with a glue outlet hole (114), one end of the glue outlet hole (114) far away from the first annular block (112) is fixedly connected with the inner wall of one side of the second circular groove (106) far away from the first circular groove (105), and the glue outlet hole (114) is sleeved on the cylinder (111) in a sliding manner.

4. The screw dispensing valve of claim 1, wherein: and the inner walls of the second annular block (113) and the first annular block (112) are fixedly sleeved with first sealing rings, and the two sealing rings are slidably sleeved on the rotating shaft (109) in an interference manner.

5. The screw dispensing valve of claim 1, wherein: all fixed cover is equipped with the second sealing washer on first annular piece (112), the inner wall sliding connection of outer wall second circular slot (106) of second sealing washer is in the same place, one side fixed mounting that first annular piece (112) were kept away from in second annular piece (113) has the annular to seal up.

6. The screw dispensing valve of claim 2, wherein: the locking nut (103) is provided with a glue outlet (114), the glue channel (107) is communicated with the glue needle (104) through the glue outlet (114), and the inner diameter of the glue outlet (114) is smaller than the diameter of the screw (108).