CN217415383U - Tire blank and tire - Google Patents
Tire blank and tire Download PDFInfo
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- CN217415383U CN217415383U CN202221049123.0U CN202221049123U CN217415383U CN 217415383 U CN217415383 U CN 217415383U CN 202221049123 U CN202221049123 U CN 202221049123U CN 217415383 U CN217415383 U CN 217415383U
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Abstract
The utility model provides a tire blank and a tire, wherein the surface of the tire blank is divided into two face parts which are respectively arranged corresponding to two tread parts one by one; the plurality of grooves on each tread part form a plurality of groove projections on the corresponding surface body part, each surface body part is provided with a plurality of notches, the plurality of notches on each surface body part and the plurality of groove projections are arranged in one-to-one correspondence, and each notch is arranged at the corresponding groove projection; the plurality of grooves and the plurality of graver trend lines are arranged in a one-to-one correspondence manner, and each groove is arranged in an extending manner along the corresponding graver trend line. Set up the nick through in advance on the tire child embryo to follow-up reduce or avoid belted layer's bending deformation when extrudeing the tread groove on the tire child embryo, and then solved the child embryo of mining dump truck tire among the prior art and can cause belted layer bending deformation problem when extrudeing the tread groove.
Description
Technical Field
The utility model relates to a tire technical field particularly, relates to a tire embryo and tire.
Background
In the prior art, the depth of a groove of an ultra-large mining dump truck tire is deep, for example, the depth of a 57-inch tire groove can reach more than 90mm, and the depth of a 63-inch tire groove can reach more than 110 mm.
As shown in fig. 1, in the vulcanization process of the mining dump truck tire, a tire blank is extruded by using mold ribs 6 to form grooves 3 on the tire blank; however, the deep groove 3 of the mining dump truck tire causes the belt layer 1 to be subjected to relatively obvious bending deformation in the extrusion process, namely the belt layer 1 is wavy, and the use of the tire is greatly influenced.
SUMMERY OF THE UTILITY MODEL
A primary object of the utility model is to provide a tire child embryo and tire to the child embryo of the mining dump truck tire of solving among the prior art can cause the problem of belted layer bending deformation when extrusion tread groove.
In order to achieve the above object, according to one aspect of the present invention, there is provided a tire blank, the tire having a predetermined plane parallel to a central axis thereof, a projection intersection point of the central axis of the tire and a crown center line on the predetermined plane being a rotational symmetry center; the tread of the tire is divided into two tread parts by the central line of the tire crown, and the pattern structures on the two tread parts are arranged in central symmetry relative to the rotational symmetry center; the pattern structure on each tread portion comprises a plurality of pattern grooves, the pattern grooves are arranged at intervals along the circumferential direction of the tire, the first end of each pattern groove extends to the tire shoulder of the tire, and the second end of each pattern groove extends towards the central line of the crown and is arranged at intervals with the central line of the crown; the surface of the tire blank is divided into two surface parts, and the two surface parts are respectively arranged in one-to-one correspondence with the two tread parts; the plurality of grooves on each tread part form a plurality of groove projections on the corresponding surface body part, each surface body part is provided with a plurality of notches, the plurality of notches on each surface body part and the plurality of groove projections are arranged in one-to-one correspondence, and each notch is arranged at the corresponding groove projection; the plurality of grooves and the plurality of graver trend lines are arranged in a one-to-one correspondence manner, and each groove is arranged along the corresponding graver trend line in an extending manner.
Furthermore, the first end of each groove projection is a line segment extending along the circumferential direction of the tire, the midpoint of the line segment of the first end of each groove projection forms a first preset point, and each nicking tool trend line passes through the first preset point of the corresponding groove projection.
Further, the second end of each groove projection is a straight line segment, and the midpoint of the second end of each groove projection in the groove width direction of the groove projection forms a second preset point; and the trend line of each nicking tool passes through a second preset point projected by a corresponding pattern groove.
Furthermore, the second end of each pattern groove projection is an arc line segment, and a second preset point is formed by the intersection point of the central axis of the arc line segment and the surface of the tire blank; and the trend line of each nicking tool passes through a second preset point projected by a corresponding pattern groove.
Furthermore, each pattern groove extends along the direction of a preset straight line, and the preset straight line of each pattern groove and the central line of the tire crown form an acute angle; or each pattern groove extends along the direction of a preset broken line, the preset broken line comprises a first straight line section and a second straight line section which are connected with each other, the first straight line section and the second straight line section are arranged in an obtuse angle mode, the first straight line section is positioned on one side, far away from the center line of the tire crown, of the second straight line section, and the second straight line section and the center line of the tire crown are arranged in an acute angle mode; or each tread groove extends along a preset arc direction, and the protruding directions of the plurality of pattern grooves on each tread portion along the circumferential direction of the tire are the same.
Furthermore, along the extending direction of the groove, both end parts of the groove are end points; the extending direction of a straight line passing through two end points of the groove is vertical to the depth direction of the groove; the maximum depth of the groove is h 2 Depth of groove h 1 ，h 2 ＝1/2h 1 ±10mm。
Furthermore, along the extending direction of the groove, both end parts of the groove are end points; the boundary line of the section of the groove, which is perpendicular to the extending direction of the groove, comprises a first side boundary line, a first arc line segment and a second side boundary line which are sequentially connected, the section of the groove, which is perpendicular to the extending direction of the groove, is provided with a first center line, and the first center line passes through the midpoint and the circle center of the first arc line segment; the first side boundary line and the second side boundary line are straight line segments; the first side boundary line is provided with a connecting end connected with the first arc line segment and a free end far away from the first arc line segment, and the first side boundary line is gradually far away from the first central line in the direction from the connecting end to the free end of the first side boundary line; and/or the second side boundary line is provided with a connecting end connected with the first arc line segment and a free end far away from the first arc line segment, and the second side boundary line is gradually far away from the first central line from the direction from the connecting end to the free end of the second side boundary line.
Further, the first side boundary line and the second side boundary line are arranged mirror-symmetrically with respect to the first centre line.
Further, the second preset point is a knife entering point of the nicking knife.
According to another aspect of the present invention, a tire is provided, which comprises the above-mentioned tire blank.
By applying the technical scheme of the utility model, the tire is provided with a preset plane parallel to the central axis of the tire, and the projection intersection point of the central axis of the tire and the central line of the tire crown on the preset plane is a rotational symmetry center; the tread of the tire is divided into two tread parts by the central line of the tire crown, and the pattern structures on the two tread parts are arranged in central symmetry relative to the rotational symmetry center; the pattern structure on each tread portion comprises a plurality of pattern grooves, the pattern grooves are arranged at intervals along the circumferential direction of the tire, the first end of each pattern groove extends to the tire shoulder of the tire, and the second end of each pattern groove extends towards the central line of the crown and is arranged at intervals with the central line of the crown; the tire tread center line divides the surface of the tire blank into two surface parts, and the two surface parts are respectively arranged in one-to-one correspondence with the two tread parts; the plurality of grooves on each tread part form a plurality of groove projections on the corresponding surface body part, each surface body part is provided with a plurality of notches, the plurality of notches on each surface body part are arranged in one-to-one correspondence with the plurality of groove projections, and each notch is arranged at the corresponding groove projection; the plurality of grooves and the plurality of graver trend lines are arranged in a one-to-one correspondence manner, and each groove is arranged in an extending manner along the corresponding graver trend line. The grooving is arranged on the tire blank in advance, so that the bending deformation of the belted layer is reduced or avoided when the groove is extruded on the tire blank subsequently, and the problem that the bending deformation of the belted layer can be caused when the groove is extruded on the tire blank of the mining dump truck tire in the prior art is solved.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram illustrating a prior art method for extruding a green tire using a mold rib;
figure 2 shows a schematic view of a first arrangement of the second end of the groove of the tyre according to the present invention; wherein the grooves take a first form of extension;
FIG. 3 shows a schematic illustration of the projection of the groove of FIG. 2 onto the surface of the tire blank and the structure of the line of the groove cutter;
figure 4 shows a schematic view of the structure of a second end of a groove of a tyre according to the present invention, in a second arrangement; wherein the groove takes a second form of extension;
FIG. 5 shows a schematic illustration of the projection of the groove of FIG. 4 onto the surface of the tire blank and the structure of the grooved cutter course;
figure 6 shows a schematic view of the structure of a second end of a groove of a tyre according to the present invention, in a second arrangement; wherein the groove adopts a third extension form;
FIG. 7 shows a schematic illustration of the projection of the groove of FIG. 6 onto the surface of the tire blank and the structure of the ruled line of the groove;
FIG. 8 shows a schematic depth view of the groove of the green tire according to the invention;
figure 9 shows a schematic view of the structure of the groove on the green tyre according to the present invention;
FIG. 10 shows a schematic structural view of a section of the groove in the green tyre of FIG. 9 perpendicular to its extension;
fig. 11 shows a schematic structural view of a nicking tool according to the present invention;
fig. 12 shows the shape of the rubber block carved from the tire blank by the carving knife according to the present invention.
Wherein the figures include the following reference numerals:
1. a belt ply; 3. a pattern groove; 6. forming ribs on the mold;
10. a tire blank; 11. a face body part; 12. the trend line of the nicking tool; 121. a first preset point; 122. a second preset point; 13. grooving; 131. a first side boundary line; 132. a first arc segment; 133. a second side boundary line; 20. a pattern groove; 21. pattern groove projection; 30. a crown centerline; 31. a tread portion;
40. engraving; 41. a first boundary line segment; 42. a second boundary line segment; 421. a first straight line segment; 422. a second arc segment; 423. a second straight line segment; 50. and (5) gluing blocks.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a tire blank 10, please refer to fig. 2 to 10, the tire has a predetermined plane parallel to the central axis thereof, the projection intersection point of the central axis of the tire and the crown central line 30 on the predetermined plane is the rotational symmetry center; the tread of the tire is divided into two tread portions 31 by the crown center line 30, and pattern structures on the two tread portions 31 are arranged in central symmetry relative to the rotational symmetry center; the pattern structure on each tread portion 31 includes a plurality of grooves 20, the plurality of grooves 20 on each tread portion 31 being spaced circumferentially of the tire, a first end of each groove 20 extending to the shoulder of the tire, a second end of each groove 20 extending toward the crown centerline 30 and being spaced from the crown centerline 30; the crown center line 30 divides the surface of the tire blank 10 into two surface parts 11, and the two surface parts 11 are respectively arranged corresponding to the two tread parts 31 one by one; the plurality of grooves 20 on each tread portion 31 form a plurality of groove projections 21 on the corresponding face body portion 11, a plurality of notches 13 are provided on each face body portion 11, the plurality of notches 13 on each face body portion 11 are provided in one-to-one correspondence with the plurality of groove projections 21, and each notch 13 is provided at the corresponding groove projection 21; the plurality of notches 13 are provided in one-to-one correspondence with the plurality of nicking tool running lines 12, and each of the notches 13 is provided to extend along the corresponding nicking tool running line 12. The grooves 13 are arranged on the tire blank 10 in advance, so that bending deformation of the belted layer is reduced or avoided when the grooves 20 are extruded on the tire blank 10 subsequently, and the problem that the belted layer is bent and deformed when the grooves are extruded on the tire blank of the mining dump truck tire in the prior art is solved, and therefore the service durability of the mining dump truck tire is improved.
It should be noted that the tire blank 10 of the present application refers to a tire body before the tire is not pressed against the groove 20, the surface of the tire blank 10 refers to a tire tread before the tire is not pressed against the groove 20, and each of the tread portions 11 refers to a tread before the corresponding tread portion 31 is not pressed against the groove 20.
In a specific implementation process, the extension direction of the corresponding groove 13, namely the shape of the corresponding nicking tool trend line 12, is determined according to the shape of each groove 20, so that the extension direction of each groove 13 is matched with the extension direction of the corresponding groove 20.
In the present embodiment, the first end of each groove projection 21 is a line segment extending in the tire circumferential direction, the midpoint of the line segment of the first end of each groove projection 21 forms a first preset point 121, and each nicking tool strike line 12 passes through the first preset point 121 of the corresponding groove projection 21.
It should be noted that the line segment of the first end of each groove projection 21 has two end points, which are the first end point and the second end point respectively; the length L in the tire circumferential direction between the first end point and the first preset point 121 1 And a length L in the tire circumferential direction between the second end point and the first presetting point 121 2 Are equal.
In the present embodiment, the first arrangement of the second end of the groove 20 is: as shown in fig. 2 and 3, the end wall surface of the second end of each groove 20 is a flat surface; that is, the second end of each groove projection 21 is a straight line segment, and the midpoint of the second end of each groove projection 21 in the groove width direction of the groove projection 21 forms a second preset point 122; each nicking tool strike line 12 passes through a second preset point 122 of the corresponding groove projection 21; the groove width direction of the groove projection 21 is perpendicular to the extending direction of the groove projection 21.
Specifically, the second end of each groove projection 21 has two end points in the groove width direction of the groove projection 21, the two end points being a third end point and a fourth end point, respectively; the width S between the third end point and the second preset point 122 along the groove width direction of the groove projection 21 1 And a width S between the fourth end point and the second preset point 122 in the groove width direction of the groove projection 21 2 Are equal.
Alternatively, for each groove 20, the groove 20 has two side wall surfaces in the groove width direction of the groove 20; an arc chamfer is provided between the end wall surface of the second end of the groove 20 and each side wall surface of the groove 20; the groove width direction of the groove 20 is perpendicular to the extending direction thereof.
In the present embodiment, the second end of the groove 20 is provided in the second arrangement form: as shown in fig. 4 to 7, the end wall surface of the second end of each groove 20 is an arc surface, that is, the second end of each groove projection 21 is an arc segment, and the intersection point of the central axis of the arc segment and the surface of the tire blank 10 forms a second preset point 122; each nicking tool strike line 12 passes through a second preset point 122 of the corresponding groove projection 21; the central axis of the arc line segment here refers to the central axis of the arc surface here.
Specifically, the arc surface is a part of a preset cylindrical surface along the circumferential direction thereof; optionally, the arc surface is a semi-arc surface, that is, the arc surface is a half of the preset cylindrical surface along the circumferential direction thereof.
In the present embodiment, the first form of extension of the groove 20 is: as shown in fig. 2 and 3, each groove 20 extends in a predetermined linear direction.
Specifically, the predetermined straight line of each groove 20 is disposed at an acute angle to the crown centerline 30, and the predetermined straight line directions of the plurality of grooves 20 on each tread portion 31 are all parallel to each other.
In the present embodiment, the second form of extension of the groove 20 is: as shown in fig. 4 and 5, each groove 20 extends along a preset folding line, the preset folding line includes a first straight line segment and a second straight line segment connected with each other, the first straight line segment and the second straight line segment are arranged in an obtuse angle, the first straight line segment is located on one side of the second straight line segment away from the crown center line 30, and the second straight line segment and the crown center line 30 are arranged in an acute angle.
Specifically, in any two grooves 20 on each tread portion 31, the preset folding line of one groove 20 is shifted by a preset distance in the circumferential direction of the tire to coincide with the preset folding line of the other groove 20.
In the present embodiment, the third form of extension of the groove 20 is: as shown in fig. 6 and 7, each groove 20 extends in a predetermined arc direction.
Specifically, the plurality of grooves 20 on each tread portion 31 are all the same in the projecting direction in the tire circumferential direction.
Further, in any two grooves 20 on each tread portion 31, the preset arc of one groove 20 is shifted by a predetermined distance in the circumferential direction of the tire to coincide with the preset arc of the other groove 20.
In the present embodiment, as shown in fig. 8 and 9, both end portions of the notch 13 are end points in the extending direction of the notch 13; the extending direction of the straight line passing through both end points of the groove 13 andthe depth direction of the groove 13 is vertical; the maximum depth of the groove 13 is h 2 The depth of the groove 20 is h 1 ，h 2 ＝1/2h 1 Plus or minus 10 mm; the depth direction of the groove 20 is perpendicular to the tread of the tire, and the depths of the grooves 20 in the respective tread portions 31 are all equal.
Preferably, h 2 ＝1/2h 1 (ii) a I.e. the maximum depth h of the groove 13 2 Is the depth h of the groove 20 1 1/2 of (1).
In the present embodiment, as shown in fig. 9 and 10, both end portions of the notch 13 are end points in the extending direction of the notch 13; the boundary line of the cross section of the groove 13 perpendicular to the extending direction thereof comprises a first side boundary line 131, a first arc line segment 132 and a second side boundary line 133 which are connected in sequence, the cross section of the groove 13 perpendicular to the extending direction thereof has a first center line, the first center line passes through the midpoint and the center of the first arc line segment 132, and the center of the first arc line segment 132 refers to the center of the circle where the first arc line segment 132 is located; the first side boundary line 131 and the second side boundary line 133 are both straight line segments; the first side boundary line 131 has a connection end connected with the first arc line segment 132 and a free end far away from the first arc line segment 132, and the first side boundary line 131 is gradually far away from the first center line from the connection end to the free end of the first side boundary line 131; the second side boundary line 133 has a connection end connected to the first arc line segment 132 and a free end far from the first arc line segment 132, and the second side boundary line 133 is gradually far from the first center line in a direction from the connection end to the free end of the second side boundary line 133.
Specifically, the first side boundary line 131 and the second side boundary line 133 are arranged mirror-symmetrically with respect to the first center line.
In the present embodiment, when the nicking is performed along the nicking tool trend line 12, the second preset point 122 is the tool feeding point of the nicking tool 40. Wherein fig. 11 shows the shape of the nicking tool 40.
Specifically, as shown in fig. 11, the nicking tool 40 is a sheet-shaped structure, the boundary line of the plate surface of the nicking tool 40 includes a first boundary line segment 41 and a second boundary line segment 42 which are connected end to end, and the second boundary line segment 42 is a curved segment and forms a blade edge; the second boundary line segment 42 comprises a first straight line segment 421, a second arc line segment 422 and a second straight line segment 423 which are connected in sequence, namely, two ends of the first straight line segment 421 are respectively connected with the second arc line segment 422 and the first boundary line segment 41, and two ends of the second straight line segment 423 are respectively connected with the second arc line segment 422 and the first boundary line segment 41; the plate surface of the nicking tool 40 is provided with a second central line, namely the second central line is positioned on the plate surface of the nicking tool 40; the second center line passes through the midpoint and the center of the second arc segment 422, and the center of the second arc segment 422 refers to the center of the circle where the second arc segment 422 is located; the first straight line segment 421 has a first end connected to the first boundary line segment 41 and a second end connected to the second arc line segment 422, and the first straight line segment 421 gradually approaches the second center line from the first end to the second end of the first straight line segment 421; the second straight line segment 423 has a first end connected to the first boundary line segment 41 and a second end connected to the second arc line segment 422, and the second straight line segment 423 gradually approaches the second center line from the first end to the second end of the second straight line segment 423.
Preferably, the first straight line segment 421 and the second straight line segment 423 are arranged in mirror symmetry with respect to the second center line.
Optionally, the first boundary line segment 41 is a straight line segment, and the second centerline passes through a midpoint of the first boundary line segment 41.
As shown in fig. 12, the shape of the rubber block 50 carved out of the tire blank 10 by the carving knife 40 is shown.
In concrete practice, for example, when the depth of the groove 20 is 96mm and the number of grooves 20 on each tread portion 31 is 38, if the gouges 13 are not provided, the amount of deviation of the belt deformation is 10 mm; if the groove 13 having a groove depth of 48mm is provided, the amount of deviation of the belt deformation is 3 mm. For example, when the depth of the groove 20 is 110mm and the number of grooves 20 on each tread portion 31 is 40, if the groove 13 is not provided, the amount of deviation of the belt deformation is 12 mm; if the groove 13 having a groove depth of 55mm is provided, the amount of displacement of the belt deformation is 3 mm. For example, when the depth of the groove 20 is 120mm and the number of grooves 20 on each tread portion 31 is 21, if the groove 13 is not provided, the amount of deviation of the belt deformation is 13 mm; when the groove 13 having a groove depth of 60mm is provided, the amount of deviation of the belt deformation is 3 mm. It can be seen that by providing the score groove 13, the problem of belt deformation can be significantly improved.
The amount of displacement of the belt deformation is an amount of displacement that occurs when the belt deforms in the depth direction of the groove 20.
The utility model also provides a tire, it includes foretell tire child embryo. Optionally, the tire of the present application is a mining dump truck tire.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
in the tire blank 10 provided by the present invention, the tire has a predetermined plane parallel to the central axis thereof, and the projection intersection point of the central axis of the tire and the crown center line 30 on the predetermined plane is the rotational symmetry center; the tread of the tire is divided into two tread portions 31 by the crown center line 30, and pattern structures on the two tread portions 31 are arranged in central symmetry relative to the rotational symmetry center; the pattern structure on each tread portion 31 includes a plurality of grooves 20, the plurality of grooves 20 being spaced circumferentially of the tire, a first end of each groove 20 extending to the shoulder of the tire, a second end of each groove 20 extending toward the crown centerline 30 and being spaced from the crown centerline 30; the crown center line 30 divides the surface of the tire blank 10 into two surface parts 11, and the two surface parts 11 are respectively arranged corresponding to the two tread parts 31 one by one; the plurality of grooves 20 on each tread portion 31 form a plurality of groove projections 21 on the corresponding face body portion 11, a plurality of gouges 13 are provided on each face body portion 11, the plurality of gouges 13 on each face body portion 11 are provided in one-to-one correspondence with the plurality of groove projections 21, and each gouge 13 is provided at the corresponding groove projection 21; the plurality of notches 13 are provided in one-to-one correspondence with the plurality of nicking tool running lines 12, and each of the notches 13 is provided to extend along the corresponding nicking tool running line 12. The grooving 13 is arranged on the tire blank 10 in advance, so that the bending deformation of the belt ply is reduced or avoided when the groove 20 is extruded on the tire blank 10 subsequently, and the problem that the belt ply is bent and deformed when the groove is extruded on the blank of the mining self-discharging tire in the prior art is solved.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A tyre blank, said tyre having a predetermined plane parallel to its central axis, the intersection of the projections of the central axis of the tyre and of a crown centreline (30) on said predetermined plane being a centre of rotational symmetry; the crown centre line (30) divides the tread of the tyre into two tread portions (31), the pattern structures on the two tread portions (31) being arranged centrosymmetrically relative to the rotational symmetry centre; the pattern structure on each of the tread portions (31) includes a plurality of grooves (20), the plurality of grooves (20) being spaced apart along a circumferential direction of the tire, a first end of each groove (20) extending to a shoulder of the tire, and a second end of each groove (20) extending toward the crown centerline (30) and being spaced apart from the crown centerline (30); it is characterized in that the preparation method is characterized in that,
the surface of the tire blank is divided into two face parts (11), and the two face parts (11) are respectively arranged in one-to-one correspondence with the two tread parts (31); a plurality of grooves (20) on each of the tread portions (31) form a plurality of groove projections (21) on the corresponding face body portion (11), a plurality of gouges (13) are provided on each of the face body portions (11), the plurality of gouges (13) on each of the face body portions (11) are provided in one-to-one correspondence with the plurality of groove projections (21), and each of the gouges (13) is provided at the corresponding groove projection (21); the plurality of grooves (13) and the plurality of graver trend lines (12) are arranged in a one-to-one correspondence manner, and each groove (13) is arranged in an extending manner along the corresponding graver trend line (12).
2. Tyre blank according to claim 1, characterized in that the first end of each groove projection (21) is a line segment extending in the tyre circumferential direction, the midpoint of the line segment of the first end of each groove projection (21) forming a first preset point (121), each nicking strike line (12) passing through the first preset point (121) of the respective groove projection (21).
3. The tire blank according to claim 2, characterized in that the second end of each groove projection (21) is a straight segment, the midpoint of the second end of each groove projection (21) in the groove width direction of this groove projection (21) forming a second preset point (122); each of the graver strike lines (12) passes through a second preset point (122) of the respective groove projection (21).
4. The tyre blank according to claim 2, characterized in that the second end of each groove projection (21) is a segment of a circular arc, the intersection of the central axis of said segment of a circular arc with the surface of the tyre blank forming a second preset point (122); each of the nicking tool strike lines (12) passes through a second preset point (122) of the respective groove projection (21).
5. The tire blank according to any one of claims 1 to 4,
each pattern groove (20) extends along a preset straight line direction, and the preset straight line of each pattern groove (20) and the central line (30) of the tire crown form an acute angle; or
Each pattern groove (20) extends along a preset broken line direction, the preset broken line comprises a first straight line section and a second straight line section which are connected with each other, the first straight line section and the second straight line section are arranged in an obtuse angle mode, the first straight line section is located on one side, far away from the tire crown central line (30), of the second straight line section, and the second straight line section and the tire crown central line (30) are arranged in an acute angle mode; or
Each the tread groove (20) all extends along the preset arc direction, and the plurality of tread grooves (20) on each tread portion (31) are all the same along the protruding direction of the tire circumference.
6. Tyre blank according to claim 1, characterized in that, in the direction of extension of the groove (13), both ends of the groove (13) are end points; the extending direction of a straight line passing through two end points of the groove (13) is vertical to the depth direction of the groove (13); the maximum depth of the groove (13) is h 2 The depth of the groove (20) is h 1 ，h 2 ＝1/2h 1 ±10mm。
7. Tyre blank according to claim 1, wherein, in the direction of extension of the groove (13), both ends of the groove (13) are end points; the boundary line of the cross section of the groove (13) perpendicular to the extending direction of the groove comprises a first side boundary line (131), a first arc line segment (132) and a second side boundary line (133) which are sequentially connected, the cross section of the groove (13) perpendicular to the extending direction of the groove has a first central line, and the first central line passes through the midpoint and the center of the first arc line segment (132); the first side boundary line (131) and the second side boundary line (133) are both straight line segments;
the first side boundary line (131) has a connection end connected to the first arc line segment (132) and a free end distant from the first arc line segment (132), and the first side boundary line (131) is gradually distant from the first center line in a direction from the connection end to the free end of the first side boundary line (131); and/or
The second side boundary line (133) has a connection end connected to the first arc line segment (132) and a free end distant from the first arc line segment (132), and the second side boundary line (133) is gradually distant from the first center line in a direction from the connection end to the free end of the second side boundary line (133).
8. Tyre blank according to claim 7, wherein said first (131) and second (133) side boundary lines are arranged mirror-symmetrically with respect to said first centre line.
9. Tyre blank according to claim 3, characterized in that said second predetermined point (122) is the entry point of the nicking tool (40).
10. A tyre comprising a tyre blank according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221049123.0U CN217415383U (en) | 2022-04-29 | 2022-04-29 | Tire blank and tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221049123.0U CN217415383U (en) | 2022-04-29 | 2022-04-29 | Tire blank and tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217415383U true CN217415383U (en) | 2022-09-13 |
Family
ID=83184235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221049123.0U Active CN217415383U (en) | 2022-04-29 | 2022-04-29 | Tire blank and tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217415383U (en) |
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2022
- 2022-04-29 CN CN202221049123.0U patent/CN217415383U/en active Active
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