CN217411296U

CN217411296U - Nozzle with backpressure function

Info

Publication number: CN217411296U
Application number: CN202220913660.9U
Authority: CN
Inventors: 孙志洪
Original assignee: Jiangsu Honghai Tire Technology Co ltd
Current assignee: Jiangsu Honghai Tire Technology Co ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-09-13
Anticipated expiration: 2032-04-20

Abstract

The utility model discloses a nozzle with backpressure function, including the stub bar, the piston rod, spring and ejection of compact joint, the inside cavity of ejection of compact head sets up, the front end is semi-circular cavity, semi-circular cavity tip is opened there is the export of style of calligraphy, the piston rod is equipped with the bellying with ejection of compact head inner space matched with, be equipped with the material export on the lower part piston rod of bellying, the piston rod sets up in the stub bar, the spring housing is established on the upper portion piston rod of bellying, the ejection of compact connects the front end and is connected with ejection of compact head rear end, spring one end and bellying contact, one end connects step face contact with the ejection of compact. The utility model provides an among the prior art nozzle leak the material easily, influence the problem of product appearance.

Description

Nozzle with backpressure function

Technical Field

The utility model relates to a nozzle with backpressure function belongs to rubber coating equipment technical field.

Background

With the development of new energy automobiles, the new energy automobiles cancel spare tires, cancel traditional internal combustion engines, use motors for driving, tire noise becomes the main noise of the new energy automobiles, and noise reduction tires and puncture prevention tires become the requirements of new energy automobile owners.

The noise-reducing tire and the puncture-preventing tire have the common point that a layer of glue is coated on the inner liner tread area in the tire, and the glue in a pipeline is coated on the inner liner tread area of the tire by using a special tool.

The special tool used for gluing in the current market is to use a cylindrical rod, and the cylindrical rod is contacted with the tire liner tread area, and glue is coated on the tire liner tread area through the cylindrical rod. Because the cylinder rod does not contain the check valve, the sizing material in the cylinder rod flows downwards when the tire gluing is finished due to the weight effect, so that the smooth coating in the tire is poor and uneven, and the appearance of the product is influenced.

SUMMERY OF THE UTILITY MODEL

For solving the not enough of prior art, the utility model aims to provide a nozzle with backpressure function has solved among the prior art nozzle and has leaked the material easily, influences the problem of product appearance.

In order to achieve the above object, the utility model adopts the following technical scheme:

a nozzle with a back pressure function comprises a discharge head, a piston rod, a spring and a discharge joint;

the discharge head is hollow, the front end of the discharge head is a semicircular cavity, and a linear outlet is formed in the end part of the semicircular cavity;

the piston rod is provided with a bulge matched with the inner space of the discharging head, and a material outlet is arranged on the piston rod at the lower part of the bulge;

the piston rod is arranged in the discharging head, the spring is sleeved on the piston rod on the upper portion of the protruding portion, the front end of the discharging connector is connected with the rear end of the discharging head, one end of the spring is in contact with the protruding portion, and the other end of the spring is in contact with the stepped surface of the discharging connector.

Furthermore, a groove is formed in the protruding portion, and a first sealing ring is installed in the groove.

Further, the diameter of the piston rod is larger than that of the semicircular cavity.

Furthermore, the interior of the discharging joint comprises a first stepped hole, a second stepped hole and a third stepped hole, the diameters of which are sequentially reduced;

the inner side surface of the first stepped hole is connected with the rear end of the discharging head;

the second step hole is used for placing a spring;

the third stepped hole is matched with the upper piston rod of the bulge.

Furthermore, a groove is formed in the third stepped hole, and a second sealing ring is installed in the groove.

Furthermore, the number of the material outlets is 4, and the material outlets are uniformly distributed along the central axis of the piston rod.

Furthermore, the discharging head, the piston rod, the spring and the discharging connector are made of cast iron.

The utility model discloses the beneficial effect who reaches:

1. by arranging the backpressure spring, the sealant can be quickly blocked from flowing out of the nozzle after the glue is coated, so that the sealant flowing out of the nozzle is prevented from entering the tire which is coated with the glue, the appearance of the tire is prevented from being influenced, the loss is reduced, and the cost is reduced;

2. each part in the nozzle can be detached, so that normal maintenance and repair are facilitated, and the nozzle is simple and convenient to operate.

Drawings

FIG. 1 is a general view of the nozzle of the present invention;

FIG. 2 is a cross-sectional view of the nozzle of the present invention;

fig. 3 is an exploded view of the nozzle of the present invention.

The meaning of the reference symbols in the figures: 1-discharging a stub bar; 2-a piston rod; 3-a first sealing ring; 4-a spring; 5-a discharge joint; 6-a second sealing ring; a 1-2-straight outlet; 2-1-boss; 2-2-material outlet; 2-3-grooves; 5-1-first stepped bore; 5-2-second stepped holes; 5-3-third stepped bore.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The embodiment discloses a nozzle with a back pressure function, as shown in fig. 1 and 2, comprising a discharge head 1, a piston rod 2, a first sealing ring 3, a spring 4, a discharge joint 5 and a second sealing ring 6.

As shown in figures 2 and 3, the outer part of the front end of the discharge head 1 is of a conical structure, a linear outlet 1-2 is formed in the lower part of the discharge head, sealant flows out of the linear outlet 1-2 to the tire liner tread area, and the linear outlet 1-2 is 1-3mm wide and 5-12mm long. The inside of the discharging head 1 is arranged in a hollow mode, the front end of the inside of the discharging head is a semicircular cavity, and the diameter of the semicircular cavity is the same as the length of the linear outlet 1-2.

The discharging connector 5 is fixedly connected with the discharging head 1 through threads, the discharging connector 5 comprises a first stepped hole 5-1, a second stepped hole 5-2 and a third stepped hole 5-3, the diameters of the first stepped hole 5-1, the second stepped hole 5-2 and the third stepped hole 5-3 are sequentially reduced, the inner side face of the first stepped hole 5-1 is connected with the rear end of the discharging head 1, the second stepped hole 5-2 is used for placing a spring 4, and the third stepped hole 5-3 is matched with the upper piston rod 2 of the boss 2-1.

With reference to fig. 2 and 3, the piston rod 2 is an open cavity structure, i.e., the lower part is closed, the upper part is open, the interior is hollow, and the diameter of the piston rod 2 is larger than that of the semicircular cavity. The middle part of the piston rod 2 is provided with a convex part 2-1, and the convex part 2-1 is provided with a groove 2-3. The bulge 2-1 is matched with the inner cavity of the discharge head 1, a pressure space (cavity B) is formed between the lower piston rod 2 of the bulge 2-1 and the inner cavity of the discharge head 1, a spring moving space (cavity A) is formed between the upper piston rod 2 of the bulge 2-1 and the inner cavity of the discharge head 1 and between the upper piston rod 2 of the bulge 2-1 and the inner cavity of the discharge head 5, and a discharge space (cavity C) is formed between the lower piston rod 2 and the front end inside the discharge head 1. The grooves 2-3 are used for installing the first sealing rings 3, the first sealing rings 3 play a sealing role, the cavity A is protected, and the situation that the sealing glue in the cavity B enters the cavity A to influence the performance of the spring in the cavity A is prevented. A plurality of material outlets 2-2 are uniformly distributed on the piston rod 2 at the front end of the convex part 2-1, the width of the material outlets 2-2 is 3-4mm, the length of the material outlets 2-2 is 6-12mm, and preferably 4 material outlets 2-2 are arranged in the embodiment.

A spring 4 is arranged in the cavity A, the spring 4 is coaxially sleeved on the piston rod 2 at the rear end, one end of the spring 4 is in contact with the bulge part 2-1, and the other end of the spring 4 is in contact with the step surface of the stepped hole in the discharging connector 5. The length of the spring 4 is 20-25mm, and the width of the spring 4 is 8-10 mm. The springs with different stresses are selected according to different application places, and the spring range is preferably 50-300N for the case of use in a sealant environment.

The discharge head 1, the piston rod 2, the discharge connector 5 and the spring 4 on the nozzle can be made of one of stainless steel, cast iron, copper and aluminum, and cast iron is preferably used in consideration of chemical reaction and metal hardness generated by the semi-finished rubber material and the stainless steel, the cast iron, the copper and the aluminum.

The specific implementation manner of this embodiment is as follows:

1. the nozzle is installed on a sealing glue pipeline, when the tire is coated with glue, the device applies pressure to the sealing glue, the sealing glue enters an inlet at the upper part of the piston rod 2 from the sealing glue pipeline, then flows downwards from the inlet to enter a piston material outlet 2-2 at the lower part of the piston rod 2, enters the cavity B from the piston material outlet 2-2, and when the cavity B is filled with the sealing glue, enough pressure is generated in the cavity B (when the pressure is more than 50N), the spring 4 is contracted by the pressure, the piston rod moves upwards, the sealing glue flows into the cavity C from the cavity B, when the cavity C is filled with the sealing glue, the sealing glue flows out from a linear outlet 1-2 of the cavity C, and the sealing glue is coated on a tire lining layer tread area.

2. When the tire is coated with glue, the device stops applying pressure to the sealant, only some residual pressure is left in the sealant pipeline connected with the nozzle, and the spring 4 in the nozzle cannot be contracted due to the small residual pressure, so that the bottom of the piston rod 2 is blocked by the linear outlet 1-2, and the residual sealant in the cavity B cannot flow out.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. The nozzle with the back pressure function is characterized by comprising a discharge head (1), a piston rod (2), a spring (4) and a discharge joint (5);

the discharging head (1) is hollow, the front end of the discharging head is a semicircular cavity, and the end part of the semicircular cavity is provided with a linear outlet (1-2);

the piston rod (2) is provided with a bulge part (2-1) matched with the inner space of the discharge head (1), and a material outlet (2-2) is formed in the piston rod (2) at the lower part of the bulge part (2-1);

the piston rod (2) is arranged in the discharging head (1), the spring (4) is sleeved on the piston rod (2) at the upper part of the bulge part (2-1), the front end of the discharging joint (5) is connected with the rear end of the discharging head (1), one end of the spring (4) is in contact with the bulge part (2-1), and the other end of the spring is in step surface contact with the discharging joint (5).

2. A nozzle with back pressure function according to claim 1, characterized in that the protrusion (2-1) is provided with a groove (2-3), and the groove (2-3) is provided with a first sealing ring (3).

3. A nozzle with back pressure function according to claim 1, characterized in that the piston rod (2) diameter is larger than the semi-circular chamber diameter.

4. The nozzle with back pressure function as claimed in claim 1, wherein the discharging connector (5) comprises a first stepped hole (5-1), a second stepped hole (5-2) and a third stepped hole (5-3) with sequentially decreasing diameters inside;

the inner side surface of the first stepped hole (5-1) is connected with the rear end of the discharging head (1);

the second stepped hole (5-2) is used for placing a spring (4);

the third stepped hole (5-3) is matched with the upper piston rod (2) of the bulge part (2-1).

5. A nozzle with back pressure function according to claim 4, characterized in that the third stepped hole (5-3) is provided with a groove therein, and the groove is provided with a second sealing ring (6).

6. A nozzle with back pressure function according to claim 1, characterized in that the number of the material outlets (2-2) is 4, and the material outlets are evenly distributed along the central axis of the piston rod (2).

7. The nozzle with back pressure function according to claim 1, characterized in that the discharge head (1), the piston rod (2), the spring (4) and the discharge connector (5) are made of cast iron.