CN213383106U

CN213383106U - High-performance spring air hole sleeve

Info

Publication number: CN213383106U
Application number: CN202022181373.7U
Authority: CN
Inventors: 吴文朝
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-06-08
Anticipated expiration: 2030-09-29

Abstract

A high-performance spring air hole sleeve comprises a valve shell, a mandrel and a spring, wherein a frustum part and a spigot part are arranged at two ends of the mandrel, a taper hole which is in sealing fit with the frustum part of the mandrel is arranged at one end of a hole cavity of the valve shell, the spigot part of the mandrel is limited at a gear part outside the valve shell at the other end of the hole cavity of the valve shell, the spring is sleeved on the mandrel, and two ends of the spring are respectively abutted against the frustum part and the gear part; the top end of the spigot part of the mandrel or the top end of the gear part of the valve shell is provided with a notch groove to form a multi-flap structure; the valve shell is integrally in a cylindrical step shape, the end part of the outer cylinder of the gear part is a conical surface, and the surface of the outer cylinder at the conical hole is provided with a plurality of circumferential grooves which are arranged in parallel; the connecting part of the frustum part and the shaft body of the mandrel is provided with a transition shaft section with the diameter larger than that of the shaft body, an arc-shaped annular groove is arranged at the connecting point of the transition shaft section and the frustum part, and the end face of the frustum part of the mandrel is in a mushroom head shape. The utility model discloses can be higher with the cooperation precision of mould gas vent, stability is better, and exhaust effect is better, vulcanizes the back product and beautifully levels, and product quality is better.

Description

High-performance spring air hole sleeve

Technical Field

The utility model relates to a tire vulcanization forming die's exhaust annex, especially a high performance spring gas pocket cover belong to tire vulcanization technical field.

Background

Conventionally, in the manufacture of a tire, it is known that in a mold for vulcanizing a green tire having been subjected to a molding process, it is necessary to discharge air between the green tire and the mold, and a plurality of air discharge ports are provided in the mold. When the tire is vulcanized, the exhaust port is directly utilized for exhausting, and the rubber can penetrate through the exhaust port to overflow, so that a lot of overflowed rubber is formed on the tire after vulcanization is finished.

The structure of the vent sleeve generally comprises a shell and a valve body, wherein the valve body is arranged in the shell, one end of the valve body is limited outside the shell, and a vent notch is formed in a shell at the end part; the other end of the valve body is matched with the shell through a sealing surface, and the end part of the air hole sleeve is directly arranged in the air outlet; the valve body is provided with a spring, the seal of the valve body and the shell is disconnected by the spring in an initial state, and the gas in the die cavity is discharged by the disconnected seal.

In whole use, require than higher to the installation cooperation degree of gas pocket cover in the gas vent, the easy production of too pine is rocked, influences the result of use, has the risk that drops, and too tightly then there is the shortcoming of the not convenient to dismantle change.

In addition, the valve body of the air hole sleeve is directly contacted with the tire rubber, and the depth of the valve body penetrating into the rubber influences the appearance of the tire. The end face of the valve body of the existing air hole sleeve is a plane, when the valve body and the shell generate axial position difference, a groove with obvious section difference can be generated on a tire, when the valve body and the shell are integrally installed, uneven appearance is easily generated on the tire tread, and particularly, the appearance is more obvious on the cambered surface of the tire tread, so that the product quality is influenced.

Disclosure of Invention

In order to overcome the above-mentioned not enough of prior art, the utility model provides a high performance spring gas pocket cover, this spring gas pocket cover is higher with the cooperation precision of mould gas vent, and stability is better, and exhaust effect is better, vulcanizes the back product and beautifully levels, and product quality is better.

The utility model provides a technical scheme that its technical problem adopted is: the mandrel is arranged in the valve shell, the valve shell is provided with a through hole cavity, one end of the hole cavity is a taper hole in sealing fit with the frustum part of the mandrel, the other end of the hole cavity is a gear part limiting the spigot part of the mandrel outside the valve shell, the spring is sleeved on the mandrel, and two ends of the spring are respectively abutted against the end faces of the frustum part and the gear part; the top end of the spigot part of the mandrel is provided with a notch groove A to form a multi-flap structure of the spigot part, the notch groove A extends to the shaft body of the mandrel along the axial direction of the mandrel, or the top end of the gear part of the valve casing is provided with a notch groove B to form a multi-flap structure of the position, and the notch groove B extends to the valve body of the valve casing along the axial direction of the valve casing; the valve shell is integrally in a two-stage cylindrical step shape, the outer diameter of a second outer cylinder corresponding to the taper hole is larger than that of a first outer cylinder corresponding to the gear part, the end part of the first outer cylinder is a conical surface, and a plurality of circumferential grooves which are arranged in parallel are formed on the surface of the second outer cylinder; the connecting part of the frustum part and the shaft body of the mandrel is provided with a transition shaft section with the diameter larger than that of the shaft body, an arc-shaped annular groove is arranged at the connecting point of the transition shaft section and the frustum part, and the end surface of the frustum part of the mandrel is set into a mushroom head shape.

Compared with the prior art, the utility model discloses a high performance spring gas pocket cover through set up all annular in the valve casing outside, plays the effect of running out of gas, has finally reached and has improved the installation accuracy, prevents the purpose of rocking. The design of the arc-shaped ring groove can reduce the corner cleaning of the contact part, so that the positioning is more reliable, better matching precision is further ensured, the shaking is prevented, and the using effect is good; the structural strength of sealed face lower part can be strengthened in the design of transition shaft section, and the stress point is not fragile when dismantling, reaches high-efficient dismouting, the reuse of being convenient for. The mushroom head type valve core end face is adopted, so that a section difference is not easy to generate when the tire is vulcanized, the appearance of the vulcanized tire is improved, and the product quality is improved. In conclusion, the comprehensive use performance of the spring air hole sleeve is greatly improved.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a first mandrel of the present invention.

Fig. 2a is a front view of a first valve housing according to the present invention in a half-section.

Fig. 2b is a left side view of a first valve housing of the present invention.

Fig. 2c is an assembly view of the first mandrel and the first valve casing, wherein the valve casing is shown in a half-section form, and the spring is omitted.

Fig. 3a is a front view of the second valve casing of the present invention in half section.

Fig. 3b is a left side view of a second valve housing of the present invention.

Fig. 3c is an assembly view of the first mandrel and the second valve housing of the present invention, wherein the valve housing is shown in a half-sectional form and the spring is omitted.

Fig. 4a is a front view of a third valve housing of the present invention in half section.

Fig. 4b is a left side view of a third valve housing according to the present invention.

Fig. 4c is an assembly view of the first mandrel and the third valve casing, wherein the valve casing is shown in a half-section form, and the spring is omitted.

Fig. 5 is a schematic structural diagram of a second mandrel of the present invention, which is used for assembling with the first, second and third valve casings.

Fig. 6 is a schematic structural view of a third mandrel of the present invention.

Fig. 7 is a schematic structural view of a fourth mandrel according to the present invention.

Fig. 8 is a front view, partly in section, of a fourth valve housing according to the present invention, for use with the third and fourth mandrels.

Fig. 9 is a front view of a fifth valve housing of the present invention in half section for use with the third and fourth mandrels.

Fig. 10 is a front view, partly in section, of a sixth valve housing according to the invention, for use with the third and fourth mandrels.

In the figure, 100, a mandrel, 101, a spigot portion, 102, a shaft body, 103, a transition shaft section, 104, a frustum portion, 105, a mushroom head shape, 106, an arc-shaped ring groove, 107, a notch groove A, 200, a valve casing, 201, a first outer cylinder, 202, a second outer cylinder, 203, a taper hole, 204, a circumferential ring groove, 205, a bore, 206, a notch groove B, 207 and a retainer portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first preferred embodiment:

as shown in fig. 1, 2a, 2b and 2c, the high performance spring air hole sleeve provided by the present embodiment includes a valve housing 200, a mandrel 100 and a spring, wherein two ends of the mandrel 100 are respectively a cone portion 104 and a spigot portion 101, the mandrel 100 is installed in the valve housing 200, the valve housing 200 has a through hole 205, one end of the hole 205 is a cone hole 203 which is in sealing fit with the cone portion 104 of the mandrel 100, the other end is a stopper portion 207 which limits the spigot portion 101 of the mandrel 100 outside the valve housing 200, and the spring sleeve is arranged on the mandrel 100, and two ends of the spring sleeve respectively abut against end faces of the cone portion 104 and the stopper portion 207; the valve housing 200 is provided with a notch B206 at the top end of the gear portion 207 to form a multi-lobe structure at the position, and the notch B206 extends to the valve body along the axial direction of the valve housing 200; the valve casing 200 has a two-stage cylindrical step shape as a whole, and comprises a second outer cylinder 202 corresponding to the tapered hole 203 and a first outer cylinder 201 corresponding to the gear portion 207, wherein the outer diameter of the second outer cylinder 202 is larger than that of the first outer cylinder 201, and preferably, the joint of the first outer cylinder 201 and the second outer cylinder 202 of the valve casing 200 is in a conical surface transition; the end part of the first outer cylinder 201 is a conical surface, and the surface of the second outer cylinder 202 is provided with a plurality of peripheral annular grooves 204 which are arranged in parallel; the junction of the frustum part 104 and the shaft body 102 of the mandrel 100 is provided with a transition shaft section 103 with a diameter larger than that of the shaft body 102, obviously, the diameter of the transition shaft section 103 needs to be smaller than the minimum diameter of the frustum part 104, the junction of the transition shaft section 103 and the frustum part 104 is provided with an arc-shaped annular groove 106, and the end surface of the frustum part 104 of the mandrel 100 is provided with a mushroom head shape 105.

In this embodiment, the seam allowance part 101 is a combination of a cylinder and a round-nose cone. Valve casing 200's fender position portion 207 is the step hole, and the big aperture end of step hole is located the outside, and the biggest aperture of step hole is less than the internal diameter of vestibule 205. In order to satisfy the design function of the structure itself, the minimum bore diameter of the stepped bore needs to be larger than the diameter of the shaft body 102 of the mandrel and smaller than the maximum outer diameter of the spigot portion 101 of the mandrel 100, and the maximum bore diameter of the stepped bore is smaller than the maximum outer diameter of the spigot portion 101 of the mandrel 100.

In a preferred embodiment, when the circumferential grooves 204 are plural, the circumferential grooves 204 communicate with each other through longitudinal grooves parallel to the axial direction and then extend to the step transition position of the valve housing 200. Specifically, the longitudinal grooves are one or two/more in circumferential symmetrical distribution. The effect in vertical breach groove is fixed mounting position, prevents to rock, further promotes the installation accuracy.

In a preferred embodiment, the bore 205 of the valve housing 200 is chamfered at the mating end of the spigot 101 and at the inner shoulder thereof to facilitate the insertion and removal of the mandrel 100 from the bore 205 of the valve housing 200.

The second preferred embodiment:

as shown in fig. 1, fig. 3a, fig. 3b and fig. 3c, the present embodiment provides a high performance spring porous sleeve, which is different from the first preferred embodiment in that in the present embodiment, the gear portion 207 of the valve housing 200 is a cylindrical hole, and the diameter of the cylindrical hole is smaller than the inner diameter of the bore 205. In order to satisfy the design function of the structure itself, the bore diameter of the cylindrical hole needs to be larger than the diameter of the shaft body 102 of the mandrel 100 and smaller than the maximum outer diameter of the spigot portion 101 of the mandrel 100.

The third preferred embodiment:

as shown in fig. 1, 4a, 4b and 4c, the present embodiment provides a high performance spring air hole sleeve, which is different from the first preferred embodiment in that in the present embodiment, the stop portion 207 of the valve housing 200 is a conical hole, a large diameter opening of the conical hole is located at the outer side, and a maximum diameter of the conical hole is smaller than the inner diameter of the bore 205. In order to satisfy the design function of the structure itself, the maximum bore diameter of the conical bore needs to be larger than the diameter of the shaft body 102 of the mandrel 100 and smaller than the maximum outer diameter of the spigot portion 101 of the mandrel 100.

The preferred embodiment four:

as shown in fig. 5, fig. 2a, fig. 2b and fig. 2c, the present embodiment provides a high performance spring air hole sleeve, which is different from the first preferred embodiment in that in the present embodiment, the spigot portion 101 is a truncated cone, which is the same as the combination of a cylinder and a truncated cone, and is beneficial to increasing the force application contact area, so as to facilitate rapid assembly and disassembly.

Preferred embodiment five:

as shown in fig. 5, fig. 3a, fig. 3b and fig. 3c, the present embodiment provides a high performance spring porous sleeve, which is different from the second preferred embodiment in that in the present embodiment, the spigot portion 101 is a truncated cone.

Preferred embodiment six:

as shown in fig. 5, 4a, 4b and 4c, the present embodiment provides a high performance spring porous sleeve, which is different from the third preferred embodiment in that in the present embodiment, the spigot 101 is a truncated cone.

The preferred embodiment is seven:

as shown in fig. 6 and 8, the present embodiment provides a high performance spring air hole sleeve, which is different from the first preferred embodiment in that, in the present embodiment, the mandrel 100 is provided with a notch a107 at the top end of the spigot portion 101 to form a multi-lobe configuration of the spigot portion 101, and the notch a107 extends to the shaft body 102 of the mandrel 100 along the axial direction.

Preferred embodiment eight:

as shown in fig. 6 and 9, the present embodiment provides a high performance spring porous sleeve, which is different from the seventh preferred embodiment in that in the present embodiment, the gear portion 207 of the valve housing 200 is a cylindrical hole, and the diameter of the cylindrical hole is smaller than the inner diameter of the bore 205.

The preferred embodiment is nine:

as shown in fig. 6 and 10, the present embodiment provides a high performance spring air hole sleeve, which is different from the seventh preferred embodiment in that in the present embodiment, the stop portion 207 of the valve housing 200 is a conical hole, the large diameter opening of the conical hole is located at the outer side, and the maximum diameter of the conical hole is smaller than the inner diameter of the bore 205.

Preferred embodiment ten:

as shown in fig. 7 and 8, the present embodiment provides a high performance spring air hole sleeve, which is different from the seventh preferred embodiment in that in the present embodiment, the spigot portion 101 is a truncated cone.

The preferred embodiment eleven:

as shown in fig. 7 and fig. 9, the present embodiment provides a high performance spring air hole sleeve, which is different from the seventh preferred embodiment in that in the present embodiment, the spigot portion 101 is a truncated cone.

Preferred embodiment twelve:

as shown in fig. 7 and 10, the present embodiment provides a high performance spring air hole sleeve, which is different from the seventh preferred embodiment in that in the present embodiment, the spigot portion 101 is a truncated cone.

Before the utility model is used, the valve shell 200, the mandrel 100 and the spring are assembled to obtain the finished spring air hole sleeve, at the moment, the sealing fit between the valve shell 200 and the mandrel 100 is removed under the action of the spring, namely, the frustum part 104 of the mandrel 100 is not contacted with the taper hole 203 of the valve shell 200, then a plurality of spring air hole sleeves are respectively arranged in each exhaust port of a forming die, and then vulcanization treatment is carried out; the excessive gas enters the cavity 205 of the valve housing 200 through the clearance between the frustum part 104 of the mandrel 100 and the taper hole 203 of the valve housing 200 during vulcanization and is discharged to the outside through the notch groove A107 or the notch groove B206, and the sealing fit between the valve housing 200 and the mandrel 100 is formed under the action of external force when vulcanization is finished; and taking out the vulcanized tire, so that the external force disappears, the spring air hole sleeve is restored to the initial state under the elastic force restoring action of the spring, and then the spring air hole sleeve is detached from the air outlet one by one and can be repeatedly used for next tire vulcanization mold cavity air exhaust.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do the restriction in any form, all basis the utility model discloses a technical essence makes any simple modification and equal change to above embodiment, all falls into within the protection scope of the utility model.

Claims

1. A high-performance spring air hole sleeve comprises a valve shell (200), a mandrel (100) and a spring, wherein a frustum part (104) and a spigot part (101) are respectively arranged at two ends of the mandrel (100), the mandrel (100) is installed in the valve shell (200), the valve shell (200) is provided with a hole cavity (205) which is through up and down, one end of the hole cavity (205) is a tapered hole (203) which is in sealing fit with the frustum part (104) of the mandrel (100), the other end of the hole cavity is a stop part (207) which limits the spigot part (101) of the mandrel (100) to the outside of the valve shell (200), the spring is sleeved on the mandrel (100), and two ends of the spring are respectively abutted against the end faces of the frustum part (104) and the stop part (207); the method is characterized in that: the mandrel (100) is provided with a notch A (107) at the top end of the spigot part (101) to form a multi-flap structure of the spigot part (101), the notch A (107) extends to the shaft body (102) of the mandrel (100) along the axial direction, or the valve casing (200) is provided with a notch B (206) at the top end of the gear part (207) to form the multi-flap structure of the position, and the notch B (206) extends to the valve body of the valve casing (200) along the axial direction; the valve shell (200) is integrally in a two-stage cylindrical step shape, the outer diameter of a second outer cylinder (202) corresponding to the tapered hole (203) is larger than the outer diameter of a first outer cylinder (201) corresponding to the stop part (207), the end part of the first outer cylinder (201) is a conical surface, and a plurality of circumferential grooves (204) which are arranged in parallel are formed on the surface of the second outer cylinder (202); the connecting part of the frustum part (104) and the shaft body (102) of the mandrel (100) is provided with a transition shaft section (103) with the diameter larger than that of the shaft body (102), an arc-shaped annular groove (106) is arranged at the connecting point of the transition shaft section (103) and the frustum part (104), and the end face of the frustum part (104) of the mandrel (100) is arranged into a mushroom head shape (105).

2. The high performance spring pocket of claim 1, further comprising: when the number of the circumferential ring grooves (204) is multiple, the circumferential ring grooves (204) are communicated through longitudinal grooves parallel to the axial direction and then extend to the step transition position of the valve shell (200).

3. The high performance spring pocket of claim 2, wherein: the longitudinal grooves are one or two/more in circumferential symmetrical distribution.

4. A high performance spring vent sleeve as defined in claim 1 or 2, wherein: the stop opening part (101) is a truncated cone body or a combination body of a cylinder and a round-head cone.

5. The high performance spring pocket of claim 4, wherein: the blocking portion (207) of the valve shell (200) is a cylindrical hole, and the aperture of the cylindrical hole is smaller than the inner diameter of the hole cavity (205).

6. The high performance spring pocket of claim 4, wherein: the position blocking portion (207) of the valve casing (200) is a step hole, the large-hole-diameter end of the step hole is located on the outer side, and the maximum hole diameter of the step hole is smaller than the inner diameter of the hole cavity (205).

7. The high performance spring pocket of claim 4, wherein: the blocking part (207) of the valve shell (200) is a conical hole, a large-diameter opening of the conical hole is positioned on the outer side, and the maximum diameter of the conical hole is smaller than the inner diameter of the hole cavity (205).

8. A high performance spring vent sleeve according to claim 1, 2 or 3, wherein: the junction of the first outer cylinder (201) and the second outer cylinder (202) of the valve housing (200) is in conical transition.

9. A high performance spring vent sleeve according to claim 1, 2 or 3, wherein: a hole cavity (205) of the valve shell (200) is provided with chamfer structures at the hole end matched with the stop part (101) and the inner hole shoulder.