A tire mold tread block without air holes and a tire mold

Abstract

The present invention relates to the field of tire manufacturing, and aims to improve the problem of rubber hair appearing on the tire tread after vulcanization in the prior art, and provides a tire mold pattern block without air holes and a tire mold. The tire mold pattern block without air holes provided in the embodiment of the present invention is composed of a plurality of pattern pieces arranged mutually, and an exhaust channel is formed between adjacent pattern pieces, and a receiving groove is provided on the cavity surface of the pattern piece, and an exhaust valve is installed in the receiving groove, and a first exhaust gap is formed between the outer wall of the exhaust valve and the inner wall of the exhaust valve. During the working process of the tire mold, the gas in the mold cavity can be discharged through the exhaust channel and the first exhaust gap at the same time, and the exhaust area is large and the exhaust effect is good. In addition, since there is no need to open an exhaust hole for exhaust, the problem of rubber hair appearing on the tire tread after vulcanization is avoided.

Description

Technical Field

[0001] The invention relates to the field of tire manufacturing, and in particular to a tire mold pattern block without air holes and a tire mold. Background Art

[0002] During the tire vulcanization process, in order to release the air in the mold cavity so that the rubber can be evenly distributed in the mold, the air in the mold cavity is generally discharged by opening multiple exhaust holes on the mold. During the working process, part of the colloid flows into the exhaust hole with the air to form rubber hair. When the tire is demolded, part of the rubber hair breaks in the mold exhaust hole. When the tire is vulcanized again, it will hinder the discharge of air in the cavity, and then the rubber cannot completely fill the entire mold cavity. Therefore, the mold exhaust hole needs to be cleaned after each use, which is very time-consuming and affects production efficiency; some rubber hair stands on the tire. In order to remove the rubber hair, special personnel and corresponding equipment have to be set up to trim it, which not only affects the appearance quality of the tire, but also the trimmed rubber hair can only be treated as waste, which wastes raw materials and increases production costs. In addition, the rubber hair is difficult to degrade naturally and pollutes the environment. Summary of the invention

[0003] One object of the present invention is to provide a tire mold pattern block without air holes, so as to improve the problem of rubber hair appearing on the tire tread after vulcanization in the prior art.

[0004] Another object of the present invention is to provide a tire mold comprising the above-mentioned pore-free tire mold tread block.

[0005] The embodiment of the present invention is achieved as follows:

[0006] A poreless tire mold pattern block comprises a plurality of pattern pieces arranged mutually to form a poreless tire mold pattern block, an exhaust channel is formed between adjacent pattern pieces; and an exhaust device arranged on the pattern pieces, the exhaust device having a first exhaust gap.

[0007] In one embodiment of the present invention:

[0008] The exhaust device comprises a receiving groove and an exhaust valve arranged on the cavity surface of the patterned sheet. The exhaust valve is installed in the receiving groove, and a first exhaust gap is formed between the outer wall of the exhaust valve and the inner wall of the receiving groove.

[0009] In one embodiment of the present invention:

[0010] The first exhaust gap is connected to the exhaust channel

[0011] In one embodiment of the present invention:

[0012] One end of the accommodating groove extends to the exhaust channel and is directly connected to the exhaust channel; the first exhaust gap is directly connected to the exhaust channel.

[0013] In one embodiment of the present invention:

[0014] The exhaust valve is also provided with a circumferential exhaust groove, and the first exhaust gap is connected with the exhaust channel through the circumferential exhaust groove.

[0015] In one embodiment of the present invention:

[0016] The exhaust valve comprises a valve core and a valve sleeve sleeved on the valve core, a first exhaust gap is formed between the outer wall of the valve sleeve and the inner wall of the accommodating groove, and a second exhaust gap is formed between the inner wall of the valve sleeve and the outer wall of the valve core.

[0017] In one embodiment of the present invention:

[0018] The second exhaust gap is communicated with the exhaust channel; or the second exhaust channel is directly communicated with the space on the side of the pattern sheet opposite to the cavity surface.

[0019] In one embodiment of the present invention:

[0020] The width of the second exhaust gap is 0.01mm-0.04mm.

[0021] In one embodiment of the present invention:

[0022] The valve core comprises a plurality of sub-valve cores which are sleeved in sequence, and a third exhaust gap is formed between adjacent sub-valve cores.

[0023] In one embodiment of the present invention:

[0024] The third exhaust gap is communicated with the exhaust channel; or the third exhaust channel is directly communicated with the space on the side of the pattern sheet opposite to the cavity surface.

[0025] In one embodiment of the present invention:

[0026] The exhaust device is arranged at the bottom of the ribs on the upper part of the pattern sheet.

[0027] In one embodiment of the present invention:

[0028] The exhaust device is arranged at the bottom of the steel sheet on the patterned sheet.

[0029] In one embodiment of the present invention:

[0030] The width of the first exhaust gap is 0.005mm-0.05mm, and the height is 0.5mm-5mm.

[0031] A tire mold comprises any one of the above-mentioned tire mold pattern blocks without pores.

[0032] The beneficial effects of the embodiments of the present invention are:

[0033] The tread block of a poreless tire mold provided by an embodiment of the present invention comprises a plurality of tread pieces and an exhaust device, an exhaust channel is formed between adjacent tread pieces, and the exhaust device has a first exhaust gap. During the operation of the tire mold, part of the air from the mold cavity is directly discharged from the mold through the exhaust channel; the other part of the air is discharged from the mold through the first exhaust gap. This avoids the problem of rubber hair on the tire tread caused by directly opening exhaust holes on the cavity surface of the tread block of the poreless tire mold. Furthermore, since exhaust can be simultaneously performed through the exhaust channel and the first exhaust gap, the exhaust area is large, the exhaust effect is good, and the rubber can be evenly distributed in the mold.

[0034] The tire mold provided by the present invention includes the above-mentioned tire mold pattern block without air holes, and therefore also has the beneficial effect of preventing the appearance of rubber hair on the tire tread after vulcanization. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A schematic diagram of the overall structure of a tire mold tread block without pores provided in Example 1 of the present invention at a first viewing angle;

[0037] Figure 2 This is a schematic diagram of the overall structure of the tread pieces in the tread block of the pore-free tire mold provided in Example 1 of the invention, which are arranged axially.

[0038] Figure 3 A schematic diagram of the structure of an exhaust device in a tread block of a tire mold without air holes provided in Example 1 of the present invention;

[0039] Figure 4 for Figure 3 A partial enlarged view of the IV in the middle;

[0040] Figure 5 A cross-sectional view of a tire mold tread block without air holes provided in Example 1 of the present invention at a second viewing angle;

[0041] Figure 6 A partial cross-sectional view of a tire mold provided in Example 1 of the present invention;

[0042] Figure 7 A schematic diagram of the structure of an exhaust device in a tread block of a tire mold without air holes provided in Example 2 of the present invention;

[0043] Figure 8 for Figure 7 A partial enlarged view of position VIII in the middle;

[0044] Fig. 9 A partial cross-sectional view of a tread block of a tire mold without pores provided in Example 3 of the present invention;

[0045] Fig.10 for Fig. 9 A partial enlarged view of the X in the middle;

[0046] Fig.11 for Figure 1 A partial enlarged view of point XI in the middle.

[0047] Icons: 010-tire mold; 011-base; 012-upper cover; 013-tire mold side plate; 014-guide ring mechanism; 015-mold cavity; 100-porous tire mold tread block; 110-tread piece; 111-exhaust channel; 112-cavity surface; 113-threaded hole; 114-connecting hole; 120-exhaust device; 121-accommodating groove; 121a-groove; 130-exhaust valve; 130a-first exhaust gap; 130b-circumferential exhaust groove; 131-valve sleeve; 132-valve core; 132a-second exhaust gap; 133-boss; 140-positioning bolt; 152-rib. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0051] In the description of the embodiments of the present invention, it should be noted that the terms “first”, “second”, etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0052] Example 1

[0053] Figure 1 This is a schematic diagram of the overall structure of the tire mold block 100 without air holes provided in this embodiment under the first viewing angle. Figure 1 The present embodiment provides a tire mold pattern block 100 without air holes, which includes a plurality of pattern pieces 110 arranged mutually, and an exhaust device 120. An exhaust channel 111 is formed between adjacent pattern pieces 110. The exhaust device 120 has a first exhaust gap 130a. The cavity surface 112 of the pattern piece 110 is used to shape the pattern of the tire tread.

[0054] The tire mold tread block 100 without air holes provided in this embodiment is further described below:

[0055] Please continue to refer to Figure 1 In this embodiment, a plurality of pattern pieces 110 are arranged and matched along the circumferential direction to form a tire mold pattern block 100 without air holes, and the gaps between adjacent pattern pieces 110 serve as exhaust channels 111. In other embodiments, a plurality of pattern pieces 110 can also be arranged and matched along the axial direction to form a tire mold pattern block 100 without air holes (such as Figure 2 shown).

[0056] Figure 3 This is a schematic diagram of the structure of the exhaust device 120 in the tire mold tread block 100 without air holes provided in this embodiment. Figure 4 for Figure 3 Partial enlarged view of IV in the middle. Please refer to Figure 3 and Figure 4 In this embodiment, the exhaust device 120 includes a receiving groove 121 and an exhaust valve 130 provided on the cavity surface 112 of the pattern sheet 110. The exhaust valve 130 is installed in the receiving groove 121. A first exhaust gap 130a is formed between the outer wall of the exhaust valve 130 and the inner wall of the receiving groove 121. The position of the receiving groove 121 and the cross-sectional shape along the circumferential direction can be set as required. In this embodiment, the cross-sectional shape of the receiving groove 121 is an oblong shape. In other embodiments, it can also be set to a circular shape or a square shape.

[0057] Please continue to refer to Figure 3 and Figure 4In this embodiment, the exhaust valve 130 includes a valve sleeve 131 and a valve core 132, and the valve sleeve 131 is sleeved on the valve core 132. At one end close to the cavity surface 112 of the patterned sheet 110, a first exhaust gap 130a is formed between the outer wall of the valve sleeve 131 and the inner wall of the receiving groove 121. In this embodiment, the first exhaust gap 130a is an annular gap formed by cutting the outer wall of the valve sleeve 131 to a certain width. In other embodiments, the first exhaust gap 130a can also be formed by cutting the inner wall of the receiving groove 121 to a certain width. At one end close to the cavity surface 112 of the patterned sheet 110, a second exhaust gap 132a is formed between the inner wall of the valve sleeve 131 and the outer wall of the valve core 132. In other embodiments, the valve core 132 can be configured to be composed of a plurality of sub-valve cores sleeved in sequence (not shown in the figure), and a third exhaust gap is formed between adjacent sub-valve cores. The number of sub-valve cores is specifically set according to needs, for example, 2, 3, etc.

[0058] It should be noted that in the present embodiment, the cross section of the exhaust valve 130 is an oblong shape. It is understandable that in other embodiments, the shape of the exhaust valve 130 may also be set according to the needs and the shape of the receiving groove 121 .

[0059] In order to prevent part of the colloid from entering the first exhaust gap 130a, the second exhaust gap 132a or the third exhaust gap to form rubber hair during the operation of the patterned sheet 110, and at the same time, to ensure that the exhaust valve 130 can exhaust smoothly and quickly, the width of the first exhaust gap 130a is set between 0.005mm and 0.05mm; the widths of the second exhaust gap 132a and the third exhaust gap are set between 0.01mm and 0.04mm. The heights of the first exhaust gap 130a, the second exhaust gap 132a and the third exhaust gap are set to be greater than 0.5mm, and can preferably be set between 0.5mm and 5mm.

[0060] Further, in the present embodiment, a circumferential exhaust groove 130b connected to the first exhaust gap 130a is circumferentially arranged on the valve sleeve 131 of the exhaust valve 130. The width of the circumferential exhaust groove 130b is set between 0.5mm-3mm, and the height is set to be greater than 1mm, preferably between 1mm-6mm. Since the width of the circumferential exhaust groove 130b is greater than the first exhaust gap 130a, after the gas enters the circumferential exhaust groove 130b from the first exhaust gap 130a, the resistance is reduced, so that the gas is discharged more smoothly, and the exhaust is avoided due to excessive air pressure. In the present embodiment, a through hole connecting the second exhaust gap 132a and the circumferential exhaust groove 130b is also provided on the exhaust valve 130. In other embodiments, the through hole can also connect the third exhaust gap, the second exhaust gap 132a and the circumferential exhaust groove 130b, so that the gas entering the third exhaust gap is discharged from the circumferential exhaust groove 130b.

[0061] Furthermore, in this embodiment, the patterned sheet 110 is provided with a connecting hole 114 connecting the circumferential exhaust groove 130b and the exhaust passage 111. In other embodiments, the receiving groove 121 may also be directly connected to the exhaust passage 111. For details, please refer to Figure X I, Figure X I Figure 1 In the enlarged view of the position XI of FIG. 1 , one end of the receiving groove 121 extends to the exhaust channel 111 and is connected to the exhaust channel 111. In this way, the first exhaust gap 130a formed between the outer wall of the exhaust valve 130 and the inner wall of the receiving groove 121 is directly connected to the exhaust channel 111, and the first exhaust gap 130a can directly discharge the gas into the exhaust channel 111. The gas passes through the first exhaust gap 130a and the second exhaust gap 132a and is collected in the circumferential exhaust groove 130b, then passes through the circumferential exhaust groove 130b and enters the communicating hole 114, and finally passes through the communicating hole 114 and enters the exhaust channel 111 to be discharged from the patterned sheet 110. In other embodiments, an exhaust hole connected to the circumferential exhaust groove 130b may be directly provided on the outer side of the pattern sheet 110, and the gas entering the circumferential exhaust groove 130b is directly discharged from the pattern sheet 110 through the exhaust hole, or an axial exhaust groove connected to the circumferential exhaust groove 130b is provided on the outer wall of the valve sleeve 131, so that the gas entering the circumferential exhaust groove 130b is directly discharged from the mold through the axial exhaust groove. In other embodiments, an exhaust hole connected to the second exhaust gap 132a or the third exhaust gap may be directly provided on the outer side of the pattern sheet 110, and the gas entering the second exhaust gap 132a or the third exhaust gap is directly discharged from the pattern sheet 110 through the exhaust hole.

[0062] Furthermore, a boss 133 is provided at one end of the exhaust valve 130 away from the cavity surface 112 of the pattern sheet 110, and a groove 121a is provided at one end of the receiving groove 121 away from the cavity surface 112 of the pattern sheet 110. The boss 133 is clamped in the groove 121a to limit the exhaust valve 130 in the axial direction so that the exhaust valve 130 will not detach from the upper part of the receiving groove 121.

[0063] Figure 5 This is a partial cross-sectional view of the tire mold pattern block 100 without air holes provided in this embodiment under the second viewing angle. Figure 5 In this embodiment, a threaded hole 113 is provided in a direction extending from the outer side to the inner side of the patterned sheet 110 and connected to the receiving groove 121. A positioning bolt 140 is threadedly connected in the threaded hole 113, and one end of the positioning bolt 140 abuts against the exhaust valve 130. When the positioning bolt 140 is tightened, the exhaust valve 130 is firmly fixed and is not easy to fall off.

[0064] It should be noted that in the present embodiment, the exhaust valve 130 is fixed by a positioning bolt 140. It is understandable that in other specific embodiments, the exhaust valve 130 may be fixed in other ways according to user needs, such as using a positioning pin to fix the exhaust valve 130 in the receiving groove 121.

[0065] The tire mold pattern block 100 without air holes provided in the embodiment of the present invention is composed of a plurality of pattern pieces 110 arranged in an arrangement, and an exhaust channel 111 is formed between adjacent pattern pieces 110, and part of the gas in the mold cavity can be directly discharged from the mold through the exhaust channel 111. A receiving groove 121 is also provided on the mold cavity surface 112 of the pattern piece 110, and an exhaust valve 130 is installed in the receiving groove 121. A first exhaust gap 130a is formed between the outer wall of the exhaust valve 130 and the inner wall of the receiving groove 121, and a second exhaust gap 132a is formed between the inner wall of the valve sleeve 131 of the exhaust valve 130 and the inner wall of the valve core 132. A circumferential exhaust groove 130b is also provided on the exhaust valve 130, and the circumferential exhaust groove 130b is connected with the first exhaust gap 130a and the second exhaust gap 132a. The connecting hole 114 provided on the pattern piece 110 connects the circumferential exhaust groove 130b with the exhaust channel 111. Part of the air in the mold cavity is collected into the circumferential exhaust groove 130b through the first exhaust gap 130a and the second exhaust gap 132a, enters the connecting hole 114 through the circumferential exhaust groove 130b, and finally enters the exhaust channel 111 through the connecting hole 114 to be discharged from the mold.

[0066] In summary, the poreless tire mold pattern block 100 provided by the embodiment of the present invention can discharge the air from the mold cavity through the first exhaust slit 130a, the second exhaust slit 132a and the exhaust channel 111 at the same time during the working process of the tire mold 010, with a large exhaust area and good exhaust effect. Since there is no need to open an exhaust hole on the poreless tire mold pattern block 100 for exhaust, the problem of rubber hair on the tire tread and rubber hair blocking the exhaust hole caused by the colloid entering the exhaust hole during the vulcanization process is avoided. In addition, the exhaust valve 130 can be set at the position of the pattern piece 110 as needed, and the poreless tire mold pattern block 100 can ensure that the air nearby can be discharged quickly and smoothly, further enhancing the exhaust effect. The exhaust valve 130 is large in size and can be better fixed to the mold. At the same time, it can be easily replaced or cleaned and can withstand greater impact force, avoiding the problem that the existing pore sleeve falls off and is difficult to clean after being blocked. The exhaust valve 130 can even be disassembled for cleaning, and reassembled after cleaning, and cleaned thoroughly.

[0067] A tire mold 010 is also provided in an embodiment of the present invention. Figure 6 This is a partial cross-sectional view of the tire mold 010 provided by the present invention. Figure 6The tire mold 010 includes an upper cover 012 and a base 011 arranged opposite to each other, and a plurality of tire mold pattern blocks 100 without air holes arranged radially outside the base 011. The lower bottom surface of the upper cover 012 of the tire mold 010 and the upper surface of the base 011 are respectively fixedly connected with tire mold side plates 013. When the tire mold 010 is opened or closed, the plurality of tire mold pattern blocks 100 without air holes are closed or opened under the action of the guide ring mechanism 014. Figure 6 As shown, the tire mold 010 is in a mold-closing state, and the tire mold pattern block 100 without air holes and the tire mold side plate 013 together form a mold cavity 015. During the vulcanization process of the tire, part of the gas in the mold cavity 015 is discharged from the mold through the exhaust channel 111; part of the gas is collected into the circumferential exhaust groove 130b through the first exhaust gap 130a and the second exhaust gap 132a, and then enters the connecting hole 114 through the circumferential exhaust groove 130b, and finally enters the exhaust channel 111 through the connecting hole 114, thereby being discharged from the mold.

[0068] Since the tire mold 010 provided in this embodiment has the above-mentioned pore-free tire mold pattern block 100, it also has the beneficial effect of being able to avoid the appearance of rubber hair on the tire tread after vulcanization and having a good exhaust effect.

[0069] Example 2

[0070] This embodiment also provides a pore-free tire mold tread block 100. This embodiment is a further improvement on the technical solution of the first embodiment. The technical solution described in the first embodiment is also applicable to this embodiment, and the technical solution described in the first embodiment will not be described again.

[0071] Figure 7 This is a schematic diagram of the structure of the exhaust device 120 in the tire mold tread block 100 without air holes provided in this embodiment. Figure 8 for Figure 7 Please refer to the enlarged view of the part VIII in the figure. Figure 7 and Figure 8 Specifically, the difference between this embodiment and embodiment 1 is that the exhaust valve 130 only includes a valve core 132, and a first exhaust gap 130a is formed between the outer wall of the valve core 132 and the inner wall of the accommodating groove 121 at one end close to the cavity surface 112 of the patterned sheet 110, and the outer wall of the valve core 132 is also provided with a circumferential exhaust groove 130b connected to the first exhaust gap 130a.

[0072] Example 3

[0073] This embodiment also provides a pore-free tire mold tread block 100. This embodiment is a further improvement on the technical solution of the first embodiment. The technical solution described in the first embodiment is also applicable to this embodiment, and the technical solution described in the first embodiment will not be described again.

[0074] Fig. 9 A partial cross-sectional view of a tire mold tread block 100 without air holes provided in this embodiment. Fig.10 for Fig. 9 The enlarged view of the part at X in the middle. Please refer to Fig. 9 and Fig.10 Specifically, the difference between this embodiment and embodiment 1 is that the exhaust valve 130 is connected to the bottom of the rib 152. When the exhaust valve 130 is installed in the receiving groove 121, a complete rib 152 is formed. Since the exhaust valve 130 is connected to the bottom of the rib 152, the gas near the rib 152 can be quickly discharged through the first exhaust gap 130a, thereby avoiding defects such as lack of glue and visible scars on the tread pattern after the tire is vulcanized.

[0075] In other embodiments, the exhaust valve 130 may also be disposed at the bottom of the steel sheet (not shown in the figure).

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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. A tire mold tread block without air holes, characterized in that: include: A plurality of pattern sheets, wherein the plurality of pattern sheets are mutually arranged to form the pattern block, and an exhaust channel is formed between adjacent pattern sheets; as well as An exhaust device is arranged on the patterned sheet, and the exhaust device has a first exhaust gap; The exhaust device comprises a receiving groove and an exhaust valve arranged on the cavity surface of the patterned sheet, the exhaust valve is installed in the receiving groove, and the first exhaust gap is formed between the outer wall of the exhaust valve and the inner wall of the receiving groove; the exhaust valve comprises a valve core and a valve sleeve sleeved on the valve core; The first exhaust gap is in communication with the exhaust channel; Wherein, the accommodating groove is directly connected to the exhaust channel; or, a circumferential exhaust groove connected to the first exhaust gap is circumferentially arranged on the valve sleeve of the exhaust valve, and a connecting hole connecting the circumferential exhaust groove and the exhaust channel is arranged on the patterned sheet.

2. The tire mold tread block without pores according to claim 1, characterized in that: One end of the containing groove extends to the exhaust channel and is directly connected to the exhaust channel; the first exhaust gap is directly connected to the exhaust channel.

3. The tire mold tread block without pores according to claim 1, characterized in that: The exhaust valve is also provided with a circumferential exhaust groove, and the first exhaust gap is connected with the exhaust channel through the circumferential exhaust groove.

4. The tire mold tread block without pores according to claim 1, characterized in that: The first exhaust gap is formed between the outer wall of the valve sleeve and the inner wall of the accommodating groove, and the second exhaust gap is formed between the inner wall of the valve sleeve and the outer wall of the valve core.

5. The tire mold tread block without air holes according to claim 4, characterized in that: The second exhaust gap is communicated with the exhaust channel; or the second exhaust gap is directly communicated with the space on the side of the pattern sheet opposite to the cavity surface.

6. The tire mold tread block without air holes according to claim 4, characterized in that: The width of the second exhaust gap is 0.01 mm-0.04 mm.

7. The tire mold tread block without air holes according to claim 4, characterized in that: The valve core comprises a plurality of sub-valve cores which are sleeved in sequence, and a third exhaust gap is formed between adjacent sub-valve cores.

8. The tire mold tread block without air holes according to claim 7, characterized in that: The third exhaust gap is connected to the exhaust channel; or the third exhaust gap is directly connected to the space on the side of the pattern sheet opposite to the cavity surface.

9. The tire mold tread block without air holes according to claim 1, characterized in that: The exhaust device is arranged at the bottom of the ribs on the upper part of the pattern sheet.

10. The tire mold tread block without air holes according to claim 1, characterized in that: The exhaust device is arranged at the bottom of the steel sheet on the patterned sheet.

11. The tire mold tread block without pores according to any one of claims 1 to 10, characterized in that: The first exhaust gap has a width of 0.005 mm-0.05 mm and a height of 0.5 mm-5 mm.

12. A tire mold, characterized in that: The tire mold comprises a pore-free tire mold tread block as described in any one of claims 1-11.

Images