Air hole sleeve of air-hole-free mold

Abstract

The invention belongs to the technical field of pore sleeves, and particularly relates to a pore-free mold pore sleeve which comprises a sleeve shell and a mold. A group of mounting through holes are formed in the mold; the group of sleeve shells are fixedly mounted at one ends of the mounting through holes; an annular air inlet groove is formed in the top end of the sleeve shell; a group of air dissipation through grooves are formed in the outer circular wall of the hole sleeve body and communicate with the annular air inlet groove, a circular truncated cone groove is formed in the bottom end of the sleeve shell, and the circle with the diameter of the smaller end of the circular truncated cone groove faces downwards; through the structural design of the annular air inlet grooves, the spiral grooves, the annular grooves, the triangular pyramid protruding blocks and the like, air flow is effectively guided, laminar flow is broken, air mixing and fluidity are enhanced, the exhaust speed and efficiency are remarkably improved, the quality problem caused by unsmooth exhaust during tire vulcanization is reduced, and rubber whiskers are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of pore sleeves, in particular to a pore-free mould pore sleeve. Background Art

[0002] The pore sleeve of tire mold production is a key component of the tire manufacturing mold. In the tire mold, there are two types of pore sleeves currently used: ordinary pore sleeves and spring pore sleeves. It is carefully made of high-quality materials and has a fine and unique internal channel structure. During the tire vulcanization process, it accurately controls the gas discharge path and rate, promotes the efficient discharge of gas in the rubber, and prevents residual bubbles from affecting the quality of the tire. Its special design effectively reduces the risk of rubber blockage and ensures that the pores remain unobstructed for a long time.

[0003] A Chinese patent with announcement number CN 115946275 A discloses a spoke-type rubber-free wool spring air hole sleeve, including a mold, a sleeve shell, an outer sleeve, a mounting ring, a quick-release mechanism, spokes, a positioning mechanism and a valve core. The outside of the sleeve shell is fixedly connected to the mounting ring, the mounting ring is provided with a plurality of evenly distributed air holes, the mounting ring is provided with a quick-release mechanism, the inner side of the sleeve shell is slidably connected to the spokes, and the positioning mechanism is provided inside the spokes.

[0004] The prior art has the following disadvantages: first, its structure is complex, the manufacturing process is complicated and the cost is high; the spring is easily fatigued and damaged after long-term operation and needs to be replaced periodically, thereby increasing the funds required for maintenance and the equipment downtime, which greatly reduces the production efficiency;

[0005] Second, although the air hole sleeve has an anti-blocking design, the rubber still seeps in and condenses, causing the air hole to be blocked. The friction between the spring, the mandrel and the sleeve shell causes wear. In addition, the installation and adaptation requirements are high. Too loose or too tight will have disadvantages, affecting the exhaust and tire quality.

[0006] The third is that the pore sleeve valve body contacts the rubber, and its embedding depth and position deviation from the shell will cause grooves and unevenness on the tire surface, especially affecting the appearance at the curved surface. For this reason, the present invention provides a pore-free mold pore sleeve. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art and solve the problems of complex structure, complicated manufacturing process and high cost, the spring is easily fatigued and damaged after long-term operation and needs to be replaced periodically, thereby increasing the funds required for maintenance and equipment downtime, resulting in a significant reduction in production efficiency; although the pore sleeve has an anti-blocking design, there is still rubber infiltration and condensation causing pore blockage, friction between the spring, core shaft and sleeve shell causes wear, and the installation and adaptation requirements are high, too loose or too tight has disadvantages, affecting exhaust and tire quality; the pore sleeve valve body contacts the rubber, and its embedding depth and position deviation from the shell will cause grooves and unevenness on the tire surface, especially affecting the appearance at the curved surface. For this reason, the present invention provides a pore-free mold pore sleeve.

[0008] The technical solution adopted by the present invention to solve its technical problems is: the pore sleeve of the pore-free mold described in the present invention includes a sleeve shell and a mold; a group of mounting through holes are opened on the mold, and a group of the sleeve shells are fixedly installed at one end of the mounting through holes; an annular air inlet groove is opened on the top of the sleeve shell; a group of air dispersion grooves are opened on the outer circular wall of the hole sleeve body, and a group of air dispersion grooves and the annular air inlet groove are connected, and a truncated cone groove is opened at the bottom end of the sleeve shell, and the circle with the smaller diameter of the truncated cone groove is arranged downward.

[0009] Preferably, a spiral groove is provided on the annular air inlet groove.

[0010] Preferably, a pair of annular grooves are formed on the annular air inlet groove, and the annular grooves are connected to the spiral grooves, and the annular grooves and the spiral grooves are spaced apart from top to bottom.

[0011] Preferably, the depth of the annular groove is 0.02mm-0.05mm; the thickness of the annular air inlet groove is 0.025mm.

[0012] Preferably, a group of protrusions are fixedly connected to the outer circular wall of the annular air inlet groove, and the group of protrusions are arranged in a spiral shape and correspond to the positions of the spiral groove. The group of protrusions is a triangular pyramid, and the tip of the triangular pyramid is arranged upward.

[0013] Preferably, a group of the bumps have a height of 0.01 mm to 0.05 mm, and a side length of a bottom surface of the bumps is 0.02 mm to 0.1 mm.

[0014] Preferably, the casing is made of high temperature resistant stainless steel.

[0015] Preferably, a group of the inner circular walls of the mounting through holes are all provided with trumpet grooves, and the ends of the trumpet grooves with larger openings are arranged toward the outside of the mold; the top ends of the trumpet grooves correspond to the middle sections of the air dispersion grooves.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The pore-free mold pore sleeve of the present invention effectively guides the gas flow, breaks the laminar flow, enhances gas mixing and fluidity, significantly improves the exhaust speed and efficiency, reduces the quality problems caused by poor exhaust during tire vulcanization, and avoids the generation of rubber whiskers through structural designs such as annular air inlet grooves, spiral grooves, annular grooves and triangular pyramidal bumps.

[0018] 2. The pore-free mold pore sleeve of the present invention has a specific thickness of the annular air inlet groove, a bump setting, and a groove design, which can effectively block rubber from entering the exhaust channel, reduce the risk of pores being blocked by rubber condensation, ensure the long-term stable operation of the pore sleeve, and reduce maintenance costs and downtime.

[0019] 3. The pore sleeve of the pore-free mold described in the present invention is made of high-temperature resistant stainless steel, can withstand the high temperature and high pressure of vulcanization, maintain a stable structure, and is not easy to deform or damage; and reasonable structural design such as the trumpet groove reduces the gas discharge resistance, so that the entire pore sleeve can operate reliably in harsh working environments, extend its service life, and improve production continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a partial structural stereogram of the present invention;

[0022] Figure 2 is a three-dimensional diagram of the sleeve of the present invention;

[0023] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 It is a front view and cross-sectional stereoscopic view of the mold in the present invention.

[0025] In the figure: 1, casing; 11, mould; 12, mounting through hole; 13, annular air inlet groove; 14, air dispersion groove; 15, truncated cone groove; 2, spiral groove; 3, annular groove; 4, bump; 5, horn groove. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0027] Embodiment 1

[0028] like Figure 1As shown, the pore-free mold pore sleeve of the embodiment of the present invention comprises a sleeve shell 1 and a mold 11; a group of mounting through holes 12 are provided on the mold 11, and a group of the sleeve shells 1 are fixedly installed at one end of the mounting through holes 12; an annular air inlet groove 13 is provided on the top of the sleeve shell 1; a group of air dispersion grooves 14 are provided on the outer circular wall of the hole sleeve body, and a group of air dispersion grooves 14 and the annular air inlet groove 13 are connected, and a truncated cone groove 15 is provided at the bottom end of the sleeve shell 1, and the circle with the smaller diameter of the truncated cone groove 15 is arranged downward; when working, by Installed in the evenly arranged installation through holes 12, when the tire is vulcanized, the gas enters from the annular air inlet groove 13 and is discharged through the air dispersion groove 14. The truncated cone groove 15 is conducive to guiding the gas flow. This design has a simple structure and avoids the reduction of its failure rate and accuracy due to the use of a spring. Compared with the ordinary air hole sleeve, in order to take into account the exhaust efficiency, the diameter of the circular exhaust hole cannot be set too small, which will cause rubber to enter the inside and produce rubber whiskers. The design of the annular air inlet groove 13 increases the exhaust efficiency and avoids the generation of rubber whiskers due to the rubber entering the exhaust groove.

[0029] Embodiment 2

[0030] like Figures 2 to 3 As shown, a spiral groove 2 is provided on the annular air inlet groove 13; during operation, when the gas flows in the annular air inlet groove 13, the spiral groove 2 causes the gas to generate a spiral flow, thereby enhancing the fluidity of the gas, promoting the mixing of gas molecules, breaking the laminar flow state, accelerating the exhaust speed, and reducing the retention of gas in the air inlet groove.

[0031] A pair of annular grooves 3 are provided on the annular air inlet groove 13, and the annular grooves 3 are connected to the spiral groove 2, and the annular grooves 3 and the spiral grooves 2 are spaced apart from each other from top to bottom; during operation, the gas can enter the annular grooves 3 when flowing in the spiral grooves 2, forming a complex flow path, further disrupting the gas flow and increasing the exhaust efficiency. At the same time, the annular grooves 3 can be used as a buffer area to reduce the possibility of the rubber directly impacting the air inlet groove wall.

[0032] The depth of the annular groove 3 is 0.02mm-0.05mm; the thickness of the annular air inlet groove 13 is 0.025mm; when working, the depth range of the annular groove 3 is involved, which can play a role without affecting the overall structural strength of the air inlet groove. The appropriate depth can effectively guide the gas flow, and will not cause rubber to accumulate easily due to being too deep, thereby ensuring long-term stable exhaust performance. The specific thickness design of the annular air inlet groove 13 can limit the entry of rubber to a certain extent, ensuring smooth exhaust, and the design of the truncated cone groove 15 optimizes the gas flow path and improves the exhaust efficiency.

[0033] Embodiment 3

[0034] like Figure 4As shown, a group of protrusions 4 are fixedly connected to the outer circular wall of the annular air inlet groove 13, and a group of protrusions 4 are arranged in a spiral shape and correspond to the position of the spiral groove 2. A group of protrusions 4 are triangular pyramids, and the tips of the triangular pyramids are arranged upward; when working, the gas is diverted and guided when flowing through the protrusions 4, and the triangular pyramid protrusions 4 can effectively guide the gas to form multiple swirls, accelerate exhaust, and reduce the risk of rubber entering the annular exhaust groove and clogging, thereby improving the durability of the air hole sleeve.

[0035] A group of the protrusions 4 has a height of 0.01mm-0.05mm, and a side length of the bottom surface of the protrusion 4 is 0.02mm-0.1mm. When working, the protrusions 4 of this size can be reasonably distributed in the air inlet groove and effectively interact with the gas. Without occupying too much air inlet groove space, they can give full play to the guiding of the gas and the blocking effect on the rubber, thereby ensuring good exhaust and anti-blocking effects.

[0036] The shell 1 is made of high-temperature resistant stainless steel; when working, in the high-temperature environment of tire vulcanization, the high-temperature resistant stainless steel maintains a stable structure and is not easily deformed or damaged, ensuring that the pore sleeve can operate reliably for a long time and adapt to harsh working conditions.

[0037] A group of the mounting through holes 12 are provided with a trumpet groove 5 on the inner circular wall, and the trumpet groove 5 with a larger opening is arranged toward the outside of the mold 11; the top of the trumpet groove 5 corresponds to the middle position of the air diffusion groove 14; during operation, the gas is discharged from the air diffusion groove 14 and then enters the trumpet groove 5, and the trumpet groove 5 can reduce the gas discharge resistance, so that the gas can be discharged to the outside of the mold 11 more smoothly, and the efficiency of the entire exhaust system is further improved.

[0038] Working principle: by installing multiple sets of housings 1 in evenly arranged mounting holes 12, when the tire is vulcanized, the gas enters from the annular air inlet groove 13 and is discharged through the air dispersion groove 14. The truncated cone groove 15 is conducive to guiding the flow of gas. This design has a simple structure and avoids the failure rate and accuracy reduced by the use of springs. Compared with ordinary air hole sleeves, the diameter of the circular exhaust hole cannot be set too small in order to take into account the exhaust efficiency, which will cause rubber to enter the inside and produce rubber whiskers. The design of the annular air inlet groove 13 increases the exhaust efficiency and avoids the rubber entering the exhaust groove. Rubber whiskers, when the gas flows in the annular air inlet groove 13, the spiral groove 2 causes the gas to produce a spiral flow, which enhances the fluidity of the gas, promotes the mixing of gas molecules, breaks the laminar flow state, speeds up the exhaust speed, and reduces the retention of gas in the air inlet groove. When the gas flows in the spiral groove 2, it can enter the annular groove 3 to form a complex flow path, further disrupting the gas flow and increasing the exhaust efficiency. At the same time, the annular groove 3 can be used as a buffer area to reduce the possibility of the rubber directly impacting the air inlet groove wall. The depth range of the annular groove 3 is involved, which can play a role without affecting the overall structural strength of the air inlet groove. The appropriate depth can effectively guide the gas flow, and will not cause rubber to accumulate easily due to excessive depth, thereby ensuring long-term stable exhaust performance. The specific thickness design of the annular air inlet groove 13 can limit the entry of rubber to a certain extent, ensuring smooth exhaust. The frustum groove 15 is designed to optimize the gas flow path and improve the exhaust efficiency. The gas is diverted and guided when it flows through the protrusion 4. The triangular pyramid protrusion 4 can effectively guide the gas to form multiple swirls, accelerate exhaust, and reduce the risk of rubber entering the annular exhaust groove and clogging, thereby improving the durability of the pore sleeve. The protrusion 4 of this size can be reasonably distributed in the air inlet groove and can communicate with the gas The air hole sleeve has an effective function, and fully plays the role of guiding the gas and blocking the rubber without occupying too much space in the air inlet groove, thereby ensuring good exhaust and anti-blocking effects. In the high-temperature environment of tire vulcanization, the high-temperature resistant stainless steel maintains a stable structure and is not easily deformed or damaged, thereby ensuring that the air hole sleeve can operate reliably for a long time and adapt to adverse working conditions. After the gas is discharged from the air dispersion groove 14, it enters the trumpet groove 5, and the trumpet groove 5 can reduce the gas discharge resistance, so that the gas can be discharged to the outside of the mold 11 more smoothly, thereby further improving the efficiency of the entire exhaust system.

[0039] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. Pore-free mold pore sleeve, characterized by: The invention comprises a sleeve (1) and a mold (11); the mold (11) is provided with a group of mounting through holes (12), and a group of the sleeves (1) are fixedly mounted at one end of the mounting through holes (12); the top of the sleeve (1) is provided with an annular air inlet groove (13); the outer circular wall of the hole sleeve body is provided with a group of air dispersion grooves (14), and the group of air dispersion grooves (14) and the annular air inlet groove (13) are all connected; the bottom of the sleeve (1) is provided with a truncated cone groove (15), and the circle with the smaller diameter of the truncated cone groove (15) is arranged downward.

2. The pore-free mold pore sleeve according to claim 1, characterized in that: The annular air inlet groove (13) is provided with a spiral groove (2).

3. The pore-free mold pore sleeve according to claim 2, characterized in that: A pair of annular grooves (3) are provided on the annular air inlet groove (13), and the annular grooves (3) are connected to the spiral groove (2), and the annular grooves (3) and the spiral groove (2) are spaced apart from each other from top to bottom.

4. The pore-free mold pore sleeve according to claim 3, characterized in that: The depth of the annular groove (3) is 0.02 mm-0.05 mm; the thickness of the annular air inlet groove (13) is 0.025 mm.

5. The pore-free mold pore sleeve according to claim 4, characterized in that: A group of protrusions (4) are fixedly connected to the outer circular wall of the annular air inlet groove (13), and the group of protrusions (4) are arranged in a spiral shape and correspond to the positions of the spiral groove (2). The group of protrusions (4) are triangular pyramids, and the tips of the triangular pyramids are arranged upward.

6. The pore-free mold pore sleeve according to claim 5, characterized in that: A group of the protrusions (4) has a height of 0.01 mm to 0.05 mm, and a bottom side length of the protrusions (4) is 0.02 mm to 0.1 mm.

7. The pore-free mold pore sleeve according to claim 6, characterized in that: The casing (1) is made of high temperature resistant stainless steel.

8. The pore-free mold pore sleeve according to claim 7, characterized in that: A group of the installation through holes (12) are provided with a trumpet groove (5) on their inner circular walls, and the trumpet groove (5) with a larger opening is arranged toward the outside of the mold (11); the top of the trumpet groove (5) corresponds to the middle section of the air dispersion groove (14).

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