Pore-free pattern block and tire mold
By designing a pore-free structure on the blocks of the tire vulcanization equipment, and using the exhaust plate and exhaust gap to achieve gas discharge, the glue hair problems caused by exhaust pores in the prior art and the low vulcanization efficiency are solved, and the tires are improved and the service life of the block.
Patent Information
- Application Number
- CN202421233833.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-01
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-06-01
AI Technical Summary
In existing tire vulcanization equipment, the exhaust holes on the blocks will cause the rubber to be discharged, forming rubber hair, affecting the aesthetics and yield of the tires. At the same time, the exhaust holes are prone to clogging, reducing the vulcanization efficiency.
Design a hole-free block, with several exhaust plates directly fixed inside the block body, and the exhaust gap is arranged on the exhaust plate. Only the exhaust holes that communicate with the exhaust gap are required on the back of the block can be processed to achieve gas. discharge.
It effectively avoids the rubber entering the exhaust passage, ensures that there is no rubber on the vulcanized tire surface, reduces the difficulty of processing, and improves the service life of the block and the yield of the tire.
Smart Images
Figure CN222431670U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tire vulcanization equipment, in particular to a tread block without air holes and a tire mold. Background Art
[0002] When the tire is vulcanized, the flexible mold needs to be closed to discharge the gas between the tread block and the tire blank and inside the tire blank. The long-standing solution is to set exhaust holes on the tread blocks, but the exhaust holes will discharge the rubber while discharging the gas, forming rubber hair in the crown area of the tire.
[0003] Setting exhaust holes in the tread blocks will mainly cause the following problems: 1. The vulcanized tires are not beautiful. Before the tires leave the factory, the rubber hair needs to be trimmed, which increases the labor cost of the tire factory; 2. The trimmed rubber hair can only be treated as waste, which wastes raw materials and is difficult to degrade naturally, causing environmental pollution; 3. The exhaust holes on the tread blocks are easy to clog. In order to ensure the normal vulcanization, it is necessary to stop production regularly to clear the exhaust holes, which reduces the vulcanization efficiency of the tire factory; 4. When the exhaust holes are blocked or the arrangement of the exhaust holes is unreasonable, the mold may also have problems with poor exhaust, which will cause defects such as lack of rubber and visible scars in the tire, resulting in the vulcanized tire becoming a defective or scrapped product, reducing the tire's yield rate.
[0004] In order to overcome the above problems, the prior art adopts a method of providing exhaust slits between adjacent tread blocks or on the tread blocks instead of exhaust holes. The exhaust slits on the tread blocks are usually formed by providing a valve core. Since adjacent tread blocks may move relative to each other, the valve core also needs to be detachably provided on the tread blocks, which makes it difficult to accurately maintain the width of the exhaust slits. Furthermore, the exhaust slits need to pass through the tread blocks during processing. Since the material of the existing tread blocks is usually aluminum, which has low strength, not only is the processing difficulty of the exhaust slits high, but the structural strength of the exhaust slits is also low and they are easily damaged, which not only affects the service life of the tread blocks, but also affects the vulcanization quality of the tire.
[0005] Therefore, it is an urgent problem to be solved at this stage to develop and design a non-porous tread block and tire mold that can prevent rubber from entering the exhaust channel, has no rubber hair on the surface of the tire after vulcanization, is easy to process and has a longer service life. Utility Model Content
[0006] In order to solve the problems existing in the prior art, the utility model provides a pore-free tread block and a tire mold, in which a plurality of exhaust plates are directly fixed inside the tread block body, and exhaust slits are arranged on the exhaust plates. Gas discharge can be achieved by processing exhaust holes connected to the exhaust slits on the back of the tread block, which greatly reduces the processing difficulty and can effectively prevent rubber from entering the exhaust channel, thereby ensuring that there is no rubber hair on the surface of the tire after vulcanization. The exhaust plates are made of a material with higher strength than the tread block body, and the structural strength at the exhaust slits is higher and not easy to be damaged, thereby increasing the service life of the tread block.
[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0008] In the first aspect, the utility model provides a pore-free pattern block, including a pattern block body, the pattern block body having a back side and a cavity surface that are arranged opposite to each other; a plurality of exhaust plates are arranged inside the pattern block body, and the exhaust plates are fixedly connected to the pattern block body; the exhaust plates have exhaust surfaces that are flush with the cavity surface, and exhaust gaps that pass through the exhaust plates are arranged on the exhaust surfaces; exhaust holes are arranged on the back side of the pattern block body, and the exhaust holes are connected to the exhaust gaps.
[0009] As a preferred technical solution, the strength of the material of the exhaust sheet is higher than the strength of the material of the pattern block body;
[0010] and / or, the shapes of the exhaust plates located at different positions on the cavity surface are set to be the same or different;
[0011] and / or, the shapes of the exhaust slits on the exhaust sheets at different positions on the cavity surface are set to be the same or different;
[0012] And / or, the widths of the exhaust slits on the exhaust plates at different positions on the cavity surface are set to be the same or different.
[0013] As a preferred technical solution, the through direction of the exhaust gap is perpendicular to the cavity surface;
[0014] And / or, the through direction of the exhaust slit extends from the cavity surface to the back surface;
[0015] And / or, the exhaust hole extends in a direction from the back surface to the cavity surface.
[0016] As a preferred technical solution, the cavity surface is provided with ribs, at least part of the exhaust plates are distributed on both sides of the ribs, and the minimum distance between the exhaust plates and the ribs is set to 0-10 mm.
[0017] As a preferred technical solution, the minimum distance between the exhaust sheet and the rib is set to 1-3 mm;
[0018] And / or, the exhaust slit extends in a direction parallel to the rib.
[0019] As a preferred technical solution, the width of the exhaust gap is set to 0.02-0.1 mm.
[0020] As a preferred technical solution, the exhaust sheet is made of steel;
[0021] And / or, the material of the tread block body is set to be aluminum alloy.
[0022] As a preferred technical solution, the exhaust slit on the exhaust sheet is formed by stamping;
[0023] Alternatively, the exhaust sheet is an integrally formed structure, and the exhaust slit is formed by cutting;
[0024] Alternatively, the exhaust sheet is formed by welding a plurality of sub-sheets to each other, and the plurality of sub-sheets are sequentially spliced together to enclose the exhaust gap.
[0025] As a preferred technical solution, the exhaust sheet is cast in the tread block body;
[0026] Alternatively, the exhaust sheet is embedded in the tread block body.
[0027] In a second aspect, the utility model provides a tire mold, comprising the aforementioned pore-free pattern block, wherein the cavity surfaces of a plurality of the pattern block bodies are sequentially spliced to form a vulcanization cavity.
[0028] The beneficial effects of the utility model are as follows:
[0029] 1. The utility model has several exhaust sheets directly fixed inside the tread block body, and the exhaust slits are directly arranged on the exhaust sheets. It is only necessary to process exhaust holes connected with the exhaust slits on the back of the tread block to realize gas discharge, which greatly reduces the processing difficulty and can effectively prevent the rubber from entering the exhaust channel, ensuring that there is no rubber hair on the surface of the tire after vulcanization. The exhaust sheets are made of a material with higher strength than the tread block body, and the exhaust slits can be processed in more ways. The structural strength of the exhaust slits is higher and it is not easy to be damaged, thereby improving the service life of the tread block.
[0030] 2. The exhaust piece of the utility model can be firmly fixed inside the tread block body by casting or inlaying, and the production and processing are simple; furthermore, the exhaust piece and the exhaust gap on the exhaust piece can be conveniently designed and arranged in position, shape and size according to the exhaust requirements and the shape of the rib on the cavity surface, thus avoiding mold rework and debugging due to unreasonable distribution or specifications of the exhaust gap.
[0031] 3. The exhaust piece of the utility model is only exposed at the cavity surface of the pattern block body and does not need to penetrate the pattern block body, thereby ensuring the exhaust effect and matrix strength, effectively preventing the risk of deformation during use, and will not affect the service life of the active mold. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 It is a side view of an embodiment of a tread block without pores of the utility model;
[0033] Figure 2 for Figure 1 A magnified image of area A;
[0034] Figure 3 for Figure 1 A top view of
[0035] Figure 4 for Figure 1 A schematic diagram of the structure of the exhaust piece;
[0036] Figure 5 The utility model is a distribution diagram of an exhaust sheet with a pattern block without air holes.
[0037] In the figure: 1-pattern block body, 11-back side, 12-cavity surface, 13-exhaust hole, 14-rib, 2-exhaust sheet, 21-exhaust surface, 22-exhaust gap, 23-sub-sheet. DETAILED DESCRIPTION
[0038] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.
[0039] First, please refer to Figure 1-Figure 5, is an embodiment of a non-porous pattern block provided by the utility model, comprising a pattern block body 1, the pattern block body 1 having a back side 11 and a cavity surface 12 arranged opposite to each other, the cavity surface 12 being used to form a vulcanization cavity of a mold; a plurality of exhaust sheets 2 are arranged inside the pattern block body 1, and the exhaust sheets 2 are fixedly connected to the pattern block body 1; the exhaust sheets 2 have an exhaust surface 21 flush with the cavity surface 12, and an exhaust gap 22 penetrating the exhaust sheet 2 is arranged at the exhaust surface 21; an exhaust hole 13 is arranged at the back side 11 of the pattern block body 1, and the exhaust hole 13 is connected to the exhaust gap 22 to form an exhaust channel for exhausting gas; the strength of the material of the exhaust sheet 2 is higher than the strength of the material of the pattern block body 1, which can effectively improve the structural strength at the exhaust gap 22 and improve the service life of the pattern block body 1.
[0040] Specifically, the material of the exhaust plate 2 is preferably set to steel, which is low-cost and easy to produce while ensuring the structural strength at the exhaust gap 22; the material of the pattern block body 1 is preferably set to aluminum alloy; the strength of the material in the utility model specifically refers to compressive strength, tensile strength, and shear strength.
[0041] It should be noted that the direction from the cavity surface 12 to the back surface 11 of the tread block body 1 is the radial direction of the tire mold, and the radial length of the exhaust piece 2 is preferably set to 1 / 5-1 / 2 of the radial thickness of the tread block body 1. On the one hand, the structural strength of the exhaust piece 2 itself and the exhaust gap 22 can be ensured, thereby improving the service life of the tread block body 1; on the other hand, the processing depth of the exhaust hole 13 can be effectively reduced, thereby facilitating the production and processing of the tread block body 1. The exhaust hole 13 does not need to penetrate the tread block body 1, thereby ensuring the strength of the tread block body 1 and reducing the risk of deformation of the tread block body 1.
[0042] Furthermore, in order to ensure the fixing effect of the exhaust piece 2 inside the pattern block body 1, during production, the exhaust piece 2 is preferably directly cast inside the pattern block body 1; in other embodiments, the exhaust piece 2 can also be fixed in the pattern block body 1 by inlaying, provided that the exhaust piece 2 can be firmly arranged inside the pattern block body 1.
[0043] For clarification, please refer to Figure 5 In order to facilitate production and ensure the exhaust effect, the exhaust sheets 2 located at different positions of the cavity surface 12 are preferably designed into different shapes according to the pattern shape and exhaust requirements of the area; in other embodiments, when the shapes of the exhaust sheets 2 at different positions are consistent and can meet the production and exhaust requirements, unifying the shapes of the exhaust sheets 2 can reduce production costs.
[0044] Similarly, please refer to Figure 5In order to ensure the exhaust effect, the exhaust gaps 22 on different exhaust sheets 2 should also be designed with different shapes and widths according to the exhaust requirements of their locations; in other embodiments, when the shapes and widths of the exhaust gaps 22 on different exhaust sheets 2 are consistent and can also meet the exhaust requirements, unifying the specifications of the exhaust gaps 22 on the exhaust sheets 2 can reduce production costs; specifically, the width of the exhaust gap 22 is preferably set to 0.02-0.1mm, and the specific width of the exhaust gap 22 can be designed according to different tire factories, different vulcanization environments, and different rubber formulas, which can ensure smooth exhaust of gas while preventing the rubber from entering the exhaust gap 22.
[0045] Preferably, please refer to Figure 1-Figure 3 In order to ensure smooth discharge of gas in the vulcanization cavity, the through direction of the exhaust gap 22 is preferably perpendicular to the cavity surface 12; at the same time, the through direction of the exhaust gap 22 extends from the cavity surface 12 to the back surface 11, and the exhaust hole 13 extends from the back surface 11 to the cavity surface 12. The exhaust channel formed by the exhaust gap 22 and the exhaust hole 13 extends radially, and the gas in the vulcanization cavity can pass through the pattern block body 1 and be discharged as quickly as possible.
[0046] In this embodiment, please refer to Figure 5 , a rib 14 is provided on the cavity surface 12, and at least part of the exhaust sheets 2 are distributed on both sides of the rib 14, and the minimum distance between the exhaust sheets 2 and the rib 14 is set to 0-10mm, so that the exhaust sheets 2 and the rib 14 will not interfere with each other, and avoid the formation of a closed cavity near the rib 14 where gas cannot be discharged; more preferably, the minimum distance between the exhaust sheets 2 and the rib 14 is set to 1-3mm; specifically, the exhaust gap 22 preferably extends in a direction parallel to the rib 14, and the exhaust gap 22 can ensure that the gas gathered near the rib 14 is discharged smoothly; in other embodiments, the exhaust gap 22 can also extend in a direction close to or away from the rib 14, so as to effectively discharge the gas near the rib 14.
[0047] In this embodiment, please refer to Figure 4 The exhaust sheet 2 is formed by welding a plurality of sub-sheets 23 together, and the plurality of sub-sheets 23 are sequentially spliced and enclosed to form an exhaust gap 22; in other embodiments, the exhaust sheet 2 may also be an integrally formed structure, and the exhaust gap 22 on the exhaust sheet 2 may be formed by stamping or cutting using a water laser, an ultraviolet laser, an electron beam or an ion beam, so as to form an exhaust gap 22 with precise width and shape.
[0048] Secondly, the utility model provides a tire mold, including several of the aforementioned pore-free pattern blocks, and the cavity surfaces 12 of several pattern block bodies 1 are spliced in sequence to form a vulcanization cavity. During the mold closing process of the tire mold, the gas inside the vulcanization cavity can be smoothly discharged along the exhaust gaps 22 and the exhaust holes 13 on the pattern block body 1, and the vulcanized tire will not have defects such as lack of glue and visible scars; and the rubber will not enter the exhaust gaps 22, and the problem of exhaust channel blockage will not occur, thereby improving the vulcanization efficiency of the tire.
[0049] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A pore-free pattern block, characterized in that: The invention comprises a tread block body (1), wherein the tread block body (1) has a back surface (11) and a cavity surface (12) arranged opposite to each other; a plurality of exhaust plates (2) are arranged inside the tread block body (1), and the exhaust plates (2) are fixedly connected to the tread block body (1); the exhaust plates (2) have exhaust surfaces (21) flush with the cavity surface (12), and exhaust slits (22) penetrating the exhaust plates (2) are arranged at the exhaust surfaces (21); exhaust holes (13) are arranged at the back surface (11) of the tread block body (1), and the exhaust holes (13) are connected to the exhaust slits (22).
2. The pore-free pattern block according to claim 1, characterized in that: The strength of the material of the exhaust sheet (2) is higher than the strength of the material of the pattern block body (1); and / or, the shapes of the exhaust plates (2) located at different positions on the cavity surface (12) are set to be the same or different; and / or, the shapes of the exhaust slits (22) on the exhaust plates (2) located at different positions on the cavity surface (12) are set to be the same or different; And / or, the widths of the exhaust slits (22) on the exhaust plates (2) located at different positions on the cavity surface (12) are set to be the same or different.
3. The pore-free pattern block according to claim 1, characterized in that: The through direction of the exhaust slit (22) is perpendicular to the cavity surface (12); And / or, the through direction of the exhaust gap (22) extends along the direction from the cavity surface (12) to the back surface (11); And / or, the exhaust hole (13) extends in a direction from the back surface (11) to the cavity surface (12).
4. The pore-free pattern block according to claim 1, characterized in that: A rib (14) is provided on the cavity surface (12), at least part of the exhaust sheet (2) is distributed on both sides of the rib (14), and the minimum distance between the exhaust sheet (2) and the rib (14) is set to 0-10 mm.
5. The pore-free pattern block according to claim 4, characterized in that: The minimum distance between the exhaust sheet (2) and the rib (14) is set to 1-3 mm; And / or, the exhaust slit (22) extends in a direction parallel to the rib (14).
6. The pore-free pattern block according to claim 1, characterized in that: The width of the exhaust gap (22) is set to 0.02-0.1 mm.
7. The pore-free pattern block according to claim 1, characterized in that: The exhaust sheet (2) is made of steel; And / or, the material of the tread block body (1) is set to be aluminum alloy.
8. The pore-free pattern block according to claim 1, characterized in that: The exhaust slit (22) on the exhaust sheet (2) is formed by stamping; Alternatively, the exhaust sheet (2) is provided as an integrally formed structure, and the exhaust slit (22) is formed by cutting; Alternatively, the exhaust sheet (2) is formed by welding a plurality of sub-sheets (23) to each other, and the plurality of sub-sheets (23) are sequentially spliced together to enclose the exhaust gap (22).
9. A pore-free pattern block according to claim 1 or 8, characterized in that: The exhaust sheet (2) is cast in the tread block body (1); Alternatively, the exhaust sheet (2) is embedded in the pattern block body (1).
10. A tire mold, characterized in that: It comprises a plurality of pore-free pattern blocks as claimed in any one of claims 1 to 9, wherein the cavity surfaces (12) of the plurality of pattern block bodies (1) are sequentially spliced to form a vulcanized cavity.