Pattern block with exhaust channel and tire vulcanization mold

Abstract

The utility model discloses a pattern block with an exhaust channel and a tire vulcanization mold, the pattern block comprises stacked pattern sheets, and each pattern sheet is provided with an auxiliary groove forming part; the concave part of the end surface of the auxiliary groove forming part forms an auxiliary groove; each pattern sheet is also provided with an end face exhaust groove and a through hole; the through holes penetrate in the thickness direction of the pattern piece, the auxiliary grooves and the end face exhaust grooves are located in the same end face of the pattern piece, and the auxiliary grooves, the end face exhaust grooves and the through holes are sequentially communicated; an exhaust gap is formed between every two adjacent pattern pieces; the exhaust gap is connected with the inner circumferential face of the tire vulcanization mold and extends in the circumferential direction, and the auxiliary groove and the end face exhaust groove are both communicated with the exhaust gap. Through the arrangement of the exhaust gap, when a tire is manufactured, gas in the inner cavity of the tire vulcanization mold can be fully exhausted in time, and the tire production efficiency is improved; meanwhile, due to the arrangement of the auxiliary grooves, the exhaust gaps are prevented from being stuck with rubber materials, and the service life of the tire vulcanization mold is prolonged.

Description

Technical Field

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

[0002] A tire is a rubber part assembled on various vehicles or machines. It can roll on the ground and is an essential part during vehicle driving. A tire has a strong load-bearing capacity and a buffering performance. It can support the entire weight of the vehicle and ensure the adhesion between the wheel and the ground.

[0003] The production process of a tire cannot do without a mold. A large amount of gas is generated during the injection molding of a tire vulcanization mold. However, the traditional tire vulcanization mold exhausts gas through pores. In this way, during exhaust, the exhaust is not sufficient, resulting in the gas in the inner cavity of the tire vulcanization mold not being fully exhausted, which affects the molding of the tire. Summary of the Utility Model

[0004] In view of this, the utility model provides a tread block with an exhaust passage, which is provided with an exhaust gap for exhaust, so that the gas in the inner cavity of the tire vulcanization mold can be timely and fully exhausted, thereby improving the production efficiency of the tire.

[0005] The utility model also provides a tire vulcanization mold including the above-mentioned tread block.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A tread block with an exhaust passage is used to form a tire vulcanization mold. The tread block includes a plurality of tread sheets stacked up and down, and further includes:

[0008] A sub-groove forming portion is provided on the inner peripheral wall of each tread sheet; the sub-groove forming portion protrudes towards the center line of the tread sheet, and the end face of the sub-groove forming portion is flush with the end face of the tread sheet, and the recessed part of the end face of the sub-groove forming portion forms a sub-groove;

[0009] Each tread sheet is further provided with an end face exhaust groove and a through hole; the through hole penetrates along the thickness direction of the tread sheet, and the sub-groove and the end face exhaust groove are located on the same end face of the tread sheet, and the sub-groove, the end face exhaust groove and the through hole are sequentially communicated;

[0010] After adjacent tread sheets are stacked and attached, an exhaust gap is formed between adjacent tread sheets; the exhaust gap is connected to the inner peripheral surface of the tire vulcanization mold and extends circumferentially, and both the sub-groove and the end face exhaust groove are communicated with the exhaust gap.

[0011] Preferably, the number of the sub-groove forming parts is multiple;

[0012] The multiple sub-groove forming parts are circumferentially distributed along the inner peripheral wall of the tread piece, and the end faces of the multiple sub-groove forming parts are all provided with the sub-grooves;

[0013] The multiple sub-grooves are all located between the tire vulcanization mold cavity and the end face exhaust groove, and are respectively communicated with the exhaust gap and the end face exhaust groove.

[0014] Preferably, the multiple sub-groove forming parts provided with the sub-grooves are circumferentially and uniformly distributed along the inner peripheral wall of the tread piece.

[0015] Preferably, the wall thickness between the sub-groove and the tire vulcanization mold cavity is 0.6-2 mm.

[0016] Preferably, the end face exhaust groove includes: a first end face exhaust groove provided on the first surface of the tread piece, and a second end face exhaust groove provided on the second surface of the tread piece; the first end face exhaust groove and the second end face exhaust groove are arranged back to back;

[0017] The sub-groove includes: a first sub-groove formed by a part recessed from the first surface of the sub-groove forming part, and a second sub-groove formed by a part recessed from the second surface of the sub-groove forming part;

[0018] After the adjacent tread pieces are stacked in a fitting manner;

[0019] For the adjacent tread pieces, the first end face exhaust groove of the upper tread piece and the second end face exhaust groove of the lower adjacent tread piece are relatively fitted; and after the first end face exhaust groove and the second end face exhaust groove are fitted, they are both communicated with the exhaust gap;

[0020] For the adjacent tread pieces, the first sub-groove of the upper tread piece and the second sub-groove of the lower adjacent tread piece are relatively fitted; and after the first sub-groove and the second sub-groove are fitted, they are both communicated with the exhaust gap.

[0021] Preferably, the end face exhaust groove is divided into a circumferential exhaust groove and a radial exhaust groove;

[0022] The part where the end face of the tread piece is recessed circumferentially forms the circumferential exhaust groove, and the part where the end face of the tread piece is recessed radially forms the radial exhaust groove;

[0023] The sub-groove, the circumferential exhaust groove, the radial exhaust groove and the through hole are sequentially communicated, and both the sub-groove and the circumferential exhaust groove are communicated with the exhaust gap.

[0024] Preferably, the projections of the secondary grooves and the radial exhaust grooves in the radial direction of the tread segments are staggered from each other.

[0025] Preferably, the wall thickness between the circumferential exhaust groove and the mold cavity is 0.6 - 2 mm.

[0026] Preferably, each of the tread segments is provided with a connection hole penetrating along its thickness direction;

[0027] After a plurality of the tread segments are stacked and fitted together, a connecting member sequentially passes through the connection holes of each of the tread segments and is connected and fixed to form the tread block.

[0028] A tire vulcanization mold includes the above-mentioned tread block;

[0029] The through hole of the tread segment located at the uppermost end in the tread block communicates with the outside of the mold, and / or the through hole of the tread segment located at the lowermost end in the tread block communicates with the outside of the mold.

[0030] As can be seen from the above technical solutions, the tread block with an exhaust channel provided by the present invention enables the gas in the inner cavity of the tire vulcanization mold to be discharged in a timely and sufficient manner during tire manufacturing through the arrangement of the exhaust gaps, improving the efficiency of tire production; and there is no hair gum production, making the produced tires more beautiful; at the same time, the setting of the secondary grooves avoids the adhesion of the exhaust gaps to the rubber compound, improving the service life of the tire vulcanization mold.

[0031] The present invention also provides a tire vulcanization mold. Since the above-mentioned tread block is adopted, it accordingly has corresponding beneficial effects, which can be specifically referred to the previous description and will not be elaborated herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0033] Figure 1 It is a front structural schematic diagram of two stacked tread segments of the tread block provided by the embodiment of the present invention;

[0034] Figure 2 It is a back structural schematic diagram of two stacked tread segments of the tread block provided by the embodiment of the present invention;

[0035] Figure 3 It is a radial cross-sectional view after two tread segments are stacked;

[0036] Figure 4 Structural schematic diagram of the tread block provided by the embodiment of the present invention (hidden through hole);

[0037] Figure 5 Structural schematic diagram of the tire vulcanizing mold provided by the embodiment of the present invention (hidden through hole).

[0038] Wherein, 1 is the tread block, 11 is the tread piece, 111 is the sub-groove forming part, 112 is the sub-groove, 1121 is the first sub-groove, 1122 is the second sub-groove, 113 is the end face exhaust groove, 1131 is the first end face exhaust groove, 1132 is the second end face exhaust groove, 114 is the through hole, 115 is the exhaust gap, 116 is the circumferential exhaust groove, 117 is the radial exhaust groove, 118 is the connecting hole. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] A tread block with an exhaust passage provided by the embodiment of the present invention is used to form a tire vulcanizing mold. As Figures 1 - 5 shown, the tread block includes a plurality of stacked tread pieces 11

[0041] As Figure 1 shown, the inner peripheral wall of each tread piece 11 is provided with a sub-groove forming part 111; the sub-groove forming part 111 protrudes towards the center line direction of the tread piece 11, and the end face of the sub-groove forming part 111 is flush with the end face of the tread piece 11, and the recessed part of the end face of the sub-groove forming part 111 forms a sub-groove 112;

[0042] Each tread piece 11 is also provided with an end face exhaust groove 113 and a through hole 114; the through hole 114 penetrates along the thickness direction of the tread piece 11, and the sub-groove 112 and the end face exhaust groove 113 are located on the same end face of the tread piece 11, and the sub-groove 112, the end face exhaust groove 113 and the through hole 114 are sequentially communicated;

[0043] After the adjacent tread pieces 11 are stacked and attached, an exhaust gap 115 is formed between the adjacent tread pieces 11; the exhaust gap 115 is connected to the inner peripheral surface of the tire vulcanizing mold and extends circumferentially, and both the sub-groove 112 and the end face exhaust groove 113 are connected to the exhaust gap 115.

[0044] In the above technical solution, when manufacturing the mold, a plurality of stacked tread pieces 11 form the tread block 1 (asFigure 4 As shown in the figure, multiple tread blocks 1 are assembled around the central axis to form a tire vulcanization mold (such as Figure 5 shown); when manufacturing a tire using the above tire vulcanization mold, a vulcanization reaction occurs in the cavity of the tire vulcanization mold. During the vulcanization process, the air in the cavity of the tire vulcanization mold is simultaneously discharged from the exhaust gap 115 to the secondary groove 112 and the end face exhaust groove 113, and then discharged to the through hole 114; compared with the existing technology, with such a setting, the exhaust is sufficient, enabling the gas in the inner cavity of the tire vulcanization mold to be discharged in a timely and sufficient manner, improving the efficiency of tire production and making the produced tires more beautiful.

[0045] It should be noted that adjacent tread pieces 11 are overlapped, and the exhaust gap 115 here is far from the end face exhaust groove 113. The rubber compound in the tire vulcanization mold penetrates into the tire through this exhaust gap 115 (referring to the exhaust gap 115 between the secondary groove 112 and the cavity of the tire vulcanization mold). The penetration process causes the exhaust gap 115 to stick with the rubber compound, resulting in poor exhaust. Through the setting of the secondary groove 112, the exhaust distance is shortened. The rubber compound in the tire vulcanization mold penetrates into the secondary groove 112, and the secondary groove 112 can directly discharge the rubber compound during the exhaust process, avoiding sticking. The exhaust gap 115 reducing the sticking of the rubber compound can improve the production efficiency, extend the vulcanization cycle of the mold, and increase the excellent product rate of the tires; and reducing the sticking of the rubber compound on the tire vulcanization mold facilitates the cleaning of the mold, increases the duration of each use of the mold, and improves the production efficiency.

[0046] It should also be noted that in some cases, a small amount of rubber compound may stick in the exhaust gap 115. If it does not affect the exhaust, it can continue to be used. If it affects the exhaust, the tire vulcanization mold is disassembled, the rubber compound is quickly cleaned, and then it can be put back into use.

[0047] Optimizing the above technical solution, as Figure 1 and Figure 2 shown, the number of secondary groove forming parts 111 is multiple;

[0048] Multiple secondary groove forming parts 111 are circumferentially distributed along the inner peripheral wall of the tread piece 11, and secondary grooves 112 are provided on the end faces of multiple secondary groove forming parts 111;

[0049] Multiple secondary grooves 112 are all located between the cavity of the tire vulcanization mold and the end face exhaust groove 113, and are respectively communicated with the exhaust gap 115 and the end face exhaust groove 113.

[0050] In the above technical solution, the setting of multiple secondary groove forming parts 111 can form multiple secondary grooves on the tire; the setting of multiple secondary grooves 112 makes the exhaust effect better and faster; at the same time, it avoids setting only one secondary groove 112, where the penetration of the rubber compound leads to poor exhaust effect during the tire manufacturing process.

[0051] Further optimize the above technical solution, such as Figure 1 and Figure 2 As shown, a plurality of sub-groove forming portions 111 provided with sub-grooves 112 are circumferentially and uniformly distributed along the inner peripheral wall of the tread piece 11.

[0052] In the above technical solution, a plurality of sub-grooves 112 are circumferentially and uniformly distributed along the inner peripheral wall of the tread piece 11, making the exhaust structure more reasonable and the exhaust more uniform.

[0053] Further optimize the above technical solution. The wall thickness between the sub-groove 112 and the cavity of the tire vulcanization mold is 0.6 - 2 mm, so that the rubber compound directly penetrates into the sub-groove 112, avoiding the rubber compound sticking to the exhaust gap 115 here (referring to the exhaust gap 115 between the sub-groove 112 and the cavity of the tire vulcanization mold), resulting in the exhaust gap 115 here being blocked by the stuck rubber compound.

[0054] In this technical solution, the end face exhaust groove 113 includes: a first end face exhaust groove 1131 provided on the first surface of the tread piece 11, and a second end face exhaust groove 1132 provided on the second surface of the tread piece 11; the first end face exhaust groove 1131 and the second end face exhaust groove 1132 are arranged back to back;

[0055] The sub-groove 112 includes: a first sub-groove 1121 formed by the part recessed from the first surface of the sub-groove forming portion 111, and a second sub-groove 1122 formed by the part recessed from the second surface of the sub-groove forming portion 111;

[0056] After the adjacent tread pieces 11 are stacked and fitted together;

[0057] Among the adjacent tread pieces 11, the first end face exhaust groove 1131 of the upper tread piece 11 and the second end face exhaust groove 1132 of the lower tread piece 11 in the adjacent tread pieces 11 are relatively fitted; and after the first end face exhaust groove 1131 and the second end face exhaust groove 1132 are fitted, they are both connected to the exhaust gap 115;

[0058] Among the adjacent tread pieces 11, the first sub-groove 1121 of the upper tread piece 11 and the second sub-groove 1122 of the lower tread piece 11 in the adjacent tread pieces 11 are relatively fitted; and after the first sub-groove 1121 and the second sub-groove 1122 are fitted, they are both connected to the exhaust gap 115.

[0059] In the above technical solution, by providing end face exhaust grooves 113 on both sides of the tread piece 11, the exhaust is more sufficient, the exhaust speed is faster, and the working efficiency of manufacturing tires is improved. At the same time, it is avoided that due to only providing end face exhaust grooves on one side and problems occurring on one side of the end face exhaust grooves, the exhaust function of the mold is affected.

[0060] In this technical solution, the end face exhaust groove 113 is divided into a circumferential exhaust groove 116 and a radial exhaust groove 117;

[0061] The circumferentially recessed portion of the end face of the tread piece 11 forms the circumferential exhaust groove 116, and the radially recessed portion of the end face of the tread piece 11 forms the radial exhaust groove 117;

[0062] The secondary groove 112, the circumferential exhaust groove 116, the radial exhaust groove 117, and the through hole 114 are connected in sequence, and both the secondary groove 112 and the circumferential exhaust groove 116 are connected to the exhaust gap 115.

[0063] In the above technical solution, through the circumferential exhaust groove 116 and the radial exhaust groove 117, the exhaust process is made smoother.

[0064] Optimizing the above technical solution, the projections of the secondary groove 112 and the radial exhaust groove 117 on the radial direction of the tread piece 11 are staggered from each other; with such a setting, when the air flow in the secondary groove 112 directly discharges into the radial exhaust groove 117, it can avoid the air flow in the circumferential exhaust groove 116 from being turbulent and chaotic, which is not conducive to smooth exhaust.

[0065] Optimizing the above technical solution, the wall thickness between the circumferential exhaust groove 116 and the mold cavity is 0.6 - 2 mm, so that the rubber compound can directly penetrate into the circumferential exhaust groove 116, avoiding the rubber compound from sticking to the exhaust gap 115 here (referring to the exhaust gap 115 between the circumferential exhaust groove 116 and the tire vulcanization mold cavity), resulting in the exhaust gap 115 here being stuck with the rubber compound and further causing the exhaust gap 115 here to be blocked.

[0066] In this technical solution, each tread piece 11 is provided with a connection hole 118 that penetrates along its thickness direction;

[0067] After a plurality of tread pieces 11 are stacked and fitted together, the connecting piece sequentially passes through the connection holes 118 of each tread piece 11 and is connected and fixed into the tread block 1.

[0068] In the above technical solution, through the arrangement of the connection holes 118, the tread pieces 11 can be quickly assembled into the tread block 1.

[0069] In this technical solution, the width of the end face exhaust groove 113 is 8 - 5 mm, and the depth is 1 - 3 mm.

[0070] A tire vulcanization mold, the mold includes the above-mentioned tread block, the through hole 114 of the tread piece 11 located at the uppermost end in the tread block 1 communicates with the outside of the mold, and / or, the through hole 114 of the tread piece 11 located at the lowermost end in the tread block 1 communicates with the outside of the mold.

[0071] In the above technical solution, the exhaust speed of this tire vulcanization mold is fast, and the gas in the inner cavity of the tire vulcanization mold can be fully exhausted. At the same time, since this tire vulcanization mold does not have air holes for exhaust, the tires manufactured using this tire vulcanization mold have no residual raw rubber, improving the aesthetics of the tires.

[0072] It should be noted that the tread blocks have multiple exhaust gaps 115, Figure 4 and Figure 5 are not shown one by one.

[0073] It should also be noted that the thickness of the tread piece 11 can be made into different thicknesses according to needs, such as Figure 1 and Figure 3 shown.

[0074] The technical features mentioned above, the technical features to be mentioned below, and the technical features shown separately in the drawings can be arbitrarily combined with each other, as long as the combined technical features are not mutually contradictory. All feasible feature combinations are the technical contents clearly recorded in this article. Any one of the sub-features included in the same statement can be independently applied without necessarily being applied together with other sub-features.

[0075] Advantages of this solution:

[0076] Reduce the situation of adhesive rubber after mold vulcanization, improve the exhaust during mold vulcanization, improve production efficiency and extend the vulcanization cycle, the mold is easy to clean, and the cost is reduced.

[0077] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0078] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pattern block with an exhaust channel, used to form a tire vulcanization mold, the pattern block (1) comprising a plurality of pattern sheets (11) stacked up and down, characterized in that: Also includes: The inner peripheral wall of each of the patterned sheets (11) is provided with a secondary groove forming portion (111); the secondary groove forming portion (111) protrudes toward the center line direction of the patterned sheet (11), and the end surface of the secondary groove forming portion (111) is flush with the end surface of the patterned sheet (11), and the concave portion of the end surface of the secondary groove forming portion (111) forms a secondary groove (112); Each of the patterned sheets (11) is further provided with an end face exhaust groove (113) and a through hole (114); the through hole (114) penetrates the patterned sheet (11) in the thickness direction, and the auxiliary groove (112) and the end face exhaust groove (113) are located on the same end face of the patterned sheet (11), and the auxiliary groove (112), the end face exhaust groove (113) and the through hole (114) are sequentially connected; After the adjacent pattern sheets (11) are laminated and stacked, an exhaust gap (115) is formed between the adjacent pattern sheets (11); the exhaust gap (115) is connected to the inner peripheral surface of the tire vulcanization mold and extends in the circumferential direction, and the auxiliary groove (112) and the end face exhaust groove (113) are both connected to the exhaust gap (115).

2. The pattern block according to claim 1, characterized in that: The number of the auxiliary groove forming parts (111) is plural; A plurality of the auxiliary groove forming portions (111) are distributed along the circumferential direction of the inner peripheral wall of the patterned sheet (11), and the end surfaces of the plurality of the auxiliary groove forming portions (111) are all provided with the auxiliary grooves (112); The plurality of auxiliary grooves (112) are all located in the tire vulcanization mold cavity and between the end surface exhaust groove (113), and are respectively connected to the exhaust gap (115) and the end surface exhaust groove (113).

3. The pattern block according to claim 2, characterized in that: A plurality of the auxiliary groove forming portions (111) provided with the auxiliary grooves (112) are evenly distributed along the circumferential direction of the inner peripheral wall of the patterned sheet (11).

4. The pattern block according to claim 1, characterized in that: The wall thickness between the auxiliary groove (112) and the tire vulcanization mold cavity is 0.6-2 mm.

5. The pattern block according to any one of claims 1 to 4, characterized in that: The end surface exhaust groove (113) comprises: a first end surface exhaust groove (1131) arranged on the first surface of the patterned sheet (11), and a second end surface exhaust groove (1132) arranged on the second surface of the patterned sheet (11); the first end surface exhaust groove (1131) and the second end surface exhaust groove (1132) are arranged back to back; The auxiliary groove (112) includes: a first auxiliary groove (1121) formed by a portion recessed from a first surface of the auxiliary groove forming portion (111), and a second auxiliary groove (1122) formed by a portion recessed from a second surface of the auxiliary groove forming portion (111); After the adjacent patterned sheets (11) are laminated and stacked; The first end surface exhaust groove (1131) of the upper patterned sheet (11) among the adjacent patterned sheets (11) and the second end surface exhaust groove (1132) of the lower patterned sheet (11) among the adjacent patterned sheets (11) are relatively fitted; and the first end surface exhaust groove (1131) and the second end surface exhaust groove (1132) are both connected to the exhaust gap (115) after fitting together; The first sub-groove (1121) of the upper patterned sheet (11) among the adjacent patterned sheets (11) and the second sub-groove (1122) of the lower patterned sheet (11) among the adjacent patterned sheets (11) are relatively fitted; and the first sub-groove (1121) and the second sub-groove (1122) are both connected to the exhaust gap (115) after fitting together.

6. The pattern block according to claim 1, characterized in that: The end surface exhaust groove (113) is divided into a circumferential exhaust groove (116) and a radial exhaust groove (117); The circumferentially recessed portion of the end surface of the patterned sheet (11) forms the circumferential exhaust groove (116), and the radially recessed portion of the end surface of the patterned sheet (11) forms the radial exhaust groove (117); The auxiliary groove (112), the circumferential exhaust groove (116), the radial exhaust groove (117) and the through hole (114) are connected in sequence, and the auxiliary groove (112) and the circumferential exhaust groove (116) are both connected to the exhaust gap (115).

7. The pattern block according to claim 6, characterized in that: The projections of the auxiliary groove (112) and the radial exhaust groove (117) in the radial direction of the pattern sheet (11) are staggered with each other.

8. The pattern block according to claim 6, characterized in that: The wall thickness between the circumferential exhaust groove (116) and the inside of the mold cavity is 0.6-2 mm.

9. The pattern block according to claim 1, characterized in that: Each of the patterned sheets (11) is provided with a connecting hole (118) penetrating along the thickness direction thereof; After a plurality of the pattern sheets (11) are laminated and stacked, a connecting piece is passed through the connecting hole (118) of each of the pattern sheets (11) in sequence to connect and fix them into the pattern block (1).

10. A tire vulcanization mold, characterized in that: Comprising a plurality of pattern blocks (1) according to any one of claims 1 to 9; The through hole (114) of the pattern piece (11) located at the uppermost end of the pattern block (1) is connected to the outside of the mold, and / or the through hole (114) of the pattern piece (11) located at the lowermost end of the pattern block (1) is connected to the outside of the mold.

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