Pore-free tire mold

Abstract

The utility model discloses a pore-free tire mold. The pore-free tire mold comprises a secondary mold and a primary mold, the sub-mold comprises a pattern block and insertion pieces, a plurality of insertion holes are formed in the inner wall of the pattern block, the insertion pieces are inserted into the insertion holes, and gaps are formed between the insertion pieces and the hole walls; and the female die is sleeved outside the sub-die. The pore-free tire mold has the beneficial effects that air is exhausted through the gaps between the insertion holes and the insertion pieces, so that the air exhausting effect is achieved, and the situation that rubber materials flow into the mold to form tire bristles can be avoided. And compared with the mode of directly forming the micropores, the structure is lower in cost and more convenient.

Description

Technical Field

[0001] This utility model relates to the field of tire molding technology, specifically to a tire mold without air holes. Background Technology

[0002] Vulcanized tires are made by applying pressure to a mold to vulcanize the outer tire. Hot water or steam is usually used, and a gradual heating and low-temperature long-term vulcanization method is adopted to allow the rubber compound to flow and transfer heat fully. The expansion pressure is used to fill the mold with the outer tire, causing the linear polymer inside the tire to undergo a cross-linking reaction, resulting in a high-elasticity rubber tire with good performance.

[0003] In the prior art, the tread blocks of the mold are provided with vent holes to discharge the gas inside the mold and ensure that the tire surface is heated evenly. However, the softened rubber material during the vulcanization process of the tire will flow into the vent holes, thereby forming fine columnar tire hairs on the surface. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a tire mold without air holes, which can prevent the formation of tire hairs on the tire surface.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a tire mold without air holes, comprising a sub-mold and a master mold;

[0006] The sub-mold includes a patterned block and inserts. The inner wall of the patterned block has multiple insertion holes, and the multiple inserts are inserted into the insertion holes with a gap between them and the hole wall.

[0007] The mother mold is fitted over the child mold.

[0008] The pattern blocks of the sub-mold are used to form the pattern on the surface of the tire, while the master mold is used to withstand the pressure during molding. The insert is inserted into the hole, and the gap formed between it and the hole wall allows for air venting. Because the gap is very small, the rubber material will not flow in.

[0009] The advantages of the aforementioned airless tire mold are: air is released through the gap between the insertion hole and the insert, which not only achieves the purpose of air release but also prevents rubber material from flowing in and forming tire hairs. Furthermore, this structure is lower in cost and more convenient than directly creating micropores.

[0010] Furthermore, the insertion hole is a strip-shaped hole, and the shape of the insert is adapted to the strip-shaped hole.

[0011] The strip-shaped holes can increase the length of the gap and improve the exhaust effect.

[0012] Furthermore, the material of the patterned block is aluminum alloy.

[0013] Aluminum alloys are lighter and have high material strength.

[0014] Furthermore, the material of the master mold is aluminum alloy.

[0015] Aluminum alloys are lighter and have high material strength.

[0016] Furthermore, the insert is made of stainless steel.

[0017] Stainless steel has advantages such as good heat resistance and high strength.

[0018] Furthermore, it also includes a clamp, through which the upper and lower ends of the master mold and the pattern block are connected;

[0019] The clamp has a groove on one side and a countersunk hole on the other side. The groove can hold the ends of the female mold and the patterned block. The female mold also has a threaded hole corresponding to the countersunk hole.

[0020] The master mold and the patterned block are connected by a clamp, forming a detachable structure. The clamp holds the ends, and locking bolts pass through countersunk holes and threaded holes to securely connect the master mold and the patterned block. Disassembling each component separately facilitates subsequent maintenance of the mold.

[0021] Furthermore, the clamp is made of steel.

[0022] Since the fixture needs to hold the mother mold and the daughter mold, it is made of steel, which has good tensile, compressive, bending and shear strength and can withstand stronger pressure and load.

[0023] Furthermore, steel pads are provided at both ends of the clamp.

[0024] When patterned blocks are assembled in a cold mold state, steel shims can contact each other, creating gaps between the patterned blocks. This prevents adjacent patterned blocks from colliding and better protects the parting surface of the patterned blocks.

[0025] Furthermore, the insert is fixedly disposed on the inner wall of the mother mold near the patterned block.

[0026] The insert is integrally molded on the mother mold, which facilitates processing. When installing the mother mold and the sub-mold, simply align the insert hole of the patterned block with the insert.

[0027] Furthermore, the insert is detachably inserted into the socket of the patterned block.

[0028] The inserts can also be processed separately, and the detachable design makes it easy to replace any malfunctioning inserts later. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0030] Figure 1 A schematic diagram of a poreless tire mold provided in an embodiment of the present invention;

[0031] Figure 2 for Figure 1 An exploded view of a tire mold without air holes;

[0032] Figure label:

[0033] 10 - Female mold, 11 - Threaded hole;

[0034] 20-Sub-mold, 21-Patterned block, 211-Insertion hole, 22-Insertion piece;

[0035] 30-Clamp, 31-Counterhead hole, 32-Shim. Detailed Implementation

[0036] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0037] Please see Figure 1 and Figure 2 This utility model provides a tire mold without air holes, including a mother mold 10 and a daughter mold 20. The daughter mold 20 includes tread blocks 21 and inserts 22. The inner wall of the tread blocks 21 has multiple circumferentially spaced and evenly spaced insertion holes 211. The inserts 22 are inserted into the insertion holes 211 and have gaps between them and the hole walls. Both the mother mold 10 and the daughter mold 20 are arc-shaped blocks and can be spliced ​​together circumferentially to form a ring. The mother mold is fitted over the outside of the daughter mold to form a complete tire mold.

[0038] In this mold, the tread blocks 21 of the sub-mold 20 are used to form the tread pattern and tire surface, while the master mold 10 is used to withstand the pressure during molding. The insert 22 is inserted into the insertion hole 211, and the gap formed between it and the hole wall allows for air venting. Because the gap is very small, the rubber material will not flow in and form tire hair. Moreover, this structure is lower in cost and more convenient than directly creating micropores.

[0039] Specifically, the socket 211 is a strip-shaped hole, and the shape of the insert is adapted to the strip-shaped hole. The strip-shaped hole can increase the length of the gap and improve the exhaust effect.

[0040] Specifically, the patterned blocks can be made of aluminum alloy or steel, the master mold can be made of aluminum alloy or steel, and the inserts can be made of steel or stainless steel. In this embodiment, the patterned blocks and master mold are made of aluminum alloy, and the inserts are made of stainless steel. Aluminum alloy has the advantages of being lighter and having higher material strength. Compared with traditional steel structure master molds, the weight is reduced by more than 40%, which not only saves on hoisting equipment but also improves the convenience and safety of operation. Stainless steel, on the other hand, has the advantages of good heat resistance and high strength.

[0041] Specifically, it also includes a clamp 30, through which the upper and lower ends of the female mold 10 and the patterned block 21 are connected. The clamp 30 is also an arc-shaped block, with an arc-shaped groove on one side and a countersunk hole 31 connecting the groove on the other side. The groove can clamp the ends of the female mold 10 and the patterned block 21. The female mold 10 is also provided with a threaded hole 11 corresponding to the countersunk hole 31.

[0042] The female mold 10 and the patterned block 21 are connected by a clamp 30, forming a detachable structure. The clamp 30 holds the ends, and the locking bolt passes through the countersunk hole 31 and is threaded into the threaded hole 11, which can fix the female mold 10 and clamp the patterned block 21. This detachable structure makes it easier to disassemble the various parts of the mold for maintenance and repair, making it more convenient and flexible.

[0043] In this embodiment, since the clamp 30 is to hold the female mold 10 and the female mold 20, the clamp 30 is made of steel, which has good tensile, compressive, bending and shear strength and can withstand stronger pressure and load.

[0044] Specifically, steel shims 32 are provided at both ends of the fixture 30. When adjacent patterned blocks 21 are spliced ​​in the cold mold state, the steel shims 32 contact each other, creating a gap between the patterned blocks, thereby preventing collisions between adjacent patterned blocks and better protecting the parting surface of the patterned blocks.

[0045] Specifically, during mold processing, the insert can be machined as a single unit with the mother mold. When installing the mother mold and the sub-mold, simply align the insertion holes of the patterned block with the insert of the mother mold, making installation easier. Alternatively, the insert can be machined separately and then detachably inserted into the patterned block. This method facilitates subsequent maintenance and replacement of faulty inserts.

[0046] Using the aforementioned poreless tire mold, air is released through the gap between the insertion hole and the insert, achieving both air release and preventing rubber from flowing in and forming tire hairs. Furthermore, this structure is lower in cost and more convenient than directly creating micropores. In addition, all parts of the mold are detachable, facilitating subsequent maintenance.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A non-porous tire mold, characterized in that: Includes sub-mold and parent mold; The sub-mold includes a patterned block and inserts. The inner wall of the patterned block has multiple insertion holes, and the multiple inserts are inserted into the insertion holes with a gap between them and the hole wall. The mother mold is fitted over the child mold.

2. The air-hole-free tire mold according to claim 1, characterized in that: The insertion hole is a strip-shaped hole, and the shape of the insert is adapted to the strip-shaped hole.

3. The air-hole-free tire mold according to claim 1, characterized in that: The patterned blocks are made of aluminum alloy.

4. The air-hole-free tire mold according to claim 1, characterized in that: The material of the master mold is aluminum alloy.

5. The air-hole-free tire mold according to claim 1, characterized in that: The insert is made of stainless steel.

6. The air-hole-free tire mold according to claim 1, characterized in that: It also includes a clamp, and the upper and lower ends of the master mold and the pattern block are connected by the clamp; The clamp has a groove on one side and a countersunk hole on the other side. The groove can hold the ends of the female mold and the patterned block. The female mold also has a threaded hole corresponding to the countersunk hole.

7. The air-hole-free tire mold according to claim 6, characterized in that: The clamp is made of steel.

8. The air-hole-free tire mold according to claim 6, characterized in that: Both ends of the clamp are equipped with steel pads.

9. The air-hole-free tire mold according to claim 6, characterized in that: The insert is fixedly installed on the inner wall of the mother mold near the patterned block.

10. The air-hole-free tire mold according to claim 6, characterized in that: The insert is detachably inserted into the socket of the patterned block.

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