CN220870174U

CN220870174U - Exhaust device

Info

Publication number: CN220870174U
Application number: CN202322822925.1U
Authority: CN
Inventors: 钟礼宝; 赵文青; 邓延居; 颜天宇; 张俊杰; 王明涛; 范津纬
Original assignee: Shandong Himile Valve Co ltd; Gaomi Tongchuang Valve Core Co ltd
Current assignee: Shandong Himile Valve Co ltd; Shandong Tongchuang Precision Technology Co ltd
Priority date: 2023-10-20
Filing date: 2023-10-20
Publication date: 2024-04-30
Anticipated expiration: 2033-10-20

Abstract

The utility model discloses an exhaust device, which belongs to the field of tire mold exhaust, and comprises a casing, wherein an inner cavity is arranged in the casing, a sleeve core is arranged in the inner cavity of the casing, one end of the sleeve core is provided with a shaft head, the other end of the sleeve core is provided with a stop block, the lower end of the casing is sleeved with a limit sleeve, the center of the limit sleeve is provided with a step hole, a spring is arranged in the step hole, and two ends of the spring are respectively abutted against the stop block and the step of the step hole; a plurality of sand discharging grooves are uniformly distributed on the circumference of the periphery of the stop block, and the inner cavity and the step holes can be communicated through the sand discharging grooves. The spring air hole sleeve can adapt to the sand blasting treatment process through the structure.

Description

Exhaust device

Technical Field

The utility model relates to the field of tire mold exhaust, in particular to an exhaust device.

Background

The application of the spring air hole sleeve greatly solves the problem of glue hair phenomenon in the vulcanization process, but still does not meet the requirements of modern dies for the spring air hole sleeve, and particularly the spring air hole sleeve which can use a sand blasting process.

At present, most of spring air hole sleeves for tire molds consist of an outer sleeve, an inner spring and a mandrel, the inner structural space of the spring air hole sleeves is smaller, sand blasting particles are easy to accumulate, and finally the exhaust function of the spring sleeves is affected.

In view of the above problems of the prior art, the present utility model combines years of design and experience in use with the related art, and aided with the strong expertise, designs and manufactures an exhaust device to overcome the above drawbacks.

Disclosure of utility model

For the problems existing in the prior art, the air vent device provided by the utility model can enable the spring air vent sleeve to adapt to the sand blasting process.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: an exhaust device comprises a casing, wherein an inner cavity is formed in the casing, a sleeve core is arranged in the inner cavity of the casing, one end of the sleeve core is provided with a shaft head, and the other end of the sleeve core is provided with a stop block;

The lower end of the sleeve shell is sleeved with a limiting sleeve, the center of the limiting sleeve is provided with a step hole, a spring is arranged in the step hole, and two ends of the spring are respectively abutted against the stop block and the step of the step hole;

A plurality of sand discharging grooves are uniformly distributed on the circumference of the periphery of the stop block, and the inner cavity and the step holes can be communicated through the sand discharging grooves.

Preferably, the sleeve core is axially movable along the housing cavity between a first position in which a gap is formed between the spindle head and the housing upper end cavity, and a second position in which the spindle head is in sealing engagement with the housing upper end cavity.

Preferably, the inner diameter of the spring is greater than the diameter of the lumen.

Preferably, the minimum aperture of the step hole is larger than or equal to the diameter of the inner cavity.

Preferably, the inner diameter of the spring is larger than the minimum aperture of the stepped hole.

Preferably, the step surface of the step hole is a taper surface, and one end of the spring is abutted against the taper surface.

Preferably, a positioning groove is formed in the bottom of the sleeve core, and the stop block is positioned in the positioning groove.

Preferably, the lower end of the sleeve core is used for positioning the stop block in the positioning groove through a structure after extrusion.

Preferably, the sleeve comprises a large-diameter section at the upper end and a small-diameter section at the lower end, wherein a limit sleeve is sleeved on the small-diameter section, and the upper end of the limit sleeve is abutted to steps of the large-diameter section and the small-diameter section.

Preferably, the small-diameter section of the sleeve is in interference fit with the stepped hole of the limit sleeve.

The utility model has the advantages that:

1. The spring for providing elastic force for the sleeve core is arranged at the bottom of the sleeve core, and meanwhile, the spring is positioned in a large independent inner cavity, so that sand is prevented from being stuck by the spring, and the product can be normally used after sand blasting.

2. The utility model discloses the internal diameter of spring is greater than the inner chamber diameter to make exhaust apparatus's exhaust passage be equivalent to being located the hole of spring, the sand grain can directly fall down in the hole of spring.

3. According to the utility model, a plurality of sand discharging grooves are uniformly distributed on the circumference of the periphery of the stop block, the inner cavity and the step hole can be communicated through the sand discharging grooves, sand grains can fall into the step hole through the sand discharging grooves and then are discharged through the exhaust hole at the bottom; and the stop block can be matched with the spring, so that the normal movement of the sleeve core is not influenced.

Drawings

FIG. 1 is a schematic illustration of an exhaust apparatus;

FIG. 2 is a top view of the stop of the present utility model;

FIG. 3 is a schematic representation of sand flow in accordance with the present utility model.

In the figure: 1-shell, 2-sleeve core, 3-stop collar, 4-stop block, 5-spring, 6-spindle nose, 7-large diameter section, 8-small diameter section, 9-inner cavity, 10-step hole, 11-taper surface and 12-sand discharge groove.

Detailed Description

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

As shown in fig. 1 to 3, an exhaust device comprises a casing 1, wherein an inner cavity 9 is arranged in the casing 1, a sleeve core 2 is arranged in the inner cavity 9 of the casing 1, one end of the sleeve core 2 is provided with a shaft head 6, the other end of the sleeve core 2 is provided with a stop block 4, the lower end of the casing 1 is sleeved with a limit sleeve 3, the center of the limit sleeve 3 is provided with a step hole 10, a spring 5 is arranged in the step hole 10, and two ends of the spring 5 are respectively abutted to steps of the stop block 4 and the step hole 10.

The sleeve core 2 can axially move along the inner cavity 9 of the sleeve shell 1 between a first position and a second position, a gap is formed between the shaft head 6 and the inner cavity 9 at the upper end of the sleeve shell 1 at the first position, the stop block 4 is abutted to the lower end of the sleeve shell 1, and the shaft head 6 is in sealing fit with the inner cavity 9 at the upper end of the sleeve shell 1 at the second position.

A plurality of sand discharging grooves 12 are uniformly distributed on the circumference of the periphery of the stop block 4, the inner cavity 9 and the step holes 10 can be communicated through the sand discharging grooves 12, the specific number of the sand discharging grooves 12 is preferably three, sand grains can fall into the step holes 10 through the sand discharging grooves 12, and then are discharged through the exhaust holes at the bottom; moreover, the stop block 4 can also be matched with the spring 5, and the normal movement of the sleeve core 2 is not influenced.

The spring 5 for providing elastic force for the sleeve core 2 is arranged at the bottom of the sleeve core 2, and meanwhile, the spring 5 is positioned in a large independent inner cavity 9, so that the inner diameter of the spring 5 is larger than the diameter of the inner cavity 9, sand is prevented from being jammed by the spring 5, and the product can be normally used after sand blasting.

The minimum aperture of the step hole 10 is preferably larger than or equal to the diameter of the inner cavity 9, sand grains are prevented from falling on steps of the step hole 10, the inner diameter of the spring 5 is larger than the minimum aperture of the step hole 10, so that the sand grains are prevented from being contacted with the spring 5, the spring 5 is prevented from clamping the sand grains, and the product can be normally used after sand blasting.

The step surface of the step hole 10 is preferably provided with a taper surface 11, and one end of the spring 5 is abutted against the taper surface 11, so that sand grains can automatically slide down even if falling on the step surface of the step hole 10, and accumulation of the sand grains on the step surface is avoided.

The bottom of the sleeve core 2 is provided with the positioning groove, the stop block 4 is positioned in the positioning groove, and the lower end of the sleeve core 2 is preferably positioned in the positioning groove through a structure after extrusion and flattening, so that the efficient batch processing is convenient.

The casing 1 specifically comprises a large-diameter section 7 at the upper end and a small-diameter section 8 at the lower end, wherein the small-diameter section 8 is sleeved with a limit sleeve 3, the small-diameter section 8 of the casing 1 is in interference fit with a step hole 10 of the limit sleeve 3, the upper end of the limit sleeve 3 is abutted on the steps of the large-diameter section 7 and the small-diameter section 8, the structure is convenient to install, the diameter of an inner cavity 9 is easily smaller than the maximum aperture of the step hole 10, and the installation of a spring 5 and the avoidance of falling sand grains by the spring 5 are facilitated.

It should be understood that these examples are for the purpose of illustrating the utility model only and are not intended to limit the scope of the utility model. Furthermore, it is to be understood that various changes, modifications and/or variations may be made by those skilled in the art after reading the technical content of the present utility model, and that all such equivalents are intended to fall within the scope of the present utility model as defined in the appended claims.

Claims

1. The exhaust device is characterized by comprising a casing (1), wherein an inner cavity (9) is formed in the casing (1), a sleeve core (2) is arranged in the inner cavity (9) of the casing (1), a shaft head (6) is arranged at one end of the sleeve core (2), and a stop block (4) is arranged at the other end of the sleeve core (2);

The lower end of the sleeve shell (1) is sleeved with a limit sleeve (3), the center of the limit sleeve (3) is provided with a step hole (10), a spring (5) is arranged in the step hole (10), and two ends of the spring (5) are respectively abutted to the stop block (4) and the step of the step hole (10);

A plurality of sand discharging grooves (12) are uniformly distributed on the circumference of the periphery of the stop block (4), and the inner cavity (9) and the step holes (10) can be communicated through the sand discharging grooves (12).

2. An exhaust device according to claim 1, characterized in that the core (2) is axially movable along the inner cavity (9) of the casing (1) between a first position, in which a gap is formed between the spindle head (6) and the inner cavity (9) at the upper end of the casing (1), and a second position, in which the spindle head (6) is in sealing engagement with the inner cavity (9) at the upper end of the casing (1), and in which the stop (4) abuts against the lower end of the casing (1).

3. An exhaust device according to claim 1, characterized in that the inner diameter of the spring (5) is larger than the diameter of the inner cavity (9).

4. An exhaust device according to claim 1, characterized in that the smallest diameter of the stepped bore (10) is equal to or larger than the diameter of the inner chamber (9).

5. An exhaust device according to claim 1, characterized in that the inner diameter of the spring (5) is larger than the smallest diameter of the stepped bore (10).

6. An exhaust device according to claim 1, characterized in that the step surface of the step hole (10) is provided as a taper surface (11), and that one end of the spring (5) abuts against the taper surface (11).

7. An exhaust device according to claim 1, characterized in that the bottom of the sleeve core (2) is provided with a positioning groove, in which the stop block (4) is positioned.

8. An exhaust device according to claim 7, characterized in that the lower end of the sleeve core (2) is provided with a stop (4) positioned in the positioning groove by means of a flattened structure.

9. An exhaust device according to claim 1, characterized in that the casing (1) comprises a large-diameter section (7) at the upper end and a small-diameter section (8) at the lower end, a limit sleeve (3) is sleeved on the small-diameter section (8), and the upper end of the limit sleeve (3) is abutted against the steps of the large-diameter section (7) and the small-diameter section (8).

10. An exhaust device according to claim 9, characterized in that the small diameter section (8) of the sleeve (1) is in interference fit with the stepped bore (10) of the stop collar (3).