Exhaust sheet, pattern block and tire mold

Abstract

The utility model discloses an exhaust sheet, a pattern block and a tire mold, and belongs to the technical field of tire molds, the exhaust sheet comprises an exhaust part and a gas collection part which are connected into a whole, and the gas collection part is located on the downstream side of the exhaust part according to the exhaust direction; the exhaust part is provided with a plurality of exhaust grooves; exhaust holes are formed in the pattern blocks, and the tire mold comprises the pattern blocks. The exhaust sheet is mounted in the mounting groove of the pattern block, and an air gap is defined by the groove wall of the exhaust groove and the groove wall of the mounting groove; a gas collection channel is defined by the gas collection part and the groove wall of the mounting groove, and the gas collection channel is communicated with the air gap to jointly form the exhaust channel; the gas collection channel is communicated with the exhaust hole; the exhaust sheets are arranged, so that exhaust holes or grooves can be prevented from being formed in the cavity surfaces of the pattern blocks, and air exhausting without air holes or air lines at the crown part is realized; the problem that the exhaust holes are blocked is solved, and the tire vulcanization efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire molds, and particularly relates to an exhaust piece, a tread block and a tire mold. Background Art

[0002] During the vulcanization of a tire, when the split mold is closed, it is necessary to discharge the gas between the tread block and the green tire, as well as the gas inside the green tire. For a long time, the method has been to set exhaust holes in the tread block part. However, while discharging the gas, the exhaust holes will also discharge the rubber compound from the holes, forming a lot of rubber hairs on the tire crown part.

[0003] The existing tread blocks provided with exhaust holes also have the following problems:

[0004] 1. The vulcanized tire is not beautiful. If these rubber hairs need to be trimmed before the tire leaves the factory, it will increase the labor cost of the tire factory;

[0005] 2. The trimmed rubber hairs can only be treated as waste, wasting raw materials. It is difficult for the rubber hairs to degrade naturally, polluting the environment;

[0006] 3. If the air holes are blocked or the arrangement of the air holes is unreasonable, defects such as tire lack of rubber and obvious scars may also occur due to poor exhaust of the mold, resulting in the vulcanized tire becoming a defective product or being scrapped, reducing the yield rate of the tire. Summary of the Utility Model

[0007] Regarding the problems existing in the prior art, the utility model provides an exhaust piece, a tread block and a tire mold, which form an exhaust channel by the cooperation of the exhaust piece and the installation groove of the tread block, avoid setting exhaust holes on the cavity surface of the tread block, improve the vulcanization efficiency and quality of the tire, and save energy and reduce emissions.

[0008] In order to achieve the above object, the technical scheme adopted by the utility model is as follows:

[0009] On the one hand, the utility model provides an exhaust piece for being installed on a tread block to form an exhaust channel; it includes an exhaust part and a gas collecting part connected as a whole. According to the exhaust direction, the gas collecting part is located on the downstream side of the exhaust part;

[0010] The exhaust part is provided with a plurality of exhaust grooves;

[0011] The exhaust piece is installed in the installation groove of the tread block, and the groove wall of the exhaust groove and the groove wall of the installation groove enclose an air gap; the gas collecting part and the groove wall of the installation groove enclose a gas collecting channel, and the gas collecting channel communicates with the air gap to jointly form the exhaust channel.

[0012] In the above exhaust piece, the exhaust part and the gas collecting part are plate-shaped;

[0013] And / or, the exhaust groove is provided on the front side of the exhaust part;

[0014] And / or, the exhaust groove is provided on the rear side of the exhaust part;

[0015] And / or, the cross-section of the exhaust groove is trapezoidal, rectangular or sector-shaped.

[0016] In the above-mentioned exhaust fin, a fitting part is further included for fixing the exhaust part and the air collecting part in the installation groove.

[0017] In the above-mentioned exhaust fin, the fitting part is strip-shaped and extends along the exhaust direction of the exhaust groove;

[0018] And / or, the number of the fitting parts is two, and the two fitting parts are respectively located at the left and right side edges of the exhaust part and the air collecting part;

[0019] And / or, the exhaust part, the air collecting part and the fitting part are of an integral structure.

[0020] In the above-mentioned exhaust fin, the thickness of the air collecting part is less than the thickness of the fitting part; the front side and / or the rear side of the air collecting part is concave with respect to the fitting part.

[0021] In the above-mentioned exhaust fin, the thickness of the exhaust part is less than the thickness of the fitting part; the front side and / or the rear side of the exhaust part is concave with respect to the fitting part.

[0022] In the above-mentioned exhaust fin, the thickness of the air collecting part is less than the thickness of the exhaust part; the front side or the rear side of the air collecting part is concave with respect to the exhaust part.

[0023] On the one hand, the present invention further provides a tread block, including the above-mentioned exhaust fin;

[0024] A plurality of installation grooves are provided on the cavity surface of the tread block, and the exhaust fin is installed in the installation groove; the groove wall of the exhaust groove and the groove wall of the installation groove enclose an air gap, and the air collecting part and the groove wall of the installation groove enclose an air collecting channel, and the air collecting channel and the air gap constitute the exhaust channel;

[0025] An exhaust hole is provided in the tread block, and the air collecting channel is communicated with the exhaust hole.

[0026] In the above-mentioned tread block, the end surface of the exhaust part is flush with the cavity surface;

[0027] And / or, a forming part is provided on the end surface of the exhaust part, and the forming part protrudes from the cavity surface;

[0028] And / or, the width of the air gap is 0.03 - 0.1 mm;

[0029] And / or, the exhaust piece is made of steel;

[0030] And / or, several riblets are provided on the cavity surface, and the exhaust piece is arranged close to the riblets;

[0031] And / or, the exhaust hole is located on the assembly connection surface of the pattern block, extends from the assembly connection surface into the interior of the pattern block, and communicates with the installation groove.

[0032] On the other hand, the present invention provides a tire mold, including the above-mentioned pattern block.

[0033] The beneficial effects of the present invention are as follows:

[0034] The exhaust part and the gas collecting part of the exhaust piece cooperate with the installation groove of the pattern block to form an air gap and a gas collecting channel; the size of the air gap only allows gas to pass through while the rubber compound cannot pass through; the gas flowing into the air gap is collected in the gas collecting channel and then discharged from the pattern block through the exhaust hole located on the assembly connection surface; it is possible to avoid setting exhaust holes or grooves on the cavity surface of the pattern block, and realize the exhaust of the crown part of the tire without air holes and air lines;

[0035] For the pattern block, since the effective ventilation cross-section of the gas collecting channel is much larger than the ventilation cross-sections of the air gap and the exhaust hole, even if the rubber compound enters with the air flow, it will deposit at the gas collecting channel due to the reduction of the air flow velocity, so there will be no problem of exhaust hole blockage, and the vulcanization efficiency of the tire is improved;

[0036] The tire crown part vulcanized by using the tire mold of the present application has no rubber hairs, and there is no need to remove the rubber hairs separately, reducing the production cost of the tire;

[0037] The exhaust piece does not penetrate through the pattern block, ensuring the use effect and the matrix strength, preventing risks such as deformation during use, and not affecting the service life of the mold;

[0038] The application of the exhaust piece is flexible. It can not only be designed into different shapes and sizes according to the exhaust requirements and the shape and arrangement position of the riblets, with flexible design; but also be integrated with the existing embedding structure on the pattern block, greatly expanding the layout of the cavity surface of the pattern block and being beneficial to optimizing the structure of the pattern block. Description of the Drawings

[0039] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the exhaust piece of the present invention;

[0040] Figure 2 It is a schematic diagram of the overall structure of the second embodiment of the exhaust piece of the present invention;

[0041] Figure 3 Schematic diagram of the overall structure of the third embodiment of the exhaust fin of the present utility model;

[0042] Figure 4 Schematic diagram of the overall structure of the fourth embodiment of the exhaust fin of the present utility model;

[0043] Figure 5 Schematic diagram of the overall structure of an embodiment of the tire mold of the present utility model;

[0044] Figure 6 is Figure 5 top view of;

[0045] Figure 7 Schematic diagram of the unfolded structure of the cavity surface of the pattern block of the present utility model;

[0046] Figure 8 Schematic diagram of the assembled structure of the exhaust fin and the pattern block of the present utility model;

[0047] Figure 9 Schematic diagram of the first structure of the air gap formed after the exhaust fin and the pattern block of the present utility model are assembled;

[0048] Figure 10 Schematic diagram of the second structure of the air gap formed after the exhaust fin and the pattern block of the present utility model are assembled.

[0049] In the figure:

[0050] 1 - Exhaust fin; 11 - Exhaust part; 12 - Gas collection part; 13 - Exhaust groove; 14 - Gas collection groove; 15 - Fitting part; 16 - Forming part;

[0051] 2 - Air gap; 3 - Gas collection channel;

[0052] 4 - Pattern block; 41 - Installation groove; 42 - Exhaust hole; 43 - Cavity surface; 44 - Assembly connection surface; 45 - Pattern rib;

[0053] 5 - Outer shell. Detailed implementation manners

[0054] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.

[0055] As Figures 1-4 shown, the exhaust fin 1 includes an exhaust part 11 and a gas collection part 12. According to the exhaust direction of the exhaust fin 1, the gas collection part 12 is located on the downstream side of the exhaust part 11. The exhaust part 11 is provided with a plurality of exhaust grooves 13. Please refer to Figure 8, when the exhaust fin 1 is installed into the installation groove 41 of the tread block 4, an air gap 2 is formed by the groove wall of the exhaust groove 13 and a partial groove wall of the installation groove 41; a gas collecting channel 3 is formed by the gas collecting part 12 and a partial groove wall of the installation groove 41. The gas collecting channel 3 is communicated with the air gap 2 to jointly form an exhaust channel; the gas flowing through the air gap 2 to the gas collecting channel 3 is collected and discharged in the gas collecting channel 3.

[0056] Compared with directly machining the air gap 2 on the tread block 4, the exhaust fin 3 can simplify the machining processes of the exhaust fin 3 and the tread block 4. Meanwhile, it is also convenient to control the size of the air gap 2, making it possible to form a micro air gap 2 on the cavity surface 43 of the tread block 4.

[0057] In the following, for clearly explaining the structure of the exhaust fin 1, please refer to Figure 1 , it is now set that the front-back direction of the exhaust fin 1 is the direction marked by the X-axis; the left-right direction is the direction marked by the Y-axis, and the up-down direction is the direction marked by the Z-axis; the dimension of the exhaust fin 1 in the front-back direction is set as the thickness.

[0058] The exhaust fin 1 can be designed into any required shape according to the needs of the actual use position, such as Figure 1 the plate shape shown, or other irregular shapes; the exhaust fin 1 cooperates with the installation groove 41 to form several groups of exhaust channels. Preferably, the exhaust fin 1 is in the shape of a plate, such as a flat plate or an arc-shaped plate; exhaust grooves 13 are provided on both the front side and the rear side of the exhaust part 11. After the exhaust fin 1 and the installation groove 41 are assembled, air gaps 2 are formed on both the front and rear sides of the exhaust part 11; correspondingly, gas collecting channels 3 are respectively formed by the front side and the rear side of the gas collecting part 12 and the side wall of the installation groove 41; the air gaps 2 and the gas collecting channels 3 on the same side of the exhaust fin 1 are communicated, so two groups of exhaust channels can be formed.

[0059] Preferably, the thickness of the gas collecting part 12 is less than that of the exhaust part 11; that is, in the front-back direction, it can be selected that the front side and / or the rear side of the gas collecting part 12 is concave with respect to the exhaust part 11 to form one or two gas collecting grooves 14 on the gas collecting part 12. The setting that the thickness of the gas collecting part 12 is less than that of the exhaust part 11 makes it easier to machine the exhaust grooves 13 on the exhaust part 11 and make the exhaust grooves 13 communicate with the gas collecting grooves 14.

[0060] Furthermore, the exhaust fin 1 is further provided with a fitting part 15 for installing and fixing the exhaust fin 1. The fitting part 15 is connected to at least one of the exhaust part 11 and the gas collecting part 12. Preferably, the fitting part 15 is connected to both the exhaust part 11 and the gas collecting part 12 at the same time. The fitting part 15 can be arranged at any position of the exhaust part 11 and the gas collecting part 12 as long as it does not affect the formation of the air gap 2 and the gas collecting channel 3.

[0061] Preferably, the mating part 15 is strip-shaped and extends up and down along the exhaust direction of the exhaust fin 1. The number of mating parts 15 is two, and the two mating parts 15 are respectively located at the left and right side edges of the exhaust part 11 and the air collecting part 12, that is, in the state as Figures 1-3 shown.

[0062] The exhaust part 11, the air collecting part 12 and the mating part 15 can be of an integral structure, that is, on the same plate blank, the exhaust part 11, the air collecting part 12 and the mating part 15 are processed by machining methods such as milling. Of course, the exhaust part 11, the air collecting part 12 and the mating part 15 can also be designed in a split form and assembled into one body by welding or other methods after separate processing. Compared with the split form, the integral structure is more convenient for processing and ensuring the machining accuracy of the exhaust fin 1, and is convenient for subsequent assembly and accuracy control.

[0063] The thickness of the air collecting part 12 is less than the thickness of the mating part 15. When the exhaust fin 1 forms an exhaust channel only on its front side or rear side, for example, an exhaust channel is formed on the front side of the exhaust fin 1, the rear side surface of the air collecting part 12 is flush with the rear side surface of the mating part 15, and the front side surface of the air collecting part 12 is concave with respect to the mating part 15 to form an air collecting groove 14; or when the exhaust fin 1 is provided with exhaust channels on both its front and rear sides, in the front-rear direction, the middle parts of the air collecting part 12 and the mating part 15 are connected, so that the front side surface and the rear side surface of the air collecting part 12 are both concave with respect to the mating part 15 to form two air collecting grooves 14. According to the different settings of the thickness of the air collecting part 12 and the mating part 15, the air collecting part 12 can be selected as a flat plate structure, and there is no need to separately process the air collecting grooves 14 on its front side and rear side door, and it can also ensure that there is a gap between the air collecting part 12 and the groove wall of the installation groove 41 to form an air collecting channel 3; the processing technology of the exhaust fin 1 is simplified, which is convenient for production and manufacturing.

[0064] Similarly, the thickness of the exhaust part 11 can also be set to be less than the thickness of the mating part 15 to provide conditions for simplifying the processing of the exhaust groove 13.

[0065] Please refer to Figure 1 , for the first embodiment of the exhaust fin 1 provided by the present invention, the front side surface and the rear side surface of the exhaust part 11 are respectively flush with the front side surface and the rear side surface of the mating part 15; a plurality of exhaust grooves 13 are provided on both the front side surface and the rear side surface of the exhaust part 11, and the cross section of the exhaust groove 13 is trapezoidal.

[0066] The front side surface and the rear side surface of the air collecting part 12 are both concave with respect to the exhaust part 11, so air collecting grooves 14 are formed on both sides of the air collecting part 12.

[0067] The number of mating parts 15 is two, which are respectively connected to the left and right edges of the exhaust part 11 and the air collecting part 12.

[0068] Please refer to Figure 2, which is the second embodiment of the exhaust fin 1 provided by the present utility model. Different from the first embodiment, the exhaust groove 13 is strip-shaped, that is, only one exhaust groove 13 is provided in the exhaust part 11; the cross-section of the exhaust groove 13 is rectangular.

[0069] Please refer to Figure 3 , which is the third embodiment of the exhaust fin 1 provided by the present utility model. Different from the first embodiment, the cross-section of the exhaust groove 13 is semi-circular or fan-shaped.

[0070] Please refer to Figure 4 , which is the fourth embodiment of the exhaust fin 1 provided by the present utility model. Different from the third embodiment, the exhaust fin 1 in the third embodiment is a flat plate, and the exhaust fin 1 in this embodiment is an arc-shaped plate.

[0071] The above-mentioned exhaust fin 1 can be applied to the tread block 4. Cooperating with the tread block 4, an exhaust channel can be formed without machining air holes on the cavity surface 43 of the tread block 4, and the exhaust is smooth during the tire vulcanization process. Specifically, as Figures 5-8 shown, a plurality of installation grooves 41 are provided on the cavity surface 43 of the tread block 4, and the exhaust fin 1 is installed in the installation grooves 41. The mating part 15 is connected to the installation groove 41, and preferably, the two are in interference fit; further, glue can be applied at the connection between the mating part 15 and the installation groove 41 to enhance the connection strength.

[0072] As Figure 8 shown, the groove wall of the exhaust groove 13 of the exhaust part 11 and the partial groove wall of the installation groove 41 jointly enclose an air gap 2; for the exhaust grooves 13 distributed in a dot pattern, the air gap 2 presents as a plurality of dot-shaped distributed air holes, as Figure 9 shown; for the strip-shaped exhaust grooves 13, the air gap 2 is also strip-shaped, as Figure 10 shown. The size of the micro-exhaust grooves 13 of the exhaust fin 1 can be designed according to different tire factories, different vulcanization environments, and different rubber compound formulas to ensure the exhaust effect while avoiding the overflow of the rubber compound. No matter what structure the air gap 2 presents, the width of the air gap 2 is preferably 0.03 - 0.1 mm, which can avoid the glue liquid from entering the air gap 2 while meeting the exhaust requirements. The collecting groove 14 of the collecting part 12 and the partial inner wall of the installation groove 41 jointly enclose a collecting channel 3, which is communicated with the air gap 2.

[0073] An exhaust hole 42 is also provided in the tread block 4, and the exhaust hole 42 is communicated with the collecting channel 3. For the two collecting channels 3 of the same exhaust fin 1, it can be designed that the two are respectively communicated with the exhaust hole 42; or the two collecting channels 3 can be communicated, and then one of the collecting channels 3 is communicated with the exhaust hole 42; or, other gas channels can be provided in the tread block 4 to realize the communication between the collecting channel 3 and the exhaust hole 42, as long as the gas in the collecting channel 3 can be discharged.

[0074] After applying the exhaust piece 1, there is no need to open air holes, air lines, etc. on the cavity surface 43 of the tread block 4. After vulcanization, the surface of the tire has no rubber hairs and scars, and the appearance of the tire is cleaner and more beautiful.

[0075] Furthermore, several ribs 45 are provided on the cavity surface 43 of the tread block 4. Some of the ribs 45 extend circumferentially and some extend radially according to design requirements. A plurality of exhaust pieces 1 are arranged on both sides of the ribs 45 to ensure smooth exhaust at the circumferential ribs 43. For the exhaust pieces 1 at different positions on the cavity surface 43, their lengths, shapes and positions can be set as required, and it is not necessary to limit them to be exactly the same, as long as there is no closed cavity between the tread block 4 and the tire blank and the exhaust rate meets the requirements.

[0076] The side surface of the tread block 4 opposite to the cavity surface 43 is an assembly connection surface 44. The exhaust hole 42 is located on the assembly connection surface 44 and extends from the assembly connection surface 44 into the interior of the tread block 4 and communicates with the installation groove 41. The position where the exhaust hole 42 communicates with the installation groove 41 can be set as required.

[0077] The exhaust piece 1 can be integrated with the inlay on the cavity surface 43. For example, a forming part 16 is provided on the end surface of the exhaust piece 1 adjacent to the exhaust part 11. The forming part 16 protrudes outward from the cavity surface 4, and the function of the forming part 16 is set according to needs. For example, several forming parts 16 can form several ribs 45 on the cavity surface 4. Without affecting the layout of the exhaust groove 13 and the gas collecting groove 14 and the communication between the gas collecting groove 14 and the exhaust hole 42, the structure of the forming part 16 can be designed as required. This integration scheme can reduce the space limitation of the design and layout of the cavity surface 43, which is beneficial to optimizing the overall structure of the tread block 4 and provides conditions for optimizing the tread block 4.

[0078] The material of the exhaust piece 1 can be selected according to the material of the tread block 4 and the application environment, such as steel.

[0079] The tire mold includes the above-mentioned tread block 4 and the outer shell 5. The tread block 4 is installed in the outer shell 5; the outer shell 5 has a cavity matching the shape of the assembly connection surface 44, and the tread block 4 is detachably arranged in the cavity.

[0080] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An exhaust fin (1) for being mounted on a tread block (4) to form an exhaust passage; characterized in that, It includes an exhaust part (11) and a gas collecting part (12) connected as a whole. According to the exhaust direction, the gas collecting part (12) is located on the downstream side of the exhaust part (11); The exhaust part (11) is provided with a plurality of exhaust grooves (13); The exhaust fin (1) is installed in the installation groove (41) of the tread block (4). The groove wall of the exhaust groove (13) and the groove wall of the installation groove (41) enclose an air gap (2); the gas collecting part (12) and the groove wall of the installation groove (41) enclose a gas collecting channel (3), and the gas collecting channel (3) communicates with the air gap (2) to jointly form the exhaust channel.

2. An exhaust fin (1) according to claim 1, characterized in that, The exhaust part (11) and the gas collecting part (12) are plate-shaped; and / or, the exhaust grooves (13) are provided on the front side surface of the exhaust part (11); and / or, the exhaust grooves (13) are provided on the rear side surface of the exhaust part (11); and / or, the cross-section of the exhaust groove (13) is trapezoidal or rectangular or fan-shaped.

3. An exhaust fin (1) according to claim 1, characterized in that, It further includes a fitting part (15) for fixing the exhaust part (11) and the gas collecting part (12) in the installation groove (41).

4. An exhaust fin (1) according to claim 3, characterized in that, The fitting part (15) is strip-shaped and extends along the exhaust direction of the exhaust groove (13); and / or, the number of the fitting parts (15) is two, and the two fitting parts (15) are respectively located at the left and right side edges of the exhaust part (11) and the gas collecting part (12); and / or, the exhaust part (11), the gas collecting part (12) and the fitting part (15) are of an integral structure.

5. An exhaust fin (1) according to claim 3, characterized in that, The thickness of the gas collecting part (12) is less than the thickness of the fitting part (15); the front side surface and / or the rear side surface of the gas collecting part (12) is concave with respect to the fitting part (15).

6. The exhaust fin (1) according to claim 3, characterized in that, The thickness of the exhaust part (11) is less than the thickness of the fitting part (15); the front side surface and / or the rear side surface of the exhaust part (11) is concave with respect to the fitting part (15).

7. An exhaust fin (1) according to claim 1, characterized in that, The thickness of the gas collecting part (12) is less than the thickness of the exhaust part (11); the front side surface or the rear side surface of the gas collecting part (12) is concave with respect to the exhaust part (11).

8. A tread block (4), characterized in that, It includes an exhaust fin (1) according to any one of claims 1-7; A plurality of installation grooves (41) are provided on the cavity surface (43) of the tread block (4), and the exhaust fin (1) is installed in the installation groove (41); the groove wall of the exhaust groove (13) and the groove wall of the installation groove (41) enclose an air gap (2), the gas collecting part (12) and the groove wall of the installation groove (41) enclose a gas collecting channel (3), and the gas collecting channel (3) and the air gap (2) form the exhaust channel; An exhaust hole (42) is provided in the tread block (4), and the gas collecting channel (3) communicates with the exhaust hole (42).

9. The pattern block (4) according to claim 8, characterized in that, The end surface of the exhaust part (11) is flush with the cavity surface (43); and / or, a forming part (16) is provided on the end surface of the exhaust part (11), and the forming part (16) protrudes from the cavity surface (43); and / or, the width of the air gap (2) is 0.03-0.1 mm; and / or, the material of the exhaust fin (1) is steel; And / or, a plurality of ribs (45) are provided on the cavity surface (43), and the exhaust fin (1) is disposed close to the ribs (45); And / or, the exhaust hole (42) is located on the assembly connection surface (44) of the pattern block (4), extends from the assembly connection surface (44) into the interior of the pattern block (4), and communicates with the installation groove (41).

10. Tire mold, characterized in that, Comprising the pattern block (4) according to claim 8 or 9.

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