CN213198437U - Split type spring air exhaust sleeve - Google Patents
Split type spring air exhaust sleeve Download PDFInfo
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- CN213198437U CN213198437U CN202021908060.0U CN202021908060U CN213198437U CN 213198437 U CN213198437 U CN 213198437U CN 202021908060 U CN202021908060 U CN 202021908060U CN 213198437 U CN213198437 U CN 213198437U
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- sleeve
- mandrel
- split type
- spring
- limiting block
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Abstract
The utility model discloses a split type spring exhaust sleeve, which comprises a sleeve and a mandrel coaxially and movably arranged in the sleeve, wherein a spring is sleeved on the periphery of the mandrel, and the mandrel comprises an upper mandrel and a lower mandrel which are detachably connected; the upper end of the upper core shaft is provided with a first limiting block, and the lower end of the lower core shaft is provided with a second limiting block; the sleeve comprises an upper sleeve and a lower sleeve which are detachably connected; the second limiting block is positioned outside the lower sleeve. The utility model has novel structure, the detachable mandrel and sleeve are convenient for the spring exhaust sleeve to be arranged, and the spring exhaust sleeve does not need to be discarded and replaced integrally when partial parts are damaged, thereby effectively saving and utilizing resources; the utility model adopts the fixed block to effectively prevent the mandrel from skewing when reciprocating; the first notch that the sleeve pipe lower extreme was seted up is favorable to the dabber to pull out convenient operation when inserting, and can play the effect that auxiliary gas discharges better.
Description
Technical Field
The utility model relates to a tire vulcanization technical field specifically is a split type spring air discharge sleeve.
Background
The process of tyre manufacture requires a heat-curing stage, where the green tyre is loaded onto a curing press and cured in a mould for a suitable time and at a suitable elevated temperature to form the finished tyre. In the heating and vulcanizing stage, the air in the mold needs to be exhausted, and the common exhaust hole sleeve can leave tire hair on the surface of the tire, so that the tire is required to be trimmed and the appearance is influenced. In view of the above, spring venting sleeves have been developed.
Currently, the existing spring venting sleeves generally include a sleeve-shaped sleeve, a mandrel coaxially sleeved in the outer sleeve, and a spring sleeved on the mandrel. In practical application, the spring air sleeve is embedded into the exhaust hole by utilizing the exhaust hole which is formed in the mold and penetrates through the mold cavity and the external exhaust equipment, and the end of the sealing matching surface of the sleeve is flush with the wall of the mold cavity. The spring exhaust sleeve is easy to block or damage after being used for a long time due to factors such as rubber infiltration or elastic fatigue; and because a large number of exhaust holes are always formed in one die, the maintenance one by one, the integral extraction and the replacement of the spring exhaust sleeve become extremely complicated and unrealistic, and the problem of sudden rise of the cost is caused by the integral replacement one by one.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a split type spring air discharge sleeve can dismantle the worse damaged part, saves manufacturing cost and human cost.
In order to achieve the above object, the utility model provides a following technical scheme:
a split type spring exhaust sleeve comprises a sleeve and a mandrel coaxially and movably arranged in the sleeve, wherein a spring is sleeved on the periphery of the mandrel, and the mandrel comprises an upper mandrel and a lower mandrel which are detachably connected; the sleeve comprises an upper sleeve and a lower sleeve which are detachably connected; go up the dabber upper end and be equipped with first stopper, the dabber lower extreme has the second stopper down, the second stopper is located the lower sleeve pipe is outside.
As a further aspect of the present invention: the upper mandrel and the lower mandrel are in threaded connection; the upper casing and the lower casing are in threaded connection.
As a further aspect of the present invention: the lower end surface of the upper mandrel is upwards provided with a threaded hole; and the upper end of the lower mandrel is provided with an external thread matched with the threaded hole.
As a further aspect of the present invention: the lower sleeve is axially provided with first notches along the side wall of the lower sleeve, the open ends of the first notches are positioned at the lower end of the lower sleeve, and the first notches are uniformly distributed at the lower end of the lower sleeve (12) and the number of the first notches is at least two.
As a further aspect of the present invention: and a second notch is formed in the lower mandrel along the axial direction of the lower end face of the lower mandrel, and the open end of the second notch is positioned on the lower end face of the lower mandrel.
As a further aspect of the present invention: and the outer wall of the upper mandrel below the first limiting block is provided with at least two fixing blocks, and the end faces of the fixing blocks are abutted against the inner wall of the sleeve.
As a further aspect of the present invention: one end of the spring abuts against the lower end of the fixed block, and the other end of the spring abuts against the upper end of the first limiting block.
As a further aspect of the present invention: the first limiting block is of a circular truncated cone structure, and the diameter of the circular truncated cone structure is gradually reduced from top to bottom.
As a further aspect of the present invention: the top of the upper sleeve is a conical hole, and an annular sealing gasket matched with the circular truncated cone structure is arranged on the inner wall of the conical hole; the maximum diameter of the circular truncated cone structure is larger than the maximum inner diameter of the annular sealing gasket.
As a further aspect of the present invention: and the outer wall of the upper sleeve is provided with a boss structure.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses novel structure, detachable dabber and sleeve pipe setting make things convenient for the spring exhaust cover to need not whole abandon when partial part damages to change, can dismantle the part of damage change can, effectively practice thrift and utilize the resource; the utility model adopts the fixed block to effectively prevent the mandrel from skewing when reciprocating; the first notch that the sleeve pipe lower extreme was seted up is favorable to the dabber to pull out convenient operation when inserting, and can play the effect that auxiliary gas discharges better.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a perspective view of the center shaft and the spring according to the present invention;
FIG. 3 is a schematic view of a three-dimensional structure of a middle sleeve according to the present invention;
in the figure: the structure comprises a sleeve 1, an upper sleeve 11, a conical hole 111, a boss 112, an annular sealing gasket 113, a lower sleeve 12, a first notch 121, a core shaft 2, an upper core shaft 21, a first limiting block 211, a fixing block 212, a lower core shaft 22, a second limiting block 221, a second notch 222 and a spring 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
Referring to fig. 1-3, a split spring venting sleeve includes a sleeve 1 and a mandrel 2 coaxially and movably disposed in the sleeve 1, wherein a spring 3 is sleeved on the mandrel 2, and the sleeve 1 includes an upper sleeve 11 and a lower sleeve 12 detachably connected to each other; the mandrel 2 comprises an upper mandrel 21 and a lower mandrel 22 which are detachably connected; the upper end of the upper mandrel 21 is provided with a first limiting block 211, and the lower end of the lower mandrel 22 is provided with a second limiting block 221; the second stopper 221 is located outside the lower casing 12.
Further, as shown in fig. 1, the upper spindle 21 and the lower spindle 22 are in threaded connection; the upper sleeve 11 and the lower sleeve 12 are in threaded connection; wherein, the lower end surface of the upper mandrel 21 is upwards provided with a threaded hole; the upper end of the lower mandrel 22 is provided with an external thread matched with the threaded hole.
Further, as shown in fig. 2, the first limiting block 211 arranged at the upper end of the upper core shaft 21 is a circular truncated cone structure, and the diameter of the circular truncated cone structure is gradually reduced from top to bottom; in the vulcanization process, other parts in the tire are heated and expanded, the mandrel 2 is pushed upwards under the action of gas thrust and pulled back under the constraint of the spring 3, the mandrel 2 does a plurality of reciprocating motions, and the circular truncated cone structure limits the downward motion of the reciprocating mandrel 2. At least two fixing blocks 212 are arranged on the outer wall of the upper mandrel 21 below the first limiting block 211, and the end faces of the fixing blocks 212 abut against the inner wall of the sleeve 1; the fixed block 212 is 4 in this embodiment, and it is criss-cross distribute in the outer wall of upper core shaft 21, fixed block 212 and sleeve 1 inner wall cooperate, prevent that dabber 2 from taking place crooked condition when doing reciprocating motion.
Further, as shown in fig. 3, a conical hole 111 is formed in the inner wall of the upper end of the upper sleeve 11, an annular sealing gasket 113 matched with the circular truncated cone structure is arranged on the inner wall of the conical hole 111, the maximum inner diameter of the annular sealing gasket 113 is smaller than the maximum diameter of the circular truncated cone structure, and the circular truncated cone structure is attached to the annular sealing gasket under the action of gravity in a natural state. The outer wall of the upper sleeve 11 is provided with a boss structure 112, and the boss structure 112 helps to prevent the hand from sliding when the upper sleeve 11 is pulled out and inserted.
Further, with reference to fig. 2, the lower core shaft 22 is provided with a second notch 222 along the lower end surface thereof in the axial direction, and an opening end of the second notch 222 is located on the lower end surface of the lower core shaft 22; when the mandrel 2 is pulled out and inserted, the opening part of the second notch 222 is retracted inwards to approach, and the opening part of the second notch 222 is restored after the pulling and inserting operation is completed. The second notch 222 divides the second stopper 221 into two parts; the outer diameter of the second stopper 221 is larger than the inner diameter of the lower sleeve 12, so that the second stopper 221 stops the spindle 2 moving up.
Further, referring to fig. 3, the lower sleeve 12 is provided with a first notch 121 along the axial direction of the side wall thereof, and the open end of the first notch 121 is located at the lower end of the lower sleeve 12, the number of the first notches 121 is at least two and is uniformly distributed at the lower end of the lower sleeve 12, in this embodiment, the number of the first notches 121 is two, and the first notches 121 are symmetrically distributed on the side wall of the lower sleeve 12; when the mandrel 2 is pulled out and inserted, the second limiting block 221 struts the second notch 222 and then restores the second notch, in the pulling and inserting process, the first notch 121 on the mandrel 2 shrinks inwards, the second notch 222 is arranged to enable the pulling and inserting to be more labor-saving, and the arrangement of the second notch 222 can assist the exhaust process to enable exhaust to be smoother.
The accommodating space formed between the inner wall of the sleeve 1 and the outer wall of the mandrel 2 is used for placing the spring 3 and the fixing block 212 and is also used as an exhaust channel for exhausting expanded gas in the tire in the vulcanization process.
Further, one end of the spring 3 abuts against the lower end of the fixed block 212, and the other end abuts against the upper end of the first limit block 211, and the spring 3 provides a buffering effect and assists in limiting when the mandrel 2 reciprocates.
When the utility model is used, firstly, the bottom end of the whole sleeve 1 is aligned with the exhaust hole and inserted into the exhaust hole, and then the mandrel 2 sleeved with the spring 3 at the periphery is inserted into the sleeve 1, so that the second limiting block 221 is exposed out of the lower sleeve 12 to complete the installation; in a natural state, the circular truncated cone structure is attached to the annular sealing gasket under the action of gravity, when vulcanization is started, the mandrel 2 is limited to move up and down in the sleeve 1 in a reciprocating mode, the circular truncated cone structure limits the downward movement of the mandrel 2, and the second limiting block 221 limits the upward movement of the mandrel 2; the parts which are easy to damage are generally the lower mandrel 22, the lower sleeve 12 and the spring 3, the parts need to be replaced due to the reasons of splashing of rubber liquid, blockage caused by dust accumulation, loss of elasticity of the spring and the like, the sleeve 1 or the mandrel 2 is pulled out, and the damaged parts are screwed off for replacement and then are assembled again.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. A split type spring exhaust sleeve comprises a sleeve (1) and a mandrel (2) coaxially and movably arranged in the sleeve (1), wherein a spring (3) is sleeved on the periphery of the mandrel (2), and the split type spring exhaust sleeve is characterized in that the sleeve (1) comprises an upper sleeve (11) and a lower sleeve (12) which are detachably connected; the mandrel (2) comprises an upper mandrel (21) and a lower mandrel (22) which are detachably connected; a first limiting block (211) is arranged at the upper end of the upper mandrel (21), and a second limiting block (221) is arranged at the lower end of the lower mandrel (22); the second limiting block (221) is located outside the lower sleeve (12).
2. The split spring venting sleeve of claim 1, wherein the upper spindle (21) and the lower spindle (22) are threaded; the upper sleeve (11) and the lower sleeve (12) are in threaded connection.
3. The split type spring air vent sleeve is characterized in that a threaded hole is formed in the lower end face of the upper mandrel (21) in an upward mode; the upper end of the lower core shaft (22) is provided with an external thread matched with the threaded hole.
4. The split type spring air vent sleeve as claimed in claim 1, wherein the lower sleeve (12) is axially provided with first notches (121) along a sidewall thereof, an open end of each first notch (121) is located at a lower end of the lower sleeve (12), and the first notches (121) are uniformly distributed at the lower end of the lower sleeve (12) and are at least two in number.
5. The split spring venting sleeve of claim 1, wherein the lower spindle (22) is axially formed with a second notch (222) along a lower end surface thereof, and an open end of the second notch (222) is located on the lower end surface of the lower spindle (22).
6. The split type spring air-vent sleeve as claimed in claim 1, wherein at least two fixing blocks (212) are arranged on the outer wall of the upper mandrel (21) below the first limiting block (211), and the end faces of the fixing blocks (212) abut against the inner wall of the sleeve (1).
7. The split type spring exhaust cover according to claim 6, wherein one end of the spring (3) abuts against the lower end of the fixed block (212), and the other end abuts against the upper end of the first limiting block (211).
8. The split type spring air vent sleeve as claimed in claim 1, wherein the first stopper (211) is a circular truncated cone structure, and the diameter of the circular truncated cone structure is gradually reduced from top to bottom.
9. The split type spring air vent sleeve as claimed in claim 8, wherein the top of the upper sleeve (11) is a conical hole (111), and an annular sealing gasket (113) matched with the circular truncated cone structure is arranged on the inner wall of the conical hole (111); the maximum diameter of the circular truncated cone structure is larger than the maximum inner diameter of the annular sealing gasket (113).
10. The split spring venting sleeve of claim 1, wherein the outer wall of the upper sleeve (11) is provided with a boss structure (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021908060.0U CN213198437U (en) | 2020-09-03 | 2020-09-03 | Split type spring air exhaust sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021908060.0U CN213198437U (en) | 2020-09-03 | 2020-09-03 | Split type spring air exhaust sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213198437U true CN213198437U (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021908060.0U Active CN213198437U (en) | 2020-09-03 | 2020-09-03 | Split type spring air exhaust sleeve |
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| CN (1) | CN213198437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116604744A (en) * | 2023-07-20 | 2023-08-18 | 山东豪迈机械科技股份有限公司 | Exhaust and sand discharge device and tire mold with same |
-
2020
- 2020-09-03 CN CN202021908060.0U patent/CN213198437U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116604744A (en) * | 2023-07-20 | 2023-08-18 | 山东豪迈机械科技股份有限公司 | Exhaust and sand discharge device and tire mold with same |
| CN116604744B (en) * | 2023-07-20 | 2023-10-03 | 山东豪迈机械科技股份有限公司 | Exhaust and sand discharge device and tire mold with same |
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